HD 118508

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]
Characteristics
Spectral type M2III[3]
U−B color index +1.85[4]
B−V color index +1.58[4]
Astrometry
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)
Details
Luminosity324[5] L☉
Temperature3,817[5] K
Other designations
BD+25 2652, FK5 3085, HD 118508, HIP 66417, HR 5123, SAO 82905.
Database references
SIMBADdata

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]

References

  1. 1 2 3 4 5 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. 1 2 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/0409579Freely accessible, 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:0806.2878Freely accessible, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x
  4. 1 2 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data.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. 1 2 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:1208.2037Freely accessible, 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
This article is issued from Wikipedia - version of the 8/4/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.