| UGC 2885 | |
| Epoch: | J2000 |
| Constellation Name: | Perseus |
| Z: | 0.019353[1] |
| Dist Ly: | 71.1abbr=onNaNabbr=on[2] |
| Type: | SA(rs)c |
| Appmag V: | 13.5[3] |
| Mass: | 2 trillion[4] [5] |
| Size V: | 3.9 × 1.9 |
| Size: | 463abbr=onNaNabbr=on[6] |
| Names: | PGC 14030, CGCG 526-012, IRAS 03497+3526, MCG +06-09-012, TC 49, Z 039.8+3527[7] |
UGC 2885 (Rubin's Galaxy,[8] nicknamed "Godzilla galaxy"[9]) is a large barred spiral galaxy of type SA(rs)c in the constellation Perseus. It is 232e6ly from Earth and measures 463000lk=onNaNlk=on across, making it one of the largest known spiral galaxies.[6] [2] It is also a possible member of the Pisces-Perseus supercluster.[10]
UGC 2885 is a spiral galaxy with a relatively low surface brightness. The central bulge is the most prominent feature of this galaxy, where a faint bar crosses its center.
UGC 2885 is classified as a field galaxy - a class of galaxies found in remote, under-dense and "vacant" sections of space, far from other major galaxies. NASA has reported that the theorized main source for disk growth for UGC 2885 came from the accretion of intergalactic hydrogen gas, rather than through the repeated process of galactic collision, as most galaxies are thought to grow.
The lack of interaction is evident from the near-perfect structure of the spiral arms and disk, lack of tidal tails, and modest rate of star formation - approximately 0.5 solar masses/year.
Additionally, despite being originally classified as an unbarred spiral galaxy, new Hubble images clearly show the presence of a small bar cutting across the ring structure of the core. This is peculiar, as most bars are thought to form through minor gravitational perturbations brought on by satellite and neighboring galaxies, which is something this galaxy lacks. This galaxy highlights that bars are able to form in spiral galaxies without the influence of another galaxy - this indicates that other forces, such as interactions between stars, gas and dust, as well as the gravitational influence of dark matter, might play a role in their development.
One supernova has been observed in UGC 2885: on 17 January 2002, SN 2002F (type II, mag. 18.1) was discovered.[11] [12] [13]