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, 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]
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.
In 2015, a " hot Jupiter" orbiting the star was discovered by the KELT-South telescope. KELT-10b orbits at a distance 10 time closer than Mercury orbits the Sun, and is bloated due to its orbit.
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 0.68±0.04 MJ | 0.052±0.001 | 4.1662739±0.0000063 | 0 (assumed) | 88.61+0.86 −0.74 ° |
1.4±0.1 RJ |
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, 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]
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.
In 2015, a " hot Jupiter" orbiting the star was discovered by the KELT-South telescope. KELT-10b orbits at a distance 10 time closer than Mercury orbits the Sun, and is bloated due to its orbit.
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 0.68±0.04 MJ | 0.052±0.001 | 4.1662739±0.0000063 | 0 (assumed) | 88.61+0.86 −0.74 ° |
1.4±0.1 RJ |