| |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 03h11m 56.27016s[1] |
| Declination | +74° 23′ 37.1670″[1] |
| Apparent magnitude (V) | 4.85[2] |
| Characteristics | |
| Spectral type | A2Vnn[3] |
| U−B color index | +0.05 |
| B−V color index | +0.035±0.006[2] |
| Astrometry | |
| Radial velocity (Rv) | 11.9±3.1[2] km/s |
| Proper motion (μ) | RA: +13.895[1] mas/yr Dec.: −86.650[1] mas/yr |
| Parallax (π) | 19.9554 ± 0.1695 mas[1] |
| Distance | 163 ± 1 ly (50.1 ± 0.4 pc) |
| Absolute magnitude (MV) | 1.32[2] |
| Details | |
| Mass | 1.80+0.32 −0.29[4] M☉ |
| Radius | 2.7[5] R☉ |
| Luminosity | 27.27[2] L☉ |
| Surface gravity (log g) | 4.20±0.25[4] cgs |
| Temperature | 8,875±1,000[4] K |
| Metallicity [Fe/H] | −0.11±0.26[6] dex |
| Rotational velocity (v sin i) | 250[7] km/s |
| Age | 71+317 −60[4] Gyr |
| Other designations | |
BD+73°168, FK5 2222, GC 3759, HD 19275, HIP 14862, HR 932, SAO 4840, GSC 04325-01562[8] | |
| Database references | |
| SIMBAD | data |
HD 19275 is a single[9] star in the northern constellationofCassiopeia. It has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.85.[2] The distance to HD 19275 is 163 light years as determined using parallax measurements.[1] It is drifting further away from the Sun with a radial velocity of around 12 km/s.[2]
This object is an A-type main-sequence star with a stellar classification of A2Vnn.[3] The 'nn' suffix indicates "nebulous" (broad) absorption lines in the spectrum due to rapid rotation. It is spinning with a projected rotational velocity of 250 km/s, which is giving the star an equatorial bulge that is estimated to be 15% larger than the polar radius.[7] The object is an estimated 71[4] million years old with 1.8[4] times the mass of the Sun and about 2.7[5] times the Sun's radius. It is radiating 27[2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,875 K.[4]
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