HD 102888 b
Orbiting HD 102888
HD 102888 b is an exoplanet orbiting the star HD 102888, discovered in 2025 using the Radial Velocity method.
Minimum Mass (M sin i)
1808.44
Earth masses
Orbital Period
252.1
days
Distance
126.5
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
1808.44
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Fontanet et al. 2025
Orbital Period
252.060+0.240−0.240days
Semi-Major Axis
1.0500+0.0010−0.0010au
M sin(i) (Earth masses)
1808.44+47.67−47.67
M sin(i) (Jupiter masses)
5.6900+0.1500−0.1500
Eccentricity
0.1100+0.0300−0.0300
Argument of Periastron
241.2+13.3−13.6deg
Radial Velocity Semi-Amplitude
102.30+2.79−2.80m/s
Distance from Earth
126.5 pc (~413 ly)
Spectral Type
G8 III
Temperature
4990 K
Mass (Solar)
2.42 M☉
Radius (Solar)
8.60 R☉
Luminosity
1.62 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
177.6545°, -27.2779°
Discovery Method
Radial Velocity
Discovery Year
2025
Source ID: HD 102888 b
HD 102888 b orbits HD 102888 and was reported in 2025 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 1,808.44 Earth masses (M sin i) and an orbital period of 252.06 days.
Catalog data places the system at about 126.5 parsecs from Earth, a host star classified as G8 III, 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 102888