σ-Cyg (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Cambridge , σ-Cyg is visible in the dawn sky, rising at 21:42 (EDT) and reaching an altitude of 58° above the eastern horizon before fading from view as dawn breaks at around 04:13.
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Name
σ-Cyg
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Object type
Star
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Other names
Position
| Right ascension: | 21h17m24s [4] |
| Declination: | +39°23'40" [4] |
| Constellation: | Cygnus |
| Magnitude: Variable | 4.24 (V) [2] 4.34 (BT) [2] 4.25 (VT) [2] 4.18 (G) [4] 4.25 (BP) [4] 4.00 (RP) [4] |
| Distance: | 853.9 parsec 2783.8 lightyrs [4] |
| B-V Color (mag): | 0.08 |
| Proper motion (speed): | 3.6 mas/yr[4] |
| Proper motion (pos ang): | 176.9° |
Derived quantities
| Absolute mag (V): | -5.42 |
Sources