Zeta Andromedae
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| Observation data Epoch J2000.0 |
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|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 47m 20.3s |
| Declination | +24° 16' 02" |
| Apparent magnitude (V) | +4.08 |
| Distance | 181 ± 8 ly (56 ± 3 pc) |
| Spectral type | K1IIe |
| Other designations | |
Zeta Andromedae (ζ And / ζ Andromedae) is a star system in the constellation Andromeda. It is approximately 181 light years from Earth.
Zeta Andromedae is an eclipsing spectroscopic binary which is classified as an orange K-type bright giant with a mean apparent magnitude of +4.08. In addition to brightness variation due to eclipses, the system is also an RS Canum Venaticorum type or Beta Lyrae type variable star. Its brightness varies from magnitude +3.92 to +4.14 with a period of 17.77 days. The orbital period of the binary is 17.77 days.
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