WASP-177

Planetary system · 576.7 light-years away

WASP-177 is 577 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K2 star; the first was found in 2019 by transit (SuperWASP).

Fly there in 3D

Worth knowing

WASP-177 b goes round its star every 3.07 days, 29 times as often as Mercury goes round the Sun.

The star

Spectral typeK2
Surface temperature5,017 K
Mass0.876 solar masses
Radius0.885 solar radii
Luminosity0.3876 times the Sun
Apparent magnitude12.312
Ageabout 9.7 billion years
Distance from the Sun576.7 light-years (176.8 parsecs)
Position (J2000)RA 334.7970°, Dec -1.8344°
ConstellationAquarius

Planets (1)

PlanetYearOrbitRadiusMassFound
WASP-177 b3.07 days0.0396 AU17.71 R⊕161.46 M⊕Transit, 2019

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 5,017 K, 0.39 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.62 to 1.12 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 577 years ago, around 1450.

Nearest systems to it

Also found by SuperWASP

Sources

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