81 Ceti b

81 Ceti b
Exoplanet List of exoplanets
Parent star
Star 81 Ceti
Constellation Cetus
Right ascension (α) 02h 37m 41.80s[1]
Declination (δ) –03° 23 46.2[1]
Apparent magnitude (mV) 5.65
Distance300 ± 10[1] ly
(93 ± 4[1] pc)
Spectral type G5III
Orbital elements
Semi-major axis(a) 2.5 AU
(370 Gm)
Periastron (q) 2.0 AU
(300 Gm)
Apastron (Q) 3.0 AU
(440 Gm)
Eccentricity (e) 0.206 ± 0.029
Orbital period(P) 952.7 ± 8.8 d
(2.608 y)
Argument of
periastron
(ω) 175 ± 69°
Time of periastron (T0) 2486 ± 26 JD
Physical characteristics
Minimum mass(m sin i)5.3 MJ
Discovery information
Discovery date July 3, 2008
Discoverer(s) Sato et al.
Discovery method Doppler Spectroscopy
Discovery status Published
Other designations
HD 16400 b
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

81 Ceti b (abbreviated 81 Cet b) is an extrasolar planet approximately 300 light years away in the constellation of Cetus. It orbits the G-type giant star 81 Ceti at an average distance of 2.5 AU, taking about 2.6 years to revolve with 20.6% eccentricity.[2] This planet was discovered on July 3, 2008 by Sato et al., who used Doppler Spectroscopy and found the wobbling of the star caused by the planet’s gravity during its revolution.

See also

References

External links

Coordinates: 02h 37m 41.8003s, −03° 23′ 46.229″


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