HD 23079 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 23079 | |
| Constellation | Reticulum | |
| Right ascension | (α) | 03h 39m 43.0952s |
| Declination | (δ) | −52° 54′ 57.017″ |
| Apparent magnitude | (mV) | 7.1 |
| Distance | 113.5 ly (34.8 pc) | |
| Spectral type | F8/G0V | |
| Orbital elements | ||
| Semi-major axis | (a) | 1.60 ± 0.12 AU (239 Gm) |
| Periastron | (q) | 1.44 AU (215 Gm) |
| Apastron | (Q) | 1.76 AU (263 Gm) |
| Eccentricity | (e) | 0.102 ± 0.031 |
| Orbital period | (P) | 730.6 ± 5.7 d (2.000 y) |
| Argument of periastron |
(ω) | 55 ± 17° |
| Time of periastron | (T0) | 2,450,492 ± 37 JD |
| Semi-amplitude | (K) | 54.9 ± 1.1 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 2.45 ± 0.16 MJ |
| Discovery information | ||
| Discovery date | October 2001 | |
| Discoverer(s) | Tinney et al. | |
| Discovery method | doppler spectroscopy | |
| Discovery site |  Anglo-Australian Observatory | |
| Discovery status | Published | |
HD 23079 b is an exoplanet approximately 114 light years away in the constellation Reticulum. The planet has mass of at least 2.45 Jupiters, although only the minimum mass is known since inclination is unknown. The planet takes almost exactly two years to orbit the star at the average distance of 1.6 AU. The planet's orbital eccentricity is about the same as 109 Piscium b, HD 75898 b, and HD 69830 b at 0.102. The distance range from as close as 1.44 AU to as far away as 1.76 AU from the parent star.
The planet was discovered in 2001 by Tinney et al., who used doppler spectrometer to look for shifts of star’s spectrum caused by a gravity of the planet tug the star around as the planet orbits.
References
- Tinney, C. G.; et al. (2002). "Two Extrasolar Planets from the Anglo-Australian Planet Search". The Astrophysical Journal. 571 (1): 528–531. arXiv:astro-ph/0111255
. Bibcode:2002ApJ...571..528T. doi:10.1086/339916. - Dvorak, R.; Pilat-Lohinger, E.; Schwarz, R.; Freistetter, F. (2004). "Extrasolar Trojan planets close to habitable zones". Astronomy & Astrophysics. 426 (2): L37. arXiv:astro-ph/0408079. Bibcode:2004A&A...426L..37D. doi:10.1051/0004-6361:200400075.
External links
- "Notes for planet HD 23079 b". The Extrasolar Planets Encyclopaedia.
Coordinates: 
03h 39m 43.0952s, −52° 54′ 57.017″
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