The open cluster M 39
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 19 arcminutes across.
Finder chart
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From Ashburn (click to change), M 39 is visible all night. It will become visible at around 21:55 (EDT) as the dusk sky fades, 21° above your north-eastern horizon. It will be lost to dawn twilight at around 04:21, 79° above your north-eastern horizon.
|
Name
M 39
|
Object Type
Open Cluster
|
Position
| Constellation: | Cygnus |
| Magnitude: | 4.60 (V)[1] 4.66 (B)[1] |
| B-V Color (mag): | 0.06 |
| Right Ascension: | 21h31m [1] |
| Declination: | +48°26' [1] |
| Distance: | 326.0 parsec 1062.8 lightyears [1] |
Derived Quantities
| Absolute Mag (V): | -2.97 |
Source