HD 196050
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Pavo |
| Right ascension | 20h 37m 51.7102s |
| Declination | −60º 38' 04.1346″ |
| Apparent magnitude (V) | 7.6 |
| Absolute magnitude (V) | 4.2 |
| Distance | 153.05 ly (46.93 pc) |
| Spectral type | G3V |
| Other designations | |
HD 196050 is a star located in the constellation Pavo at a distance of 153 light years or 47 parsecs or 1.45 exameters away from the Solar System. This star has the apparent magnitude of 7.6 and the absolute magnitude is 4.2. It is a yellow main-sequence star of spectral type G3. The mass & radius are larger than the Sun by 10-20%. The age of the star is younger and intermediate in metallicity. The star is also called by the Hipparcos number 101806.
[edit] HD 196050 b
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Discovery
|
|
|---|---|
| Discovered by | Jones et al. |
| Discovery site | Australia |
| Discovery date | 2002 |
| Detection method | Doppler Spectroscopy |
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Designations
|
|
| Alternative names | HIP 101806 b SAO 254837 b |
| Semi-major axis | 2.54 AU |
| Eccentricity | 0.228±0.038 |
| Orbital period | 1378±21 d |
| Average orbital speed | 20.1 km/s |
| Angular distance | 54.12 mas |
| Longitude of periastron | 187±12° |
| Time of periastron | 2450843±56JD |
| Semi-amplitude | 49.7±2 m/s |
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Physical characteristics
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| Mass | >2.90 MJ |
HD 196050 b is a 1378-day extrasolar planet with a minimum mass of 2.90 Jupiter mass or 5.51 wekagrams. The average orbital distance is 2.54 astronomical units or 380 gigameters or 12.3 microparsecs. The eccentricity of the orbit is 22.8%. The periastron (closest) distance is 1.96 AU and the apastron (farthest) distance is 3.12 AU. The average orbital velocity is 20.1 km/s and the semi-amplitude is 49.7 m/s. The longitude of periastron is 187° and the time of periastron is 2,450,843 JD.
The planet is typically discovered by using Doppler spectrometer by looking for shifts in the spectrum of the star. In Australia, Jones et al. found this planet in 2002 by using the telescope in Anglo-Australian Observatory.
[edit] References
- Jones et al. (2002). "Extrasolar planets around HD 196050, HD 216437 and HD 160691". Monthly Notice of the Royal Astronomical Society 337 (4): 1170-1178.
- Greenhill et al. (2002). "epsilon Eridani, upsilon Andromedae, 51 Pegasi, HD 209458, HD 196050". IAU Circ..
- Mugrauer et al. (2005). "Four new wide binaries among exoplanet host stars". Astronomy and Astrophysics 440 (3): 1051-1060.
[edit] External links
- Notes for star HD 196050. The Extrasolar Planets Encyclopaedia. Retrieved on December 16, 2007.
- Notes for planet HD 196050. The Extrasolar Planets Encyclopaedia. Retrieved on December 16, 2007.
- HD 196050 – Yellow Main Sequence Star. Extrasolar Visions. Retrieved on December 16, 2007.
- HD 196050 B – Water Cloud Jovian, Eccentric. Extrasolar Visions. Retrieved on December 16, 2007.
- HD 196050 -- Star. SIMBAD. Retrieved on December 16, 2007.
- HD 196050 b -- Extra-solar Planet Candidate. SIMBAD. Retrieved on December 16, 2007.
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