Astronomical objects discovered in 2015

only known natural satellite of the dwarf planet Makemake

Trans-Neptunian object

ASASSN-15lh (supernova designation SN 2015L) is an extremely luminous astronomical transient event discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN), with the appearance of a superluminous supernova event. It was first detected on June 14, 2015, located within a faint galaxy in the southern constellation Indus, and was the most luminous supernova-like object ever observed. At its peak, ASASSN-15lh was 570 billion times brighter than the Sun, and 20 times brighter than the combined light emitted by the Milky Way Galaxy. The emitted energy was exceeded by PS1-10adi.

galaxy

trans-Neptunian object

asteroid

Most luminous galaxy

WT1190F (9U01FF6, UDA34A3, or UW8551D) was a small temporary satellite of Earth that impacted Earth on 13 November 2015 at 06:18:21.7 (± 0.1 seconds) UTC. It is thought to have been space debris from the trans-lunar injection stage of the 1998 Lunar Prospector mission. It was first discovered on 18 February 2013 by the Catalina Sky Survey. It was then lost, and reacquired on 29 November 2013. It was again discovered on 3 October 2015 by astronomer Rose Garcia with the Catalina Sky Survey 60-inch telescope, and the object was soon identified to be the same as the two objects previously sig

trans-Neptunian object

galaxy

galaxy

nova

Trans-Neptunian object

trans-Neptunian object

Trans-Neptunian object

red dwarf star in the constellation Corvus

Milky Way satellite dwarf galaxy

comet, inner Oort cloud object, and Amor near-Earth object

trans-Neptunian object

Comet

M59-UCD3 is an ultra-compact dwarf galaxy located near the Messier 59 galaxy. , it is the second-densest galaxy currently observed, second to M85-HCC1.

asteroid

trans-Neptunian object

asteroid