Astronomy:List of exoplanet firsts

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This is a list of exoplanet discoveries that were the first by several criteria, including:

and others.

The first

The choice of "first" depends on definition and confirmation, as below. The three systems detected prior to 1994 each have a drawback, with Gamma Cephei Ab being unconfirmed until 2002; while the PSR B1257+12 planets orbit a pulsar. This leaves 51 Pegasi b (discovered and confirmed 1995) as the first confirmed exoplanet around a non-compact star.

First Planet Star Year Notes
First detected exoplanet later confirmed Gamma Cephei Ab Gamma Cephei 1988 (suspected), 2002 (confirmed) First evidence for exoplanet to receive later confirmation.
First exoplanets to be confirmed PSR B1257+12 B
PSR B1257+12 C 		PSR B1257+12 1992 First super-Earths.[1]

These exoplanets orbit a pulsar.

First confirmed exoplanet around non-compact star 51 Pegasi b 51 Pegasi 1995 First convincing exoplanet discovered around a Sun-like star.[2] While the minimum mass of HD 114762 b was high enough (11 Jupiter-masses) that it could be a brown dwarf, 51 Peg b's minimum mass meant that it almost certainly was near the mass of Jupiter.

By discovery method

First discovery by a method
Discovery method Planet Star Year Notes
First planet discovered via pulsar timing PSR B1257+12 B
PSR B1257+12 C 		PSR B1257+12 1992 First super-earths.[1]
First planet discovered via radial velocity 51 Pegasi b 51 Pegasi 1995 First convincing exoplanet discovered around a Sun-like star.[2] While the minimum mass of HD 114762 b was high enough (11 Jupiter-masses) that it could be a brown dwarf, 51 Peg b's minimum mass meant that it almost certainly was near the mass of Jupiter.
First planet discovered via transit OGLE-TR-56 b OGLE-TR-56 2002 [3] This was also the second planet detected through transiting,[3] and the then farthest planet known at time of discovery.[3] The first extrasolar planet detected to be transiting was HD 209458 b, which had already been discovered by the radial velocity method.[3][4]
First planet discovered via gravitational lensing OGLE-2003-BLG-235L b OGLE-2003-BLG-235L / MOA-2003-BLG-53L 2004 This was discovered independently by the OGLE and MOA teams.[5]
First planetary-mass companion discovered by direct imaging 2M1207 b 2M1207 2004/

2005

May be a sub-brown dwarf instead of a planet, depending on formation mechanism and definitions chosen.[6]
First directly imaged extrasolar planet discovered orbiting a star DH Tauri b DH Tauri 2005 Revised masses place it below the deuterium-burning limit.[7] May be a brown dwarf companion.[8]

DH Tauri b and GQ Lupi b were confirmed as companions within about three month in 2005. Both could be brown dwarfs. If one is a planet, it is the first planet orbiting a 'normal' star, possibly the first exoplanet directly imaged.

First planet discovered through variable star timing V391 Pegasi b V391 Pegasi 2007 The planet was discovered by examining deviations from pulsation frequency from a subdwarf star.[9]
First extrasolar planet discovered by indirect imaging (visible light) Fomalhaut b Fomalhaut 2008 Discovered by a light reflecting off of a dust cloud surrounding the planet.[10] First planet orbiting an ABO star. In 2020 this object was determined to be an expanding debris cloud from a collision of asteroids rather than a planet.[11]
First extrasolar planet discovered by astrometric observations HD 176051 b HD 176051 A or HD 176051 B 2010 Orbits around one of the stars in a binary star system although it is not known which component it is orbiting around.
First exoplanet discovered by orbital perturbations of another planet Kepler-19c Kepler-19 (KOI-84, TYC 3134-1549-1) 2011 Detected through transit-timing variation method. Its existence was inferred by the gravitational influence it had on the orbital periodicity of Kepler-19b.[12][13]
First exoplanets discovered by orbital phase reflected light variations Kepler-70b, Kepler-70c[14] Kepler-70 2011 Now dubious.[15][16]
First exoplanet discovered by transit-duration variation method Kepler-88c Kepler-88 (KOI-142) 2013 Both transit timing variation and transit-duration variation was measured to measure deviations from the regular orbit of Kepler-88b. Deviations of the planet's transit duration and timing helped to discover Kepler-88c.[17]

By detection method

Some of these planets had already been discovered by another method but were the first to be detected by the listed method.

First detection by a method
Detection method Planet Star Year Notes
First planet detected via radial velocity Gamma Cephei Ab Gamma Cephei 1988 First evidence for exoplanet to receive later confirmation.
First planet detected via pulsar timing PSR B1257+12 B
PSRB1257+12 C 		PSR B1257+12 1992 [1]
First planet detected by transit method HD 209458 b HD 209458 1999 This first exoplanet found to be transiting had already been discovered by the radial velocity method. This is also the first planet that has been detected through more than one method.[3][4]
First planetary-mass companion directly imaged (infrared) 2M1207 b 2M1207 2004/ 2005 May be a sub-brown dwarf instead of a planet, depending on formation mechanism and definitions chosen. If it is a planet, it is the first known planet around a brown dwarf.
First directly imaged extrasolar planet orbiting a star (infrared) DH Tauri b DH Tauri 2005 Revised masses place it below the deuterium-burning limit.[7] May be a brown dwarf companion.[8]

DH Tauri b and GQ Lupi b were confirmed as companions within about three month in 2005. Both could be brown dwarfs. If one is a planet, it is the first planet orbiting a 'normal' star, possibly the first exoplanet directly imaged.

First planet with observed secondary eclipse (infrared) HD 209458 b HD 209458 2005 Planet was discovered in 1999. This is the first detection of light from an object with a clear planetary origin.[18]
First directly imaged extrasolar planet orbiting a sun-like star (infrared) AB Pictoris b AB Pictoris 2005 [19] It has 10±1 MJ.[20]

GQ Lupi b was found earlier.[21] May, however, be a brown dwarf companion.

1RXS J160929.1−210524 b was found later.[22] Revised mass places it at or above the deuterium-burning limit. May be a sub-brown dwarf instead of a planet, depending on formation mechanism and definitions chosen. The orbital status of the companion was confirmed in 2010.[23]

First planet characterized by atmospheric spectroscopy HD 209458 b HD 209458 2007 [24] also by[25] HD 189733 b was characterized spectroscopically only few month later.[26]

Any of the earlier Direct imaging exoplanets, e.g. 2M1207 b, DH Tauri b or GQ Lupi b have spatially resolved spectroscopic observations, but the objects need confirmation to be of planetary origin.

First extrasolar planet detected by indirect imaging (visible light) Fomalhaut b Fomalhaut 2008 Discovered by a light reflecting off of a dust cloud surrounding the planet.[10] First planet orbiting an ABO star. In 2020 this object was determined to be an expanding debris cloud from a collision of asteroids rather than a planet.[11]
First planets directly characterized through astrometric observations Gliese 876 b and Gliese 876 c Gliese 876 2009
First planet detected by orbital phase reflected light variations in visible light CoRoT-1b[27] CoRoT-1 2009 The planet in question had already been discovered with transit method.
First planet characterized by spatially resolved atmospheric spectroscopy HR 8799 c HR 8799 2010 [28][29] Several spectra of Direct imaging exoplanets might be earlier, but the objects need confirmation to be of planetary origin. Especially AB Pictoris b is a candidate, if its mass is confirmed to be 10±1 MJ.[20]
First planets detected through ellipsoidal light variations of the host star HAT-P-7b HAT-P-7 2010 [30]
First planets detected through transit timing variation method Kepler-9b, Kepler-9c Kepler-9 2010 Transit-timing variation was used to confirm both planets detected through transit method.[31]
First planet detected through transit duration variation method Kepler-16b[32] Kepler-16 2011 Orbital motion of the three-body system Kepler-16 causes variations of the duration of stellar eclipses and planetary transits.
First planet detected with eclipsing binary timing with well-characterized orbit Kepler-16b Kepler-16 2011 Kepler-16b itself was detected through transit method. There are stars with earlier detections through eclipsing binary timing. However, either those signals have matched with unstable orbits or the exact orbits are not known.[33]
First planet detected by light variations due to relativistic beaming TrES-2b TrES-2A 2012 [34]
First tilted multi-planetary system discovered Kepler-56b, c and d Kepler-56 2013 [35]
First extrasolar planet detected through polarimetry DH Tauri b /

GSC 6214-210 b

DH Tauri /

GSC 6214–210

2021

Polarized scattered light was found for HD 189733 b in 2008.[36] It could not be confirmed and was disputed by two separate teams.[37][38][39] Possibly a "Saharan dust event over the La Palma observatory in 2008 August".[39] HD 189733 b was discovered in 2005.

By system type

First discovery by system type
System type Planet Star Year Notes
First extrasolar planet discovered in a solitary star system PSR B1257+12 B
PSR B1257+12 C 		PSR B1257+12 1992 First extrasolar planets discovered.[40]
First multiple planet extrasolar system discovered PSR B1257+12 A
PSR B1257+12 B
PSR B1257+12 C 		PSR B1257+12 1992 First pulsar planetary system.
First planet discovered in a circumbinary orbit PSR B1620-26 b PSR B1620-26 1993 Orbits a pulsar and a white dwarf. Discovery confirmed in 2003.
First planet discovered in globular cluster PSR B1620-26 b PSR B1620-26 1993 Located in Messier 4.
First planet discovered in a multiple main-sequence star system 55 Cancri Ab 55 Cancri A 1996 55 Cnc has a distant red dwarf companion.
  • The planet around Gamma Cephei was already suspected in 1988, although its existence was not confirmed until 2002
  • Gamma Cephei Ab is the first relatively close binary with a planet.
First "free-floating" planet discovered[NB 1] S Ori 68 N/A 2000 ~5 MJupiter[41] Isolated status needs confirmation. Could be a companion of SE 70; needs confirmation.[42]

S Ori J053810.1-023626 (S Ori 70) has a mass of 3 MJupiter; needs confirmation.[43][44]

First binary star system where both components have separate planetary systems HD 20781 b
HD 20781 c
HD 20782 b 		HD 20781
HD 20782 		2011
First multiple planet system in a multi-star system where multiple planets orbit multiple stars Kepler-47b
Kepler-47c 		Kepler-47 2012 [45][46] NN Serpentis cataclysmic variable is suspected to have at least 2 planets as of 2009.[47]

By star type

First discovery by star type
Star type Planet Star Year Notes
First pulsar planet discovered PSR B1257+12 B
PSR B1257+12 C 		PSR B1257+12 1992 [40][1]
First known planet orbiting a white dwarf PSR B1620-26 b PSR B1620-26 1993 Orbits a pulsar and a white dwarf. Discovery confirmed in 2003. GD 66 b was announced in 2007, but has not been confirmed.
First known extrasolar planet orbiting a main sequence star (Sun-like) 51 Pegasi b 51 Pegasi 1995 First hot Jupiter.[40]
First known planet orbiting a red dwarf Gliese 876 b Gliese 876 1998 [48][49]
First "free-floating" planet discovered[NB 1] S Ori 68 N/A 2000 ~5 MJupiter[41] Isolated status needs confirmation. Could be a companion of SE 70; needs confimation.[42]

S Ori J053810.1-023626 (S Ori 70) has a mass of 3 MJupiter; needs confirmation.[43][44]

First known planet orbiting a true giant star Iota Draconis b Iota Draconis 2002 Planet Epsilon Reticuli Ab was discovered earlier in 2000, however its host star is a star of sub giant-giant type.[50]
First known planet orbiting a brown dwarf 2M1207 b 2M1207 2004 May in fact be a sub-brown dwarf instead of a planet, depending on formation mechanism and definitions chosen. First directly imaged exoplanet.[51]
First known planet orbiting a pre-main-sequence star DH Tauri b DH Tauri 2005 Revised masses place it below the deuterium-burning limit.[7] May be a brown dwarf companion.[8]
First known planet orbiting an A star (white star) Fomalhaut b Fomalhaut 2008 First extrasolar planet discovered by visible light image. In 2020 this object was determined to be an expanding debris cloud from a collision of asteroids rather than a planet.[11]
First confirmed planet orbiting only a white dwarf WD 0806−661 B WD 0806−661 2011 Maybe a sub-brown dwarf instead of planet, depending on the formation mechanism.[52]
First known planet orbiting a B star (blue-white star) b Centauri b b Centauri 2021 [53]
First known planet orbiting a hypervelocity star MOA-2011-BLG-262Lb MOA-2011-BLG-262L 2024 [54]

By planet type

Firsts by planet type
Planet type Planet Star Year Notes
First super-Earth discovered[NB 2] PSR B1257+12 B
PSR B1257+12 C 		PSR B1257+12 1992 First exoplanets discovered.[40]
First hot Jupiter 51 Pegasi b 51 Pegasi 1995 First planet discovered orbiting a main sequence star other than the Sun.
First evaporating planet discovered HD 209458 b HD 209458 1999 First transiting exoplanet.[40]
First free-floating planet discovered[NB 1] OTS 44 N/A 1998
First super-Earth orbiting a main- sequence star[NB 2] Gliese 876 d Gliese 876 2005 Orbits a red dwarf star.
First icy extrasolar planet orbiting a main-sequence star OGLE-2005-BLG-390Lb OGLE-2005-BLG-390L 2006 Orbits a red dwarf star. The icy nature of this planet is not confirmed, as no radius measurements are available so the density is unknown. The first extrasolar planet known to have a density compatible with being an icy planet is GJ 1214 b, though even for this case there are other possibilities for the composition.[citation needed]
First ocean planet candidate; also first small planet within the circumstellar habitable zone Gliese 581d Gliese 581 2007
First extrasolar terrestrial planet orbiting a main-sequence star CoRoT-7b (planetary nature confirmed in 2009; terrestrial composition confirmed in 2022) /
Kepler-10b (planetary nature and terrestrial composition confirmed in 2011) 		CoRoT-7 / Kepler-10 2009 / 2011
First Jupiter analogue HIP 11915 b HIP 11915 2015 The discovery raises the possibility that HIP 11915 will be the first Solar System analogue discovered.
First protoplanet PDS 70 b PDS 70 2018

Other

Other firsts
Record Planet Star Year Notes
First map of an extrasolar planet released HD 189733 b HD 189733 2007 The map in question is a thermal emission map.[55]
First extrasolar planet with a deformation detected WASP-103b WASP-103 2022 The radial Love number was estimated for the planet from the transit light curve.[56]
First multi-planet extrasolar system directly imaged HR 8799 b
HR 8799 c
HR 8799 d
HR 8799 e 		HR 8799 2008
First planet discovered with a retrograde orbit WASP-17b WASP-17 2009 The planet HAT-P-7b was discovered before WASP-17b, but its retrograde nature was announced after that of WASP-17b. The planet Nu Octantis Ab, whose orbit is retrograde in a close binary star, was suspected to exist since 2004 although it was not confirmed until 2025.[57]
First planet discovered orbiting a Sun-like star in a star cluster Pr0201b
Pr0211b 		Pr0201
Pr0211 		2012 Beehive Cluster star cluster.[58]
First recorded planet-planet transit Kepler-89d
Kepler-89e 		Kepler-89 2012 Kepler-89e was found to partially transit Kepler-89d.[59]
First extrasolar planet with serious potential to support life Kepler-62f Kepler-62 2013
First transiting planet discovered in a star cluster Kepler-66b
Kepler-67b 		Kepler-66
Kepler-67 		2013 NGC 6811 star cluster; these two planets were, at the time of discovery, only two of six total planets known in star clusters.[60]
First map of cloud coverage of an extrasolar planet Kepler-7b Kepler-7 2013 Observations indicate cloud coverage in the west and clear skies in the east.[61]
First not tidally locked extrasolar planet to have its day length measured Beta Pictoris b Beta Pictoris 2014 Rotation time was calculated to be 8.1 hours.[62]
First planet found to contain water in the stratosphere WASP-121b WASP-121 2017 [63][64]
First extrasolar planet system with one radial velocity and one directly imaged planet Beta Pictoris b Beta Pictoris c Beta Pictoris 2019 [65]
First Earth-mass rogue planet unbounded by any star, and free floating in the Milky Way galaxy. OGLE-2016-BLG-1928 N/A 2020 Detected by microlensing techniques.[66][67]

See also

Notes

  1. ↑ 1.0 1.1 1.2 Free-floating objects are not usually considered planets
  2. ↑ 2.0 2.1 The mass range of Super-Earths is disputed

References

  1. ↑ 1.0 1.1 1.2 1.3 Space.com, "Earth-Sized Planets Confirmed, But They're Dead Worlds", Robert Roy Britt, 29 May 2003 (accessed 20-10-2010)
  2. ↑ 2.0 2.1 Queloz, Didier (2006). "Extrasolar planets: Light through a gravitational lens". Nature 439 (7075): 400–401. doi:10.1038/439400a. PMID 16437096. Bibcode: 2006Natur.439..400Q. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 SpaceDaily.com, "Farthest Known Planet Opens the Door For Finding New Earths", 10 January 2003 (accessed 2010-10-24)
  4. ↑ 4.0 4.1 PhysOrg.com, "New Era in Planetary Science", 23 March 2005 (accessed 2010-10-24)
  5. ↑ Sky and Telescope, "First Planet Found by Microlensing", Alan M. MacRobert, 16 April 2004 (accessed 2010-10-24)
  6. ↑ ESO press releases [1] [2]
  7. ↑ 7.0 7.1 7.2 Mass was revised to about 11.5 Jupiter masses in 2006. [3] [4] [5]
  8. ↑ 8.0 8.1 8.2 Itoh, Yoichi; Hayashi, Masahiko; Tamura, Motohide; Tsuji, Takashi; Oasa, Yumiko; Fukagawa, Misato; Hayashi, Saeko S.; Naoi, Takahiro et al. (2005-02-20). "A Young Brown Dwarf Companion to DH Tauri" (in en). The Astrophysical Journal 620 (2): 984–993. doi:10.1086/427086. ISSN 0004-637X. Bibcode: 2005ApJ...620..984I. https://iopscience.iop.org/article/10.1086/427086. 
  9. ↑ Silvotti, R.; Schuh, S.; Janulis, R.; Solheim, J.-E.; Bernabei, S.; Østensen, R.; Oswalt, T. D.; Bruni, I. et al. (2007). "A giant planet orbiting the 'extreme horizontal branch' star V 391 Pegasi". Nature 449 (7159): 189–191. doi:10.1038/nature06143. PMID 17851517. Bibcode: 2007Natur.449..189S. https://authors.library.caltech.edu/17168/2/Silvotti2007p5743Nature_supp.pdf. 
  10. ↑ 10.0 10.1 Kalas, Paul (2008-11-13). "Optical Images of an Exosolar Planet 25 Light-Years from Earth". Science 322 (5906): 1345–8. doi:10.1126/science.1166609. PMID 19008414. Bibcode: 2008Sci...322.1345K. 
  11. ↑ 11.0 11.1 11.2 Gáspár, András; Rieke, George H. (April 20, 2020). "New HST data and modeling reveal a massive planetesimal collision around Fomalhaut". PNAS 117 (18): 9712–9722. doi:10.1073/pnas.1912506117. PMID 32312810. Bibcode: 2020PNAS..117.9712G. 
  12. ↑ TG Daily, "'Invisible' planet detected", Kate Taylor, 9 September 2011
  13. ↑ Time, "Found: A (So Far) Invisible World", Michael D. Lemonick, 9 September 2011
  14. ↑ Charpinet, S. and Fontaine, G. and Brassard, P. and Green, EM and Van Grootel, V. and Randall, SK and Silvotti, R. and Baran, AS and Østensen, RH and Kawaler, SD (2011). "A compact system of small planets around a former red-giant star". Nature (Nature Publishing Group) 480 (7378): 496–499. doi:10.1038/nature10631. PMID 22193103. Bibcode: 2011Natur.480..496C. 
  15. ↑ Krzesinski, J. (August 25, 2015), "Planetary candidates around the pulsating sdB star KIC 5807616 considered doubtful", Astronomy & Astrophysics 581: A7, doi:10.1051/0004-6361/201526346, Bibcode: 2015A&A...581A...7K 
  16. ↑ Blokesz, A.; Krzesinski, J.; Kedziora-Chudczer, L. (4 July 2019), "Analysis of putative exoplanetary signatures found in light curves of two sdBV stars observed by Kepler", Astronomy & Astrophysics 627: A86, doi:10.1051/0004-6361/201835003, Bibcode: 2019A&A...627A..86B 
  17. ↑ Nesvorný, David; Kipping, David; Terrell, Dirk; Hartman, Joel; Bakos, Gáspár Á.; Buchhave, Lars A.; Stapelfeldt, Karl; Marois, Christian et al. (2013). "Koi-142, the King of Transit Variations, is a Pair of Planets Near the 2:1 Resonance". The Astrophysical Journal 777 (1): 3. doi:10.1088/0004-637X/777/1/3. Bibcode: 2013ApJ...777....3N. 
  18. ↑ Deming, Drake; Seager, Sara; Richardson, L. Jeremy; Harrington, Joseph (2005-03-23). "Infrared radiation from an extrasolar planet" (in en). Nature 434 (7034): 740–743. doi:10.1038/nature03507. ISSN 0028-0836. PMID 15785769. Bibcode: 2005Natur.434..740D. https://www.nature.com/articles/nature03507. 
  19. ↑ Chauvin, G.; Lagrange, A.-M.; Zuckerman, B.; Dumas, C.; Mouillet, D.; Song, I.; Beuzit, J.-L.; Lowrance, P. et al. (2005-08-01). "A companion to AB Pic at the planet/brown dwarf boundary". Astronomy & Astrophysics 438 (3): L29–L32. doi:10.1051/0004-6361:200500111. ISSN 0004-6361. Bibcode: 2005A&A...438L..29C. http://www.aanda.org/10.1051/0004-6361:200500111. 
  20. ↑ 20.0 20.1 Palma-Bifani, P.; Chauvin, G.; Bonnefoy, M.; Rojo, P. M.; Petrus, S.; Rodet, L.; Langlois, M.; Allard, F. et al. (2023-02-01). "Peering into the young planetary system AB Pic: Atmosphere, orbit, obliquity, and second planetary candidate". Astronomy & Astrophysics 670: A90. doi:10.1051/0004-6361/202244294. ISSN 0004-6361. Bibcode: 2023A&A...670A..90P. https://www.aanda.org/10.1051/0004-6361/202244294. 
  21. ↑ Neuhäuser, R.; Guenther, E. W.; Wuchterl, G.; Mugrauer, M.; Bedalov, A.; Hauschildt, P. H. (2005-05-01). "Evidence for a co-moving sub-stellar companion of GQ Lup". Astronomy & Astrophysics 435 (1): L13–L16. doi:10.1051/0004-6361:200500104. ISSN 0004-6361. Bibcode: 2005A&A...435L..13N. http://www.aanda.org/10.1051/0004-6361:200500104. 
  22. ↑ Exoplanet 'circles normal star', BBC News Online, September 15, 2008
  23. ↑ Lafrenière, David; Jayawardhana, Ray; van Kerkwijk, Marten H. (2010-08-10). "THE DIRECTLY IMAGED PLANET AROUND THE YOUNG SOLAR ANALOG 1RXS J160929.1 – 210524: CONFIRMATION OF COMMON PROPER MOTION, TEMPERATURE, AND MASS". The Astrophysical Journal 719 (1): 497–504. doi:10.1088/0004-637X/719/1/497. ISSN 0004-637X. Bibcode: 2010ApJ...719..497L. https://iopscience.iop.org/article/10.1088/0004-637X/719/1/497. 
  24. ↑ Richardson, L. Jeremy; Deming, Drake; Horning, Karen; Seager, Sara; Harrington, Joseph (2007-02-01). "A spectrum of an extrasolar planet" (in en). Nature 445 (7130): 892–895. doi:10.1038/nature05636. ISSN 0028-0836. PMID 17314975. Bibcode: 2007Natur.445..892R. https://www.nature.com/articles/nature05636. 
  25. ↑ Swain, M. R.; Bouwman, J.; Akeson, R. L.; Lawler, S.; Beichman, C. A. (2008-02-10). "The Mid-Infrared Spectrum of the Transiting Exoplanet HD 209458b" (in en). The Astrophysical Journal 674 (1): 482–497. doi:10.1086/523832. ISSN 0004-637X. Bibcode: 2008ApJ...674..482S. https://iopscience.iop.org/article/10.1086/523832. 
  26. ↑ Grillmair, C. J.; Charbonneau, D.; Burrows, A.; Armus, L.; Stauffer, J.; Meadows, V.; Van Cleve, J.; Levine, D. (2007-04-01). "A Spitzer Spectrum of the Exoplanet HD 189733b" (in en). The Astrophysical Journal 658 (2): L115–L118. doi:10.1086/513741. ISSN 0004-637X. Bibcode: 2007ApJ...658L.115G. https://iopscience.iop.org/article/10.1086/513741. 
  27. ↑ Ignas A. G. Snellen; Ernst J. W. de Mooij; Simon Albrecht (2009-05-28). "The changing phases of extrasolar planet CoRoT-1b". Nature 459 (7246): 543–545. doi:10.1038/nature08045. PMID 19478779. Bibcode: 2009Natur.459..543S. 
  28. ↑ "VLT Captures First Direct Spectrum of an Exoplanet". 13 January 2010. https://www.eso.org/public/news/eso1002/. 
  29. ↑ Janson, M.; Bergfors, C.; Goto, M.; Brandner, W.; Lafrenière, D. (2010-02-10). "SPATIALLY RESOLVED SPECTROSCOPY OF THE EXOPLANET HR 8799 c". The Astrophysical Journal 710 (1): L35–L38. doi:10.1088/2041-8205/710/1/L35. ISSN 2041-8205. Bibcode: 2010ApJ...710L..35J. https://iopscience.iop.org/article/10.1088/2041-8205/710/1/L35. 
  30. ↑ Welsh, William F.; Orosz, Jerome A.; Seager, Sara; Fortney, Jonathan J.; Jenkins, Jon; Rowe, Jason F.; Koch, David; Borucki, William J. (2010-04-20). "THE DISCOVERY OF ELLIPSOIDAL VARIATIONS IN THE KEPLER LIGHT CURVE OF HAT-P-7". The Astrophysical Journal 713 (2): L145–L149. doi:10.1088/2041-8205/713/2/L145. ISSN 2041-8205. Bibcode: 2010ApJ...713L.145W. https://iopscience.iop.org/article/10.1088/2041-8205/713/2/L145. 
  31. ↑ "NASA's Kepler Mission Discovers Two Planets Transiting the Same Star". 20 November 2015. http://www.nasa.gov/centers/ames/news/releases/2010/10-73AR.html. 
  32. ↑ Doyle, Laurance R.; Carter, Joshua A.; Fabrycky, Daniel C.; Slawson, Robert W.; Howell, Steve B.; Winn, Joshua N.; Orosz, Jerome A.; Prˇsa, Andrej et al. (2011-09-16). "Kepler-16: A Transiting Circumbinary Planet" (in en). Science 333 (6049): 1602–1606. doi:10.1126/science.1210923. ISSN 0036-8075. PMID 21921192. Bibcode: 2011Sci...333.1602D. https://www.science.org/doi/10.1126/science.1210923. 
  33. ↑ Overbye, Dennis (2011-09-15). "NASA Detects Planet Dancing With a Pair of Stars". The New York Times. https://www.nytimes.com/2011/09/16/science/space/16planet.html. 
  34. ↑ Barclay, Thomas; Huber, Daniel; Rowe, Jason F.; Fortney, Jonathan J.; Morley, Caroline V.; Quintana, Elisa V.; Fabrycky, Daniel C.; Barentsen, Geert et al. (2012). "Photometrically derived masses and radii of the planet and star in the TrES-2 system". The Astrophysical Journal 761 (1): 53. doi:10.1088/0004-637X/761/1/53. Bibcode: 2012ApJ...761...53B. 
  35. ↑ Huber, Daniel; Carter, Joshua A.; Barbieri, Mauro; Miglio, Andrea; Deck, Katherine M.; Fabrycky, Daniel C.; Montet, Benjamin T.; Buchhave, Lars A. et al. (2013-10-18). "Stellar Spin-Orbit Misalignment in a Multiplanet System" (in en). Science 342 (6156): 331–334. doi:10.1126/science.1242066. ISSN 0036-8075. PMID 24136961. Bibcode: 2013Sci...342..331H. https://www.science.org/doi/10.1126/science.1242066. 
  36. ↑ Berdyugina, S. V.; Berdyugin, A. V.; Fluri, D. M.; Piirola, V. (2008-01-20). "First Detection of Polarized Scattered Light from an Exoplanetary Atmosphere" (in en). The Astrophysical Journal 673 (1): L83–L86. doi:10.1086/527320. ISSN 0004-637X. Bibcode: 2008ApJ...673L..83B. https://iopscience.iop.org/article/10.1086/527320. 
  37. ↑ Wiktorowicz, Sloane J. (2009-05-10). "NONDETECTION OF POLARIZED, SCATTERED LIGHT FROM THE HD 189733b HOT JUPITER". The Astrophysical Journal 696 (2): 1116–1124. doi:10.1088/0004-637X/696/2/1116. ISSN 0004-637X. Bibcode: 2009ApJ...696.1116W. https://iopscience.iop.org/article/10.1088/0004-637X/696/2/1116. 
  38. ↑ Wiktorowicz, Sloane J.; Nofi, Larissa A.; Jontof-Hutter, Daniel; Kopparla, Pushkar; Laughlin, Gregory P.; Hermis, Ninos; Yung, Yuk L.; Swain, Mark R. (2015-10-27). "A GROUND-BASED ALBEDO UPPER LIMIT FOR HD 189733b FROM POLARIMETRY". The Astrophysical Journal 813 (1): 48. doi:10.1088/0004-637X/813/1/48. ISSN 1538-4357. Bibcode: 2015ApJ...813...48W. https://iopscience.iop.org/article/10.1088/0004-637X/813/1/48. 
  39. ↑ 39.0 39.1 Bott, Kimberly; Bailey, Jeremy; Kedziora-Chudczer, Lucyna; Cotton, Daniel V.; Lucas, P. W.; Marshall, Jonathan P.; Hough, J. H. (2016-05-23). "The polarization of HD 189733" (in en). Monthly Notices of the Royal Astronomical Society: Letters 459 (1): L109–L113. doi:10.1093/mnrasl/slw046. ISSN 1745-3925. Bibcode: 2016MNRAS.459L.109B. https://academic.oup.com/mnrasl/article/459/1/L109/2589655. 
  40. ↑ 40.0 40.1 40.2 40.3 40.4 Space.com, "Out There: A Strange Zoo of Other Worlds", Charles Q. Choi, 14 February 2010 (accessed 2010-10-20)
  41. ↑ 41.0 41.1 Zapatero Osorio, M. R.; Béjar, V. J. S.; Martı́n, E. L.; Rebolo, R.; Navascués, D. Barrado y; Bailer-Jones, C. A. L.; Mundt, R. (2000-10-06). "Discovery of Young, Isolated Planetary Mass Objects in the σ Orionis Star Cluster" (in en). Science 290 (5489): 103–107. doi:10.1126/science.290.5489.103. ISSN 0036-8075. PMID 11021788. Bibcode: 2000Sci...290..103Z. https://www.science.org/doi/10.1126/science.290.5489.103. 
  42. ↑ 42.0 42.1 Caballero, J. A.; Martín, E. L.; Dobbie, P. D.; Barrado y Navascués, D. (2006-12-01). "Are isolated planetary-mass objects really isolated?: A brown dwarf-exoplanet system candidate in the σ Orionis cluster". Astronomy & Astrophysics 460 (2): 635–640. doi:10.1051/0004-6361:20066162. ISSN 0004-6361. Bibcode: 2006A&A...460..635C. http://www.aanda.org/10.1051/0004-6361:20066162. 
  43. ↑ 43.0 43.1 Space.com, "Mysterious Object Might be First Extrasolar Planet Photographed" , Robert Roy Britt, 22 May 2002 (accessed 2010-10-24)
  44. ↑ 44.0 44.1 Zapatero Osorio, M. R.; Bejar, V. J. S.; Martin, E. L.; Rebolo, R.; Navascues, D. Barrado y; Mundt, R.; Eisloffel, J.; Caballero, J. A. (2002-10-10). "A Methane, Isolated, Planetary-Mass Object in Orion" (in en). The Astrophysical Journal 578 (1): 536–542. doi:10.1086/342474. ISSN 0004-637X. Bibcode: 2002ApJ...578..536Z. https://iopscience.iop.org/article/10.1086/342474. 
  45. ↑ Space.com, "Newfound 'Tatooine' Alien Planet Bodes Well for E.T. Search", Charles Q. Choi, 4 September 2012 (accessed 5 September 2012)
  46. ↑ SpaceDaily, "Astronomers Find First Multi-Planet System Around a Binary Star", 3 September 2012 (accessed 5 September 2012)
  47. ↑ Beuermann, K.; Hessman, F. V.; Dreizler, S.; Marsh, T. R.; Parsons, S. G.; Winget, D. E.; Miller, G. F.; Schreiber, M. R. et al. (2010). "Two planets orbiting the recently formed post-common envelope binary NN Serpentis". Astronomy and Astrophysics 521: L60. doi:10.1051/0004-6361/201015472. Bibcode: 2010A&A...521L..60B. http://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/abs/2010/13/aa15472-10/aa15472-10.html. 
  48. ↑ Marietta DiChristina (September 1998). "Other Worlds". Popular Science: 77–79. 
  49. ↑ Delfosse, Xavier; Forveille, Thierry; Mayor, Michel; Perrier, Christian; Naef, Dominique; Queloz, Didier (1998). "The closest extrasolar planet. A giant planet around the M4 dwarf GL 876". Astronomy and Astrophysics 338: L67–L70. Bibcode: 1998A&A...338L..67D. 
  50. ↑ Farihi, J.; Burleigh, M. R.; Holberg, J. B.; Casewell, S. L.; Barstow, M. A. (November 2011), "Evolutionary constraints on the planet-hosting subgiant ε Reticulum from its white dwarf companion", Monthly Notices of the Royal Astronomical Society 417 (3): 1735–1741, doi:10.1111/j.1365-2966.2011.19354.x, Bibcode: 2011MNRAS.417.1735F. 
  51. ↑ "2M1207 b – First image of an exoplanet". https://science.nasa.gov/resource/2m1207-b-first-image-of-an-exoplanet/. 
  52. ↑ Rodriguez, David R.; Zuckerman, B.; Melis, Carl; Song, Inseok (May 2011). "The Ultra Cool Brown Dwarf Companion of WD 0806-661B: Age, Mass, and Formation Mechanism". The Astrophysical Journal Letters 732 (2): L29. doi:10.1088/2041-8205/732/2/L29. Bibcode: 2011ApJ...732L..29R. 
  53. ↑ Janson, Markus; Squicciarini, Vito; Delorme, Philippe; Gratton, Raffaele; Bonnefoy, Mickaël; Reffert, Sabine; Mamajek, Eric E.; Eriksson, Simon C. et al. (February 2021). "BEAST begins: sample characteristics and survey performance of the B-star Exoplanet Abundance Study". Astronomy & Astrophysics 646: A164. doi:10.1051/0004-6361/202039683. ISSN 0004-6361. Bibcode: 2021A&A...646A.164J. https://www.aanda.org/10.1051/0004-6361/202039683. 
  54. ↑ Terry, Sean K.; Beaulieu, Jean-Philippe; Bennett, David P.; Bhattacharya, Aparna; Hulberg, Jon; Huston, Macy J.; Koshimoto, Naoki; Blackman, Joshua W. et al. (2025). "A Candidate High-velocity Exoplanet System in the Galactic Bulge". The Astronomical Journal 169 (3): 131. doi:10.3847/1538-3881/ad9b0f. Bibcode: 2025AJ....169..131T. 
  55. ↑ Knutson, Heather A.; David Charbonneau; Lori E. Allen; Jonathan J. Fortney; Eric Agol; Nicolas B. Cowan; Adam P. Showman; Curtis S. Cooper et al. (10 May 2007). "A map of the day–night contrast of the extrasolar planet HD 189733b". Nature 447 (7141): 183–186. doi:10.1038/nature05782. PMID 17495920. Bibcode: 2007Natur.447..183K. 
  56. ↑ Barros, S. C. C.; Akinsanmi, B.; Boué, G.; Smith, A. M. S.; Laskar, J.; Ulmer-Moll, S.; Lillo-Box, J.; Queloz, D. et al. (January 2022). "Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS". Astronomy & Astrophysics 657: A52. doi:10.1051/0004-6361/202142196. ISSN 0004-6361. Bibcode: 2022A&A...657A..52B. https://www.aanda.org/10.1051/0004-6361/202142196. 
  57. ↑ Cheng, Ho Wan; Trifonov, Trifon; Lee, Man Hoi; Cantalloube, Faustine; Reffert, Sabine; Ramm, David; Quirrenbach, Andreas (May 2025). "A retrograde planet in a tight binary star system with a white dwarf". Nature 641 (8064): 866–870. doi:10.1038/s41586-025-09006-x. ISSN 1476-4687. https://www.nature.com/articles/s41586-025-09006-x. 
  58. ↑ ScienceDaily, "First Planets Found Around Sun-Like Stars in a Cluster", 14 September 2012
  59. ↑ Masuda, Kento; Hirano, Teruyuki; Taruya, Atsushi; Nagasawa, Makiko; Suto, Yasushi; Kite, Edwin S.; Stapelfeldt, Karl; Marois, Christian et al. (2013). "Characterization of the Koi-94 System with Transit Timing Variation Analysis: Implication for the Planet-Planet Eclipse". The Astrophysical Journal 778 (2): 185–200. doi:10.1088/0004-637X/778/2/185. Bibcode: 2013ApJ...778..185M. 
  60. ↑ SpaceDaily, First Transiting Planets in a Star Cluster Discovered, 27 June 2013
  61. ↑ NASA Space Telescopes Find Patchy Clouds on Exotic World nasa.gov
  62. ↑ Cowen, R. (2014-04-30). "First exoplanet seen spinning". Nature. doi:10.1038/nature.2014.15132. 
  63. ↑ Landau, Elizabeth; Villard, Ray (2 August 2017). "Hubble Detects Exoplanet with Glowing Water Atmosphere". NASA. https://www.jpl.nasa.gov/news/news.php?feature=6909. 
  64. ↑ Evans, Thomas M. (2 August 2017). "An ultrahot gas-giant exoplanet with a stratosphere". Nature 548 (7665): 58–61. doi:10.1038/nature23266. PMID 28770846. Bibcode: 2017Natur.548...58E. 
  65. ↑ Lagrange, A.-M.; Meunier, Nadège; Rubini, Pascal; Keppler, Miriam; Galland, Franck; Chapellier, Eric; Michel, Eric; Balona, Luis et al. (2019-08-19). "Evidence for an additional planet in the β Pictoris system" (in en). Nature Astronomy 3 (12): 1135–1142. doi:10.1038/s41550-019-0857-1. ISSN 2397-3366. Bibcode: 2019NatAs...3.1135L. https://www.nature.com/articles/s41550-019-0857-1. 
  66. ↑ Gough, Evan (1 October 2020). "A Rogue Earth-Mass Planet Has Been Discovered Freely Floating in the Milky Way Without a Star". Universe Today. https://www.universetoday.com/148097/a-rogue-earth-mass-planet-has-been-discovered-freely-floating-in-the-milky-way-without-a-star/. 
  67. ↑ Mroz, Przemek (29 September 2020). "A Terrestrial-mass Rogue Planet Candidate Detected in the Shortest-timescale Microlensing Event". The Astrophysical Journal Letters 903 (1): L11. doi:10.3847/2041-8213/abbfad. Bibcode: 2020ApJ...903L..11M. 



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