KELT-10
Star in the constellation Telescopium / From Wikipedia, the free encyclopedia
KELT-10, also known as CD−47°12635, is a sun-like star in the southern constellation Telescopium. It has an apparent magnitude of 10.62,[2] making it readily visible in telescopes, but not to the naked eye. Parallax measurements from the Gaia spacecraft place the star at a distance of 617 light years;[1] it is currently receding with a radial velocity of 31.6 km/s.[4]
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Telescopium |
Right ascension | 18h 58m 11.6095s[1] |
Declination | −47° 00′ 11.6643″[1] |
Apparent magnitude (V) | +10.62[2] |
Characteristics | |
Spectral type | G0 V[3] |
B−V color index | +0.72[2] |
Variable type | PT |
Astrometry | |
Radial velocity (Rv) | 31.61±1.29[4] km/s |
Proper motion (μ) | RA: +1.464 mas/yr[1] Dec.: −15.600 mas/yr[1] |
Parallax (π) | 5.2834 ± 0.0174 mas[1] |
Distance | 617 ± 2 ly (189.3 ± 0.6 pc) |
Details[3] | |
Mass | 1.07+0.12 −0.15[5] M☉ |
Radius | 1.21+0.05 −0.03 R☉ |
Luminosity | 1.40±0.02[4] L☉ |
Surface gravity (log g) | 4.32+0.02 −0.03 cgs |
Temperature | 5,948±74 K |
Metallicity [Fe/H] | +0.1±0.1 dex |
Age | 4.5±0.7 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
KELT-10 has a stellar classification of G0 V,[3] indicating that it is a yellow dwarf like the Sun. However, the object is 7% more massive[5] and 21% larger.[3] It is also slightly hotter, with an effective temperature of 5,948 K[3] compared to the Sun's of 5,778 K. The star has a similar age, with an age of 4.5 billion years[3] and more luminous, having a luminosity 40% greater.[4] KELT-10's iron abundance is 123% that of the Sun,[3] consistent with a planetary host. However, this amount is poorly constrained.