KNOWPIA
WELCOME TO KNOWPIA
CoRoT-4 
Summary
CoRoT-4 (formerly known as CoRoT-Exo-4[6]) is a yellow-white dwarf main-sequence star in the constellation Monoceros.[3]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 06h 48m 46.7134s[1] |
| Declination | −00° 40′ 21.9695″[1] |
| Apparent magnitude (V) | 13.45[2] |
| Characteristics | |
| Spectral type | F8V[2] |
| Apparent magnitude (R) | 13.42[3] |
| Apparent magnitude (J) | 12.619 ±0.026[3] |
| Apparent magnitude (H) | 12.359 ±0.029[3] |
| Apparent magnitude (K) | 12.29 ±0.03[3] |
| R−I color index | 13.531 [0.019][3] |
| Astrometry | |
| Proper motion (μ) | RA: −3.659±0.049[1] mas/yr Dec.: −3.898±0.044[1] mas/yr |
| Parallax (π) | 1.3484 ± 0.0280 mas[1] |
| Distance | 2,420 ± 50 ly (740 ± 20 pc) |
| Details | |
| Mass | 1.16+0.03 −0.02[4] M☉ |
| Radius | 1.17+0.01 −0.03[4] R☉ |
| Temperature | 6190 ± 60[4] K |
| Metallicity | [Fe/H] = 0 ± 0.15[2] |
| Rotation | 8.87 ± 1.12 d[5] |
| Rotational velocity (v sin i) | 6.4 ± 1.0[4] km/s |
| Age | 1+1.0 −0.3 Gyr[4] years |
| Other designations | |
| Database references | |
| SIMBAD | data |
Planetary system edit
The star is orbited by one known extrasolar planet, designated CoRoT-4b. It was catalogued as part of the CoRoT mission to find transiting planets, when a planet was spotted using the transit method.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.72 ± 0.08 MJ | 0.090 ± 0.001 | 9.20205 ± 0.00037 | 0 | — | — |
See also edit
References edit
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c Schneider, J. "Notes for star CoRoT-4". Extrasolar Planets Encyclopaedia. Archived from the original on August 19, 2009. Retrieved 2009-03-19.
- ^ a b c d e f "CoRoT-4". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-04-27.
- ^ a b c d e Montou, C.; et al. (2008). "Transiting exoplanets from the CoRoT space mission V. CoRoT-Exo-4b: Stellar and planetary parameters". Astronomy & Astrophysics Letters. 488 (2): L47–L50. arXiv:0807.3739. Bibcode:2008A&A...488L..47M. doi:10.1051/0004-6361:200810273. S2CID 118658022.
- ^ a b Aigrain, S.; et al. (2008). "Transiting exoplanets from the CoRoT space mission IV. CoRoT-Exo-4b: a transiting planet in a 9.2 day synchronous orbit". Astronomy & Astrophysics Letters. 488 (2): L43–L46. arXiv:0807.3767. Bibcode:2008A&A...488L..43A. doi:10.1051/0004-6361:200810246. S2CID 115916135.
- ^ Schneider, J. (2009-03-10). "Change in CoRoT planets names". Exoplanets (Mailing list). Archived from the original on 2010-01-18. Retrieved 2009-03-19.
External links edit
- "CoRot-4". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-04-28.