Category
page 1Astronomical objects discovered in 2021
C/2021 A1 (Leonard)
hyperbolic comet
S/2019 S 1
moon of Saturn
S/2003 J 24
Jovian moon
J0313-1806
astronomical object in the constellation Eridanus
S/2021 N 1
moon of Neptune
Giant Arc
arrangement consists of galaxies, galactic clusters, and lots of gas and dust
2021 PH27
near-Earth asteroid of the Atira group
2021 RR205
extreme trans-Neptunian object
Q89616655
Stellar system
PJ352-15
PSO J352.4034–15.3373, or PJ352-15, is a quasar with an astrophysical jet ascribed to a billion-solar-mass supermassive black hole. It is one of the brightest objects so far discovered. Its discovery, using the Chandra X-Ray Observatory, was reported in March 2021. At 12.7 billion light years from Earth, the X-ray jet became an observational distance record at the time of its discovery.
Q112659500
nova in the constellation Hercules
2021 LL37
asteroid
ZTF J1901+1458
white dwarf