VV Corvi
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Corvus |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[3] |
| Apparent magnitude (V) | 5.27[3] |
| Characteristics | |
| Spectral type | F5IV[3] |
| U−B Template:Engvar | +0.10[4] |
| B−V Template:Engvar | +0.42[4] |
| Astrometry | |
| Radial velocity (Rv) | -19.0[5] km/s |
| Proper motion (μ) | RA: -117.92[2] mas/yr Dec.: 7.86[2] mas/yr |
| Parallax (π) | 11.72±1.90 mas[2] |
| Distance | approx. Template:Rnd ly (approx. Template:Rnd pc) |
| Other designations | |
| BD−12° 3676, HD 110317, HIP 61910, HR 4821.[3] | |
| Database references | |
| SIMBAD | data |
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VV Corvi (abbreviated as VV Crv) is a close spectroscopic binary in the constellation Corvus. It is also an eclipsing binary, varying from magnitude 5.19 to 5.34 over 3.145 days.[6] The two stars orbit each other with a period of 1.46 days and an eccentricity of 0.088.[7] The mass ratio of the two stars is 0.775±0.024.[8] The primary is 1.978 ± 0.010 times as massive as the Sun, 18.253 ± 2.249 its luminosity and has 3.375 ± 0.010 the Sun's radius. The secondary is 1.513 ± 0.008 times as massive as the Sun, 4.745 ± 0.583 its luminosity and has 1.650 ± 0.008 the Sun's radius. Both are yellow-white main sequence stars of spectral type F5V, though the primary has begun expanding and cooling as it nears the end of its time on the main sequence.[9] A tertiary companion was discovered during the Two Micron All-Sky Survey.[10]
The system shares a common proper motion with HR 4822, which is 5"2 away.[9]
References
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