14 Andromedae b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
 | ||
| Parent star | ||
| Star | 14 Andromedae | |
| Constellation | Andromeda | |
| Right ascension | (α) | 23h 31m 17.41s[1] |
| Declination | (δ) | +39° 14′ 10.3″[1] |
| Apparent magnitude | (mV) | 5.22 |
| Distance | 258 ± 6[1] ly (79 ± 2[1] pc) | |
| Spectral type | K0III | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.83 AU (124 Gm) |
| 11 mas | ||
| Periastron | (q) | 0.82 AU (123 Gm) |
| Apastron | (Q) | 0.84 AU (125 Gm) |
| Eccentricity | (e) | 0[2] |
| Orbital period | (P) | 185.84±0.23[2] d (0.50942 y) |
| Time of periastron | (T0) | 2861.4 ± 1.5 JD |
| Physical characteristics | ||
| Mass | (m) | 5.33 ± 0.57[2] MJ |
| Discovery information | ||
| Discovery date | July 3, 2008 | |
| Discoverer(s) | Sato et al.[3] | |
| Discovery method | Doppler Spectroscopy[3] | |
| Discovery status | Published[3] | |
| Other designations | ||
| HD 221345 b | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
14 Andromeda b or 14 And b is an extrasolar planet approximately 249 light years away in the constellation of Andromeda. The 186-day period planet orbits about 83% the Earth-Sun distance from the giant star 14 Andromedae. It has a minimum mass 4.8 times the mass of Jupiter. The planet orbits with an eccentricity of 0.0094, which means the orbital distance over the course of its revolution varies by only 0.02 AU. This planet was discovered on July 3, 2008 by Sato et al., who discovered the wobbling of 14 Andromedae caused by the planet’s gravity during its orbit with the Doppler spectroscopy.[3]
See also
References
- ↑ 1.0 1.1 1.2 1.3 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- ↑ 2.0 2.1 2.2 Ligi, R. et al. (2012). "A new interferometric study of four exoplanet host stars : θ Cygni, 14 Andromedae, υ Andromedae and 42 Draconis". Astronomy and Astrophysics 545. A5. arXiv:1208.3895. Bibcode:2012A&A...545A...5L. doi:10.1051/0004-6361/201219467.
- ↑ 3.0 3.1 3.2 3.3 Sato, Bun'ei et al. (2008). "Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042". Publications of the Astronomical Society of Japan 60 (6): 1317–1326. arXiv:0807.0268. Bibcode:2008PASJ...60.1317S. doi:10.1093/pasj/60.6.1317.
External links
- "14 Andromedae". Exoplanets. Retrieved 2008-08-06.
Coordinates: 
23h 31m 17.4139s, +39° 14′ 10.313″
- Jean Schneider (2011). "Notes for Planet 14 And b". Extrasolar Planets Encyclopaedia. Retrieved 30 September 2011.