HR 8799
young star with four photographed giant planets
133 light-years from Earth
One of the first planetary systems ever photographed directly (2008). Four giant planets, each several times Jupiter's mass, glow in infrared from the heat of their birth, some 30 to 40 million years ago.
- 133 light-years · planets 16 to 68 AU out (Jupiter's orbit is 5 AU)
- orbits of about 50 to 460 years, sped up here
- kind
- star
- size
- 2,090,000 km across
- orbiting it
- HR 8799 b