The star α-Lac
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Cambridge , α-Lac is visible in the dawn sky, becoming accessible at around 01:21 (EDT), when it rises to an altitude of 17° above your north-eastern horizon. It will then reach an altitude of 43° before fading from view as dawn breaks at around 04:38.
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|
Name
α-Lac
|
Object Type
Star
|
Position
| Constellation: | Lacerta |
| Magnitude: | 3.78 (V)[2] 3.81 (BT)[1] 3.78 (VT)[1] 3.75 (RP)[3] 3.68 (G)[3] 3.80 (BP)[3] |
| B-V Color (mag): | 0.03 |
| Right Ascension: | 22h31m17s [3] |
| Declination: | +50°16'57" [3] |
| Distance: | 30.8 parsec 100.5 lightyrs [3] |
| Proper motion (speed): | 139.8 mas/yr [3] |
| Proper motion (pos ang): | 82.9° |
Derived Quantities
| Absolute Mag (V): | 1.34 |