DE Bootis HR 5553

Stellar classification



  • X -7
  • Y 33
  • Z 17
→ Sol: 38

Object type

  • Variable of RS CVn type
  • Star
  • Infra-Red source
  • High proper-motion Star
  • Spectroscopic binary
  • UV-emission source
  • Variable Star
  • X-ray source
simbad:V* DE Boo


HR 5553 is a binary star system located thirty-eight light-years away, in the constellation Boötes. The combined spectrum of the pair matches that of a K-type main sequence star with a stellar classification of K0 V. The two stars orbit each other with a period of 125 days and a large eccentricity of 0.51.

An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk at a radius of 34.2 AU. The temperature of this dust is 40 K. The estimated mass of the dust is 0.0002 times the mass of the Earth.

This article uses material from the Wikipedia article "HR 5553", which is released under the Creative Commons Attribution-Share-Alike License 3.0.