GJ 436

GJ 436 Planetary System

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

Location
Constellation:  Leo
Right Ascension:  11 42 11.0941
Declination:  +26 42 23.652
Distance from Sol:  30 Light Years
Alternate Designations:  HIP 57087
 
Basic Data
Spectral Type:  M2.5 V
Apparent Magnitude:  10.68
Mass:  0.41 Solar Masses
Radius:  0.49 Solar Radii
Effective Temperature:  3470 Kelvin
Metallicity:  0.25 [Fe/H]
1.77 times Solar
 
 Habitability
 
Inner Edge of Habitability Zone:  0.08 AU
Outer Edge of Habitability Zone:  0.27 AU
Estimated Stellar Lifespan  145093 million years

GJ 436 b

Basic Data
Parent Star:  GJ 436 (M2.5 V)
Discovery Status:  Confirmed
Planet Type:  Hot Super Earth
 
Physical Data
 
Mass ( M sin i ):  0.067 Jupiters
Periastron Distance:  0.02 AU
Mean Distance:  0.027 AU
Apastron Distance:  0.03 AU
Orbital Period:  2.6441 Days
Eccentricity:  0.12
Argument of Perihelion (omega):  332°
 
 Inferred Properites
Average Angular Size of Star:  9.653°
Planet Appearance:
 Blue and cloudless
Periastron Temp:  681 Kelvin
Mean Temp:  639 Kelvin
Apastron Temp:  604 Kelvin
 
 Discovery Facts
Year Discovered:  2004
Detection Method:  Doppler Spectroscopy
Discovered By:  BUTLER P., VOGT S., MARCY G., FISCHER D.,
WRIGHT J., HENRY G., LAUGHLIN G. & LISSAUER J.

Planetary Orbit of GJ 436 b

Position In Leo

Planetary Neighbor

HD 97633 Planetary System