| 词条 | HD 2638 b |
| 释义 |
| name = HD 2638 b | discoverer = Moutou, Mayor, Bouchy et al. | discovery_site = Geneva | discovered = 2005 | discovery_method = Radial velocity | apsis = astron | semimajor = {{convert|0.044|AU|km|abbr=on}} | eccentricity = 0 | period = 3.4442 ± 0.0002 d | time_periastron = 2,453,323.206 ± 0.002 | arg_peri = 0 | semi-amplitude = 67.4 ± 0.4 | star = HD 2638 | mass = >0.48 {{Jupiter mass|link=y}} }}HD 2638 b is a planet of the star HD 2638. It is a typical "hot Jupiter", a planet that orbits its parent star in a very tight "torch orbit". Distance to the star is less than 1/20th Earth's distance from the Sun. One orbital revolution lasts only about three and half days. References}} External links
6 : Exoplanets|Cetus (constellation)|Exoplanets discovered in 2005|Giant planets|Hot Jupiters|Exoplanets detected by radial velocity |
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