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Gliese 86

Gliese 86 Observation data Epoch J2000.0      Equinox J2000.0 Constellation Eridanus Gliese 86 A Right ascension 02h 10m 25.93425s Declination -50° 49' 25.4179? Apparent magnitude (V) 6.17 Gliese 86 B Right ascension 02h 10m 26s Declination -50° 49' 25? Apparent magnitude (V) Characteristics Spectral type K1V + D? U-B color index 0.45 B-V color index 0.812 V-R color index 0.45 R-I color index 0.40 Astrometry Radial velocity (Rv) 56.7 km/s Proper motion (µ) RA: 2092.86 ± 0.27 mas/yr Dec.: 653.21 ± 0.30 mas/yr Parallax (p) 92.74 ± 0.32 mas Distance 35.2 ± 0.1 ly (10.78 ± 0.04 pc) Details Gliese 86 A Mass 0.797 M? Radius 0.855 ± 0.005 R? Luminosity (bolometric) 0.47 L? Surface gravity (log g) 4.51 cgs Temperature 5,217 K Metallicity -0.23 dex Rotation 31 days Age 2.4 Gyr Other designations Database references SIMBAD data Exoplanet Archive data ARICNS data Extrasolar Planets Encyclopaedia data Gliese 86 (13 G. Eridani) is a K-type main-sequence star approximately 35 light-years away in the constellation of Eridanus. It has been confirmed that a white dwarf orbits the primary star. In 1998 the European Southern Observatory announced that an extrasolar planet was orbiting the star. ^ a b c d e f Cite error: The named reference van_Leeuwen2007 was invoked but never defined (see the help page). ^ Cite error: The named reference spectral_library_gj86A was invoked but never defined (see the help page). ^ a b Cite error: The named reference aj132_1_161 was invoked but never defined (see the help page). ^ Cite error: The named reference mnras361_1_L15 was invoked but never defined (see the help page). ^ a b c d Cite error: The named reference apj764_1_78 was invoked but never defined (see the help page). ^ Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008). "Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics". The Astrophysical Journal 687 (2): 1264–1293. arXiv:0807.1686. Bibcode:2008ApJ...687.1264M. doi:10.1086/591785.  CS1 maint: Multiple names: authors list (link) ^ Cite error: The named reference eso9855 was invoked but never defined (see the help page). Cite error: There are tags on this page, but the references will not show without a {{reflist|group=note}} template (see the help page).
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