HD 36678
Star in the constellation Auriga
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HD 36678 is single[9] star in the northern constellation of Auriga. This star is dimly visible to the naked eye with an apparent visual magnitude of 5.83.[3] It is located at a distance of approximately 880 light years from the Sun based on parallax.[2]
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 05h 36m 35.21822s[2] |
| Declination | +54° 25′ 43.1710″[2] |
| Apparent magnitude (V) | 5.8334[3] |
| Characteristics | |
| Evolutionary stage | AGB[4] |
| Spectral type | M0III[4] |
| Apparent magnitude (G) | 5.01[2] |
| U−B color index | +1.98[5] |
| B−V color index | +1.671±0.006[1] |
| Variable type | suspected[6] |
| Astrometry | |
| Radial velocity (Rv) | 0.91±0.14[2] km/s |
| Proper motion (μ) | RA: −6.351±0.055[2] mas/yr Dec.: −10.625±0.048[2] mas/yr |
| Parallax (π) | 3.7121±0.0635 mas[2] |
| Distance | 880 ± 20 ly (269 ± 5 pc) |
| Absolute magnitude (MV) | −1.00[1] |
| Details | |
| Mass | 1.38[7] M☉ |
| Radius | 63.2+7.0 −4.7[8] R☉ |
| Luminosity | 875±34[8] L☉ |
| Surface gravity (log g) | 0.79[7] cgs |
| Temperature | 3,950+154 −202[8] K |
| Metallicity [Fe/H] | −0.12[7] dex |
| Other designations | |
| BD+54°914, HD 36678, HIP 26344, HR 1866, SAO 25276, Gaia DR3 264919909305988224 | |
| Database references | |
| SIMBAD | data |
This is an aging red giant star with a stellar classification of M0III.[4] It is currently on the asymptotic giant branch of the HR diagram,[4] and has expanded to ~63[8] times the radius of the Sun. The star is radiating ~875[8] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,950 K.[8]
The brightness of HD 36678 is suspected of being variable. Hipparcos photometry showed maximum and minimum apparent magnitudes of 5.806 and 5.855 respectively, in the Hipparcos photometric band.[6] No period was found, the variability has not been confirmed, and the star is not formally listed as a variable star.[10]