Hubble image archive

Star Devouring a Planet

This is an artist's concept of the exoplanet WASP-12b. It is the hottest known planet in the Milky Way galaxy, and potentially the shortest lived. The planet is only 2 million miles from its sunlike parent star – a fraction of Earth's distance from the Sun. Gravitational tidal fo...

Date
Jan 1, 2010
Mission
Hubble Space Telescope
Archive ID
hubblesite-images-2010-15-2725-image
By

This is an artist's concept of the exoplanet WASP-12b. It is the hottest known planet in the Milky Way galaxy, and potentially the shortest lived. The planet is only 2 million miles from its sunlike parent star – a fraction of Earth's distance from the Sun. Gravitational tidal forces from the star stretch the planet into an egg shape. The planet is so hot that it has puffed up to the point where its outer atmosphere spills onto the star. An accretion bridge streams toward the star and material is smeared into a swirling disk. The planet may be completely devoured by the star in 10 million years. The planet is too far away for the Hubble Space Telescope to photograph, but this interpretation is based in part on analysis of Hubble spectroscopic and photometric data.

Credits

Artwork: NASA, ESA, and G. Bacon (STScI);
Science: NASA, ESA, and C. Haswell (The Open University, UK)

Image Details

About The Object
Object NameWASP-12b
Object DescriptionPlanet around a nearby yellow dwarf star
R.A. Position06h 30m 32s.78
Dec. Position+29° 40' 20".3
ConstellationAuriga
Distance600 light-years (184 parsecs)
About The Data
Data DescriptionThe data are from HST proposal : C. Haswell (The Open University), P. Wheatley (University of Warwick), L. Hebb and A. Cameron (University of St. Andrews), C. Froning (University of Colorado, Boulder), A. Carter (The Open University), B. Loeillet (Laboratoire d'Astrophysique de Marseille), C. Helling (University of St. Andrews), and L. Fossati (The Open University).
InstrumentHST>COS
Exposure DatesSept. 24-25, 2009, Exposure Time: Approx. 14,000 seconds total (approx. 4 hours)
FiltersNCM1, Grating: G285M

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