The open cluster M 21
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
Finder chart
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom.
Click to enlarge.
From Fairfield , M 21 is visible between 00:27 and 03:59. It will become accessible around 00:27, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 02:13, 26° above your southern horizon. It will become inaccessible around 03:59 when it sinks below 21° above your south-western horizon.
Begin typing the name of a town near to you, and then select the town from the list of options
which appear below.
|
Name
M 21
|
Object Type
Open Cluster
|
Position
| Constellation: | Sagittarius |
| Magnitude: | 5.90 (V) [3] |
| Right ascension: | 18h04m [2] |
| Declination: | -22°29' [2] |
| Distance: | 1.2 kpc 3.9 klyr [1] |
Derived Quantities
| Absolute mag (V): | -4.50 |