Epsilon Volantis
Location of ε Volantis (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 08h 07m 55.7945s[1] |
| Declination | −68° 37′ 01.433″[1] |
| Apparent magnitude (V) | +4.33[2] |
| Characteristics | |
| Spectral type | B5 III[3] (B6 IV + B8 + A2 V + A2 V)[4] |
| B−V color index | −0.12[2] |
| Astrometry | |
| Radial velocity (Rv) | +9.6[5] km/s |
| Proper motion (μ) | RA: −29.781(166)[1] mas/yr Dec.: 29.887(177)[1] mas/yr |
| Parallax (π) | 5.0597±0.1248 mas[1] |
| Distance | 640 ± 20 ly (198 ± 5 pc) |
| Absolute magnitude (MV) | −1.82[6] |
| Details[7] | |
| ε Vol Aa | |
| Surface gravity (log g) | 3.62 cgs |
| Temperature | 14,348 K |
| Rotational velocity (v sin i) | 1 km/s |
| ε Vol Ab | |
| Surface gravity (log g) | 4.07 cgs |
| Temperature | 10,772 K |
| Rotational velocity (v sin i) | 7 km/s |
| Other designations | |
| ε Vol, CPD−68°736, HD 68520, HIP 39794, HR 3223, SAO 250128, WDS J08079–6837[8] | |
| Database references | |
| SIMBAD | data |
Epsilon Volantis, Latinized from ε Volantis, is a quadruple star system[4] in the southern constellation Volans. This star is at the center of the constellation of Volans and connects the "wings" of the constellation. Based upon parallax measurements, is roughly 640 light years from Earth.
The primary component, Epsilon Volantis A, is a spectroscopic binary.[9] It is classified a blue-white B-type giant star and has an apparent magnitude of +4.35. (The individual components are classified as B6IV and B8.)[4] The binary system has an orbital period of 14.1683 days. The binary's companion, Epsilon Volantis B, is 6.05 arcseconds away and has an apparent magnitude of +8.1. It too is a spectroscopic binary, consisting of two A-type main sequence stars with stellar classifications of A2 V and an orbital period of "a few days".[4]
References
[edit | edit source]- ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). (Erratum: Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).). Gaia EDR3 record for this source at VizieR.
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
