About this world
HD 34445 c is a Neptune-like planet orbiting HD 34445, a yellow, Sun-like star (type G0V) 150 light-years from Earth. It is about 0.75 times the size of Jupiter (its size estimated from its mass), with at least 0.17 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 215 days at 0.72 AU from its star.
Its equilibrium temperature is about 390 K (117 °C): too cold for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2017 by radial velocity with Multiple Observatories. The star wobbles toward and away from us, Doppler-shifting its spectrum. HD 34445 has 6 known planets; the others are HD 34445 e, HD 34445 d, HD 34445 f, HD 34445 b and HD 34445 g.