HD 164604 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 164604 | |
| Constellation | Sagittarius | |
| Right ascension | (α) | 18h 03m 06.95s |
| Declination | (δ) | –28° 33′ 38.3″ |
| Apparent magnitude | (mV) | 9.7 |
| Distance | 123.9 ± 8.8 ly (38.0 ± 2.7 pc) | |
| Spectral type | K2V | |
| Mass | (m) | 0.80 M☉ |
| Metallicity | [Fe/H] | -0.18 |
| Orbital elements | ||
| Semi-major axis | (a) | 1.13 ± 0.05 AU (169 Gm) |
| Periastron | (q) | 0.85 AU (128 Gm) |
| Apastron | (Q) | 1.40 AU (210 Gm) |
| Eccentricity | (e) | 0.24 ± 0.14 |
| Orbital period | (P) | 606.4 ± 9.0 d (1.66 y) |
| Orbital speed | (υ) | 20.3 km/s |
| Argument of periastron |
(ω) | 51 ± 23° |
| Time of periastron | (T0) | 24552674 ± 80 JD |
| Semi-amplitude | (K) | 77 ± 32 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 2.7 ± 1.3 MJ |
| Discovery information | ||
| Discovery date | January 26, 2010 | |
| Discoverer(s) | Arriagada et al. | |
| Discovery method | Doppler spectroscopy | |
| Discovery site | Las Campanas Observatory | |
| Discovery status | Published | |
| Other designations | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 164604 b is an extrasolar planet discovered in January 2010 in association with the Magellan Planet Search Program. It has 2.7 times the mass of Jupiter and an orbital period of 606.4 days. Its star is classified as a K2 V dwarf and is roughly 124 light-years away from Earth.[1]
See also
References
- ↑ "HD 164604". http://exoplanet.eu/catalog/hd_164604_b/#7374. Retrieved 28 June 2013. External link in
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Further reading
- Arriagada; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal. 711 (2): 1229. Bibcode:2010ApJ...711.1229A. arXiv:1001.4093
. doi:10.1088/0004-637X/711/2/1229.
Coordinates: 
18h 03m 06.95s, −28° 33′ 38.3″
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