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Kepler-42
 Artist's impression of the Kepler-42 (KOI-961) system Credit: NASA | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 28m 52.5689s[1] |
| Declination | 44° 37′ 08.990″[1] |
| Apparent magnitude (V) | 16.12[2] |
| Characteristics | |
| Spectral type | M5V[3] |
| Astrometry | |
| Radial velocity (Rv) | −84.48±0.2[3] km/s |
| Proper motion (μ) | RA: 93.074(24) mas/yr[1] Dec.: −417.393(25) mas/yr[1] |
| Parallax (π) | 24.9338 ± 0.0204 mas[1] |
| Distance | 130.8 ± 0.1 ly (40.11 ± 0.03 pc) |
| Details | |
| Mass | 0.144+0.007 −0.006[4] M☉ |
| Radius | 0.175±0.006[4] R☉ |
| Luminosity | 3.08±0.28x10−3.0[4] L☉ |
| Temperature | 3269±19[4] K |
| Metallicity [Fe/H] | −0.48±0.17[3] dex |
| Rotational velocity (v sin i) | 2.9±0.4[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-42, formerly known as KOI-961, is a red dwarf located in the constellation Cygnus and approximately 131 light years from the Sun. It has three known extrasolar planets, all of which are smaller than Earth in radius and orbit very close to the star.[5]
- ^ a b c d Cite error: The named reference
Gaia DR3was invoked but never defined (see the help page). - ^ Cite error: The named reference
Exoplanet.euwas invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Muirheadwas invoked but never defined (see the help page). - ^ a b c d Mann, Andrew W.; Dupuy, Trent; Muirhead, Philip S.; Johnson, Marshall C.; Liu, Michael C.; Ansdell, Megan; Dalba, Paul A.; Swift, Jonathan J.; Hadden, Sam (2017), "THE GOLD STANDARD: ACCURATE STELLAR AND PLANETARY PARAMETERS FOR EIGHT Kepler M DWARF SYSTEMS ENABLED BY PARALLAXES", The Astronomical Journal, 153 (6): 267, arXiv:1705.01545, Bibcode:2017AJ....153..267M, doi:10.3847/1538-3881/aa7140, S2CID 119325474
- ^ Cite error: The named reference
Keplerwas invoked but never defined (see the help page).
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