Altair (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 , Altair is difficult to observe as it will appear no higher than 14° above the horizon. It is visible in the dawn sky, rising at 05:03 (EST) – 2 hours and 8 minutes before the Sun – and reaching an altitude of 14° above the eastern horizon before fading from view as dawn breaks around 06:28.
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|
Name
Altair
|
Object Type
Star
|
Position
| Constellation: | Aquila |
| Magnitude: | 0.93 (V) [2] 1.25 (BT) [1] 0.95 (VT) [1] |
| B-V Color (mag): | 0.27 |
| Right ascension: | 19h50m46s [2] |
| Declination: | +08°52'02" [2] |
| Distance: | 5.1 parsec 16.7 lightyrs [3] |
| Proper motion (speed): | 660.3 mas/yr [3] |
| Proper motion (pos ang): | 54.3° |
Derived Quantities
| Absolute mag (V): | 2.38 |
Visibility from Cambridge
All times shown in Cambridge local time.