TOI-1260

TOI-1260 is a single high-proper-motion K-type main-sequence star in the constellation of Ursa Major. Its surface temperature is 4227±85 K. TOI-1260 has an orange hue and is too faint to be seen with the naked eye, or a small telescope.^[5] It has an apparent visual magnitude of 11.922±0.034. Based upon parallax measurements, it is located 239 light-years from the Sun. The object is drifting towards the Sun with a radial velocity of -16.7 km/s.^[1]

TOI-1260

Observation data Epoch RA2000      Equinox RA2000
Constellation	Ursa Major
Right ascension	10h 28m 35.025s[1]
Declination	+65° 51′ 16.38″[1]
Apparent magnitude (V)	11.875[2]
Characteristics
Evolutionary stage	Main sequence
Spectral type	K6 V[2]
Astrometry
Radial velocity (Rv)	−16.70±0.40[1] km/s
Proper motion (μ)	RA: −177.340 mas/yr[1] Dec.: −81.693 mas/yr[1]
Parallax (π)	13.6226±0.0147 mas[1]
Distance	239.4 ± 0.3 ly (73.41 ± 0.08 pc)
Details[3]
Mass	0.679+0.095 −0.057 M☉
Radius	0.672±0.010 R☉
Luminosity	0.129±0.004 L☉
Surface gravity (log g)	4.57±0.05 cgs
Temperature	4227±85 K
Metallicity [Fe/H]	−0.10±0.07 dex
Rotation	30.63±3.81 d
Rotational velocity (v sin i)	1.5±0.7 km/s
Age	6.7+5.1 −5.2 Gyr
Other designations
LP 62-217, NLTT 24401, TOI-1260, TIC 355867695, 2MASS J10283500+6551163[4]
Database references
SIMBAD	data
Exoplanet Archive	data

Planetary system

TOI-1260 has three known planets, two discovered in 2021^[2] and one in 2022 by the transit method.^[6]

None of these three planets orbit in the habitable zone. All are sub-Neptunes, with masses and radii indicating that they are partly composed of gas.^[3]

The TOI-1260 planetary system^[3]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	8.56±1.54 M🜨	0.0367±0.0011	3.127463±0.000005	0	89.03±0.61°	2.41±0.05 R🜨
c	13.20±4.23 M🜨	0.0657±0.0020	7.493134±0.000020	0	87.97±0.11°	2.76±0.07 R🜨
d	11.84±7.79 M🜨	0.1116±0.0033	16.608164±0.000083	0	89.14±0.10°	3.12±0.08 R🜨

See also

• List of exoplanets discovered in 2022