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):

StarHIP 259736.404805h 32m 33s+57° 13’ 17”
StarHIP 254748.096605h 26m 51s+57° 28’ 13”
StarHIP 264618.87705h 37m 44s+58° 22’ 07”
StarHIP 264267.368405h 37m 27s+56° 29’ 16”
StarHIP 261478.285805h 34m 28s+57° 51’ 33”
StarHIP 261148.257405h 34m 09s+56° 52’ 32”
StarHIP 264558.536405h 37m 40s+58° 32’ 57”
StarHIP 256208.14705h 28m 24s+58° 40’ 30”
StarHIP 251975.241805h 23m 27s+57° 32’ 40”

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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