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 will become visible at around 19:54 (PDT), 54° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:39.
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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 |