94 Ceti
From Wikipedia, the free encyclopedia
| Observation data Equinox J2000.0 |
|
|---|---|
| Constellation | 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 a |
| Semimajor axis (a) | 151 AU" |
| Eccentricity (e) | 0.26 |
| Inclination (i) | 114.10° |
| Node (Ω) | ° |
| Periastron epoch (T) | |
| Details | |
| Mass | 1.35 M☉ |
| Radius | 1.76 R☉ |
| Luminosity | ? L☉ |
| Temperature | 6160 K |
| Metallicity | 1.69 × Solar |
| Rotation | 8.5 km/s (~10.5 days) |
| Age | 3000 million years |
| Other designations | |
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.
Contents |
[edit] 94 Ceti Ab
| Extrasolar planet | Lists of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 1.428±0.083 AU |
| Eccentricity | (e) | 0.30±0.04 |
| Orbital period | (P) | 535.7±3.1 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 41±8° |
| Time of periastron | (τ) | 2,450,944±12 JD |
| Physical characteristics | ||
| Mass | (m) | >1.69±0.26 MJ |
| Radius | (r) | ? RJ |
| Density | (ρ) | ? kg/m3 |
| Temperature | (T) | ? K |
| Discovery information | ||
| Discovery date | August 7, 2000 | |
| Discoverer(s) | Mayor et al. | |
| Detection method | Doppler Spectroscopy | |
| Discovery status | Published | |
94 Ceti b is an extrasolar planet orbiting its star once every 1.2 years. It was discovered on August 7, 2000 by a team lead by Michel Mayor.
[edit] See also
[edit] References
- Mayor et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics 415: 391-402.
[edit] External links
- SIMBAD: HD 19994 -- High proper-motion Star
- Extrasolar Planets Encyclopaedia: HD 19994 + HD 19994 b
- SolStation: 94 Ceti 2 + orbits
- Extrasolar Visions: 94 Ceti + 94 Ceti b
- 94 Ceti by Professor Jim Kaler.
 |
This main sequence star-related article is a stub. You can help Wikipedia by expanding it. |
 |
This extrasolar planet related article is a stub. You can help Wikipedia by expanding it. |
