KELT-1

KELT-1
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 01m 26.9169s[1]
Declination 39° 23′ 01.7821″[1]
Apparent magnitude (V) 10.63
Characteristics
Evolutionary stage main-sequence star
Spectral type F[2]
Astrometry
Radial velocity (Rv)1.296[3] km/s
Proper motion (μ) RA: -9.696[3] mas/yr
Dec.: -7.823[3] mas/yr
Parallax (π)3.6836 ± 0.0144 mas[3]
Distance885 ± 3 ly
(271 ± 1 pc)
Position (relative to KELT-1)[2]
ComponentKELT-1B
Epoch of observation2012
Angular distance0.588±0.001″
Position angle157.4±0.2°
Projected separation154±8 AU
Details[2]
Mass1.324±0.026 M☉
Radius1.462+0.037
−0.024 R☉
Luminosity3.11±0.05[4] L☉
Surface gravity (log g)4.229+0.012
−0.019 cgs
Temperature6518±50 K
Metallicity [Fe/H]0.008±0.073 dex
Rotational velocity (v sin i)55 km/s
Age1.75±0.25 Gyr
Other designations
TOI-1476, TYC 2785-2130-1, GSC 02785-02130, 2MASS J00012691+3923017[1]
Database references
SIMBADdata

KELT-1 is a F-type main-sequence star. Its surface temperature is 6518±50 K. It is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.008±0.073, but is much younger at an age of 1.75±0.25 billion years. The star is rotating very rapidly.[2]

A red dwarf stellar companion at a projected separation of 154±8 AU was detected in 2012, simultaneously with a planetary companion.[2]

  1. ^ a b c "KELT-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-01-18.
  2. ^ a b c d e Cite error: The named reference Siverd2012 was invoked but never defined (see the help page).
  3. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  4. ^ Cite error: The named reference Johns2018 was invoked but never defined (see the help page).