2MASS J19383260+4603591 b
Orbiting 2MASS J19383260+4603591
2MASS J19383260+4603591 b is an exoplanet orbiting the star 2MASS J19383260+4603591, discovered in 2015 using the Eclipse Timing Variations method.
Minimum Mass (M sin i)
591.16
Earth masses
Orbital Period
406.0
days
Distance
396.3
parsecs
What these measurements mean
These comparisons use the reported catalog values. They are interpretations and calculations, not additional observations.
- A year on this world
- One orbit lasts about 1.11 Earth years. This comparison uses the reported orbital period. It does not measure the planet's rotation or the length of its day.
- What the mass can tell you
- M sin i is a lower bound on the true mass because the viewing angle affects the radial-velocity measurement. Do not treat it as an exact mass or use it to claim a measured density.
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
591.16
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Esmer et al. 2022
Orbital Period
406.000+4.000−4.000days
M sin(i) (Earth masses)
591.16+15.89−15.89
M sin(i) (Jupiter masses)
1.8600+0.0500−0.0500
Eccentricity
0.3300+0.0500−0.0500
Epoch of Periastron
2455131.00+11.00−11.00days(BJD-TDB)
Argument of Periastron
302.0+8.0−8.0deg
Distance from Earth
396.3 pc (~1293 ly)
Spectral Type
Unknown
Temperature
29564 K
Mass (Solar)
0.48 M☉
Radius (Solar)
0.20 R☉
Luminosity
Unknown
Planets in System
3
Stars in System
2
Coordinates (RA, Dec)
294.6359°, 46.0664°
Discovery Method
Eclipse Timing Variations
Discovery Year
2015
Source ID: 2MASS J19383260+4603591 b
2MASS J19383260+4603591 b orbits 2MASS J19383260+4603591 and was reported in 2015 and was detected with the Eclipse Timing Variations method.
Published measurements list a minimum mass of 591.16 Earth masses (M sin i) and an orbital period of 406 days.
Catalog data places the system at about 396.3 parsecs from Earth 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 2MASS J19383260+4603591More planets in this system