HD 3765

Planetary system · 58.5 light-years away · also HD 3765, HIP 3206

HD 3765 is 58.5 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K2V star; the first was found in 2021 by radial velocity (Multiple Observatories).

Fly there in 3D

Worth knowing

HD 3765 b takes 3.3 years to go round its star once.

The star

Spectral typeK2V
Surface temperature5,050 K
Mass0.851785 solar masses
Radius0.83061 solar radii
Luminosity0.3834 times the Sun
Apparent magnitude7.36
Ageabout 2 billion years
Distance from the Sun58.5 light-years (17.9 parsecs)
Position (J2000)RA 10.2073°, Dec 40.1843°
ConstellationAndromeda

Planets (1)

PlanetYearOrbitRadiusMassFound
HD 3765 b3.3 years2.108 AU8.56 R⊕ estimated54.984 M⊕ minimumRadial Velocity, 2021

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 5,050 K, 0.38 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.61 to 1.11 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 58 years ago, within living memory.

Nearest systems to it

Also found by Multiple Observatories

Sources

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