Kepler-9

Kepler-9

An artist's impression of Kepler-9, including planets Kepler-9b and c
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra[1]
Right ascension 19h 2m 17.7544s[2]
Declination +38° 24′ 03.177″[2]
Apparent magnitude (V) 13.9[3]
Astrometry
Proper motion (μ) RA: 2.472(13) mas/yr[2]
Dec.: −14.691(15) mas/yr[2]
Parallax (π)1.5823 ± 0.0120 mas[2]
Distance2,060 ± 20 ly
(632 ± 5 pc)
Characteristics
Spectral type G2V
Details[4]
Mass1.022+0.029
−0.039 M☉
Radius0.958±0.020 R☉
Surface gravity (log g)4.49+0.02
−0.03 cgs
Temperature5774±60 K
Metallicity [Fe/H]+0.05±0.07 dex
Rotation16.746±0.077 days[5]
Rotational velocity (v sin i)2.74±0.40[6] km/s
Age2.0+2.0
−1.3 Gyr
Other designations
KOI-377, KIC 3323887, 2MASS J19021775+3824032[7]
Database references
SIMBADdata
KICdata

Kepler-9 is a sunlike star in the constellation Lyra. Its planetary system, discovered by the Kepler Mission in 2010 was the first detected with the transit method found to contain multiple planets.

  1. ^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference EPE was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Borsato2019 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference McQuillan2013 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Wang2018 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).