TIC 139270665

Planetary system · 619.3 light-years away · also TYC 2474-907-1

TIC 139270665 is 619 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G2 star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

TIC 139270665 b goes round its star every 23.6 days, 4 times as often as Mercury goes round the Sun.

The star

Spectral typeG2
Surface temperature5,844 K
Mass1.035 solar masses
Radius1.016 solar radii
Luminosity1.077 times the Sun
Apparent magnitude10.385
Ageabout 3.4 billion years
Distance from the Sun619.3 light-years (189.9 parsecs)
Position (J2000)RA 124.0339°, Dec 33.2915°
ConstellationLynx

Planets (2)

PlanetYearOrbitRadiusMassFound
TIC 139270665 b23.6 days0.163 AU7.2298 R⊕147.15 M⊕Transit, 2024
TIC 139270665 c2.8 years2.000 AU12.9 R⊕ estimated1554.2 M⊕ minimumRadial Velocity, 2024

Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.

The planets, compared

For a star of 5,844 K, 1.1 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.98 to 1.73 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 619 years ago, around 1410.

Nearest systems to it

Also found by Transiting Exoplanet Survey Satellite (TESS)

Sources

Privacy