The star τ-Cyg
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Ashburn , τ-Cyg is visible all night. It will become visible around 21:23 (EDT) as the dusk sky fades, 46° above your eastern horizon. It will then reach its highest point in the sky at 01:13, 88° above your southern horizon. It will be lost to dawn twilight around 05:09, 44° above your western horizon.
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|
Name
τ-Cyg
|
Object Type
Star
|
Position
| Constellation: | Cygnus |
| Magnitude: Variable | 3.74 (V) [1] 4.20 (BT) [1] 3.78 (VT) [1] |
| B-V Color (mag): | 0.36 |
| Right ascension: | 21h14m47s [1] |
| Declination: | +38°02'43" [1] |
| Distance: | 20.3 parsec 66.3 lightyrs [2] |
| Proper motion (speed): | 455.1 mas/yr [2] |
| Proper motion (pos ang): | 25.6° |
Derived Quantities
| Absolute mag (V): | 2.20 |
Visibility from Ashburn
All times shown in Ashburn local time.