HD 75289 b

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HD 75289 b
Discovery
Discovered by Udry et al.
Discovery date February 1, 1999
Radial velocity
Orbital characteristics
0.0482 ± 0.0028 AU
Eccentricity 0.034 ± 0.029
3.509267 ± 0.000064 d
141°
2,450,830.34 ± 0.48 JD
Semi-amplitude 54.9 ± 1.8 m/s
Physical characteristics
Mass >0.467 ± 0.041 MJ

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.

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

References[edit]

  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. 

External links[edit]

Coordinates: Sky map 08h 47m 40.3894s, −41° 44′ 12.452″