| 词条 | HD 128311 c |
| 释义 |
| name = HD 128311 c | discoverer = Vogt et al. | discovery_site = {{flagicon|USA}} California, United States | discovered = June 24, 2005 | discovery_method = Doppler spectroscopy | apsis = astron | aphelion = {{convert|2.06|AU|km|abbr=on}} | perihelion = {{convert|1.46|AU|km|abbr=on}} | semimajor = {{convert|1.76|±|0.11|AU|km|abbr=on}} | eccentricity = 0.170 ± 0.090 | period = 928 ± 18 d 2.54 y | avg_speed = 20.7 | time_periastron = 2,450,010 ± 400 | arg_peri = 200° ± 150 | semi-amplitude = 76.2 ± 4.6 | star = HD 128311 }}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. References}} External links
5 : Boötes|Exoplanets|Giant planets|Exoplanets discovered in 2005|Exoplanets detected by radial velocity |
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