Object: P/2016 J3 (STEREO) (open sky map)

RA 01h 32m 12s Dec +35° 14’ 25” Appar J2000

Mag: 24.56 (Estimated: JPL) Const: Andromeda

Sun Dist: 227225050.31406 km [ km/s]
Earth Dist: 224067401.50643 km [ km/s]
Perihelion: 28 Sep 2025 08:21 UTC []

RA:
Dec:

P/2016 J3 (STEREO) Live Position Tracker

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 in the background 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):

Type	Name	Magnitude	Ar	Dec
Star	HIP 6636	7.5468	01h 25m 08s	+35° 43’ 59”
Star	HIP 7622	7.4758	01h 38m 11s	+35° 20’ 21”
Star	HIP 6776	6.22	01h 27m 06s	+34° 22’ 39”
Star	HIP 7344	7.0996	01h 34m 37s	+35° 06’ 42”
Star	HIP 7147	6.3798	01h 32m 07s	+34° 47’ 59”
Star	HIP 7490	8.2504	01h 36m 25s	+35° 08’ 02”
Star	HIP 7501	8.1682	01h 36m 40s	+35° 36’ 58”
Star	HIP 6702	6.2946	01h 26m 08s	+34° 34’ 47”
Star	HIP 7289	6.8116	01h 33m 54s	+35° 36’ 29”
Star	HIP 7051	8.2496	01h 30m 53s	+34° 10’ 26”
Star	HIP 6817	8.7064	01h 27m 42s	+35° 24’ 06”
Star	HIP 7216	7.6028	01h 32m 57s	+33° 51’ 10”
Star	HIP 7314	7.915	01h 34m 11s	+36° 11’ 24”
Star	HIP 6767	7.9956	01h 27m 02s	+34° 38’ 20”
Star	HIP 7201	6.4914	01h 32m 47s	+35° 50’ 34”
Star	HIP 6908	8.5926	01h 28m 56s	+34° 55’ 01”
Galaxy	NGC 587	13.6	01h 32m 33s	+35° 21’ 32”
Galaxy	NGC 529	13.2	01h 25m 40s	+34° 42’ 47”
Galaxy	NGC 536	13.2	01h 26m 21s	+34° 42’ 14”
Galaxy	NGC 621	13.8	01h 36m 48s	+35° 30’ 45”
Galaxy	NGC 561	13.9	01h 28m 18s	+34° 18’ 30”
Galaxy	NGC 591	13.9	01h 33m 31s	+35° 40’ 06”
Galaxy	NGC 634	13.9	01h 38m 18s	+35° 21’ 55”

Additional resources

Astronomy databases

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

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
The Hipparcos Star Catalogue, containing more than 100.000 bright stars
The PGC 2003 Catalogue, containing information about 1 million galaxies
The GSC 2.3 Catalogue, containing information about more than 2 billion stars and galaxies

Please see the acknowledgements section.

RA: ()
Dec: ()

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P/2016 J3 (STEREO) Live Position Tracker

Current close conjunctions

Additional resources

Astronomy databases

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