Altair (Star)
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Ashburn (click to change), Altair is visible in the evening sky, becoming accessible at around 20:40 (EDT) as the dusk sky fades, 43° above your south-eastern horizon. It will then reach its highest point in the sky at 23:18, 59° above your southern horizon. It will continue to be observable until around 04:50, when it sinks to 11° above your western horizon.
|
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: | 4.9 parsec 16.1 lightyears [2] |
| Proper motion (speed): | 663.0 mas/yr [2] |
| Proper motion (pos ang): | 54.2° |
Derived Quantities
| Absolute Mag (V): | 2.46 |