75 Ceti
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Cetus |
| Right ascension | 02h 32m 09.422s |
| Declination | −01° 02′ 05.62″ |
| Apparent magnitude (V) | +5.36 |
| Characteristics | |
| Spectral type | G3 III |
| Astrometry | |
| Proper motion (μ) |
RA: -24.72 ± 0.46 mas/yr Dec.: -32.08 ± 0.40 mas/yr |
| Parallax (π) | 12.28 ± 0.45mas |
| Distance | 266 ± 10 ly (81 ± 3 pc) |
| Absolute magnitude (MV) | 0.808 |
| Details | |
| Mass | 2.16 M☉ |
| Radius | 10.5 (9.5–11.5) R☉ |
| Luminosity | 53.7 L☉ |
| Surface gravity (log g) | 2.75 cgs |
| Temperature | 4,784 K |
| Metallicity | −0.05 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia |
data |
75 Ceti is a G-type giant with at least one planet.
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, 75 Ceti itself is known as the Tenth Star of Circular Celestial Granary.
The planet's discoverers consider this planet b "typical" of gas giants. Note that (like many recorded planets) b takes in much more insolation than does Jupiter and, indeed, Earth.
There may be additional periodic factors in the data, corresponding to m sin i of around 0.4 MJ and 1 MJ, at distances of ∼0.9 AU and ∼4 AU. If these are confirmed, they are more irradiated than Earth as well.
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