| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Ursa Major |
| Right ascension | 11h 09m 39.8s |
| Declination | +44° 29' 55" |
| Apparent magnitude (V) | +3.00 |
| Absolute magnitude (V) | -0.27 |
| Distance | 147 ± 4 ly (45 ± 1 pc) |
| Spectral type | K1III |
| Other designations | |
Psi Ursae Majoris (ψ UMa, ψ Ursae Majoris) is a star in the constellation Ursa Major.
In Chinese astronomy, Psi Ursae Majoris is called Tien Tsan or Ta Tsun, "Extremely Honorable"[1]. The name was possibly derived from the word 太尊, Pinyin: Tàizūn, meaning Royals, because this star is marking itself and stand alone in Royals asterism, Purple Forbidden enclosure (see : Chinese constellation).
Psi Ursae Majoris is an orange K-type giant with an apparent magnitude of +3.00. It is approximately 147 light years from Earth.
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