HD 37646
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.43[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | B8IV[5] |
| U−B Template:Engvar | −0.39[3] |
| B−V Template:Engvar | −0.11[3] |
| Variable type | eclipsing binary[6] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[7] km/s |
| Proper motion (μ) | RA: +15.94[2] mas/yr Dec.: −26.95[2] mas/yr |
| Parallax (π) | 5.37±0.81 mas[2] |
| Distance | approx. Template:Rnd ly (approx. Template:Rnd pc) |
| Absolute magnitude (MV) | +0.11[1] |
| Details | |
| Mass | 3.43[4] Template:Solar mass |
| Radius | 2.21[8] Template:Solar radius |
| Luminosity | 177[4] Template:Solar luminosity |
| Surface gravity (log g) | 4.35[8] cgs |
| Temperature | 12,589[4] K |
| Rotational velocity (v sin i) | 130[9] km/s |
| Age | 157[10] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| BD+29°953, HD 37646, HIP 26781, HR 1945, SAO 77393 | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
HD 37646 is an eclipsing binary in the northern constellation of Auriga. The companion has only been detected by very shallow eclipses[6] and by the radial velocity variations it produces in the primary star.[11]
In addition to the spectroscopic companion, the 7th-magnitude star HD 37647 shares a common proper motion and parallax with HD 37646. The pair have an angular separation of 26.005″.[5]
References
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Script error: No such module "Check for unknown parameters".