Arp 302

{{Short description|Galaxy in the constellation Boötes}}

{{Infobox Galaxy

| name =Arp 302

| image = File:UGC 9618, Chandra + Hubble.jpg

| caption = Arp 302 consists of a pair of very gas-rich spiral galaxies in their early stages of interaction: VV 340A is seen edge-on at top, and VV 340B face-on below. Composite image of X-ray data from Chandra (purple) and optical data from Hubble (red, green, blue).

| epoch = J2000

| type = S+S

| ra = {{RA|14|56|54}}

| dec = {{DEC|+24|36.0|00}}

| dist_ly = 450 Mly (150 Mpc)

| z = 0.034505
(10166 km/s)

| appmag_v = 11.3 (15.3 + 15.7)

| size_v = 1.6{{prime}} (0.6{{prime}} × 0.6{{prime}} / 0.9{{prime}} × 0.3{{prime}})

| constellation name = Boötes

| notes =

| names =VV 340, IRAS 14547+2448, CGCG 1454.7+2448, APG 302, KPG 446, CGCG 134-58, IRAS F14547+2449, Arp 302, LEDA 53433 / 53432, 2MASX J14570030+2436246 / J14570066+2437026, MCG+04-35-018 / +04-35-019, UGC 9618

}}

Arp 302 (also known as Exclamation Point Galaxy) is a galaxy in the constellation Boötes. Arp 302, also known as VV 340 or UGC 9618 consists of a pair of very gas-rich spiral galaxies in their early stages of interaction. An enormous amount of infrared light is radiated by the gas from massive stars that are forming at a rate similar to the most vigorous giant star-forming regions in our own Milky Way. Arp 302 is 450 million light-years away from Earth, and is the 302nd galaxy in Arp's Atlas of Peculiar Galaxies.