KELT-2A

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KELT-2A
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 06h 10m 39s
Declination +30° 57′ 25″
Apparent magnitude (V) 8.77[1]
Characteristics
Spectral type F7V
Astrometry
Radial velocity (Rv) 47.5±0.2 km/s
Proper motion (μ) RA: 21.2±1.4 mas/yr
Dec.: -1.5±0.8 mas/yr
Distance 419 ± 15 ly
(128.6 ± 4.7 pc)
Details
Mass 1.314 (−0.060 +0.063) M
Radius 1.836 (−0.046 +0.066) R
Temperature 6148 ± 48 K
Metallicity 0.03 ± 0.78
Age 3.97 ± 0.01 billion years
Other designations
HD 42176A, WDS J06107+3057A, TYC 2420-899-1
Database references
SIMBAD data
Extrasolar Planets
Encyclopaedia
data

KELT-2A (HD 42176A) is a yellow white dwarf star located about 419 light-years away in the constellation Auriga. The apparent magnitude of this star is 8.77, which means it is not visible to the naked eye but can be seen with a binoculars.

KELT-2A is the brightest star in the common-proper-motion binary star system KELT-2 (HD 42176). KELT-2B is an early K dwarf approximately 295 AU away.

Planetary system[edit]

This star has one known planet, the extrasolar planet KELT-2Ab.[1]

The KELT-2A planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 1.524 ± 0.088 MJ 0.05504 ± 0.00086 4.1137913 ± 0.00001 0 1.290 ± 0.057 RJ

See also[edit]

References[edit]

External links[edit]

Coordinates: Sky map 06h 10m 39s, +30° 57′ 25″