Kepler-4

Kepler-4
Observation data
Epoch J2000      Equinox J2000
Constellation Draco[1]
Right ascension 19h 2m 27.6980s[2]
Declination +50° 8′ 08.704″[2]
Apparent magnitude (V) 12.7[3]
Characteristics
Spectral type G0[4]
Astrometry
Proper motion (μ) RA: 6.127(12) mas/yr[2]
Dec.: 4.642(13) mas/yr[2]
Parallax (π)2.0055 ± 0.0103 mas[2]
Distance1,626 ± 8 ly
(499 ± 3 pc)
Details
Mass1.117+0.021
−0.029[5] M☉
Radius1.555±0.012[5] R☉
Luminosity2.505+0.142
−0.124[5] L☉
Surface gravity (log g)4.102+0.005
−0.004[5] cgs
Temperature5781±76[6] K
Metallicity [Fe/H]0.09±0.10[6] dex
Age6.71+0.77
−0.67[5] Gyr
Other designations
KOI-7, KIC 11853905, GSC 03549-02067, 2MASS J19022767+5008087[7]
Database references
SIMBADdata
KICdata

Kepler-4 is a sunlike star located about 1626 light-years away in the constellation Draco. It is in the field of view of the Kepler Mission, a NASA operation purposed with finding Earth-like planets. Kepler-4b, a Neptune-sized planet that orbits extremely close to its star, was discovered in its orbit and made public by the Kepler team on January 4, 2010. Kepler-4b was the first discovery by the Kepler satellite, and its confirmation helped to demonstrate the spacecraft's effectiveness.

  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 Borucki2010 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Silva Aguirre2015 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Huber2013 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).