α¹-Cap (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 , α¹-Cap will become visible at around 17:26 (EST), 30° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 21:05.
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|
Name
α¹-Cap
|
Object type
Star
|
Other names
Position
| Right ascension: | 20h17m38s [4] |
| Declination: | −12°30'29" [4] |
| Constellation: | Capricornus |
| Magnitude: | 4.23 (V) [2] 5.56 (BT) [2] 4.34 (VT) [2] 3.96 (G) [4] 4.49 (BP) [4] 3.26 (RP) [4] |
| Distance: | 249.0 parsec 811.8 lightyrs [4] |
| B-V Color (mag): | 1.04 |
| Proper motion (speed): | 21.8 mas/yr[4] |
| Proper motion (pos ang): | 85.7° |
Derived quantities
| Absolute mag (V): | -2.75 |
Visibility from Cambridge
All times shown in Cambridge local time.