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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 1081516.935221h 54m 42s+67° 45’ 13”
StarHIP 1080277.494621h 53m 05s+68° 29’ 54”
StarHIP 1080307.295821h 53m 08s+68° 06’ 26”
StarHIP 1077106.446221h 49m 08s+66° 47’ 31”
StarHIP 1065156.824221h 34m 25s+66° 43’ 35”
StarHIP 1070048.585821h 40m 18s+68° 23’ 21”
StarHIP 1074748.43421h 46m 04s+65° 56’ 25”
StarHIP 1083878.939421h 57m 30s+67° 35’ 29”
StarHIP 1078558.401821h 51m 04s+66° 50’ 14”
StarHIP 1069668.472221h 39m 51s+68° 07’ 50”
StarHIP 1067128.25321h 36m 57s+68° 11’ 07”
StarHIP 1085837.795621h 59m 47s+67° 58’ 26”
StarHIP 1065386.889221h 34m 38s+66° 46’ 20”
StarHIP 1074268.323821h 45m 29s+67° 45’ 04”
StarHIP 1080088.849421h 52m 55s+68° 05’ 54”
StarHIP 1066046.47821h 35m 25s+68° 13’ 09”
StarHIP 1071667.93421h 42m 26s+66° 21’ 43”

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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