GJ 273 b
Orbiting GJ 273
GJ 273 b is an exoplanet orbiting the star GJ 273, discovered in 2017 using the Radial Velocity method.
Minimum Mass (M sin i)
2.89
Earth masses
Orbital Period
18.6
days
Distance
5.9
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
2.89
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Astudillo-Defru et al. 2017
Orbital Period
18.650+0.006−0.005days
Semi-Major Axis
0.0911+0.0000−0.0000au
M sin(i) (Earth masses)
2.89+0.27−0.26
M sin(i) (Jupiter masses)
0.0091+0.0008−0.0008
Eccentricity
0.1000+0.0900−0.0700
Radial Velocity Semi-Amplitude
1.61+0.15−0.15m/s
Distance from Earth
5.9 pc (~19 ly)
Spectral Type
M3.5
Temperature
3382 K
Mass (Solar)
0.29 M☉
Radius (Solar)
0.29 R☉
Luminosity
-2.06 log L☉
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
111.8521°, 5.2258°
Discovery Method
Radial Velocity
Discovery Year
2017
Source ID: GJ 273 b
GJ 273 b orbits GJ 273 and was reported in 2017 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 2.89 Earth masses (M sin i) and an orbital period of 18.65 days.
Catalog data places the system at about 5.9 parsecs from Earth, a host star classified as M3.5, and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 273More planets in this system