LDN 557 (Dark nebula)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 25 arcminutes across.
From South El Monte , LDN 557 is visible from soon after it rises, at 06:38, until soon before it sets at 18:33. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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Name
LDN 557
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Object type
Dark nebula
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Position
| Right ascension: | 18h38m [1] |
| Declination: | −01°47' [1] |
| Constellation: | Serpens Cauda |
| Angular dimensions: | 25.5 arcmin |