α-Lac (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From South El Monte , α-Lac is visible in both the dusk and dawn skies. In the evening, it will become visible at around 18:38 (PST), 23° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 4 hours and 30 minutes after the Sun at 22:09 (PST). In the morning, it will rise at 02:38 – 3 hours and 52 minutes before the Sun – and reach an altitude of 17° above the north-eastern horizon before fading from view as dawn breaks at around 05:30.
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Name
α-Lac
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Object type
Star
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Other names
Position
| Right ascension: | 22h31m17s [6] |
| Declination: | +50°16'57" [6] |
| Constellation: | Lacerta |
| Magnitude: | 3.78 (V) [3] 3.81 (BT) [2] 3.78 (VT) [2] 3.78 (G) [6] 3.77 (BP) [6] 3.72 (RP) [6] |
| Distance: | 31.8 parsec 103.5 lightyrs [6] |
| B-V Color (mag): | 0.03 |
| Proper motion (speed): | 138.4 mas/yr[6] |
| Proper motion (pos ang): | 82.7° |
Derived quantities
| Absolute mag (V): | 1.27 |
Sources