GJ 9827 b
Orbiting GJ 9827
GJ 9827 b is an exoplanet orbiting the star GJ 9827, discovered in 2017 using the Transit method. It is a Earth-sized world.
Radius
1.44
Earth radii
Mass
4.28
Earth masses
Orbital Period
1.2
days
Distance
29.7
parsecs
Equilibrium Temp
1035
K
Radius (Earth radii)
1.44
Mass (Earth masses)
4.28
Measured
Equilibrium Temperature
1035 K
Parameter source: Passegger et al. 2024
Orbital Period
1.209+0.000−0.000days
Semi-Major Axis
0.0189+0.0004−0.0004au
Planet Mass (Earth masses)
4.28+0.35−0.33
Planet Mass (Jupiter masses)
0.0135+0.0011−0.0010
Epoch of Periastron
2457738.83+0.00−0.00days(BJD)
Radial Velocity Semi-Amplitude
3.53+0.22−0.22m/s
Distance from Earth
29.7 pc (~97 ly)
Spectral Type
K7 V
Temperature
4236 K
Mass (Solar)
0.62 M☉
Radius (Solar)
0.58 R☉
Luminosity
Unknown
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
351.7718°, -1.2853°
Discovery Method
Transit
Discovery Year
2017
Source ID: GJ 9827 b
GJ 9827 b orbits GJ 9827 and was reported in 2017 and was detected with the Transit method.
Published measurements list a radius of 1.44 Earth radii, a mass of 4.28 Earth masses, an orbital period of 1.21 days, and an equilibrium temperature near 1,035 K.
Catalog data places the system at about 29.7 parsecs from Earth, a host star classified as K7 V, and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 9827