HD 171028 b
Encyclopedia
HD 171028 b is a >1.83 MJ exoplanet orbiting very eccentrically around HD 171028
. The period
is 1.47 years and semi-major axis
of 1.29 AU
. The Geneva Extrasolar Planet Search
team announced the discovery of planet on July 13, 2007.
HD 171028
HD 171028 is a yellow main-sequence star in the constellation of Ophiuchus. The apparent magnitude is +8.31, visible in good binoculars. Unlike most planet-harboring stars, it does not have a Hipparcos number, though the distance was estimated at 90±7.8 parsecs. In the summer of 2007, a planet was...
. The period
Orbital period
The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...
is 1.47 years and semi-major axis
Semi-major axis
The major axis of an ellipse is its longest diameter, a line that runs through the centre and both foci, its ends being at the widest points of the shape...
of 1.29 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
. The Geneva Extrasolar Planet Search
Geneva Extrasolar Planet Search
The Geneva Extrasolar Planet Search is a variety of observational programs run by M. Mayor, D. Naef, F. Pepe, D. Queloz, N.C. Santos, and S. Udry. The program is located at the site of Sauverny in Versoix, a small town near Geneva, Switzerland...
team announced the discovery of planet on July 13, 2007.