IC 1821
Overlaid DSS image of IC 1821, 30' x 30' with north at top and west to the right
Aladin viewer for the region around IC 1821
NPM1G +13.0098, PGC 9898
| Type | Galaxy |
|---|---|
| Magnitude | 14.3 |
| Size | 0.33' x 0.29' @ 80° |
| Right Ascension | 2h 36' 25.4" (2000) |
| Declination | 13° 46' 49" N |
| Constellation | Aries |
| Description | pF, S, gbM, dif |
| Classification | Sb? pec? |
Observing Notes
Harold Corwin
IC 1821, like IC 1817 (which see), is a double system. Unlike the other pair, Javelle probably saw only the brighter, western object. His position (from two measurements on different nights) is very close to the center of this brighter galaxy, and his description -- "Pretty faint, ill-defined, 30 to 35 arcseconds [in diameter], gradually condensed" -- is very much for a single object. In addition, the eastern galaxy is very faint indeed, probably beyond the reach of even Javelle's 30-inch refractor.
So, in this case, I've assigned the IC number to the western galaxy, and have designated the eastern object as a "companion."
Other Data Sources for IC 1821
Nearby objects for IC 1821
5 objects found within 120'
| 29 Arietis | 31 Arietis | IC 1829 |
| IC 1835 | IC 238 |
Credits...
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
A complete list of credits and sources can be found on the about page
IC 1821