EXTRASOLAR PLANETS NOTABLE STARS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site HD 134987 A Sunlike star, also known as 23 Librae, in the constellation Libra around which has been found an extrasolar planet. This planet, the discovery of which was announced in 1999, orbits within its star's habitable zone at a mean distance from its host star slightly than that of Venus from the Sun. Host star Distance 81.5 light-years (25 pc) Spectral type G5 V Apparent magnitude 6.45 Position RA 15h 13m 28s; Dec. -25° 18' 33" Other catalog designations 23 Librae, HR 5657, SAO 183275 Planet Mass (Jupiter=1) 1.58 Semimajor axis 0.78 AU (117 million km, 73 million miles) Orbital period 260 days Eccentricity 0.25 Discovery 1999, SFSU Planet Search Method radial velocity Related categories    • NOTABLE STARS    • EXTRASOLAR PLANETS AND SUBSTELLAR OBJECTS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP