KELT-3
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Leo Minor[1] |
| Right ascension | 09h 54m 34.3869s[2] |
| Declination | +40° 23′ 16.974″[2] |
| Apparent magnitude (V) | 9.82 ± 0.03[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F5IV-V[4] |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: −28.217(20) mas/yr[2] Dec.: −24.068(22) mas/yr[2] |
| Parallax (π) | 4.7860±0.0272 mas[2] |
| Distance | 681 ± 4 ly (209 ± 1 pc) |
| Details[5] | |
| Mass | 1.301±0.046 M☉ |
| Radius | 1.583±0.036 R☉ |
| Luminosity | 3.04[6] L☉ |
| Surface gravity (log g) | 4.153±0.024 cgs |
| Temperature | 6306+36 −35 K |
| Metallicity [Fe/H] | 0.030+0.072 −0.066 dex |
| Age | 3.0 ± 0.2[6] Gyr |
| Other designations | |
| BD+41 2024, TYC 2996-683-1, 2MASS J09543439+4023170, GSC 02996-00683, SAO 43097 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
KELT-3 is a star in the zodiac constellation Leo Minor. With an apparent magnitude of 9.82, it is too faint to be seen with the naked eye, but can be detected using a telescope. It is currently located around 681 light years away, based on parallax measurements.
KELT-3 is a late F-type main-sequence star with 27.7% more mass than the Sun, and is slightly larger than the latter. It is radiating 3 times the Sun's luminosity, and has a metallicity similar to the latter. It has an effective temperature of 6,304 K, which gives KELT-3 a yellow-white hue. It's also slightly younger than the Sun, with an age of 3 billion years. There is uncertainty about the star's age, it being an evolved star or not.[6]
Since 2015, the star is suspected to have a stellar companion, at angular separation of 3.762±0.009 arcseconds.[7]
