26 Hydrae

26 Hydrae
Observation data
Epoch J2000      Equinox J2000
Constellation Hydra
Right ascension 09h 19m 46.38236s[1]
Declination −11° 58′ 29.4639″[1]
Apparent magnitude (V) 4.770[2]
Characteristics
Spectral type G8II[3]
U−B color index +0.67[4]
B−V color index +0.93[4]
Astrometry
Radial velocity (Rv)-1.18 ± 0.09[5] km/s
Proper motion (μ) RA: -27.65[1] mas/yr
Dec.: 12.76[1] mas/yr
Parallax (π)9.68 ± 0.55[1] mas
Distance340 ± 20 ly
(103 ± 6 pc)
Details
Mass2.72[6] M☉
Radius14[5] R☉
Luminosity135 L☉
Surface gravity (log g)2.48 ± 0.07[7] cgs
Temperature5003 ± 82[6] K
Metallicity [Fe/H]-0.13 ± 0.06[7] dex
Age0.51[6] Gyr
Other designations
BD−11° 2609, FK5 2741, HD 80499, HIP 45751, HR 3706, SAO 155096
Database references
SIMBADdata

26 Hydrae (26 Hya) is a star in the constellation Hydra. Its apparent magnitude is 4.78.

References

  1. 1 2 3 4 5 van Leeuwen, F.; et al. (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. ↑ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
  4. 1 2 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Bibcode:1986EgUBV........0M.
  5. 1 2 Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal. 135: 209. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.
  6. 1 2 3 Luck, R. Earle (2015). "Abundances in the Local Region. I. G and K Giants". The Astronomical Journal. 150 (3): 88. arXiv:1507.01466. Bibcode:2015AJ....150...88L. doi:10.1088/0004-6256/150/3/88.
  7. 1 2 Wu, Yue; Singh, H. P.; Prugniel, P.; Gupta, R.; Koleva, M. (2010). "Coudé-feed stellar spectral library – atmospheric parameters". Astronomy & Astrophysics. 525: A71. arXiv:1009.1491. Bibcode:2011A&A...525A..71W. doi:10.1051/0004-6361/201015014.
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