HD 1606
Star in the constellation Andromeda
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HD 1606 is a single[14] star in the northern constellation of Andromeda, positioned a few degrees to the northeast of the bright star Alpheratz. It has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.87.[3] Although it is suspected of variability, none has been conclusively found.[15] The star is located at a distance of approximately 580 light-years (179 parsecs) from the Sun based on parallax,[2] and is drifting further away with a radial velocity of +4 km/s.[8] It has an absolute magnitude of −0.5.[9]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda[1] |
| Right ascension | 00h 20m 24.40107s[2] |
| Declination | +30° 56′ 08.2099″[2] |
| Apparent magnitude (V) | 5.869[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | B7V[5] |
| U−B color index | −0.45[6] |
| B−V color index | −0.10[6] |
| Variable type | Suspected[7] |
| Astrometry | |
| Radial velocity (Rv) | 3.8[8] km/s |
| Proper motion (μ) | RA: 15.734±0.159[2] mas/yr Dec.: −2.957±0.125[2] mas/yr |
| Parallax (π) | 5.5900±0.1069 mas[2] |
| Distance | 580 ± 10 ly (179 ± 3 pc) |
| Absolute magnitude (MV) | −0.5[9] |
| Details | |
| Mass | 3.75±0.08[4] M☉ |
| Radius | 2.9[10] R☉ |
| Luminosity | 245+36 −31[4] L☉ |
| Surface gravity (log g) | 3.988±0.017[11] cgs |
| Temperature | 13,186±100[11] K |
| Rotational velocity (v sin i) | 113±8[11] km/s |
| Age | 211[12] Myr |
| Other designations | |
| NSV 128, AG+30°32, BD+30°42, GC 408, HD 1606, HIP 1630, HR 78, SAO 53820, PPM 65213[13] | |
| Database references | |
| SIMBAD | data |
This is a B-type main-sequence star with a stellar classification of B7V,[5] which means it is currently generating energy through hydrogen fusion at its core. It has 3.75[4] times the mass of the Sun and a fairly high rate of spin, showing a projected rotational velocity of 113 km/s.[11] The star is radiating 245[4] times the luminosity of the Sun from its photosphere at an effective temperature of 13,186 K.[11]