HD 212771 b
Exoplanet | List of exoplanets | |
---|---|---|
Parent star | ||
Star | HD 212771 | |
Constellation | Aquarius | |
Right ascension | (α) | 22h 27m 03s |
Declination | (δ) | −17° 15′ 49″ |
Apparent magnitude | (mV) | 7.6 |
Distance | 427 ± 46 ly (131 ± 14 pc) | |
Spectral type | G8IV | |
Mass | (m) | 1.15 ± 0.08 M☉ |
Radius | (r) | 5 ± 0.1 R☉ |
Temperature | (T) | 5121 ± 44 K |
Metallicity | [Fe/H] | -0.21 ± 0.03 |
Age | 6 ± 2 Gyr | |
Orbital elements | ||
Semi-major axis | (a) | 1.22 ± 0.3 AU |
Eccentricity | (e) | 0.111 ± 0.06 |
Orbital period | (P) | 373.3 ± 3.4 d |
Physical characteristics | ||
Minimum mass | (m sin i) | 2.3 ± .4 MJ |
Discovery information | ||
Discovery date | 2010-03-17 | |
Discoverer(s) | Howard et al. | |
Discovery method | Doppler spectroscopy | |
Discovery status | ||
Database references | ||
Extrasolar Planets Encyclopaedia | data | |
SIMBAD | data | |
Exoplanet Archive | data | |
Open Exoplanet Catalogue | data |
HD 212771 b is an extrasolar planet orbiting the G-type star HD 212771 approximately 427 light years away in the constellation Aquarius.[1]
See also
References
- ↑ Johnson, John Asher; et al. (2010). "Retired A Stars and Their Companions IV. Seven Jovian Exoplanets from Keck Observatory". Publications of the Astronomical Society of the Pacific 122 (892): 701–711. arXiv:1003.3445 [astro-ph.EP]. Bibcode:2010PASP..122..701J. doi:10.1086/653809.
External links
- "HD 212771 b". The Extrasolar Planets Encyclopaedia.
Coordinates: 22h 27m 03s, −17° 15′ 49″
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