| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 74156 | |
| Constellation | Hydra | |
| Right ascension | (α) | 08h 42m 25.122s[1] |
| Declination | (δ) | +04° 34′ 41.15″[1] |
| Apparent magnitude | (mV) | 7.62 |
| Distance | 210 ± 7[1] ly (64 ± 2[1] pc) | |
| Spectral type | G1V[2] | |
| Mass | (m) | 1.24[2] M☉ |
| Radius | (r) | 1.64 ± 0.19[2] R☉ |
| Temperature | (T) | 5960 ± 100[2] K |
| Metallicity | [Fe/H] | 0.13[2] |
| Age | 3.7 ± 0.4[2] Gyr | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.29169 ± 0.00001[2] AU |
| Eccentricity | (e) | 0.63 ± 0.01[2] |
| Orbital period | (P) | 51.638 ± 0.004[2] d |
| Argument of periastron |
(ω) | 174 ± 2[2]° |
| Time of periastron | (T0) | 2,450,793.3 ± 0.2[2] JD |
| Semi-amplitude | (K) | 108 ± 4[2] m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.78 ± 0.04[2] MJ |
| Discovery information | ||
| Discovery date | Apr 4, 2001[3] | |
| Discoverer(s) | Naef, Mayor et al.[4] | |
| Discovery method | Radial velocity | |
| Discovery site | California | |
| Discovery status | Published[4] | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
HD 74156 b is an extrasolar planet at least 1.88 times the mass of Jupiter that orbits the star HD 74156. It is most likely a gas giant. This planet was discovered in April 2001 by Dominique Naef and Michel Mayor along with the second planet HD 74156 c.[3][4]
References[]
- ↑ 1.0 1.1 1.2 1.3 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664.Vizier catalog entry
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 (2011). The Lick-Carnegie Survey: Four New Exoplanet Candidates. The Astrophysical Journal 727 (2).
- ↑ 3.0 3.1 "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 27, 2012.
- ↑ 4.0 4.1 4.2 (2004). The ELODIE survey for northern extra-solar planets III. Three planetary candidates detected with ELODIE. Astronomy and Astrophysics 414 (1): 351–359.
External links[]
Coordinates: Sky map 08h 42m 25.1222s, +04° 34′ 41.151″
| File:Iota-draconis-b.jpg | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |
