HD 45652
HD 45652 (Lusitânia) is a G8-K0 star located in the constellation Monoceros.[3] It is approximately 114 light years (35 parsecs) from Earth with apparent magnitude 8.13.[2]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 06h 29m 13.1919s[1] |
| Declination | +10° 56′ 02.0061″[1] |
| Apparent magnitude (V) | 8.13[2] |
| Characteristics | |
| Spectral type | G8-K0[3] |
| B−V color index | 0.85[2] |
| V−R color index | 0.5[2] |
| R−I color index | 0.4[2] |
| Astrometry | |
| Proper motion (μ) | RA: 206.328±0.106[1] mas/yr Dec.: −62.573±0.089[1] mas/yr |
| Parallax (π) | 28.6622 ± 0.0551[1] mas |
| Distance | 113.8 ± 0.2 ly (34.89 ± 0.07 pc) |
| Absolute magnitude (MV) | 5.3[4] |
| Details | |
| Mass | 0.83 ± 0.05[3] M☉ |
| Surface gravity (log g) | 4.32 ± 0.21[3] cgs |
| Temperature | 5312 ± 68[3] K |
| Metallicity | [Fe/H] = 0.29 ± 0.07[3] |
| Age | 6.0 ± 2.9[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
In May 2008, the discovery of an extrasolar planet, HD 45652 b, orbiting the star was announced. The planet was detected by the radial velocity method, using observations made from 2005 to 2007.[3]
HD 45652 was officially named Lusitânia on the 17th of December 2019 after the IAU100 press conference in Paris by the IAU (International Astronomical Union)[6].
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.433±0.076 MJ | 0.237±0.011 | 44.073±0.0048 | 0.607±0.026 | — | — |
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.
- NLTT 16570, entry, SIMBAD. Accessed on line June 13, 2008.
- Santos, N. C.; et al. (2008). "ELODIE metallicity-biased search for transiting Hot Jupiters. V. An intermediate-period Jovian planet orbiting HD 45652". Astronomy and Astrophysics. 487 (1): 369–372. arXiv:0805.1019. Bibcode:2008A&A...487..369S. doi:10.1051/0004-6361:200809402.
- From parallax and apparent magnitude.
- 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.
- "112 sets of exoplanets and host stars named in the IAU100". International Astronomical Union. Retrieved 2019-12-18.
- Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5.
External links
- "Notes for star HD 45652". The Extrasolar Planets Encyclopaedia.
- "NLTT 16570 -- High proper-motion Star". SIMBAD.
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