![]() ![]() Location of β Ceti (circled) |
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Observation data Epoch J2000 Equinox J2000 |
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Constellation | Cetus |
Right ascension | 00 |
Declination | –17° 59′ 11.7827″ |
Apparent magnitude (V) | 2.02 |
Characteristics | |
Spectral type | K0 III |
U−B color index | +0.88 |
B−V color index | +1.01 |
Variable type | Rotationally |
Astrometry | |
Radial velocity (Rv) | +12.9 km/s |
Proper motion (μ) | RA: +232.55 mas/yr |
Parallax (π) | 33.86 ± 0.16mas |
Distance | 96.3 ± 0.5 ly (29.5 ± 0.1 pc) |
Absolute magnitude (MV) | –0.13 |
Details | |
Mass | 2.8M☉ |
Radius | 16.78 ± 0.25R☉ |
Luminosity | 139.1 ± 7.0L☉ |
Surface gravity (log g) | 2.7 |
Temperature | 4,797K |
Metallicity [Fe/H] | –0.09dex |
Rotational velocity (v sin i) | 18 km/s |
Age | > 1Gyr |
Other designations | |
Deneb Kaitos, Diphda, Difda al Thani, Rana Secunda, 16 Cet, BD–18 115, GCTP 134.00, Gl 31, HD 4128, HIP 3419, HR 188, SAO 147420.
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Database references | |
SIMBAD | data |
ARICNS | data |