The Little Gem (NGC6818)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
From Cambridge , the Little Gem is visible in the dawn sky, rising at 02:30 (EDT) – 3 hours and 51 minutes before the Sun – and reaching an altitude of 24° above the south-eastern horizon before fading from view as dawn breaks at around 05:13.
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Name
The Little Gem (NGC6818)
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Object type
Planetary nebula
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Position
| Right ascension: | 19h43m [1] |
| Declination: | −14°09' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 9.30 (V) [1] 9.90 (B) [1] 10.66 (J) [1] 10.60 (H) [1] 9.91 (K) [1] |
| Distance: | 2.2 kpc 7.2 klyr [2] |
| B-V Color (mag): | 0.60 |
Derived quantities
| Absolute mag (V): | -2.41 |
Sources