Astronomy:TOI-813
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[2] mas/yr Dec.: -2.699[2] mas/yr |
| Parallax (π) | 3.8031 ± 0.0141[2] mas |
| 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 | |
| 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]
| 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 |
0 | 89.64+0.24 −0.27° |
6.71±0.38 R⊕ |
References
- ↑ "Finding the constellation which contains given sky coordinates". 2 August 2008. http://djm.cc/constellation.html.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 3.3 Eisner, N. L. 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. doi:10.1093/mnras/staa138. Bibcode: 2020MNRAS.494..750E.
- ↑ "CD-61 970". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CD-61+970.
- ↑ "TOI-813 | NASA Exoplanet Archive". https://exoplanetarchive.ipac.caltech.edu/overview/TOI-813.
- ↑ Anderson, Natali (2019-12-09). "TOI 813b: Saturn-Sized Exoplanet Found Orbiting Subgiant Star | Astronomy | Sci-News.com" (in en-US). https://www.sci.news/astronomy/toi-813b-saturn-sized-exoplanet-found-subgiant-star-07885.html.
- ↑ 7.0 7.1 "Exoplanet-catalog" (in en). https://exoplanets.nasa.gov/exoplanet-catalog/7557/toi-813-b/.
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