Astronomy:HD 147513 b

Short description: Exoplanet in the constellation Scorpius

HD 147513 b

Discovery
Discovered by	Mayor et al.
Discovery site	France
Discovery date	June 19, 2002
Detection method	Radial velocity
Orbital characteristics
astron|astron|helion}}	1.66 AU (248,000,000 km)
astron|astron|helion}}	0.98 AU (147,000,000 km)
Semi-major axis	1.32 AU (197,000,000 km)
Eccentricity	0.26 ± 0.05
Orbital period	528.4 ± 6.3 d 1.4467 y
astron|astron|helion}}	2,451,123 ± 20
astron|astron|helion}}	282 ± 9
Semi-amplitude	29.3 ± 1.8
Star	HD 147513

HD 147513 b is an exoplanet approximately 42 light-years away in the constellation of Scorpius. It is at least 21% more massive than Jupiter. But unlike Jupiter, it orbits the star much closer, mean distance being only a third more than Earth's distance from the Sun. Its orbit is also eccentric; at periastron, it is closer to its star than Earth is from the Sun, whereas at apastron, it is further from its star than Mars to the Sun, finding itself on the outer edge of the habitable zone.