K2-33b

K2-33b
Artist's impression of the K2-33 system (orbit and star sizes to scale) compared to the planets of the inner Solar System, with their respective orbits outlined.
Discovery[1][2]
Discovered byK2 (Kepler) mission
Discovery date21 June 2016
Transit
Orbital characteristics
0.0409 +0.0021
−0.0023
[1] AU
Eccentricity0.0[2]
5.424865+0.000035
−0.000031
[2] d
Inclination89.1 +0.6
−1.1
[2]
StarK2-33
Physical characteristics
5.04 +0.34
−0.37
[2] R🜨
Mass<3.6 MJ[1]
Temperature850 K (577 °C; 1,070 °F)[1]

K2-33b (also known by its EPIC designation EPIC 205117205.01) is a very young super-Neptune exoplanet, orbiting the pre-main-sequence star K2-33. It was discovered by NASA's Kepler space telescope on its "Second Light" mission. It is located about 453 light-years (139 parsecs) away from Earth in the constellation of Scorpius. The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured.

K2-33b is among the youngest known exoplanets, at 9.3 million years old.

  1. ^ a b c d Cite error: The named reference David2016 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Mann2016 was invoked but never defined (see the help page).