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1A, 2A, 3A — Lists of X-ray sources from the Ariel V satellite [2] 1C — First Cambridge Catalogue of Radio Sources; 1ES — Einstein Slew Survey [1] [3] 1FGL, 2FGL [4] — Lists of gamma-ray sources from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope; 1RXH — ROSAT HRI Pointed Observations
7–8 July Dashu: 120° 22–23 July ... It begins when the Sun reaches the celestial longitude of 90° and ends when it reaches the ... 2020-07-06 15:14 辛丑 2021 ...
In August 2021 the International Astronomical Union decided in Resolution B3 of its XXXIst General Assembly "that as from 1 January 2022, the fundamental realization of the International Celestial Reference System (ICRS) shall comprise the Third Realization of the International Celestial Reference Frame (ICRF3) for the radio domain and the Gaia ...
Talitha Borealis in conjunction with the comet C/2020 F3 (NEOWISE) on 18 July 2020 21:30 UTC with an attitude von 17° above the north horizon of Berlin (image height = 4°). At the lower edge of the picture, a bit left from the centre there is the neighbour star Alkaphrah (Kappa Ursae Majoris respectively Talitha Australis ).
Best visible at 21:00 (9 p.m.) during the month of June. Corona Borealis is a small constellation in the Northern Celestial Hemisphere . It is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy , and remains one of the 88 modern constellations .
As of 2018, beta testing builds of version 1.7.0 are available, [16] [17] as well as the bugfix releases 1.6.2 [18] and 1.6.3, [19] which were released in 2020 and 2023 respectively. Celestia was ported to mobile devices in 2020, and it continues to receive updates and experimental beta versions. [20]
The Egyptian X is a large asterism which, like the Diamond of Virgo, is composed of a pair of equilateral triangles. Sirius (α CMa), Procyon (α CMi), and Betelgeuse (α Ori) form one to the North (Winter Triangle) while Sirius, Naos (ζ Pup), and Phakt (α Col) form another to the South. Unlike the Diamond, however, these triangles meet, not ...
The WGSN's first bulletin of July 2016 [5] included a table of the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee Working Group on Public Naming of Planets and Planetary Satellites during the 2015 NameExoWorlds campaign [6] and recognized by the ...