HD 129445 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 129445 | |
| Constellation | Circinus | |
| Right ascension | (α) | 14h 46m 03.064s[1] |
| Declination | (δ) | –68° 45′ 45.89″[1] |
| Apparent magnitude | (mV) | 8.8 |
| Distance | 210 ± 20[1] ly (66 ± 5[1] pc) | |
| Spectral type | G8V | |
| Mass | (m) | 0.99 M☉ |
| Metallicity | [Fe/H] | 0.25 |
| Orbital elements | ||
| Semi-major axis | (a) | 2.9 ± 0.2 AU (440 Gm) |
| 43 mas | ||
| Periastron | (q) | 0.9 AU (130 Gm) |
| Apastron | (Q) | 5.0 AU (750 Gm) |
| Eccentricity | (e) | 0.70 ± 0.10 |
| Orbital period | (P) | 1840 ± 55 d (5.04 y) |
| Orbital speed | (υ) | 17 km/s |
| Argument of periastron |
(ω) | 163 ± 15° |
| Time of periastron | (T0) | 24553093 ± 50 JD |
| Semi-amplitude | (K) | 38 ± 6 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.6 ± 0.6 MJ |
| Discovery information | ||
| Discovery date | January 26, 2010 | |
| Discoverer(s) | Arriagada et al.[2] | |
| Discovery method | Doppler spectroscopy | |
| Discovery site | Las Campanas Observatory | |
| Discovery status | Published[2] | |
| Other designations | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
This planet is an eccentric Jupiter gas giant discovered by the Magellan Planet Search Program in 2010.[2]
References
- 1 2 3 4 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
- 1 2 3 Arriagada, Pamela; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal 711 (2): 1229–35. arXiv:1001.4093. Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229.
Coordinates: 
14h 46m 03.06s, −68° 45′ 45.9″
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