HD 221287 b
Orbiting HD 221287
HD 221287 b is an exoplanet orbiting the star HD 221287, discovered in 2007 using the Radial Velocity method.
Minimum Mass (M sin i)
982.05
Earth masses
Orbital Period
456.1
days
Distance
55.9
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
982.05
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Naef et al. 2007
Orbital Period
456.100+7.700−5.800days
Semi-Major Axis
1.2500+0.0400−0.0400au
M sin(i) (Earth masses)
982.05+251.08−251.08
M sin(i) (Jupiter masses)
3.0900+0.7900−0.7900
Eccentricity
0.0800+0.1700−0.0500
Epoch of Periastron
2453263.00+99.00−52.00days
Argument of Periastron
98.0+92.0−51.0deg
Radial Velocity Semi-Amplitude
71.00+18.00−8.00m/s
Distance from Earth
55.9 pc (~182 ly)
Spectral Type
Unknown
Temperature
6304 K
Mass (Solar)
1.25 M☉
Radius (Solar)
Unknown
Luminosity
0.22 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
352.8362°, -58.2098°
Discovery Method
Radial Velocity
Discovery Year
2007
Source ID: HD 221287 b
HD 221287 b orbits HD 221287 and was reported in 2007 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 982.05 Earth masses (M sin i) and an orbital period of 456.1 days.
Catalog data places the system at about 55.9 parsecs from Earth and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 221287