HD 6434 [SEP] constellation
HD 6434
HD 6434 is an 8th magnitude star in the constellation of Phoenix. It is a very Sun-like yellow dwarf star, but much older, being 12.2 billion years old. Yellow dwarfs are not very luminous, so at a distance of 138 light years it is not visible to the unaided eye. With binoculars it is readily visible under ideal observing conditions.
In 2000, a planet was observed orbiting it while the peer reviewed scientific paper was published four years later.
See also.
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HD 6434 b
HD 6434 b is an extrasolar planet orbiting the star HD 6434. It has a minimum mass about half that of Jupiter. It orbits the star very close, over 2.5 times as close as Mercury orbits the Sun. For this reason it completes one orbit in only 22 days. Unlike true "hot Jupiters" like 51 Pegasi b, HD 6434 b does not have a circular orbit, but rather an eccentric one.
By studying observations taken by the Hipparcos astrometric mission, a group