HD 52265

HD 52265 is a 6th-magnitude G-type main sequence star located approximately 98 light-years away in the constellation of Monoceros. It is 21% more massive than and more than twice as luminous as the Sun. The age of the star is roughly 2.6 billion years. The star HD 52265 is named Citalá. The name was selected in the NameExoWorlds campaign by El Salvador, during the 100th anniversary of the IAU. Citalá means River of stars in the native Nahuat language.[5][6]

HD 52265 / Citalá
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Monoceros
Right ascension 07h 00m 18.0357s[1]
Declination −05° 22′ 01.7785″[1]
Apparent magnitude (V) 6.301
Characteristics
Spectral type G0V
Astrometry
Proper motion (μ) RA: −116.524 ± 0.071[1] mas/yr
Dec.: 80.467 ± 0.073[1] mas/yr
Parallax (π)33.3264 ± 0.0467 mas[1]
Distance97.9 ± 0.1 ly
(30.01 ± 0.04 pc)
Details
Mass1.21 ± 0.02[2] M☉
Radius1.27 ± 0.03[2] R☉
Luminosity2.08 ± 0.01[2] L☉
Surface gravity (log g)4.31 ± 0.03[2] cgs
Temperature6163 ± 41[2] K
Rotation12.3±0.15 d[3]
Rotational velocity (v sin i)3.6+0.3
−1.0[3] km/s
Age2.6 ± 0.6[2] Gyr
Other designations
Citalá, BD−05°1910, HIP 33719, HR 2622, SAO 134031[4]
Database references
SIMBADdata

Planetary system

In 2000 the California and Carnegie Planet Search team announced the discovery of an extrasolar planet orbiting the star.[7] It was independently discovered by the Geneva Extrasolar Planet Search team.[8][9] The second planet in the system is suspected since 2013.[10]

The HD 52265 planetary system[11]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b / Cayahuanca ≥1.21±0.05 MJ 0.520±0.009 119.27±0.02 0.27±0.02 — —

See also

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
  3. Ballot, J.; et al. (2011). "Accurate p-mode measurements of the G0V metal-rich CoRoT target HD 52265". Astronomy and Astrophysics. 530. A97. arXiv:1105.3551. Bibcode:2011A&A...530A..97B. doi:10.1051/0004-6361/201116547.
  4. "HD 52265". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-23.
  5. "Approved names". NameExoworlds. Retrieved 2020-01-02.
  6. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
  7. 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. Bibcode:2000ApJ...545..504B. doi:10.1086/317796.
  8. "Exoplanets Galore!" (Press release). Garching, Germany: European Southern Observatory. April 15, 2000. Retrieved December 30, 2012.
  9. Naef, D.; et al. (2001). "The CORALIE survey for southern extrasolar planets V. 3 new extrasolar planets". Astronomy and Astrophysics. 375 (1): 205–218. arXiv:astro-ph/0106255. Bibcode:2001A&A...375..205N. doi:10.1051/0004-6361:20010841.
  10. Wittenmyer, Robert A.; Wang, Songhu; Horner, Jonathan; Tinney, C. G.; Butler, R. P.; Jones, H. R. A.; O'Toole, S. J.; Bailey, J.; Carter, B. D.; Salter, G. S.; Wright, D.; Zhou, Ji-Lin (2013), "Forever alone? Testing single eccentric planetary systems for multiple companions", The Astrophysical Journal Supplement Series, 208 (1): 2, arXiv:1307.0894, Bibcode:2013ApJS..208....2W, doi:10.1088/0067-0049/208/1/2, S2CID 14109907
  11. 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. arXiv:1901.08471. Bibcode:2019MNRAS.484.5859W. doi:10.1093/mnras/stz290. S2CID 118915974.


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