The open cluster M 21
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
Finder chart
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From Washington , M 21 is visible in the morning sky, becoming accessible around 03:11, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 05:32, 30° above your southern horizon. It will be lost to dawn twilight around 05:43, 30° above your southern horizon.
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|
Name
M 21
|
Object Type
Open Cluster
|
Position
| Constellation: | Sagittarius |
| Magnitude: | 5.90 (V) [5] |
| Right ascension: | 18h04m [3] |
| Declination: | -22°29' [3] |
| Distance: | 1.2 kpc 3.9 klyr [2] |
Derived Quantities
| Absolute mag (V): | -4.50 |
Sources
Visibility from Washington
All times shown in Washington local time.