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P/2016 J3 (STEREO) live position and data

This page shows Comet P/2016 J3 (STEREO = 2021 A3) 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 P/2016 J3 (STEREO = 2021 A3) (less than 1.5 degrees):

TypeNameMagnitudeArDec
StarHIP 951257.612419h 21m 05s-52° 43’ 22”
StarHIP 952808.964619h 23m 03s-53° 39’ 17”
StarHIP 961415.730619h 32m 53s-53° 11’ 08”
StarHIP 953608.44519h 24m 02s-53° 19’ 34”
StarHIP 960568.342419h 31m 51s-53° 21’ 37”
StarHIP 958018.734619h 29m 11s-53° 05’ 46”
StarHIP 958488.945619h 29m 37s-52° 37’ 24”
StarHIP 954686.750619h 25m 09s-51° 06’ 02”
StarHIP 958817.837219h 30m 01s-53° 37’ 06”
StarHIP 962677.942619h 34m 28s-52° 16’ 10”
StarHIP 954308.072819h 24m 43s-51° 47’ 26”
StarHIP 956717.979619h 27m 35s-52° 35’ 54”
StarHIP 960358.021819h 31m 36s-53° 15’ 27”
StarHIP 963996.644819h 35m 57s-53° 00’ 28”
StarHIP 956428.448619h 27m 16s-51° 27’ 42”
StarHIP 963267.891619h 35m 05s-53° 31’ 15”
StarHIP 963588.19919h 35m 30s-53° 07’ 10”
GalaxyESO 232-214.019h 22m 35s-51° 36’ 07”
GalaxyESO 232-613.919h 24m 27s-51° 57’ 37”

Additional resources

Additional Resources about Comet P/2016 J3 (STEREO = 2021 A3)

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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