E Nebula
(Redirected from LDN 688)
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| Dark nebula | |
|---|---|
 Barnard's "E" Nebula (B142, 143) | |
| Observation data: J2000.0 epoch | |
| Right ascension | 19h 40m 42s |
| Declination | +10° 57′ |
| Distance | 2000 ly (613 pc) |
| Apparent magnitude (V) | – |
| Apparent dimensions (V) | 30 arcmins |
| Constellation | Aquila |
| Physical characteristics | |
| Absolute magnitude (V) | – |
| Notable features | – |
| Designations | Barnard 142, 143 |
The "E" or "Barnard's E" Nebula (officially designated as Barnard 142 and 143) is a pair of dark nebulae in the Aquila constellation. It is a well-defined dark area on a background of Milky Way consisting of countless stars of all magnitudes, getting its name from its resemblance to the letter E in the Latin alphabet.[1] Its size is about that of the full moon, or roughly 0.5 degrees, and its distance from earth is estimated at 2,000 light years.
External links
[edit]- ^ Armstrong, Mark (21 August 2023). "Capitalise on Barnard's giant 'E' in the sky". Astronomy Now. Retrieved 10 October 2023.
- The E Nebula on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- E. E. Barnard's Catalog of Dark Nebulae