stars
exoplanets
news
Exoplanet K2-9 b
Exoplanet K2-9 b orbits star K2-9 that lies 271 light years away from the Sun.
It has about 250px of Earth radius and orbits its star much closer than Earth orbits Sun.
Sun distance
271 light years
271 light years
Loading may take a moment.
K2-9 b
Exoplanet, sub-neptune
Star: K2-9
Distance from the star: 0.091 AU
Orbit around star: 18.4498 days
+
Orbital period
Orbital period of exoplanet K2-9 b around its star is 18.4498 days.
The orbital period of an exoplanet is the time it takes to complete one full orbit around its star, usually measured in days. Most of the exoplanets discovered so far have orbital periods of less than one year...
More about Orbital period in StellarGuide
Basic characteristic
Size: 2.253 R Earth | 0.2 R Jupiter
Temperature: 314 K | 40.85 °C
Year of discovery: 2015 (transit)
Other designations of this exoplanet
EPIC 201465501 b, 2MASS J11450348+0000190 b, WISE J114503.35+000019.3 b
EPIC 201465501 b, 2MASS J11450348+0000190 b, WISE J114503.35+000019.3 b
Advertisement
Comparison
When comparing to the Solar system planets, K2-9 b orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Size | 5.88 | 2.37 | 2.25 | 4.25 | 0.2 | 0.25 | 0.56 | 0.59 |
|
Distance | 0.23 | 0.13 | 0.09 | 0.06 | 0.02 | 0.01 | 0 | 0 |
|
Temperature | 0.71 | 0.43 | 1.09 | 1.51 | 1.93 | 2.36 | 4.03 | 4.36 |