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 |
| Distance | 19.0 ± 0.1 ly (5.82 ± 0.04 pc) |
| Absolute magnitude (MV) | +12.75 |
| Details | |
| Mass | 0.35 M☉ |
| Radius | 118.320 km R☉ |
| Luminosity | 0.00069 L☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
Ross 47 is a flare star of spectral type M4, located in constellation Orion at 18.99 light-years from Earth.[1]
References
- 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.
- ↑ 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)
- ↑ 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).
- ↑ Luyten, Willem Jacob (1979). "NLTT 15489". NLTT Catalogue.
- ↑ Luyten, Willem Jacob (1979). "LHS 31". LHS Catalogue, 2nd Edition.
- ↑ Gliese, W. and Jahreiß, H. (1991). "Gl 213". Preliminary Version of the Third Catalogue of Nearby Stars.
- ↑ Van Altena W. F., Lee J. T., Hoffleit E. D. (1995). "GCTP 1305". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.).
- ↑ Perryman; et al. (1997). "HIP 26857". The Hipparcos and Tycho Catalogues.
- ↑ Perryman; et al. (1997). "HIP 26857". The Hipparcos and Tycho Catalogues.
- Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs". The Astrophysical Journal 784 (2): 156. arXiv:1312.3241. Bibcode:2014ApJ...784..156D. doi:10.1088/0004-637X/784/2/156. Table with parallaxes.
Notes
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