en HD 2638 b

HD 2638 b
Discovery
Discovered by	Moutou, Mayor,; Bouchy et al.
Discovery site	Geneva
Discovery date	2005
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.044 AU (6,600,000 km)
Eccentricity	0
Orbital period (sidereal)	3.4442 ± 0.0002 d
Time of periastron	2,453,323.206; ± 0.002
Argument of periastron	0
Semi-amplitude	67.4 ± 0.4
Star	HD 2638
Physical characteristics
Mass	>0.48 MJ

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". The distance to the star is less than 1/20 Earth's distance from the Sun. One orbital revolution lasts only about three and half days.^[1]

References

^ Moutou, C.; et al. (2015). "The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454". Astronomy and Astrophysics. 439 (1): 367–373. arXiv:1411.7048. Bibcode:2005A&A...439..367M. doi:10.1051/0004-6361:20052826.

External links

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[Moutou2005-1] Moutou, C.; et al. (2015). "The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454". Astronomy and Astrophysics. 439 (1): 367–373. arXiv:1411.7048. Bibcode:2005A&A...439..367M. doi:10.1051/0004-6361:20052826.

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