TOI-813

Last updated
TOI-813
Observation data
Epoch J2000        Equinox J2000
Constellation Dorado [1]
Right ascension 04h 50m 46.57013s [2]
Declination −60° 54′ 19.6171″ [2]
Apparent magnitude  (V)10.322 [3]
Characteristics
Evolutionary stage Subgiant
Spectral type G0IV [3]
Astrometry
Radial velocity (Rv)1.24±0.30 [2] km/s
Proper motion (μ)RA: -3.605 mas/yr [2]
Dec.: -2.699 mas/yr [2]
Parallax (π)3.8031±0.0141  mas [2]
Distance 858 ± 3  ly
(262.9 ± 1.0  pc)
Details [3]
Mass 1.32±0.06  M☉
Radius 1.94±0.10  R☉
Surface gravity (log g)3.86±0.14  cgs
Temperature 5907±150  K
Metallicity [Fe/H]0.10±0.10  dex
Rotational velocity (v sin i)8.2±0.9 km/s
Age 3.73±0.62  Gyr
Other designations
CD−61 970, CPD−61 371, PPM 354364, TOI-813, TIC 55525572, TYC 8876-1059-1, 2MASS J04504658-6054196 [4]
Database references
SIMBAD data

TOI-813 (also known as TIC 55525572 [5] and 2MASS J04504658-6054196) is a bright subgiant G-type star [6] located 858 light-years (263 parsecs ) away from planet Earth. It is too faint to be seen with the naked eye. TOI-813 has a mass of 1.32 solar masses, a radius of 1.95 solar radii and a luminosity of 4.3 times the solar luminosity. [7]

Planetary system

The star has one known exoplanet orbiting it named TOI-813 b, a Neptune-like gas giant. [7]

The TOI-813 planetary system [3]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b —0.423+0.031
−0.037		83.8911+0.0027
−0.0031		089.64+0.24
−0.27 ° 		6.71±0.38  R🜨

References

  1. ↑ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
  2. 1 2 3 4 5 6 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.
  3. 1 2 3 4 Eisner, N. L.; Barragán, O.; et al. (May 2020). "Planet Hunters TESS I: TOI 813, a subgiant hosting a transiting Saturn-sized planet on an 84-day orbit". Monthly Notices of the Royal Astronomical Society . 494 (1): 750–763. arXiv: 1909.09094 . Bibcode:2020MNRAS.494..750E. doi: 10.1093/mnras/staa138 .
  4. ↑ "CD-61 970". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 1 November 2023.
  5. ↑ "TOI-813 | NASA Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Retrieved 2023-11-01.
  6. ↑ Anderson, Natali (2019-12-09). "TOI 813b: Saturn-Sized Exoplanet Found Orbiting Subgiant Star | Astronomy | Sci-News.com". Sci.News: Breaking Science News. Retrieved 2023-11-01.
  7. 1 2 "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. 31 January 2020. Retrieved 2023-11-01.
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