Pollux b

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Pollux b
Extrasolar planet List of extrasolar planets
Parent star
Star Pollux
Constellation Gemini
Right ascension (α) 07h 45m 19.4s
Declination (δ) +28° 01′ 35″
Apparent magnitude (mV) 1.15
Distance 33.7 ly
(10.34 pc)
Spectral type K0IIIb
Orbital elements
Semimajor axis (a) 1.64±0.27 AU
Eccentricity (e) 0.02±0.03
Orbital period (P) 589.64±0.81 d
(1.61432±0.00222 y)
Time of periastron (T0) 2,447,739.02±4.5 JD
Semi-amplitude (K) 41.0±1.6 m/s
Physical characteristics
Minimum mass (m sin i) 2.3±0.45 MJ
Stellar flux (F) 16
Discovery information
Discovery date 16 June 2006
Discoverer(s) Hatzes et al.
Discovery method Radial velocity
Discovery site  United States
Discovery status Published
Other designations
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data

Pollux b, also known as Beta Geminorum b (β Gem b / β Geminorum b) and HD 62509 b, is an extrasolar planet approximately 34 light-years away in the constellation of Gemini (the Twins). This planet was discovered orbiting the star Pollux in 2006 by astronomer Artie P. Hatzes, confirming his hypothesis originally published in 1993. The planet has a comparable mass to the gas giants in our solar system. It moves around Pollux in 1.61 years at a distance of 1.64 AU in a nearly circular orbit.

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Coordinates: Sky map 07h 45m 19.4s, +28° 01′ 35″