2 Ursae Minoris
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This infobox, "Template:Starbox begin", is from Wikipedia. The list of its authors can be seen in its edit history page. The data in this infobox may not agree or state what Wikipedia states. |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 01h 08m 44.88s[1] |
| Declination | 86° 15′ 25.5″[1] |
| Apparent magnitude (V) | 4.24 |
| Characteristics | |
| Spectral type | K2 II-III |
| Astrometry | |
| Proper motion (μ) | RA: 80.65 ± 0.16[1] mas/yr Dec.: -11.54 ± 0.17[1] mas/yr |
| Parallax (π) | 11.64 ± 0.15[1] mas |
| Distance | 280 ± 4 ly (86 ± 1 pc) |
| Details | |
| Mass | 2.27 ± 0.41[2] M☉ |
| Luminosity | 183 ± 20[2] L☉ |
| Temperature | 4,549[2] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
2 Ursae Minoris (2 UMi) is a 4.24m orange giant star (spectral class K2II-III) near the northern celestial pole (RA: 01h 08m 44.88s, Dec: +86° 15′ 25.5″). Despite its Flamsteed designation, the star is actually located in the constellation Cepheus. This occurred when the constellation boundaries were changed in 1930 by Eugene Delporte. Therefore, the star is usually referred only by its catalog numbers such as HR 285 or HD 5848.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 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.
- ↑ 2.0 2.1 2.2 Stello, D. et al. (2008), "Oscillating K Giants with the WIRE Satellite: Determination of Their Asteroseismic Masses", The Astrophysical Journal Letters 674 (1): L53–L56, arXiv:0801.2155, Bibcode 2008ApJ...674L..53S, doi:10.1086/528936.
- ↑ Lua error in Module:Citation/CS1 at line 379: attempt to call method 'match' (a nil value).