τ-Cas (Star)
Color-magnitude diagram
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Cambridge , τ-Cas is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight at around 04:09, 40° above your north-eastern horizon. At dusk, it will become visible at around 21:10 (EDT), 11° above your northern horizon.
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|
Name
τ-Cas
|
Object type
Star
|
Other names
Position
| Right ascension: | 23h47m03s [4] |
| Declination: | +58°39'08" [4] |
| Constellation: | Cassiopeia |
| Magnitude: Variable | 4.88 (V) [2] 6.31 (BT) [2] 5.00 (VT) [2] 4.57 (G) [4] 5.12 (BP) [4] 3.87 (RP) [4] |
| Distance: | 53.3 parsec 173.6 lightyrs [4] |
| B-V Color (mag): | 1.11 |
| Proper motion (speed): | 82.9 mas/yr[4] |
| Proper motion (pos ang): | 46.7° |
Derived quantities
| Absolute mag (V): | 1.25 |
Visibility from Cambridge
All times shown in Cambridge local time.