τ-Boo (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Cambridge , τ-Boo will become visible at around 20:56 (EDT), 32° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:58.
Name
τ-Boo
|
Object type
Star
|
Other names
Position
Right ascension: | 13h47m15s [4] |
Declination: | +17°27'25" [4] |
Constellation: | Bootes |
Magnitude: Variable | 4.49 (V) [2] 5.06 (BT) [2] 4.54 (VT) [2] 4.36 (G) [4] 4.61 (BP) [4] 3.96 (RP) [4] |
Distance: | 15.6 parsec 50.9 lightyrs [4] |
B-V Color (mag): | 0.45 |
Proper motion (speed): | 473.2 mas/yr[4] |
Proper motion (pos ang): | 277.7° |
Derived quantities
Absolute mag (V): | 3.52 |
Sources