Astronomy:S Ursae Minoris
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Short description: Star in the constellation Ursa Minor
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Ursa Minor |
| Right ascension | 15h 29m 34.5775s[2] |
| Declination | +78° 38′ 00.2742″[2] |
| Apparent magnitude (V) | 7.5-<13.2[3] |
| Characteristics | |
| Spectral type | M6e-M9e[3] |
| Variable type | long period variable[3] |
| Astrometry | |
| Proper motion (μ) | RA: −30.986±0.303[2] mas/yr Dec.: 7.006±0.309[2] mas/yr |
| Parallax (π) | 2.5455 ± 0.1578[2] mas |
| Distance | 1,280 ± 80 ly (390 ± 20 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
S Ursae Minoris (S UMi) is a long period variable star in the constellation Ursa Minor, ranging from magnitude 7.5 to fainter than 13.2 over a period of 331 days.[3]
References
- ↑ "Download Data". AAVSO. https://www.aavso.org/data-download.
- ↑ 2.0 2.1 2.2 2.3 2.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 3.3 Watson, Christopher (4 January 2010). "S Ursae Minoris". AAVSO Website. American Association of Variable Star Observers. http://www.aavso.org/vsx/index.php?view=detail.top&oid=37376. Retrieved 10 March 2015.
- ↑ "S UMi". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=S+UMi.
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