HD 27631
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Horologium |
| Right ascension | 04h 19m 45.469s[1] |
| Declination | –41° 57′ 36.97″[1] |
| Apparent magnitude (V) | +8.26 |
| Characteristics | |
| Spectral type | G3IV |
| Astrometry | |
| Proper motion (μ) | RA: –41.29 ± 0.62[1] mas/yr Dec.: –93.32 ± 0.61[1] mas/yr |
| Parallax (π) | 21.98 ± 0.68[1] mas |
| Distance | 148 ± 5 ly (45 ± 1 pc) |
| Details | |
| Mass | 0.94 ± 0.04 M☉ |
| Radius | 1 R☉ |
| Luminosity | 0.88 L☉ |
| Surface gravity (log g) | 4.48 ± 0.09 cgs |
| Temperature | 5737 ± 36 K |
| Metallicity [Fe/H] | –0.12 ± 0.05 dex |
| Age | 4.4 ± 3.6 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 27631 is a G-class yellow dwarf star.
Planetary system
From 1998 to 2012, the star was under observance from "the CORALIE echelle spectrograph at La Silla Observatory".
In 2012, a long-period, wide-orbiting planet was deduced by radial velocity. This was published in November.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.45 ± 0.14 MJ | 3.25 ± 0.07 | 2208 ± 66 | 0.12 ± 0.06 | — | — |
References
- 1 2 3 4 5 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 - ↑ Marmier, M.; et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics. 551. A90. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639.
- ↑ "hd_27631_b".
External links
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