NGTS-3 A

Planetary system · 2426.5 light-years away

NGTS-3 A is 2,427 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G6 V star; the first was found in 2018 by transit (Next-Generation Transit Survey (NGTS)).

Fly there in 3D

Worth knowing

NGTS-3 A b goes round its star every 40.2 hours, 53 times as often as Mercury goes round the Sun.

NGTS-3 A is one of 2 stars in its system. The position of the other star is not catalogued, so only NGTS-3 A and its planets are drawn.

The star

Spectral typeG6 V
Surface temperature5,600 K
Mass1.017 solar masses
Radius0.93 solar radii
Luminosity0.7178 times the Sun
Apparent magnitude14.669
Distance from the Sun2426.5 light-years (744.0 parsecs)
Position (J2000)RA 94.4448°, Dec -35.7064°
ConstellationColumba

Planets (1)

PlanetYearOrbitRadiusMassFound
NGTS-3 A b40.2 hours0.0230 AU16.589 R⊕756.44 M⊕Transit, 2018

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 5,600 K, 0.72 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.81 to 1.44 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 2,427 years ago, around 400 BC.

Nearest systems to it

Also found by Next-Generation Transit Survey (NGTS)

Sources

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