54 Eridani

54 Eridani
Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 04h 40m 26.51204s[1]
Declination −19° 40′ 17.3697″[1]
Apparent magnitude (V) 4.30[2]
Characteristics
Spectral type M3/4III[3]
U−B color index +1.80[4]
B−V color index +1.59[4]
Variable type LPV[5]
Astrometry
Radial velocity (Rv)-32.90 ± 0.8[6] km/s
Proper motion (μ) RA: 29.13[1] mas/yr
Dec.: -96.42[1] mas/yr
Parallax (π)8.85 ± 0.60[1] mas
Distance370 ± 20 ly
(113 ± 8 pc)
Other designations
DM Eri, BD−19° 988, HD 29755, HIP 21763, HR 1496, SAO 149818[5]
Database references
SIMBADdata

54 Eridani (54 Eri) is a star in the constellation Eridanus. Its apparent magnitude is 4.30.[2] It is a long-period variable star.[5]

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. Bibcode:2007A&A...474..653V. arXiv:0708.1752 Freely accessible. doi:10.1051/0004-6361:20078357.
  2. 1 2 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ↑ Houk, N.; Smith-Moore, M. (1988). "Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4, Declinations -26°.0 to -12°.0.". Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. 4. Bibcode:1988mcts.book.....H.
  4. 1 2 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Bibcode:1986EgUBV........0M.
  5. 1 2 3 "* 54 Eri". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 August 2017.
  6. ↑ Kharchenko, N. V.; et al. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. Bibcode:2007AN....328..889K. arXiv:0705.0878 Freely accessible. doi:10.1002/asna.200710776.


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