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C/2021 A2 live position and data

This page shows Comet C/2021 A2 location and other relevant astronomical data in real time. The celestial coordinates, magnitude, distances and speed are updated in real time and are computed using high quality data sets provided by the JPL Horizons ephemeris service (see acknowledgements for details). The sky map shown below represents a rectangular portion of the sky 60x40 arcminutes wide. By comparison the diameter of the full Moon is about 30 arcmins, so the full horizontal extent of the map is approximately 2 full Moons wide. Depending on the device you are using, the map can be dragged horizondally or vertically using the mouse or touchscreen. The deep sky image in the background is provided by the Digitized Sky Survey (acknowledgements).

Current close conjunctions

List of bright objects (stars brighter than magnitude 9.0 and galaxies brighter than magmitude 14.0) close to Comet C/2021 A2 (less than 1.5 degrees):

TypeNameMagnitudeArDec
StarHIP 1034857.91920h 58m 00s+56° 07’ 10”
StarHIP 1031417.508420h 53m 52s+56° 21’ 46”
StarHIP 1030338.540420h 52m 28s+56° 49’ 52”
StarHIP 1021837.039420h 42m 16s+57° 23’ 07”
StarHIP 1024314.47220h 45m 21s+57° 34’ 49”
StarHIP 1029838.607820h 51m 50s+56° 50’ 04”
StarHIP 1029528.048620h 51m 30s+56° 21’ 56”
StarHIP 1028587.114420h 50m 18s+56° 47’ 54”
StarHIP 1026738.3820h 48m 20s+58° 15’ 24”
StarHIP 1022586.31620h 43m 13s+57° 06’ 50”
StarHIP 1025027.54820h 46m 24s+56° 50’ 05”
StarHIP 1033807.92920h 56m 40s+56° 55’ 36”
StarHIP 1023585.780820h 44m 22s+56° 29’ 18”
StarHIP 1036858.950821h 00m 36s+56° 18’ 07”
StarHIP 1037926.693421h 01m 55s+57° 04’ 18”
StarHIP 1033178.388820h 55m 55s+58° 04’ 12”
StarHIP 1033466.222420h 56m 17s+56° 53’ 15”
StarHIP 1030507.495220h 52m 43s+56° 35’ 05”
StarHIP 1021878.028420h 42m 18s+57° 45’ 28”

Additional resources

Additional Resources about Comet C/2021 A2

Astronomy databases

This online sky chart is created using the following astronomy databases and services:

  1. The Digitized Sky Survey, a photographic survey of the whole sky created using images from different telescopes, including the Oschin Schmidt Telescope on Palomar Mountain
  2. The Hipparcos Star Catalogue, containing more than 100.000 bright stars
  3. The PGC 2003 Catalogue, containing information about 1 million galaxies
  4. The GSC 2.3 Catalogue, containing information about more than 2 billion stars and galaxies
Please see the acknowledgements section.

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