θ-UMa (Star)

R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.

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From Cambridge , θ-UMa will become visible at around 20:59 (EDT), 71° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 03:34 when it dips 16° above your north-western horizon.

Name θ-UMa
Object type Star
Other names
θ-UMa
Theta Ursae Majoris
25-UMa
25 Ursae Majoris
HR 3775[1]
HD 82328
NSV 4519
HIP 46853[5]
TYC 3432-1451-1[4]
Position
Right ascension:09h32m52s [3]
Declination:+51°40'42" [3]
Constellation:Ursa Major
Magnitude:
Variable
3.18 (V) [3]
3.75 (BT) [2]
3.23 (VT) [2]
Distance:13.5 parsec
43.9 lightyrs [5]
B-V Color (mag):0.48
Proper motion (speed):1.09 arcsec/yr[5]
Proper motion (pos ang):240.5°
Derived quantities
Absolute mag (V):2.53

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