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HR 8799 Planetary System

HR 8799 Planetary System
This artist's illustration shows the motion of three of the outermost planets in the HR 8799 system as measured over a 10-year period from Hubble Space Telescope archival data and more recent ground-based telescopic data.
  • Release Date
    October 6, 2011
  • Science Release
    Astronomers Find Elusive Planets in Decade-Old Hubble Data
    Read the release
  • Credits
    Illustration: NASA, ESA, and A. Feild (STScI); Science: NASA, ESA, and R. Soummer (STScI)

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Related Images & Videos

HR 8799 Exoplanet System

HR 8799 Exoplanet System

Left: This is an image of the star HR 8799 taken by Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS) in 1998. A mask within the camera (coronagraph) blocks most of the light from the star. In addition, software has been used to digitally subtract more...

NICMOS Image of HR 8799 Planetary System

NICMOS Image of HR 8799 Planetary System

This is an image of the star HR 8799 taken by Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS) in 1998. A mask within the camera (coronagraph) blocks most of the light from the star. In addition, software has been used to digitally subtract more starlight....

Software-Processed NICMOS Image of HR 8799 Planetary System

Software-Processed NICMOS Image of HR 8799 Planetary System

Recent, sophisticated software processing of the NICMOS data removes most of the scattered starlight to reveal three planets orbiting HR 8799. Astronomers used this decade-old image to calculate the orbits of the planets.

Positional Schmatic of the Members of the HR 8799 Exoplanet System

Positional Schematic of the Members of the HR 8799 Exoplanet System

This is an illustration of the HR 8799 exoplanet system based on the reanalysis of Hubble NICMOS data and ground-based observations. The positions of the star and the orbits of the four known planets are shown schematically. The sizes of the dots are not to scale with the...

Compass and Scale Image of HR 8799

Compass and Scale Image of HR 8799

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Last Updated
Feb 20, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

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