Positional schmatic 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 planet's true sizes. The three outermost planets, b, c, and d, are detected in both the NICMOS and ground-based data. A fourth, inner planet, e, was detected in ground-based observations. The orbits appear elongated because of a slight tilt of the plane of the orbits relative to our line of sight. The size of the HR 8799 planetary system is comparable to our Solar System, as indicated by the orbit of Neptune, shown to scale.


NASAESA, and R. Soummer (STScI)

About the Image

NASA press release
NASA caption
Release date:10 October 2011, 15:26
Size:1032 x 1032 px

About the Object

Name:HR 8799
Type:Milky Way : Planet

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86.6 KB
Screensize JPEG
80.0 KB

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