| Designation(s) | Arp 169, NGC 7236, NGC 7237 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Galaxies with diffuse counter-tails |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Pegasus |
| Date and Time Observed | 2024-10-27 21:24:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo Mini |
| Image Details | Up is 99.1 degrees E of N. Total integration time was 23m 15s. Exposures 15s@300g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | This appears to be a string of 3 galaxy centers -- NGC 7236, 7237, and the tiny one: NGC 7237C -- that share a common envelope of stars. 7236's envelope is extended to the left, while 7237 and 7237c's extemd slightly to the right. My guess it's caused by the galaxies approaching from different directions, and with different initial motions... the far ends of each galaxy's star envelope slowed more slowly than the envelope closer to the others, causing them to stretch out. |
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