2 Ursae Minoris
From Infogalactic: the planetary knowledge core
| 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 | |
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
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