| Designation(s) | Arp 176, NGC 4933 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Galaxies with narrow counter-tails |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Date and Time Observed | 2024-04-16 23:55:00 |
| Instrument | EdgeHD 8" f10-2,032mm FL |
| Camera | ASI294mc-Pro |
| Image Details | Up is 274.7 degrees E of N; comparison image, Up is 90 degrees E of N. Total integration time was 39m. Exposures 30s@305g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding.. |
| Description | This is a tiny cluster of 3 galaxies: NGC 4933 A/B/C. B is the tail galaxy which appears to be a small elliptical galaxy.. A is the middle, larger, spiral galaxy. C is the dim triangular nub ENE of A. The two brighter galaxies are Magnitude 13, and clearly interacting. C is magnitude 18.5 and does not seem to be interacting with the others. Arp remarks that "Companion galaxy very condensed." Assuming A is an elliptical galaxy, I interpret the remark as applying to the narrowness of the plume as it extends past the A's core, which accounts for the "narrow counter-tail". |
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