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Location of ε Andromedae (lower left of center) |
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
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|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 38m 33.3458s[1] |
| Declination | +29° 18′ 42.305″[1] |
| Apparent magnitude (V) | 4.37[1] |
| Characteristics | |
| Spectral type | G6IIIFe-3CH1[2] |
| U−B color index | +0.47[2] |
| B−V color index | +0.87[2] |
| V−R color index | 0.6[1] |
| R−I color index | +0.51[2] |
| Astrometry | |
| Radial velocity (Rv) | −83.6 ± 0.9[1] km/s |
| Proper motion (μ) | RA: −229.42[1] mas/yr Dec.: −254.09[1] mas/yr |
| Parallax (π) | 19.34 ± 0.76[1] mas |
| Distance | 169 ± 7 ly (52 ± 2 pc) |
| Absolute magnitude (MV) | 0.8[3] |
| Details | |
| Mass | 2.4[4] M☉ |
| Radius | 9.8[4] R☉ |
| Luminosity | 52[4] L☉ |
| Temperature | 4930[4] K |
| Rotational velocity (v sin i) | 9[2] km/s |
| Age | 6.5 × 108[4] years |
| Other designations | |
| Database references | |
| SIMBAD | data |
Coordinates: 00h 38m 33.3458s, +29° 18′ 42.305″
Epsilon Andromedae (Epsilon And, ε Andromedae, ε And) is a G-type giant star in the constellation of Andromeda.[1] It has an apparent visual magnitude of approximately 4.37.[1]
ε Andromedae is believed to be a red clump star which is fusing helium in its core. Its orbit in the Milky Way is highly eccentric, causing it to move rapidly relative to the Sun and its neighboring stars.[4]
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