The globular cluster NGC 6638
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
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From Seattle , NGC 6638 is not readily observable since it lies so far south that it will never rise more than 16° above the horizon.
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|
Name
NGC 6638
|
Object Type
Globular Cluster
|
Position
| Constellation: | Sagittarius |
| Magnitude: | 9.68 (V) [2] 10.81 (B) [2] |
| B-V Color (mag): | 1.13 |
| Right ascension: | 18h30m [2] |
| Declination: | -25°29' [2] |
| Distance: | 9.6 kpc 31.3 klyr [1] |
Derived Quantities
| Absolute mag (V): | -5.23 |