Tau Ursae Majoris
From Infogalactic: the planetary knowledge core
 Location of τ Ursae Majoris (circled) |
|
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Ursa Major |
| Right ascension | 09h 10m 55.1s |
| Declination | +63° 30' 49" |
| Apparent magnitude (V) | +4.67 |
| Characteristics | |
| Spectral type | F3-4IIIm |
| Astrometry | |
| Distance | 122 ± 3 ly (37 ± 1 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
Tau Ursae Majoris (Tau UMa, τ Ursae Majoris, τ UMa) is a binary star in the constellation Ursa Major. It is approximately 122 light years from Earth.
Tau Ursae Majoris is a spectroscopic binary which is classified as a yellow-white F-type giant with an apparent magnitude of +4.67. The binary system completes one orbit every 1062 days.
With φ, h, υ, θ, e, and f, it composed the Arabic asterism Sarīr Banāt al-Na'sh, the Throne of the daughters of Na'sh, and al-Haud, the Pond,[1]
References
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