NGC 2857 (also known as Arp 1 and PGC 26666) is a spiral galaxy in the constellation Ursa Major. It was discovered on January 9, 1856, by R. J. Mitchell. [1] NGC 2857 is the first object in Halton Arp's Atlas of Peculiar Galaxies, and one of six Arp objects in the 'Low Surface Brightness Galaxies' section.

NGC 2857是 赫顿·阿普 的 特殊星系图集 中的第一个天体，也是六个“低表面亮度星系”阿普天体之一，另外五个低表面亮度星是阿普2（UGC 10310）、阿普3、阿普4、阿普5（NGC 3664）和阿普6（NGC 2537） [4]。 ^ 1.0 1.1 1.2 Seligman, Courtney. New General Catalog Objects: NGC 2850 - 2899. [2015-11-29]. ^ 2.0 2.1 2.2 2.3 SIMBAD Astronomical Database. Results for NGC 2857. [2015-11-29].

The galaxy NGC 2857 is located in the constellation Ursa Maior. The best viewing time is January to December when this circumpolar constellation is highest at night.

NGC 2857 Spiral galaxy in Ursa Major (Arp's Spiral, Arp 1) also NGC 2856 & 2854 (Arp 285) Date: March 3-4, 2019: Exposure: LRGB 180:60:60:60 (6 hours, cropped) Camera: STL11000M with AstroDon Gen II filters : Telescope: ASA 10N f/3.7 on AP900GTO CP3: Guiding: Remote guide head with MiniBorg 50 mm:

ngc 2857 是位于 大熊座 的一个 星系 。它的 赤经 为 924.5， 赤纬 为 49° 21′，大小 2.4′。

NGC 2857 is an Active Galactic Nuclei/Nucleus located in the constellation of Ursa Major in the northern hemisphere. NGC 2857's distance from Earth is 172,644,355.40 light years. NGC 2857 is called NGC 2857 in the New General Catalogue (NGC).

This rarely imaged wonder is the first object in Halton Arp's Atlas of Peculiar Galaxies. Distance estimates of about 65 to 230 million light-years (with a median estimate of about 220 million light-...

The Image Index is a system based on likes received on images, that incentivizes the most active and liked members of the community. Learn more. Contribution Index (beta) is system to reward informative, constructive, and valuable commentary on AstroBin.

NGC 2857是 赫頓·阿普 的 特殊星系圖集 中的第一個天體，也是六個「低表面亮度星系」阿普天體之一，另外五個低表面亮度星是阿普2（UGC 10310）、阿普3、阿普4、阿普5（NGC 3664）和阿普6（NGC 2537） [4]。 ^ 1.0 1.1 1.2 Seligman, Courtney. New General Catalog Objects: NGC 2850 - 2899. [2015-11-29]. （原始內容 存檔 於2016-03-05）. ^ 2.0 2.1 2.2 2.3 SIMBAD Astronomical Database. Results for NGC 2857. [2015-11-29]. （原始內容 存檔 於2019-05-30）.

2020年12月26日 · NGC 2857 and Arp 285 with C11 EdgeHD - posted in Experienced Deep Sky Imaging: Hi all, Here is a nice triplet made of the couple NGC 2854 and NGC 2856 (two interacting galaxies also referenced in the ARP catalog under the number 285) and the nice small spiral NGC 2857.