HD 85390
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Vela |
| Right ascension | 09h 50m 02.497s[1] |
| Declination | –49° 47′ 24.97″[1] |
| Apparent magnitude (V) | 8.55 |
| Characteristics | |
| Spectral type | K1.5V |
| Apparent magnitude (B) | 9.40 |
| Apparent magnitude (J) | 7.012 |
| Apparent magnitude (H) | 6.612 |
| Apparent magnitude (K) | 6.491 |
| B−V color index | 0.85 |
| Astrometry | |
| Radial velocity (Rv) | 32.5 km/s |
| Proper motion (μ) | RA: 24.32 ± 0.5[1] 7 mas/yr Dec.: –60.59 ± 0.52[1] mas/yr |
| Parallax (π) | 30.89 ± 0.62[1] mas |
| Distance | 106 ± 2 ly (32.4 ± 0.6 pc) |
| Absolute magnitude (MV) | 5.896 |
| Details | |
| Mass | 0.80 M☉ |
| Radius | 0.82 ± 0.06 R☉ |
| Luminosity | 0.431 ± 0.031 L☉ |
| Surface gravity (log g) | 4.38 cgs |
| Temperature | 5170 ± 100 K |
| Metallicity [Fe/H] | –0.07 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 85390 is a main sequence star of spectral class K1 located approximately 106 light years away[1] in the constellation Vela, appearing as 8.55 magnitude star. This star is smaller, cooler, dimmer, and less massive than our Sun. Also its metal content is seven-sixths as much as the Sun. In 2009, a planet with a minimum mass of about 1/7 of Jupiter's was found in orbit around the star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥42.0 ± 3.6 M⊕ | 1.52 ± 0.04 | 788 ± 25 | 0.41 ± 0.12 | — | — |
See also
References
- 1 2 3 4 5 6 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 - ↑ Mordasini, C.; et al. (2011). "The HARPS search for southern extrasolar planets XXIV. Companions to HD 85390, HD 90156, and HD 103197: a Neptune analog and two intermediate-mass planets". Astronomy and Astrophysics. 526. A111. arXiv:1010.0856. Bibcode:2011A&A...526A.111M. doi:10.1051/0004-6361/200913521.
Coordinates: 
09h 50m 02.4969s, −49° 47′ 24.959″
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