WASP-77 A

Planetary system · 343.0 light-years away

WASP-77 A is 343 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G8 V star; the first was found in 2012 by transit (SuperWASP).

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Worth knowing

WASP-77 A b goes round its star every 32.6 hours, 65 times as often as Mercury goes round the Sun.

WASP-77 A is one of 2 stars in its system. The position of the other star is not catalogued, so only WASP-77 A and its planets are drawn.

The star

Spectral typeG8 V
Surface temperature5,617 K
Mass0.903 solar masses
Radius0.91 solar radii
Luminosity0.743 times the Sun
Apparent magnitude10.294
Ageabout 6.2 billion years
Distance from the Sun343.0 light-years (105.2 parsecs)
Position (J2000)RA 37.1555°, Dec -7.0607°
ConstellationCetus

Planets (1)

PlanetYearOrbitRadiusMassFound
WASP-77 A b32.6 hours0.0232 AU13.56 R⊕529.31 M⊕Transit, 2012

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.

Sources

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