National Astronomical Observatory of Japan

Discovery of a Retrograde or Highly Tilted Extrasolar Planet

| Science


Two teams of astronomers have found that extrasolar planet HAT-P-7b, discovered in 2008, has a retrograde or highly tilted orbit. On UT May 30, 2008, a Japanese collaboration led by Norio Narita (National Astronomical Observatory of Japan) used the Subaru Telescope's High Dispersion Spectrograph (HDS) to observe the HAT-P-7 planetary system, which is about 1000 light years distant from Earth, and found the first evidence of a retrograde orbit of the extrasolar planet HAT-P-7b.


More info: Subaru telescope page