HD 17925

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HD 17925
Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 02h 52m 32.13s[1]
Declination –12° 46′ 11.0″[1]
Apparent magnitude (V) 6.04
Characteristics
Spectral type K1 V
U−B color index 0.57
B−V color index 0.86
V−R color index 0.48
R−I color index 0.41
Variable type None
Astrometry
Radial velocity (Rv) +18.4 km/s
Proper motion (μ) RA: 397.41 ± 0.45[1] mas/yr
Dec.: -189.32 ± 0.36[1] mas/yr
Parallax (π) 96.60 ± 0.40[1] mas
Distance 33.8 ± 0.1 ly
(10.35 ± 0.04 pc)
Absolute magnitude (MV) 6.04
Details
Temperature 5225 ± 5.0[2] K
Metallicity [Fe/H] +0.10[3] dex
Rotation 6.6 days[3]
Age 100[4] Myr
Other designations
32 G. Eridani, GJ 117, BD-13 544, HR 857, HIP 13402, YPC 599

HD 17925 (32 G. Eridani) is a solitary K-type main sequence star located thirty-four light-years away, in the constellation Eridanus. It is a likely member of the Local Association of nearby, co-moving stars.[3]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007), "HIP 13402", Hipparcos, the New Reduction, retrieved 2009-12-11 
  2. ^ Kovtyukh et al. (2003), "High precision effective temperatures for 181 F-K dwarfs from line-depth ratios", Astronomy and Astrophysics 411 (3): 559–564, arXiv:astro-ph/0308429, Bibcode:2003A&A...411..559K, doi:10.1051/0004-6361:20031378 
  3. ^ a b c Maldonado, J. et al. (October 2010), "A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups", Astronomy and Astrophysics 521: A12, arXiv:1007.1132, Bibcode:2010A&A...521A..12M, doi:10.1051/0004-6361/201014948 
  4. ^ 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 

External links[edit]