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HD 75289 b is an extrasolar planet orbiting the star HD 75289 in Vela constellation. It has a minimum mass half that of Jupiter, and it orbits in a very short orbit completing one circular revolution around the star in three and a half days.[1] By studying the starlight scientists have concluded that the planet must have an albedo less than 0.12, rather low for a gas giant. Otherwise its reflected light would have been detected.

HD 75289 b
Discovery
Discovered byUdry et al.
Discovery dateFebruary 1, 1999
Detection method
Radial velocity
Orbital characteristics
Semi-major axis
0.0482 ± 0.0028 AU
Eccentricity0.034 ± 0.029
Orbital period (sidereal)
3.509267 ± 0.000064 d
Longitude of perihelion
141°
Time of perihelion
2,450,830.34 ± 0.48 JD
Semi-amplitude54.9 ± 1.8 m/s
Physical characteristics
Mass>0.467 ± 0.041 MJ

    This planet was discovered by the Geneva Extrasolar Planet Search team using Doppler spectroscopy.[2]


    References


    1. Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
    2. Udry, S.; et al. (2000). "The CORALIE survey for southern extra-solar planets II. The short-period planetary companions to HD 75289 and HD 130322". Astronomy and Astrophysics. 356 (2): 590–598. Bibcode:2000A&A...356..590U. Archived from the original on 2012-02-04. Retrieved 2008-06-08.



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    [de] HD 75289 b

    HD 75289 b ist ein Exoplanet, der den gelben Zwerg HD 75289 alle 3,509267 Tage umkreist. Auf Grund seiner hohen Masse wird angenommen, dass es sich um einen Gasplaneten handelt.
    - [en] HD 75289 b


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