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P/2016 J3 (STEREO) live position and data.
Right Ascension: 18.237958
Declination: -20.534883 (J2000) Magnitude: 32.24 (Estimated: JPL) Constellation: Sagittarius
Sun Distance: 576807422 km [ km/s]
Earth Distance: 698264674 km [ km/s]
Perihelion: 28 Sep 2025 08:15 UTC [] |
Dec:
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):
| Type | Name | Magnitude | Ar | Dec |
| Star | HIP 89751 | 0 | 18h 18m 56s | -21° 02’ 18” |
| Star | HIP 89567 | 6.811 | 18h 16m 35s | -20° 32’ 40” |
| Star | HIP 88879 | 7.7318 | 18h 08m 41s | -20° 05’ 13” |
| Star | HIP 89114 | 6.4848 | 18h 11m 14s | -19° 50’ 30” |
| Star | HIP 89262 | 8.2308 | 18h 12m 56s | -19° 44’ 42” |
| Star | HIP 89744 | 8.604 | 18h 18m 53s | -21° 27’ 39” |
| Star | HIP 89439 | 5.35 | 18h 15m 12s | -20° 43’ 41” |
| Star | HIP 89129 | 8.684 | 18h 11m 24s | -20° 42’ 44” |
| Star | HIP 89647 | 7.6002 | 18h 17m 39s | -19° 40’ 19” |
| Star | HIP 89425 | 7.7346 | 18h 15m 02s | -20° 52’ 16” |
| Star | HIP 89369 | 5.326 | 18h 14m 15s | -21° 42’ 47” |
| Star | HIP 88856 | 7.6748 | 18h 08m 28s | -21° 15’ 11” |
| Star | HIP 89029 | 8.571 | 18h 10m 14s | -21° 19’ 37” |
| Star | HIP 89341 | 3.824 | 18h 13m 45s | -21° 03’ 31” |
| Star | HIP 89440 | 5.9754 | 18h 15m 12s | -20° 23’ 16” |
| Star | HIP 89177 | 7.2182 | 18h 11m 57s | -20° 25’ 24” |
| Star | HIP 89203 | 7.1446 | 18h 12m 14s | -19° 25’ 58” |
Additional resources
Additional Resources about Comet P/2016 J3 (STEREO = 2021 A3)
- 15 Days Ephemerides
- Interactive Sky Map (Planetarium)
- Rise & Set Times
- Distance from Earth
- Light Curve
- Orbital Elements
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
Dec: ()