HD 8673
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Andromeda |
| Right ascension | 01h 26m 08.7849s |
| Declination | +34º 34' 46.9207″ |
| Apparent magnitude (V) | +6.31 |
| Absolute magnitude (V) | +3.40 |
| Distance | 124.8 ly (38.25 pc) |
| Spectral type | F7V |
| Other designations | |
HD 8673 is a yellow-white dwarf star in Andromeda constellation. It has an apparent magnitude and absolute magnitude of 6.31 and 3.40 respectively. The distance from the Solar System is 124.8 light years or 38.25 parsecs.
In its orbit, there is debate about the celestial object as to whether be an exoplanet or a brown dwarf.
[edit] HD 8673 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 1.58 AU |
| Eccentricity | (e) | ? |
| Orbital period | (P) | 639 d |
| Angular distance | (θ) | 41.3 mas |
| Longitude of periastron |
(ω) | ?° |
| Time of periastron | (T0) | ? JD |
| Semi-amplitude | (K) | 13.1 ± 2.0 m/s |
| Physical characteristics | ||
| Mass | (m) | >14 ± 4 MJ |
| Discovery information | ||
| Discovery date | 2005 | |
| Discoverer(s) | Hatzes et al. | |
| Detection method | Radial Velocity | |
| Discovery site | Texas, United States | |
| Discovery status | Unconfirmed | |
HD 8673 b is an unconfirmed celestial object orbiting around HD 8673. The possible mass ranges from 10 to 18 Jupiter mass. This 639-day object orbits at 236 Gm (1.58 AU away from its parent star HD 8673.
This planet or brown dwarf was discovered in Texas in 2005 by Hatzes, who was the discoverer of Epsilon Eridani b.
[edit] References
- Hatzes et al. (2005). "The first extrasolar planets from the TOPS program: a superplanet around a massive evolved star and an F7 star.". Geophysical Resource Abstract 7.
[edit] External links
- Notes for star HD 8673. The Extrasolar Planets Encyclopaedia. Retrieved on December 21, 2007.
- Notes for planet HD 8673 b. The Extrasolar Planets Encyclopaedia. Retrieved on December 21, 2007.
- HD 8673 -- Yellow Main Sequence Star. Extrasolar Visions. Retrieved on December 21, 2007.
- HD 8673 B -- Brown dwarf. Extrasolar Visions. Retrieved on December 21, 2007.
- NLTT 4767 -- High Proper-motion Star. SIMBAD. Retrieved on December 21, 2007.
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