τ-Per (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-Per will become visible at around 20:16 (EDT), 38° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 23:04 when it dips 17° above your north-western horizon.
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|
Name
τ-Per
|
Object type
Star
|
Position
| Right ascension: | 02h54m15s [3] |
| Declination: | +52°45'44" [3] |
| Constellation: | Perseus |
| Magnitude: Variable | 3.94 (V) [3] 4.86 (BT) [2] 4.02 (VT) [2] |
| Distance: | 77.9 parsec 254.1 lightyrs [5] |
| B-V Color (mag): | 0.74 |
| Proper motion (speed): | 4.5 mas/yr[5] |
| Proper motion (pos ang): | 196.1° |
Derived quantities
| Absolute mag (V): | -0.52 |
Visibility from Cambridge
All times shown in Cambridge local time.