CoRoT-7

CoRoT-7
Observation data
Epoch J2000      Equinox J2000
Constellation Monoceros[1]
Right ascension 06h 43m 49.4688s[2]
Declination −01° 03′ 46.817″[2]
Apparent magnitude (V) 11.668[1]
Characteristics
CoRoT-7A
Spectral type G9V[1]
CoRoT-7B
Spectral type M4V[3]
Astrometry
Radial velocity (Rv)+31.174 ± 0.0086[1] km/s
Proper motion (μ) RA: 10.984[2] mas/yr
Dec.: -0.040[2] mas/yr
Parallax (π)6.2676 ± 0.0139 mas[2]
Distance520 ± 1 ly
(159.6 ± 0.4 pc)
Absolute magnitude (MV)5.78[1]
Position (relative to CoRoT-7A)[3]
ComponentCoRoT-7B
Epoch of observation2021
Angular distance75.7″
Projected separation12160 AU
Details
CoRoT-7A
Mass0.91 ± 0.03[1] M☉
Radius0.82 ± 0.04[1] R☉
Surface gravity (log g)4.47 ± 0.10[1] cgs
Temperature5250 ± 60[1] K
Metallicity[M/H] = 0.12 ± 0.06[1]
Rotation~23 days[4]
Rotational velocity (v sin i)<3.5[1] km/s
Age(1.2–2.3) × 109[1] years
CoRoT-7B
Mass0.23[3] M☉
Other designations
2MASS J06434947-0103468, TYC 4799-1733-1, GSC 04799-01733
CoRoT-7A: Gaia EDR3 3107267177757848576
CoRoT-7B: Gaia EDR3 3107267212116737792
Database references
SIMBADdata
Exoplanet Archivedata

CoRoT-7 (TYC 4799-1733-1) is a binary star system made up of a late G-type star[1] and a M-dwarf star that was discovered in 2021.[3] The primary star has three exoplanets,[5] including CoRoT-7b, an super-Earth exoplanet that is remarkable due to its extremely high temperature (around 2000 °C) and very short orbital period, around 20 hours.[6][7] It was the first exoplanet shown to be rocky.[7][8] The system has the name CoRoT-7 after the CoRoT space telescope, which discovered the exoplanets around the star CoRoT-7A.[8] The stellar system is 520 light-years from the Earth.[5]

  1. ^ a b c d e f g h i j k l m Cite error: The named reference leger2009 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  3. ^ a b c d Fontanive, Clémence; Daniella Bardalez Gagliuffi (2021), "The Census of Exoplanets in Visual Binaries: population trends from a volume-limited Gaia DR2 and literature search", Frontiers in Astronomy and Space Sciences, 8: 16, arXiv:2101.12667, Bibcode:2021FrASS...8...16F, doi:10.3389/fspas.2021.625250
  4. ^ Queloz, D.; Bouchy, F.; Moutou, C.; Hatzes, A.; Hebrard, G.; et al. (2009). "The CoRoT-7 planetary system: two orbiting Super-Earths" (PDF). Astronomy and Astrophysics. 506 (1): 303. Bibcode:2009A&A...506..303Q. doi:10.1051/0004-6361/200913096. Also available from exoplanet.eu Archived 2012-01-11 at the Wayback Machine
  5. ^ a b "CoRoT-7 Overview". NASA Exoplanet Archive. Retrieved February 18, 2024.
  6. ^ "COROT discovers smallest exoplanet yet, with a surface to walk on". www.esa.int. Retrieved 2024-02-18.
  7. ^ a b Gregersen, Erik. "CoRoT-7b". Britannica. Retrieved 2024-02-18.
  8. ^ a b "First Solid Evidence for a Rocky Exoplanet - Mass and density of smallest exoplanet finally measured". ESO. September 16, 2009. Retrieved February 18, 2024.