Arp 300 / UGC 05028 / UGC 05029
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp |
| Arp Category | Unclassified double galaxies |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Ursa Major |
| Date and Time Observed | 2026-03-27 23:55:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 83.7 degrees E of N. Transparency: Good. Seeing: Poor. Total integration time was 1hr 7m. Exposures 20s@225g, No Filter. Dithered and recentered in SharpCap. No guiding. |
| Description | Arp 300 consists of two interacting galaxies, UGC 05028 (the smaller face-on spiral galaxy) and UGC 05029 (the larger face-on spiral). UGC refers to the Uppsala General Catalog of Galaxies, about 12,000 targets identified in the Palomar Sky Survey completed in 1958. Both of these objects were too faint to be included in NGC or IC which were identified prior to WWI, and as early as the 18th century, optically, in the case of NGC. Arp's remarks are even more cryptic than usual: "Position between pair. Note elongated feature pointing toward nucleus of larger spiral." I'm not at all clear about the meaning of the first sentence. The second presumably refers to the little flip curl at the top right of Arp's image of UGC 05029. It's barely evident in my image, and almost equally obscure in the Hubble Telescope image included in gallery. The small, edge-on spiral to the lower right represents another enigmatic detail, but is almost certainly a background galaxy rather than a companion. |
| Catalog Links | All Listings |
