HD 147513 b

HD 147513 b

Exoplanet		List of exoplanets
Parent star
Star		HD 147513
Constellation		Scorpius
Right ascension	(α)	16^h 24^m 01.2899^s
Declination	(δ)	–39° 11′ 34.729″
Distance		41.96 ly (12.87 pc)
Spectral type		G5V
Orbital elements
Semi-major axis	(a)	1.32 AU
Periastron	(q)	0.98 AU
Apastron	(Q)	1.66 AU
Eccentricity	(e)	0.26 ± 0.05
Orbital period	(P)	528.4 ± 6.3 d (1.4467 y)
Argument of periastron	(ω)	282 ± 9°
Time of periastron	(T0)	2,451,123 ± 20 JD
Semi-amplitude	(K)	29.3 ± 1.8 m/s
Physical characteristics
Minimum mass	(m sin i)	>1.21 MJ
Discovery information
Discovery date		June 19, 2002
Discoverer(s)		Mayor et al.
Discovery method		Radial velocity
Discovery site		France
Discovery status		Published

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 itse 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.^[1][2]

References

1. "HD 147513 b". The Extrasolar Planets Encyclopaedia.
2. Mayor, M.; et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics 415 (1): 391–402. arXiv:astro-ph/0310316. Bibcode:2004A&A...415..391M. doi:10.1051/0004-6361:20034250.

Coordinates: 16^h 24^m 01.2899^s, −39° 11′ 34.729″