Kepler-10

Kepler-10

An artist's depiction of the Kepler-10 system. Kepler-10c is in the foreground.
Observation data
Epoch J2000      Equinox J2000
Constellation Draco
Right ascension 19h 02m 43.06139s[1]
Declination +50° 14′ 28.7016″[1]
Apparent magnitude (V) 11.157[2]
Characteristics
Spectral type G2V[3]
Astrometry
Radial velocity (Rv)−98.44±0.24[1] km/s
Proper motion (μ) RA: −18.483 mas/yr[1]
Dec.: 41.382 mas/yr[1]
Parallax (π)5.3698 ± 0.0103 mas[1]
Distance607 ± 1 ly
(186.2 ± 0.4 pc)
Details
Mass0.910±0.021[2] M☉
Radius1.065±0.009[2] R☉
Temperature5708±28[2] K
Metallicity [Fe/H]−0.15±0.04[4] dex
Age10.6+1.5
−1.3[2] Gyr
Other designations
KOI-72, KIC 11904151, GSC 03549-00354, 2MASS J19024305+5014286[3]
Database references
SIMBADdata
KICdata

Kepler-10, formerly known as KOI-72, is a Sun-like star in the constellation of Draco that lies 607 light-years (186 parsecs) from Earth.[5][6] Kepler-10 was targeted by NASA's Kepler space telescope, as it was seen as the first star identified by the Kepler mission that could be a possible host to a small, transiting exoplanet.[7] The star is slightly less massive, slightly larger, and slightly cooler than the Sun; at an estimated 11.9 billion years in age, Kepler-10 is 2.3 times the age of the Sun.[2]

Kepler-10 is host to a planetary system made up of at least three planets. Kepler-10b, the first undeniably rocky planet,[7] was discovered in its orbit after eight months of observation and announced on January 10, 2011. The planet orbits its star closely, completing an orbit every 0.8 days,[8] and has a density similar to that of iron.[7] The second planet, Kepler-10c, was confirmed on May 23, 2011, based on follow-up observations by the Spitzer Space Telescope. The data shows it has an orbital period of 42.3 days and has a radius more than double that of Earth, but it was initially thought to have a higher density, making it the largest and most massive rocky planet discovered as of June 2014.[2][9][10] However, refined mass measurements have shown it to be a more typical volatile-rich planet.[11] A third planet, Kepler-10d, was discovered in 2023 by radial velocity observations.[4]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference harps was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Bonomo2023 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference epe was invoked but never defined (see the help page).
  6. ^ "Kepler-10 Stellar Family Portrait". NASA. Retrieved 22 February 2023.
  7. ^ a b c Cite error: The named reference announcement was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference NASA was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Fressin2011 was invoked but never defined (see the help page).
  10. ^ Clavin, Whitney (June 2, 2014). "Astronomers Confounded By Massive Rocky World". NASA. Retrieved June 3, 2014.
  11. ^ Cite error: The named reference Rajpaul was invoked but never defined (see the help page).