HD 108874

HD_108874.html · captured from wingmakers.co.nz

This page makes checkable claims — observational astronomy, with names, magnitudes and distances that can be looked up.

Planetary System : HD108874
Yellow Main Sequence Star

System Components
(Mass in Multiples of Jupiter's Mass)

HD 108874 b
Water Cloud Jovian

Basic Data
Object Type: Water Cloud Jovian
Parent Star: HD 108874 (G5 V)
Discovery Status: Confirmed
Habitability: Planet at Earthlike Temperatures at Mean Orbital Distance

Physical Data
Mass ( M sin i ): 1.36 ± 0.13 Jupiters
Periastron Distance: 0.97 AU
Mean Distance: 1.051 ± 0.02 AU
Apastron Distance: 1.12 AU
Orbital Period: 395.4 ± 2.5 Days
Eccentricity: 0.07 ± 0.04
Argument of Perihelion (omega):
248.4 °
Radial Velocity of Star: 46 m/s

Inferred Properties
Planet Appearance:
White water ice clouds
Estimated Radius:
1.008 Jupiters 1
Estimated Periastron Temp: 271 Kelvin
Estimated Mean Temp: 262 Kelvin
Estimated Apastron Temp: 253 Kelvin
Temp from
Internal Heating :

114.333 Kelvins 2
Max Angular Star Size: 0.636°
Mean Angular Star Size: 0.587°
Min Angular Star Size: 0.55°
Gravitational Influence
(Hill Sphere): 0.079 AU / 11890000 km
Max Stable Prograde Moon Orbit: 0.028 AU / 4280000 km
Max Moon Mass: > 10 Earths 3

Discovery Facts
Year Discovered: 13 Jun 2002
Detection Method: Doppler Spectroscopy
Discovered By: Butler et al.

HD 108874 c
Water Cloud Jovian, Eccentric

Basic Data
Object Type: Water Cloud Jovian, Eccentric
Parent Star: HD 108874 (G5 V)
Discovery Status: Confirmed

Physical Data
Mass ( M sin i ): 1.018 ± 0.3 Jupiters
Periastron Distance: 2.01 AU
Mean Distance: 2.68 ± 0.25 AU
Apastron Distance: 3.35 AU
Orbital Period: 1605.8 ± 88 Days
Eccentricity: 0.25 ± 0.07
Argument of Perihelion (omega): 17.3 °

Inferred Properties
Planet Appearance:
White water ice clouds
Estimated Radius:
0.997 Jupiters 1
Estimated Periastron Temp: 189 Kelvin
Estimated Mean Temp: 164 Kelvin
Estimated Apastron Temp: 146 Kelvin
Temp from
Internal Heating :

103.949 Kelvins 2
Max Angular Star Size: 0.306°
Mean Angular Star Size: 0.23°
Min Angular Star Size: 0.184°
Gravitational Influence
(Hill Sphere): 0.184 AU / 27530000 km
Max Stable Prograde Moon Orbit: 0.066 AU / 9910000 km
Max Moon Mass: > 10 Earths 3,4

Tidally locked if older than: > 20 Gyr 5
Estimated Bond Albedo: ~ 0.79 6

Discovery Facts
Year Discovered: 2005
Detection Method: Doppler Spectroscopy
Discovered By: VOGT S., BUTLER P., MARCY G., FISCHER D., HENRY G.,
LAUGHLIN G., WRIGHT J. & JOHNSON A.

Habitability Zones For Planetary Bodies 108874 b/c

Planetary Orbits Around HD 108874

Position In Coma Berenices