HATS-59

Planetary system · 2096.8 light-years away

HATS-59 is 2,097 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,670 K star; the first was found in 2018 by transit (HATSouth).

Fly there in 3D

Worth knowing

HATS-59 b goes round its star every 5.42 days, 16 times as often as Mercury goes round the Sun.

The star

Surface temperature5,670 K
Mass1.038 solar masses
Radius1.036 solar radii
Luminosity0.99 times the Sun
Apparent magnitude14.033
Ageabout 4.3 billion years
Distance from the Sun2096.8 light-years (642.9 parsecs)
Position (J2000)RA 170.3243°, Dec -22.3882°
ConstellationCrater

Planets (2)

PlanetYearOrbitRadiusMassFound
HATS-59 b5.42 days0.0611 AU12.621 R⊕256.17 M⊕Transit, 2018
HATS-59 c3.9 years2.504 AU12.3 R⊕ estimated4036.4 M⊕ minimumRadial Velocity, 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 5,670 K, 0.99 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.95 to 1.68 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 2,097 years ago, around 100 BC.

Nearest systems to it

Also found by HATSouth

Sources

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