HD 183263
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Aquila |
| Right ascension | 19h 28m 24.5727s |
| Declination | +08º 21' 28.9948″ |
| Apparent magnitude (V) | 7.86 |
| Absolute magnitude (V) | 4.25 |
| Distance | 172 ly (52.8 pc) |
| Spectral type | G2IV |
| Other designations | |
HD 183263 is an 8th magnitude subgiant star in the constellation Aquila. This star is about to or already ran out of hydrogen fuel and eventually becomes a red giant and then dies as a white dwarf. It has absolute magnitude (apparent magnitude at 10 pc) of 4.25 compared to the Sun’s 4.83, which indicates the star is more luminous than our Sun, and therefore hotter by 103 K.
The star has a single planetary system.
[edit] HD 183263 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 1.52 AU |
| Eccentricity | (e) | 0.363±0.021 |
| Orbital period | (P) | 635.4±3.9 d |
| Angular distance | (θ) | 28.8 mas |
| Longitude of periastron |
(ω) | 231.5±5.7° |
| Time of periastron | (T0) | 2452103.0±7.5 JD |
| Semi-amplitude | (K) | 87.3±3.2 m/s |
| Physical characteristics | ||
| Mass | (m) | >3.82 MJ |
| Discovery information | ||
| Discovery date | 2004 | |
| Discoverer(s) | Marcy et al. | |
| Detection method | Doppler spectroscopy | |
| Discovery site | Hawaii, United States | |
| Discovery status | Published | |
HD 183263 b has the angular separation of 28.8 milliarcsecond from the parent star HD 183263 as viewed from Earth. Multiplying by the stellar distance will yield the real orbital separation of 1.52 astronomical units. Its category of planet by mass is Superjovian or Type I.
Geoffrey Marcy used doppler spectrometer in Hawaii to discovered a new planet in 2004 around this star.
[edit] References
- Marcy et al. (2005). "Five New Extrasolar Planets" ([dead link] – Scholar search). ApJ 619: 570. doi:.
[edit] External links
- HD 183263 -- Star. SIMBAD Astronomical Database. Retrieved on December 12, 2007.
- HD 183263b -- Extra-solar Planet Candidate. SIMBAD Astronomical Database. Retrieved on December 12, 2007.
- Notes for star HD 183263. The Extrasolar Planets Encyclopaedia. Retrieved on December 12, 2007.
- Notes for planet HD 183263 b. The Extrasolar Planets Encyclopaedia. Retrieved on December 12, 2007.
- HD 183263 -- Yellow Sub Giant. Extrasolar Visions. Retrieved on December 12, 2007.
- HD 183263 B -- Water Cloud Jovian, Eccentric. Extrasolar Visions. Retrieved on December 12, 2007.
- Star Table. Catalog of Nearby Exoplanets. Retrieved on December 12, 2007.
- Planet Table. Catalog of Nearby Exoplanet. Retrieved on December 12, 2007.
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