Pr0211

Planetary system · 595.9 light-years away

Pr0211 is 596 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,300 K star; the first was found in 2012 by radial velocity (Fred Lawrence Whipple Observatory).

Fly there in 3D

Worth knowing

Pr0211 b goes round its star every 2.15 days, 41 times as often as Mercury goes round the Sun.

Pr0211 is one of 2 stars in its system. The position of the other star is not catalogued, so only Pr0211 and its planets are drawn.

The star

Surface temperature5,300 K
Mass0.935 solar masses
Radius0.827 solar radii
Luminosity0.4613 times the Sun
Apparent magnitude12.163
Ageabout 0.578 billion years
Distance from the Sun595.9 light-years (182.7 parsecs)
Position (J2000)RA 130.5477°, Dec 19.2770°
ConstellationCancer

Planets (2)

PlanetYearOrbitRadiusMassFound
Pr0211 b2.15 days0.0318 AU13.4 R⊕ estimated597.52 M⊕ minimumRadial Velocity, 2012
Pr0211 c13.3 years5.500 AU12.6 R⊕ estimated2475.9 M⊕ minimumRadial Velocity, 2016

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 5,300 K, 0.46 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.66 to 1.19 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 596 years ago, around 1430.

Nearest systems to it

Also found by Fred Lawrence Whipple Observatory

Sources

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