The star τ-Cas
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Seattle , τ-Cas is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible around 19:00 (PST), 43° above your north-western horizon. It will be lost to dawn twilight around 05:45, 27° above your north-eastern horizon.
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|
Name
τ-Cas
|
Object Type
Star
|
Position
| Constellation: | Cassiopeia |
| Magnitude: Variable | 4.88 (V) [1] 6.31 (BT) [1] 5.00 (VT) [1] 4.52 (G) [2] 5.14 (BP) [2] 3.90 (RP) [2] |
| B-V Color (mag): | 1.11 |
| Right ascension: | 23h47m03s [2] |
| Declination: | +58°39'08" [2] |
| Distance: | 52.5 parsec 171.2 lightyrs [2] |
| Proper motion (speed): | 83.4 mas/yr [2] |
| Proper motion (pos ang): | 46.2° |
Derived Quantities
| Absolute mag (V): | 1.28 |