Kepler-43, formerly known as KOI-135, is a star in the northern constellation of Cygnus. It is located at the celestial coordinates: Right Ascension 19h 00m 57.8034s, Declination +46° 40′ 05.665″.[7] With an apparent visual magnitude of 13.996,[3] this star is too faint to be seen with the naked eye. The Kepler-43 has a very strong starspot activity.[5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 00m 57.8034s[2] |
| Declination | +46° 40′ 05.666″[2] |
| Apparent magnitude (V) | 13.96[3] |
| Characteristics | |
| Spectral type | G0V~G0IV[4] |
| Astrometry | |
| Proper motion (μ) | RA: −2.982(14) mas/yr[2] Dec.: 0.126(14) mas/yr[2] |
| Parallax (π) | 0.9846 ± 0.0116 mas[2] |
| Distance | 3,310 ± 40 ly (1,020 ± 10 pc) |
| Details | |
| Mass | 1.32±0.09[3] M☉ |
| Radius | 1.42±0.07[3] R☉ |
| Luminosity | [3] L☉ |
| Surface gravity (log g) | 4.26±0.05[5] cgs |
| Temperature | 6041±123[3] K |
| Metallicity [Fe/H] | 0.33±0.11[3] dex |
| Rotation | 12.851±0.053 days[6] |
| Rotational velocity (v sin i) | 5.5±1.5[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Planetary system
editThe Kepler spacecraft detected a transiting planet candidate around this star that was confirmed by radial velocity measurements taken by the SOPHIE spectrograph mounted on the 1.93 m telescope at the Haute-Provence Observatory.[8]
The planet nightside temperature was measured to be 2043+79
−352 K.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 3.23±0.19 MJ | 0.0449 | 3.0240949±0.0000006 | — | — | — |
References
edit- ^ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e f g h Kepler-43b, NASA Ames Research Center, archived from the original on 2015-09-14, retrieved 2011-12-06
- ^ a b Schneider, Jean, "Star: Kepler-43", Extrasolar Planets Encyclopaedia, archived from the original on 2014-03-04, retrieved 2011-12-06
- ^ a b c d Esteves, Lisa J.; Mooij, Ernst J. W. De; Jayawardhana, Ray (2014), "Changing Phases of Alien Worlds: Probing Atmospheres Ofkeplerplanets with High-Precision Photometry", The Astrophysical Journal, 804 (2): 150, arXiv:1407.2245, Bibcode:2015ApJ...804..150E, doi:10.1088/0004-637X/804/2/150, S2CID 117798959
- ^ McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). "Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators". The Astrophysical Journal Letters. 775 (1). L11. arXiv:1308.1845. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11. S2CID 118557681.
- ^ "Kepler Discoveries". 2011-12-05. Archived from the original on 2010-05-27.
- ^ Bonomo, A. S.; et al. (2012). "SOPHIE velocimetry of Kepler transit candidates. V. The three hot Jupiters KOI-135b, KOI-204b, and KOI-203b (alias Kepler-17b)". Astronomy and Astrophysics. 538. A96. arXiv:1110.5462. Bibcode:2012A&A...538A..96B. doi:10.1051/0004-6361/201118323. S2CID 118528032.