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):

StarHIP 89751018h 18m 56s-21° 02’ 18”
StarHIP 895676.81118h 16m 35s-20° 32’ 40”
StarHIP 888797.731818h 08m 41s-20° 05’ 13”
StarHIP 891146.484818h 11m 14s-19° 50’ 30”
StarHIP 892628.230818h 12m 56s-19° 44’ 42”
StarHIP 897448.60418h 18m 53s-21° 27’ 39”
StarHIP 894395.3518h 15m 12s-20° 43’ 41”
StarHIP 891298.68418h 11m 24s-20° 42’ 44”
StarHIP 896477.600218h 17m 39s-19° 40’ 19”
StarHIP 894257.734618h 15m 02s-20° 52’ 16”
StarHIP 893695.32618h 14m 15s-21° 42’ 47”
StarHIP 888567.674818h 08m 28s-21° 15’ 11”
StarHIP 890298.57118h 10m 14s-21° 19’ 37”
StarHIP 893413.82418h 13m 45s-21° 03’ 31”
StarHIP 894405.975418h 15m 12s-20° 23’ 16”
StarHIP 891777.218218h 11m 57s-20° 25’ 24”
StarHIP 892037.144618h 12m 14s-19° 25’ 58”

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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Dec:  ()