HD 141569

HD 141569

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HD 141569 is a blue-white dwarf star approximately 320 light-years away in the constellation of Libra. The primary star has two red dwarf companions (orbiting each other) at about nine arseconds. In 1999, a protoplanetary disk was discovered around the star. A gap in the disk speculate a possible extrasolar planet forming in the disk. In January 1999, NASA announced a protoplanetary disk around HD 141569. The Hubble Space Telescope showed that the disk appears to come in two parts (inner and outer). It superficially resembles the largest gap in Saturn's rings (known as the Cassini division).show more

Product details

  • Paperback | 128 pages
  • 152 x 229 x 8mm | 200g
  • Dict
  • Saarbrucken, Germany
  • English
  • black & white illustrations
  • 6136690365
  • 9786136690360