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51 Pegasi
51 Pegasi The red dot shows the location of 51 Pegasi in Pegasus. Observation data Epoch J2000.0      Equinox J2000.0 Constellation Pegasus Right ascension 22h 57m 27.98004s Declination +20° 46' 07.7912? Apparent magnitude (V) 5.49 Characteristics Spectral type G5V Apparent magnitude (B) 6.16 Apparent magnitude (R) 5.0 Apparent magnitude (I) 4.7 Apparent magnitude (J) 4.66 Apparent magnitude (H) 4.23 Apparent magnitude (K) 3.91 U-B color index +0.20 B-V color index +0.67 V-R color index 0.37 R-I color index 0.32 Astrometry Radial velocity (Rv) -33.7 km/s Proper motion (µ) RA: 207.25 ± 0.31 mas/yr Dec.: 60.34 ± 0.30 mas/yr Parallax (p) 64.07 ± 0.38 mas Distance 50.9 ± 0.3 ly (15.61 ± 0.09 pc) Absolute magnitude (MV) 4.51 Details Mass 1.11 M? Radius 1.237 ± 0.047 R? Luminosity 1.30 L? Surface gravity (log g) 4.33 cgs Temperature 5571 ± 102 K Metallicity 0.20 dex Rotation 21.9 ± 0.4 days Age 6.1–8.1 Gyr Other designations Database references SIMBAD data Exoplanet Archive data ARICNS data Extrasolar Planets Encyclopaedia data 51 Pegasi (abbreviated 51 Peg) is a Sun-like star located 50.9 light-years (15.6 parsecs) from Earth in the constellation Pegasus. It was the first extrasolar Sun-like star found to have a planet orbiting it. ^ Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page). ^ Cite error: The named reference apj694_2_1085 was invoked but never defined (see the help page). ^ Cite error: The named reference aaa508_3_1417 was invoked but never defined (see the help page). ^ Cite error: The named reference aj125_2_984 was invoked but never defined (see the help page). ^ Cite error: The named reference clpl4 was invoked but never defined (see the help page). ^ Cite error: The named reference aaa508_3_1313 was invoked but never defined (see the help page). ^ Cite error: The named reference mnras408_3_1666 was invoked but never defined (see the help page). ^ Cite error: The named reference apj687_2_1264 was invoked but never defined (see the help page). ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page). ^ Cite error: The named reference nature378_6555_355 was invoked but never defined (see the help page).
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