NOTABLE STARS EXTRASOLAR PLANETS 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 195019 A Sun-like star in the constellation Delphinus around which has been found a three-Jupiter-mass extrasolar planet of the epistellar Jovian type.1 Spectroscopic measurements of the host suggest that it is has a "quiet" chromosphere (an important factor in its suitability to support nearby life) and a metal-content somewhat greater than that of the Sun. Host star Distance 65.3 light-years (20 pc) Spectral type G3 IV-V Apparent magnitude 6.91 Temperature 5,330°C (5,799 K) Luminosity (Sun=1) 2.35 Mass (Sun=1) 0.95 Planet Mass (Jupiter=1) 3.43 ± 0.4 Semi-major axis 0.14 AU (21 million km, 13 million miles) Orbital period 18.3 ± 0.2 days Eccentricity 0.05 ± 0.04 Discovery 1998 by Marcy et al., Lick and Keck Obs. Method radial velocity Reference Fischer, D., Marcy, G., Butler, P., Vogt, S., and Apps, K. , 1998. "Planetary companions around two solar type stars: HD 195019 and HD 217107," PASP, 111, 50. 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