Astronomy:HD 175289

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Short description: Binary star system in the constellation of Lyra
HD 175289
Observation data
Equinox J2000.0]] (ICRS)
Constellation Lyra
Right ascension  18h 52m 36.1606s[1]
Declination +45° 08′ 23.343″[1]
Apparent magnitude (V) 9.50[1]
Characteristics
Kepler-410A
Evolutionary stage Subgiant
Spectral type F6IV[2]
Kepler-410B
Spectral type K2[3]
Astrometry
A
Radial velocity (Rv)−40.6±0.7[4] km/s
Proper motion (μ) RA: 61.683[4] mas/yr
Dec.: 61.673[4] mas/yr
Parallax (π)6.7933 ± 0.0109[4] mas
Distance480.1 ± 0.8 ly
(147.2 ± 0.2 pc)
B
Proper motion (μ) RA: 61.679[4] mas/yr
Dec.: 60.937[5] mas/yr
Parallax (π)6.8007 ± 0.0260[5] mas
Distance480 ± 2 ly
(147.0 ± 0.6 pc)
Position (relative to Kepler-410A)[6]
ComponentKepler-410B
Angular distance1.6672±0.0015″
Position angle35.975±0.052°
Observed separation
(projected)		245 AU
Details
Kepler-410A
Mass1.223±0.054[7] M☉
Radius1.357±0.022[7] R☉
Luminosity2.66±0.16[7] L☉
Surface gravity (log g)4.28±0.02[8] cgs
Temperature6325±75[8] K
Metallicity [Fe/H]0.01±0.10[8] dex
Rotation20.3+2.2−1.3 d[9]
Age1.81±0.27[7] Gyr
Kepler-410B
Mass0.728[3] M☉
Radius0.89+0.09−0.03[3] R☉
Other designations
BD+44 3008, Kepler-410, KOI-42, KIC 8866102, TYC 3540-760-1, GSC 03540-00760, 2MASS J18523616+4508233[1]
Kepler-410A: Gaia EDR3 2106904148451706752
Kepler-410B: Gaia EDR3 2106904148449360000
Database references
SIMBADdata
B

HD 175289 is a binary star system. Its primary star, also known as Kepler-410A, is a F-type subgiant star, orbited by the orange dwarf star Kepler-410B on a wide orbit. The companion star was discovered in 2012.[6]

The primary star's surface temperature is 6325±75 K.[8] HD 175289 is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.01±0.10,[8] but is much younger at an age of 1.81±0.27 billion years.[7]

Planetary system

In 2013, one planet, named Kepler-410 Ab (fr), was discovered using the transit method.[10] It is not known if the planet is orbiting the primary or secondary star.[10] If orbiting the secondary, the planetary radius must be doubled.[11] Immediately, a second non-transiting planet was suspected due to transit-timing variations, and a 2019 study also found evidence for such a planet, though it has not yet been confirmed or given any designation.[12]

The Kepler-410A planetary system[8][12]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
Kepler-410 Ab (fr) — 0.14±0.01 17.833682±0.000012 0.17 90° 2.48±0.07 R⊕
(unconfirmed) 0.165 M⊕ — 26.5 — — —

References

  1. ↑ 1.0 1.1 1.2 1.3 "HD 175289". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+175289. 
  2. ↑ Molenda-Żakowicz, J.; Sousa, S. G.; Frasca, A.; Uytterhoeven, K.; Briquet, M.; Van Winckel, H.; Drobek, D.; Niemczura, E. et al. (2013). "Atmospheric parameters of 169 F-, G-, K- and M-type stars in the Kepler field". Monthly Notices of the Royal Astronomical Society 434 (2): 1422. doi:10.1093/mnras/stt1095. Bibcode: 2013MNRAS.434.1422M. 
  3. ↑ 3.0 3.1 3.2 Ziegler, Carl; Law, Nicholas M.; Baranec, Christoph; Howard, Ward; Morton, Tim; Riddle, Reed; Duev, Dmitry A.; Salama, Maïssa et al. (2018). "Robo-AO Kepler Survey. V. The Effect of Physically Associated Stellar Companions on Planetary Systems". The Astronomical Journal 156 (2): 83. doi:10.3847/1538-3881/aace59. Bibcode: 2018AJ....156...83Z. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G.  Gaia EDR3 record for this source at VizieR.
  5. ↑ 5.0 5.1 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G.  Gaia EDR3 record for this source at VizieR.
  6. ↑ 6.0 6.1 Kraus, Adam L.; Ireland, Michael J.; Huber, Daniel; Mann, Andrew W.; Dupuy, Trent J. (2016). "The Impact of Stellar Multiplicity on Planetary Systems. I. The Ruinous Influence of Close Binary Companions". The Astronomical Journal 152 (1): 8. doi:10.3847/0004-6256/152/1/8. Bibcode: 2016AJ....152....8K. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 Bellinger, E. P.; Hekker, S.; Angelou, G. C.; Stokholm, A.; Basu, S. (2020). "Stellar ages, masses, and radii from asteroseismic modeling are robust to systematic errors in spectroscopy". Astronomy & Astrophysics 622: A130. doi:10.1051/0004-6361/201834461. 
  8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 Kayhan, C.; Yıldız, M.; Çelik Orhan, Z. (2019). "Asteroseismic investigation of 20 planet and planet-candidate host stars". Monthly Notices of the Royal Astronomical Society 490 (2): 1509–1517. doi:10.1093/mnras/stz2634. 
  9. ↑ Suto, Yasushi; Kamiaka, Shoya; Benomar, Othman (2019). "Asteroseismic Determination of the Stellar Rotation Period of the Kepler Transiting Planetary Systems and its Implications for the Spin–Orbit Architecture". The Astronomical Journal 157 (5): 172. doi:10.3847/1538-3881/ab0f33. Bibcode: 2019AJ....157..172S. 
  10. ↑ 10.0 10.1 Van Eylen, V.; Lund, M. N.; Aguirre, V. Silva; Arentoft, T.; Kjeldsen, H.; Albrecht, S.; Chaplin, W. J.; Isaacson, H. et al. (2014). "What Asteroseismology can do for Exoplanets: Kepler-410A b is a Small Neptune around a Bright Star, in an Eccentric Orbit Consistent with Low Obliquity". The Astrophysical Journal 782 (1): 14. doi:10.1088/0004-637X/782/1/14. Bibcode: 2014ApJ...782...14V. 
  11. ↑ Teske, Johanna K.; Ciardi, David R.; Howell, Steve B.; Hirsch, Lea A.; Johnson, Rachel A. (2018). "The Effects of Stellar Companions on the Observed Transiting Exoplanet Radius Distribution". The Astronomical Journal 156 (6): 292. doi:10.3847/1538-3881/aaed2d. Bibcode: 2018AJ....156..292T. 
  12. ↑ 12.0 12.1 Gajdoš, Pavol; Vaňko, Martin; Pribulla, Theodor; Dupkala, Daniel; Šubjak, Ján; Skarka, Marek; Kabáth, Petr; Hambálek, Ľubomír et al. (2019). "Transit timing variations, radial velocities, and long-term dynamical stability of the system Kepler-410". Monthly Notices of the Royal Astronomical Society 484 (3): 4352–4359. doi:10.1093/mnras/stz305. 

Coordinates: Sky map 18h 52m 36.1606s, +45° 08′ 23.3432″




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