Mu Ceti
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Ceti |
| Right ascension | 02h 44m 56.0s |
| Declination | 10° 06′ 51″ |
| Apparent magnitude (V) | +4.27 [combined] |
| Characteristics | |
| Spectral type | F0 V |
| Astrometry | |
| Distance | 84ly (? pc) |
| Absolute magnitude (MV) | +2.17 |
| Details | |
| Mass | 1.6 M☉ |
| Radius | 1.7 R☉ |
| Luminosity | 7.5 L☉ |
| Temperature | 7,141 K |
| Rotational velocity (v sin i) | 45.1±2.3 km/s |
| Age | 3.3 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Mu Ceti (μ Ceti) is a binary system located in the constellation Cetus. Mu Ceti is a quadruple visual star system. The combined apparent magnitude of the system is +4.27, and is located 84 light years from the Sun.
In Chinese, 天囷 (Tiān Qūn), meaning Circular Celestial Granary, refers to an asterism consisting of α Ceti, κ1 Ceti, λ Ceti, μ Ceti, ξ1 Ceti, ξ2 Ceti, ν Ceti, γ Ceti, δ Ceti, 75 Ceti, 70 Ceti, 63 Ceti and 66 Ceti. Consequently, Mu Ceti itself is known as the Fourth Star of Circular Celestial Granary.
Mu Ceti A is an F0V subgiant, believed to be a Delta Scuti variable star.
The other components, Mu Ceti B, C and D are G3V, G2V and G6V respectively. The dimmer components were all discovered during occultations of Mu Ceti by the Moon. One of them orbits at a period of 1202 days.
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