BD+20°2457 c is a massive extrasolar planet located between 320 to 980 light years away in the constellation of Leo, orbiting the 10th magnitude K-type bright giant star BD+20°2457. It has mass 12.47 times greater than Jupiter and it takes 1.7 years to orbit the star. However because of its high minimum mass, this object may most likely be a brown dwarf if the true mass of this object is known. In this case, there would be two brown dwarfs in this stellar system that orbits the star.

PropertyValue
dbpprop:abstract
  • BD+20°2457 c is a massive extrasolar planet located between 320 to 980 light years away in the constellation of Leo, orbiting the 10th magnitude K-type bright giant star BD+20°2457. It has mass 12.47 times greater than Jupiter and it takes 1.7 years to orbit the star. However because of its high minimum mass, this object may most likely be a brown dwarf if the true mass of this object is known. In this case, there would be two brown dwarfs in this stellar system that orbits the star. This planet was discovered on June 10, 2009 using the Hobby-Eberly Telescope.
dbpprop:angDist
  • 6.7–20.1
dbpprop:apastron
  • 2.37 (xsd:double)
dbpprop:appmagV
  • 9.75 (xsd:double)
dbpprop:argPeri
  • 126.02 ± 16.54
dbpprop:class
  • K2II
dbpprop:constell
dbpprop:dec
dbpprop:discoverers
  • Niedzielski et al.
dbpprop:discoveryDate
  • June 10, 2009
dbpprop:discoveryMethod
dbpprop:discoverySite
dbpprop:discoveryStatus
  • Published
dbpprop:distLy
  • 650 ± 330
dbpprop:distPc
  • 200 ± 100
dbpprop:eccentricity
  • 0.18 ± 0.06
dbpprop:periastron
  • 1.65 (xsd:double)
dbpprop:period
  • 621.99 ± 10.2
dbpprop:periodYear
  • 1.7029 ± 0.0279
dbpprop:planet
  • c
dbpprop:ra
dbpprop:semiAmp
  • ?
dbpprop:semimajor
  • 2.01 (xsd:double)
dbpprop:simbad
  • BD%2B20+2457+c
dbpprop:star
dbpprop:tPeri
  • 53866.95 ± 27.99
dbpprop:wikiPageUsesTemplate
rdfs:comment
  • BD+20°2457 c is a massive extrasolar planet located between 320 to 980 light years away in the constellation of Leo, orbiting the 10th magnitude K-type bright giant star BD+20°2457. It has mass 12.47 times greater than Jupiter and it takes 1.7 years to orbit the star. However because of its high minimum mass, this object may most likely be a brown dwarf if the true mass of this object is known. In this case, there would be two brown dwarfs in this stellar system that orbits the star.
rdfs:label
  • BD+20°2457 c
skos:subject
foaf:page
is dbpprop:exoplanet of