The Trifid Nebula (M20)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 28 arcminutes across.
From Cambridge , the Trifid Nebula is visible in the morning sky, becoming accessible around 02:58, when it reaches an altitude of 21° above your southern horizon. It will then reach its highest point in the sky at 04:19, 24° above your southern horizon. It will be lost to dawn twilight around 04:26, 24° above your southern horizon.
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Name
The Trifid Nebula (M20)
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Object type
Open cluster
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Position
| Right ascension: | 18h02m [3] |
| Declination: | -22°58' [3] |
| Constellation: | Sagittarius |
| Magnitude: | 6.30 (V) [4] 6.30 (B) [3] |
| Distance: | 816.0 parsec 2660.2 lightyrs [2] |
| B-V Color (mag): | -2.20 |
Derived quantities
| Absolute mag (V): | -3.26 |
Sources