HD 85628
HD 85628 (MASCARA-4) is a binary star system in the constellation of Carina. The host star, HD 85628 A, is an A-type main-sequence star, the primary star of the system, with a hot Jupiter in orbit around it. The secondary star is HD 85628 B, a K-type main-sequence star. Little is known about it.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| A | |
| Right ascension | 09h 50m 19.201s |
| Declination | −66° 06′ 49.90″ |
| B | |
| Right ascension | 09h 50m 18.697s |
| Declination | −66° 06′ 53.00″ |
| Characteristics | |
| A | |
| Evolutionary stage | main sequence |
| Spectral type | A3V |
| Variable type | planetary transit |
| B | |
| Evolutionary stage | main sequence |
| Spectral type | K8V |
| Astrometry | |
| A | |
| Proper motion (μ) | RA: 5.910±0.019 mas/yr Dec.: −15.044±0.019 mas/yr |
| Parallax (π) | 5.9437 ± 0.0170 mas |
| Distance | 549 ± 2 ly (168.2 ± 0.5 pc) |
| B | |
| Proper motion (μ) | RA: 5.702±0.032 mas/yr Dec.: −13.161±0.029 mas/yr |
| Parallax (π) | 5.9266 ± 0.0253 mas |
| Distance | 550 ± 2 ly (168.7 ± 0.7 pc) |
| Details | |
| A | |
| Mass | 1.75 M☉ |
| Radius | 1.92 R☉ |
| Luminosity | 12.2 L☉ |
| Surface gravity (log g) | 4.1 cgs |
| Temperature | 7,800 K |
| Metallicity [Fe/H] | ~0 dex |
| Age | 0.8 Gyr |
| B | |
| Mass | 0.6 M☉ |
| Other designations | |
bRing-1, HD 85628, MASCARA-4 | |
| Database references | |
| SIMBAD | data |
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