TOI-813

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TOI-813
Observation data Epoch J2000 Equinox J2000
Constellation	Dorado^[1]
Right ascension	04^h 50^m 46.57013^s^[2]
Declination	−60° 54′ 19.6171″^[2]
Apparent magnitude (V)	10.322^[3]
Characteristics
Evolutionary stage	Subgiant
Spectral type	G0IV^[3]
Astrometry

Radial velocity (R_v)	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	0	89.64+0.24 −0.27°	6.71±0.38 $R$ _🜨

Bayer	α β γ δ ε ζ η¹ η² θ κ λ ν π¹ π² G
Variable	R (P) S WZ AB BB
HR	1859 2102
HD	27274 28254 30177 33579 37836 37974 38282 269810 271182
Other	B90 BAT99-7 BAT99-66 BAT99-68 BAT99-98 BAT99-104 BAT99-123 BI 253 Gliese 163 HE 0437-5439 HV 888 IRAS 05280–6910 LHA 120-S 79 LH 41-1042 LH 54-425 LMC195-1 MACHO 80.7443.1718 Melnick 34 Melnick 42 PSR J0523−7125 PSR J0537−6910 PSR J0540−6919 R85 R99 R136 a a1 a2 a3 b c R139 R145 SGR 0525−66 TOI-700 TOI-813 VFTS 102 VFTS 243 VFTS 352 VFTS 682 WASP-62 (Naledi) WOH G64

Exoplanets	Gliese 163 c HD 28254 b HD 30177 b TOI-700 d e TOI-813 b TOI-4127 b

NGC	1712 1712 1755 1761 1763 1783 1806 1818 1820 1846 1847 1850 1852 1854/1855 1856 1858 1859 1860 1866 1868 1869 1871 1872 1873 1898 1901 1903 1910 1929 1935 1955 1969 1971 1974 1978 1983 1984 1994 1997 2001 2002 2003 2004 2027 2040 2070 2074 2100 2108 2164 2197 2241 2257
Other	Hodge 301 LH 95

NGC	1934 1936 2014 2020 2029 2032 2060 2078 2080
Other	Henize 70 Honeycomb Nebula N119 N11 N41 N44 N49 N55 SNR 0509-67.5 Tarantula Nebula (30)

NGC	1533 1549 1553 1566 1672 1892 1947 2082
Other	Large Magellanic Cloud (partly in Mensa and Hydrus) LEDA 89996

Galaxy clusters	Dorado Group NGC 1566 Group

Astronomical events	GRB 790305b SN 1987A