HD 13189
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Triangulum |
| Right ascension | 02h 09m 40.1717s |
| Declination | +32º 18' 59.1690″ |
| Apparent magnitude (V) | +7.57 |
| Absolute magnitude (V) | +1.23 |
| Distance | 603 ly (185 pc) |
| Spectral type | K2 II |
| Other designations | |
HD 13189 is a 8th magnitude star in Triangulum constellation. It is an orange bright giant star located 603 light years away. The mass is 4.5 times the Sun, which indicated that it was a B-type star when it was a main-sequence star. The absolute magnitude is 1.
This star has a planetary companion or brown dwarf companion.
[edit] HD 13189 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 1.85 ± 0.35 AU |
| Eccentricity | (e) | 0.28 ± 0.06 |
| Orbital period | (P) | 471.6 ± 6 d |
| Angular distance | (θ) | 10 mas |
| Longitude of periastron |
(ω) | 160.7 ± 12° |
| Time of periastron | (T0) | 2452327.9 ± 20.2 JD |
| Semi-amplitude | (K) | 6.8 ± 1.5 m/s |
| Physical characteristics | ||
| Mass | (m) | >14 ± 6 MJ |
| Discovery information | ||
| Discovery date | 2005 | |
| Discoverer(s) | Hatzes et al. | |
| Detection method | Radial Velocity | |
| Discovery site | Texas, United States | |
| Discovery status | Published | |
HD 13189 b is an exoplanet or brown dwarf with mass ranges from 8 to 20 Jupiter mass. This object is located 277 Gm (1.85 AU) from the star, taking 472 days to make one elliptic round.
This object was discovered in Texas in 2005.
[edit] References
- Hatzes et al. (2005). "A giant planet around the massive giant star HD 13189". Astronomy & Astrophysics 437: 743-751.
- Kim et al. (2006). "[68.21 High-Resolution Spectroscopy of the Planetary Host HD 13189: Highly-Evolved and Metal-Poor]". AAS 37: 4.
[edit] External links
- Notes for star HD 13189. The Extrasolar Planets Encyclopaedia. Retrieved on December 21, 2007.
- Notes for planet HD 13189 b. The Extrasolar Planets Encyclopaedia. Retrieved on December 21, 2007.
- HD 13189 -- Red giant. Extrasolar Visions. Retrieved on December 21, 2007.
- HD 13189 B -- Brown dwarf. Extrasolar Visions. Retrieved on December 21, 2007.
- HD 13189 -- Star. SIMBAD. Retrieved on December 21, 2007.
- HD 13189 b -- Extra-solar Planet Candidate. SIMBAD. Retrieved on December 21, 2007.
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