Ross 176 b
A confirmed exoplanet orbiting Ross 176.
Compared with Earth
- Size
- About 1.8 times Earth's width.
- Mass
- About 4.6 times Earth's mass.
- Temperature
- About 409 °C (768 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 36 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 5 Earth days.
Planet
- Radius
- 1.84 × Earth
- Mass
- 4.57 × Earth
- Density
- 4.03 g/cm³
- Equilibrium temperature
- 682 K
- Starlight received
- 36.2 × Earth
- Orbital period
- 5.007 days
- Average distance from its star
- 0.0464 AU
Star
- Host star
- Ross 176
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,041 K
- Radius
- 0.569 × Sun
- Mass
- 0.577 × Sun
- Age
- 3 billion years
System
- Distance from Earth
- 151.5 light-years (46.45 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2025
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.