Kappa Andromedae b
Astronomical object orbiting Kappa Andromedae / From Wikipedia, the free encyclopedia
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Kappa Andromedae b[4] is a directly imaged substellar object and likely superjovian-mass planet orbiting Kappa Andromedae, a young B9IV star in the Andromeda constellation, about 170 light-years away.[5] The companion's mass is roughly 13 times the mass of Jupiter.[2] As early history on Kappa And b is filled with debate over whether it is an exoplanet or a brown dwarf, some scientists have broadly described it as a "super-Jupiter" object.
Quick Facts Orbital characteristics, Semi-major axis ...
Orbital characteristics | |
---|---|
57–133[1]AU | |
Eccentricity | 0.69–0.85[1] |
242–900[1] y | |
Inclination | 114.9–140[1] |
60.3–90.5[1] | |
2038.4–2047.9[1] | |
96.6–155.4[1] | |
Star | Kappa Andromedae |
Physical characteristics | |
Mean radius | 1.57 RJ |
Mass | 13+12 −2[2] MJ |
Temperature | 1,700–2,000 K[2][3] |
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