HD 128311 c
Exoplanet | List of exoplanets | |
---|---|---|
Parent star | ||
Star | HD 128311 | |
Constellation | Boötes | |
Right ascension | (α) | 14h 36m 00.5607s |
Declination | (δ) | +09° 44′ 47.466″ |
Distance | 54.14 ly (18.04 pc) | |
Spectral type | K0V | |
Mass | (m) | 0.8 M☉ |
Radius | (r) | 0.73 R☉ |
Temperature | (T) | 4965 K |
Metallicity | [Fe/H] | 0.03 |
Age | 0.39 Gyr | |
Orbital elements | ||
Semi-major axis | (a) | 1.76 ± 0.11 AU |
Periastron | (q) | 1.46 AU |
Apastron | (Q) | 2.06 AU |
Eccentricity | (e) | 0.170 ± 0.090 |
Orbital period | (P) | 928 ± 18 d (2.54 y) |
Orbital speed | (υ) | 20.7 km/s |
Argument of periastron |
(ω) | 200° ± 150° |
Time of periastron | (T0) | 2,450,010 ± 400 JD |
Semi-amplitude | (K) | 76.2 ± 4.6 m/s |
Physical characteristics | ||
Minimum mass | (m sin i) | 3.22 ± 0.49 MJ (1020 ± 160 M⊕) |
Discovery information | ||
Discovery date | June 24, 2005 | |
Discoverer(s) | Vogt et al. | |
Discovery method | Doppler spectroscopy | |
Discovery site | California, United States | |
Discovery status | Published | |
Database references | ||
Extrasolar Planets Encyclopaedia | data | |
SIMBAD | data | |
Exoplanet Archive | data | |
Open Exoplanet Catalogue | data |
HD 128311 c is an exoplanet located approximately 54 light-years away in the constellation of Boötes. This planet orbits in an eccentric orbit at 1.76 AU from its star (HD 128311). The planet has minimum mass 3.22 Jupiter masses.[1]
References
- ↑ Vogt, Steven S.; et al. (2005). "Five New Multicomponent Planetary Systems". The Astrophysical Journal. 632 (1): 638–658. Bibcode:2005ApJ...632..638V. doi:10.1086/432901.
External links
- "Notes for planet HD 128311 c". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-18.
- "HD 128311". Exoplanets. Retrieved 2008-08-18.
Coordinates: 14h 36m 00.5607s, +09° 44′ 47.466″
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