Astronomy:HD 52265 b

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Short description: Gas giant exoplanet in the constellation Monoceros
HD 52265 b / Cayahuanca
Discovery[1][2][3]
Discovered byButler et al. and Naef et al.
Discovery siteKeck Observatory and La Silla Observatory
Discovery date2000
Doppler spectroscopy
Orbital characteristics[4]
0.520±0.009 astronomical unit|AU
Eccentricity0.27±0.02
Orbital period119.27±0.02 d
242±3 º
Semi-amplitude42.97±0.70 m/s
StarHD 52265
Physical characteristics[4]
Mass≥1.21±0.05 Jupiter mass


HD 52265 b, formally named Cayahuanca, is a gas giant exoplanet located approximately 98 light-years away[5] in the constellation of Monoceros, orbiting the star HD 52265. The planet has a minimum mass slightly more than that of Jupiter. Mean distance between the planet and the star is half that of Earth from the Sun. It was discovered by both the California and Carnegie Planet Search team and the Geneva Extrasolar Planet Search team independently of each other.[1][2][3] By studying the fluctuations of the brightness of a host star, the inclination of the stars equator was determined. This allowed to calculate its true mass, assuming that the planet orbits in the plane of the star's equator.[6]

Naming

The planet HD 52265 b is named Cayahuanca. The name was selected in the NameExoWorlds campaign by El Salvador, during the 100th anniversary of the IAU. Cayahuanca means "The rock looking at the stars" in the native Nahuat language.[7][8]

References

  1. ↑ 1.0 1.1 Butler, R. Paul et al. (2000). "Planetary Companions to the Metal-rich Stars BD -10°3166 and HD 52265". The Astrophysical Journal 545 (1): 504–511. doi:10.1086/317796. Bibcode: 2000ApJ...545..504B. 
  2. ↑ 2.0 2.1 Naef, D. et al. (2001). "The CORALIE survey for southern extrasolar planets V. 3 new extrasolar planets". Astronomy and Astrophysics 375 (1): 205–218. doi:10.1051/0004-6361:20010841. Bibcode: 2001A&A...375..205N. 
  3. ↑ 3.0 3.1 "Exoplanets Galore!" (Press release). Garching, Germany: European Southern Observatory. April 15, 2000. Retrieved December 30, 2012.
  4. ↑ 4.0 4.1 Wittenmyer, Robert A. et al. (2019). "Truly eccentric – I. Revisiting eight single-eccentric planetary systems". Monthly Notices of the Royal Astronomical Society 484 (4): 5859–5867. doi:10.1093/mnras/stz290. Bibcode: 2019MNRAS.484.5859W. 
  5. ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  6. ↑ Wobbly, Sunlike Star Being Pulled by Giant Alien Planet, Charles Q. Choi
  7. ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results. 
  8. ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/. 

External links

Coordinates: Sky map 07h 00m 18.0363s, −05° 22′ 01.783″




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