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Comet P/2016 J3 (STEREO)

Comet P/2016 J3 (STEREO) is currently in the constellation of Lupus. The current Right Ascension of Comet P/2016 J3 (STEREO) is 15h 39m 00s and the Declination is -39° 48’ 01” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet P/2016 J3 (STEREO) is 21.38 (JPL).

Summary of key facts about Comet P/2016 J3 (STEREO) [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

15h 39m 00s
-39° 48’ 01”

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Additional information about Comet P/2016 J3 (STEREO) available on TheSkyLive:

Available Resources

Comet P/2016 J3 (STEREO) Position and Finder Charts

Below we provide Comet P/2016 J3 (STEREO) finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet P/2016 J3 (STEREO) in Lupus on May, 12 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet P/2016 J3 (STEREO) in Lupus on May, 12 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet P/2016 J3 (STEREO) is right now. Click on the image to see a more detailed fullscreen tracker view.

P/2016 J3 (STEREO)
RA: 15h 39m 00s
Dec: -39° 48’ 01”
Deep sky finder chart for Comet P/2016 J3 (STEREO)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet P/2016 J3 (STEREO)?, a page that provides all the information needed to find Comet P/2016 J3 (STEREO) in the sky and additional links to sky charts.

Comet P/2016 J3 (STEREO) Distance from Earth

The distance of Comet P/2016 J3 (STEREO) from Earth is currently 126,687,007 kilometers, equivalent to 0.846850 Astronomical Units. Light takes 7 minutes and 2.5824 seconds to travel from Comet P/2016 J3 (STEREO) and arrive to us.

7 minutes and 2.5824 seconds

The following chart shows the distance of Comet P/2016 J3 (STEREO) from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Comet P/2016 J3 (STEREO) from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of P/2016 J3 (STEREO) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet P/2016 J3 (STEREO) to Earth

Between January 2013 and December 2100, the closest approach of Comet P/2016 J3 (STEREO) to Earth happens on Thu Nov 17 2072 at a distance of 0.350467 Astronomical Units, or 52,429,080 kilometers:

Thu Nov 17 2072

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet P/2016 J3 (STEREO) brightness

The current visual magnitude of Comet P/2016 J3 (STEREO) is 21.38.


The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet P/2016 J3 (STEREO), according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Comet P/2016 J3 (STEREO) between January 2013 and December 2100

Comet P/2016 J3 (STEREO) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Comet P/2016 J3 (STEREO) is currently not visible from Greenwich, United Kingdom [change]

The rise and set times are defined as the time at which the upper limb of Comet P/2016 J3 (STEREO) touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet P/2016 J3 (STEREO) Orbital Elements

The following table lists the orbital elements of Comet P/2016 J3 (STEREO) at epoch 13 January 2021 00:00 UTC (JD: 2459228.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.81169143
Orbit inclination i 23.38406036°
Perihelion distance q 0.52636420 AU
78,742,963 km
Aphelion distance Q 5.06407920 AU
757,575,466 km
Semi-major axis a 2.79522170 AU
418,159,215 km
Orbital period period 4.6700 years
1,706.9579 days
Date of perihelion transit Tp 2021-Jan-25 09:16:09
2,459,239.8862 JD
Next perihelion transit 2025-Sep-28 08:15
2,460,946.8441 JD
Argument of perihelion peri 210.73647687976°
Longitude of the ascending node node 257.78860525607°
Mean anomaly M 357.59862813385°
Mean motion n 0.21090151°/day

Visualization of Comet P/2016 J3 (STEREO) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet P/2016 J3 (STEREO) with respect of the Sun and the orbits of the major planets. The position of Comet P/2016 J3 (STEREO) and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Comet P/2016 J3 (STEREO)
View Comet P/2016 J3 (STEREO) in the 3D Solar System Simulator

Comet P/2016 J3 (STEREO) 15 Days Ephemeris

The following table lists the ephemerides of Comet P/2016 J3 (STEREO) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet P/2016 J3 (STEREO) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 May 05 16h 02m 39s -43° 13’ 03” 20.75 Norma
2021 May 06 15h 59m 17s -42° 46’ 55” 20.83 Norma
2021 May 07 15h 55m 59s -42° 20’ 27” 20.92 Lupus
2021 May 08 15h 52m 45s -41° 53’ 39” 21.00 Lupus
2021 May 09 15h 49m 36s -41° 26’ 35” 21.08 Lupus
2021 May 10 15h 46m 32s -40° 59’ 18” 21.16 Lupus
2021 May 11 15h 43m 32s -40° 31’ 50” 21.25 Lupus
2021 May 12 15h 40m 40s -40° 04’ 14” 21.33 Lupus
2021 May 13 15h 37m 50s -39° 36’ 33” 21.41 Lupus
2021 May 14 15h 35m 07s -39° 08’ 51” 21.49 Lupus
2021 May 15 15h 32m 29s -38° 41’ 07” 21.58 Lupus
2021 May 16 15h 29m 56s -38° 13’ 27” 21.66 Lupus
2021 May 17 15h 27m 28s -37° 45’ 51” 21.74 Lupus
2021 May 18 15h 25m 05s -37° 18’ 24” 21.82 Lupus