HD 118508

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HD 118508
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension  13h 36m 59.08289s[1]
Declination +24° 36′ 47.8734″[1]
Apparent magnitude (V) 5.8021±0.0017[2]
Spectral type M2III[3]
U−B color index +1.85[4]
B−V color index +1.58[4]
Radial velocity (Rv)−35.69±0.18[2] km/s
Proper motion (μ) RA: -26.20[1] mas/yr
Dec.: -2.02[1] mas/yr
Parallax (π)7.11 ± 0.34[1] mas
Distance460 ± 20 ly
(141 ± 7 pc)
Luminosity324[5] L
Temperature3,817[5] K
Other designations
BD+25 2652, FK5 3085, HD 118508, HIP 66417, HR 5123, SAO 82905.
Database references

HD 118508 is a variable star in the northern constellation of Boötes. It varies marginally in luminosity with an amplitude of 0.04 in magnitude.[6]


  1. ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. ^ a b Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272.
  3. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x
  4. ^ a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
  5. ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
  6. ^ Percy, John R.; Au, Winnie (November 1994), "APT Observations of Small-Amplitude Red Variables", Information Bulletin on Variable Stars (4114): 1, Bibcode:1994IBVS.4114....1P

External links[edit]