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.
| 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[1] mas |
| Distance | 97.9 ± 0.1 ly (30.01 ± 0.04 pc) |
| Details | |
| Mass | 1.21 ± 0.02[2] M☉ |
| Radius | 1.27 ± 0.03[2] R☉ |
| Luminosity | 2.08 ± 0.01[2] L☉ |
| Surface gravity (log g) | 4.31 ± 0.03[2] cgs |
| Temperature | 6163 ± 41[2] K |
| Rotation | 12.3±0.15 d[3] |
| Rotational velocity (v sin i) | 3.6+0.3 −1.0[3] km/s |
| Age | 2.6 ± 0.6[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
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]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.21±0.05 MJ | 0.520±0.009 | 119.27±0.02 | 0.27±0.02 | — | — |
See also
- List of extrasolar planets
References
- 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.
- 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.
- 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.
- "HD 52265". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-23.
- "Approved names". NameExoworlds. Retrieved 2020-01-02.
- "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- 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.
- "Exoplanets Galore!" (Press release). Garching, Germany: European Southern Observatory. April 15, 2000. Retrieved December 30, 2012.
- 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.
- 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.
External links
- "Notes for star HD 52265". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-22.
- Wobbly, Sunlike Star Being Pulled by Giant Alien Planet, Charles Q. Choi
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