HD 5789/5788
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| HD 5789 | |
| Right ascension | 01h 00m 03.56s |
| Declination | +44° 42′ 47.7″ |
| Apparent magnitude (V) | 6.06 |
| HD 5788 | |
| Right ascension | 01h 00m 03.37s |
| Declination | +44° 42′ 40.1″ |
| Apparent magnitude (V) | 5.69 |
| Characteristics | |
| HD 5789 | |
| Spectral type | B9.5Vn[1] |
| B−V color index | -0.03 |
| HD 5788 | |
| Spectral type | A2Vn[2] |
| U−B color index | -0.06 |
| B−V color index | -0.01 |
| Astrometry | |
| Radial velocity (Rv) | 4.40[1] km/s |
| Proper motion (μ) | RA: 13.85[1] mas/yr Dec.: -23.83[1] mas/yr |
| Parallax (π) | 8.40 ± 0.76[1] mas |
| Distance | 390 ± 40 ly (120 ± 10 pc) |
| Radial velocity (Rv) | 17[2] km/s |
| Proper motion (μ) | RA: 10[2] mas/yr Dec.: -26[2] mas/yr |
| Other designations | |
| HD 5789: HR 283, SAO 36833. | |
| HD 5788: HR 282, SAO 36832. | |
| Database references | |
| HD 5789 | |
| SIMBAD | data |
| HD 5788 | |
| SIMBAD | data |
HD 5789 and HD 5788 is a pair of stars comprising a binary star[3] system in the constellation Andromeda. Located approximately 119 parsecs (390 ly) away, the primary is a hot, massive blue star with an apparent magnitude of 6.06,[1] while the secondary is slightly smaller and cooler but brighter, with an apparent magnitude of 5.69.[2] Both stars are main-sequence stars, meaning that they are currently fusing hydrogen into helium in their cores.[1][2]
References
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