Astronomy:HD 128311 c
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| Discovery | |
|---|---|
| Discovered by | Vogt et al. |
| Discovery site |  California , United States |
| Discovery date | June 24, 2005 |
| Doppler spectroscopy | |
| Orbital characteristics[1] | |
| astron|astron|helion}} | 2.02 AU (302,000,000 km) |
| astron|astron|helion}} | 1.46 AU (218,000,000 km) |
| 1.740 ± 0.010 AU (260,300,000 ± 1,500,000 km) | |
| Eccentricity | 0.159±0.006 |
| Orbital period | 921.538 ± 1.15 d (2.52303 ± 0.00315 a) |
| Average Orbital speed | 20.7 |
| Inclination | 55.950±14.553 |
| Longitude of ascending node | 229.392±14.473 |
| astron|astron|helion}} | 2449565.615±18.01 |
| 15.445±6.87 | |
| Semi-amplitude | 74.799±1.497 |
| Star | HD 128311 |
| Physical characteristics[1] | |
| Mass | 3.789+0.924 −0.432 Jupiter mass |
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 1.74 AU from its star (HD 128311). The planet has a minimum mass of 3.22 |♃|J}}}}}},[2] and astrometric observations in 2014 revealed its true mass to be 3.789 |♃|J}}}}}}.[1]
References
- ↑ 1.0 1.1 1.2 McArthur, Barbara E. (2014). "Astrometry, Radial Velocity, and Photometry: The HD 128311 System Remixed with Data from HST, HET, and APT". The Astrophysical Journal 795 (1): 41. doi:10.1088/0004-637X/795/1/41. Bibcode: 2014ApJ...795...41M.
- ↑ Vogt, Steven S. et al. (2005). "Five New Multicomponent Planetary Systems". The Astrophysical Journal 632 (1): 638–658. doi:10.1086/432901. Bibcode: 2005ApJ...632..638V. https://authors.library.caltech.edu/36250/1/0004-637X_632_1_638.pdf.
External links
- "Notes for planet HD 128311 c". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/hd_128311_c--266/. Retrieved 2008-08-18.
- "HD 128311". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+128311.
Coordinates: 
14h 36m 00.5607s, +09° 44′ 47.466″
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