2 Ursae Minoris
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| 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 | K2II-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) |
| Absolute magnitude (MV) | -0.67 |
| Details | |
| Mass | 2.27 ± 0.41 [2] M☉ |
| Other designations | |
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 is because of changes in constellation borders. Therefore the star is usually referred only by its catalog numbers such as HR 285 or HD 5848.
[edit] References
- ^ a b c d e van Leeuwen, F. (2007). "HIP 5372". Hipparcos, the New Reduction. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=5361. Retrieved 2010-02-14.
- ^ Stello et al. (2008). "Oscillating K Giants with the WIRE Satellite: Determination of Their Asteroseismic Masses". The Astrophysical Journal Letters 674 (1): L53–L56. Bibcode 2008ApJ...674L..53S. doi:10.1086/528936. http://www.iop.org/EJ/article/1538-4357/674/1/L53/22437.html.
- "SIMBAD Astronomical Database". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/. Retrieved 2007-01-04.
[edit] External links
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