psi1 Dra B

Planetary system · 74.1 light-years away · also HD 162004, HIP 86620

psi1 Dra B is 74.1 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G0 V star; the first was found in 2015 by radial velocity (McDonald Observatory).

Fly there in 3D

Worth knowing

psi1 Dra B b takes 8.5 years to go round its star once.

psi1 Dra B is one of 3 stars in its system: psi1 Dra A drawn from the Washington Double Star Catalog; the position of one more star is not catalogued, so it is not drawn.

The star

Spectral typeG0 V
Surface temperature6,212 K
Mass1.19 solar masses
Radius1.25574 solar radii
Luminosity2.117 times the Sun
Apparent magnitude5.808
Ageabout 3.3 billion years
Distance from the Sun74.1 light-years (22.7 parsecs)
Position (J2000)RA 265.4926°, Dec 72.1557°
ConstellationDraco

The other star

psi1 Dra A is a F5IV star of magnitude 4.6, with a computed orbit. In 2020 it was 30.2″ from psi1 Dra B, at position angle 196° (Washington Double Star Catalog, 17419+7209 STF2241 AB): 686 AU on the sky at this distance. The true distance can only be larger.

Planets (1)

PlanetYearOrbitRadiusMassFound
psi1 Dra B b8.5 years4.430 AU13.5 R⊕ estimated486.28 M⊕ minimumRadial Velocity, 2015

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

Privacy