Ross 47

Ross 47
Observation data
Epoch J1950.0      Equinox J1950.0
Constellation Orion
Right ascension 5h 39m 14s
Declination +12° 29 18
Apparent magnitude (V) +11.56
Characteristics
Spectral type M4.0Vn
U−B color index +14.264
B−V color index +13.130
Variable type BY Dra
Astrometry
Radial velocity (Rv)105.85 km/s
Parallax (π)171.72 ± 1.06[1] mas
Distance19.0 ± 0.1 ly
(5.82 ± 0.04 pc)
Absolute magnitude (MV)+12.75
Details
Mass0.35 M
Radius118.320 km R
Luminosity0.00069 L
Other designations
Database references
SIMBADdata

Ross 47 is a flare star of spectral type M4, located in constellation Orion at 18.99 light-years from Earth.[1]

References

  1. 1 2 Gatewood, George (2008). "Astrometric Studies of Aldebaran, Arcturus, Vega, the Hyades, and Other Regions". The Astronomical Journal. 136 (1): 452–460. Bibcode:2008AJ....136..452G. doi:10.1088/0004-6256/136/1/452.
  2. Porter, J. G.; Yowell, E. J.; Smith, E. S. (1930). "A catalogue of 1474 stars with proper motion exceeding four-tenths year.". Publications of the Cincinnati Observatory. 20: 1–32. Bibcode:1930PCinO..20....1P. Page 9 (Ci 20 344).
  3. Gliese, W. & Jahreiß, H. (1991). "Gl 213". Preliminary Version of the Third Catalogue of Nearby Stars.
  4. Perryman; et al. (1997). "HIP 26857". The Hipparcos and Tycho Catalogues.
  5. Luyten, Willem Jacob (1979). "LHS 31". LHS Catalogue, 2nd Edition.
  6. Luyten, Willem Jacob (1979). "NLTT 15489". NLTT Catalogue.
  7. Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 1305". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.).
  8. Ross, Frank E. (1925). "New proper-motion stars, (first list)". Astronomical Journal. 36 (852-853): 96–99. Bibcode:1925AJ.....36...96R. doi:10.1086/104687. Page 97 (Ross 47)
  9. Perryman; et al. (1997). "HIP 26857". The Hipparcos and Tycho Catalogues.

Notes

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