HD 63454
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 07h 39m 21.851s[1] |
| Declination | −78° 16′ 44.31″[1] |
| Apparent magnitude (V) | 9.40 |
| Characteristics | |
| Spectral type | K4V |
| Astrometry | |
| Proper motion (μ) | RA: −20.82 ± 0.85[1] mas/yr Dec.: −40.64 ± 0.94[1] mas/yr |
| Parallax (π) | 28.95 ± 0.81 mas[1] |
| Distance | 113 ± 3 ly (34.5 ± 1.0 pc) |
| Details | |
| Mass | 0.79 ± 0.02[2] M☉ |
| Radius | 0.72 ± 0.01[2] R☉ |
| Luminosity | 0.242 ± 0.003[2] L☉ |
| Surface gravity (log g) | 4.62 ± 0.02[2] cgs |
| Temperature | 4788 ± 20[2] K |
| Age | 2.7 ± 3.3[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 63454 is a ninth magnitude K-type main sequence star located approximately 117 light-years away in the constellation of Chamaeleon. It is somewhat cooler and less luminous than our Sun. To see the star one needs a small telescope. It is located near the south celestial pole and is never visible north of latitude 12°N.
Planetary system
On Valentine’s Day 2005, a hot Jupiter HD 63454 b was found by Moutou, Mayor, and Bouchy using the radial velocity method.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >0.38 MJ | 0.036 | 2.817822 ± 0.000095 | 0 | — | — |
See also
References
- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ^ a b c d e f 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.
- ^ a b Moutou, C.; et al. (2005). "The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454". Astronomy and Astrophysics. 439 (1): 367–373. arXiv:1411.7048. Bibcode:2005A&A...439..367M. doi:10.1051/0004-6361:20052826.
External links
- "Notes for star HD 63454". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-22.
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