94 Ceti

From Wikipedia, the free encyclopedia

94 Ceti A / B
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Cetus
Right ascension 03h 12m 46.4365s
Declination -01° 11′ 45.964″
Apparent magnitude (V) +5.07
Characteristics
Spectral type F8V / M3V
U-B color index 0.11 / ?
B-V color index 0.56 / ?
Variable type None
Astrometry
Radial velocity (Rv) +18.3 km/s
Proper motion (μ) RA: 193.43 mas/yr
Dec.: -69.23 mas/yr
Parallax (π) 44.69 ± .75 mas
Distance 73 ± 1 ly
(22.4 ± 0.4 pc)
Absolute magnitude (MV) 3.32
Visual binary orbit
Companion 94 Ceti B
Period (P) 1,470 yr
Semimajor axis (a) 151 AU"
Eccentricity (e) 0.26
Inclination (i) 114.10°
Details
Mass 1.35 M☉
Radius 1.76 R☉
Luminosity 3.98 L☉
Temperature 6160 K
Metallicity 1.69 × Solar
Rotation 8.5 km/s (~10.5 days)
Age 3000 million years
Planet
Companion
b
Mass (MJ)
>1.69
Orbital period (days)
535.7
Semimajor axis (AU)
1.428
Eccentricity
0.30
Other designations
GJ 128, HR 962, BD -01°457, HD 19994, LTT 1515, SAO 130355, FK5 116, ADS 2406, HIP 14954.

94 Ceti (also known as HD 19994) is a binary star system approximately 73 light-years away in the constellation Cetus.

94 Ceti A is a yellow-white dwarf star with about 1.3 times the mass of the Sun while 94 Ceti B is a red dwarf star. According to the new Sixth Catalog of Orbits of Visual Binaries, Stars A and B have an average separation of 151 AU.

On August 7, 2000, the extrasolar planet 94 Ceti b was discovered orbiting the star.

[edit] See also

[edit] References

[edit] External links

 This binary or multiple star system–related article is a stub. You can help Wikipedia by expanding it.