Kepler-90i

Coordinates: Sky map 18h 57m 44.04s, +49° 18′ 18.6″
Source: Wikipedia, the free encyclopedia.

Kepler-90i
machine learning algorithms.[1]
Orbital characteristics
0.107+0.025
−0.040[1] AU
14.44912±0.00020[2] d
Inclination89.20 +0.59
−1.30[2]
StarKepler-90
Physical characteristics
Mean radius
1.32±0.21[2] R🜨
Temperature709 K (436 °C; 817 °F)[2]

Kepler-90i (also known by its Kepler Object of Interest designation KOI-351.08)

machine learning algorithms.[1][4][5]

Characteristics

Mass, radius and temperature

Kepler-90i is a super-Earth exoplanet with a radius of 1.32 R🜨,[2] indicating that it is small enough to be rocky. With an Earth-like composition, Kepler-90i would have a mass of about 2.3 ME, since its volume is times that of Earth's. It has an equilibrium temperature of 709 K (436 °C; 817 °F), similar to the average temperature of Venus.

Host star

Main article: Kepler-90

The planet orbits Kepler-90, a G-type main sequence star. The star has a mass of 1.2 M☉ and a radius 1.2 R☉. It has a surface temperatures of 6080 K and has an estimated age of around 2 billion years, with considerable uncertainty. In comparison, the Sun is about 4.6 billion years old[6] and has a surface temperature of 5778 K.[7]

The star's apparent magnitude, or how bright it appears from Earth's perspective, is 14. It is too dim to be seen with the naked eye.

Orbital characteristics

Kepler-90i orbits its host star about every 14.45 days with a semi-major axis of 0.107 AU.

Due to its very close distance to its host star, it is likely to be tidally locked, meaning that one side permanently faces the star in eternal daylight and the other side permanently faces away from the star in eternal darkness.

Discovery

In 2009,

machine learning algorithms.[1][4]

Artist's impression of the planets of the Kepler-90 exoplanetary system compared to the eight planets of the Solar System.

See also

References

  1. ^ a b c d e f g Shallue, Christopher J.; Vanderburg, Andrew (16 December 2017). "Identifying Exoplanets With Deep Learning: A Five Planet Resonant Chain Around Kepler-80 And An Eighth Planet Around Kepler-90" (PDF). Retrieved 14 December 2017.
  2. ^ a b c d e f g h i "Kepler-90 i". NASA Exoplanet Archive. Retrieved 14 December 2017.
  3. ^ St. Fleur, Nicholas (14 December 2017). "An 8th Planet Is Found Orbiting a Distant Star, With A.I.'s Help". The New York Times. Retrieved 15 December 2017.
  4. ^ a b Chou, Felecia; Hawkes, Alison; Northon, Karen (14 December 2017). "Release 17-098 – Artificial Intelligence, NASA Data Used to Discover Eighth Planet Circling Distant Star". NASA. Retrieved 14 December 2017.
  5. ^ Chou, Felicia; Hawkes, Alison; Landau, Elizabeth (14 December 2017). "Artificial Intelligence, NASA Data Used to Discover Eighth Planet Circling Distant Star". NASA. Retrieved 15 December 2017.
  6. ^ Cain, Fraser (16 September 2008). "How Old is the Sun?". Universe Today. Retrieved 14 December 2017.
  7. ^ Cain, Fraser (15 September 2008). "Temperature of the Sun". Universe Today. Retrieved 14 December 2017.


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