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🌎  Greenwich, United Kingdom [change]

Comet C/2020 J1 (SONEAR)

Comet C/2020 J1 (SONEAR) is currently in the constellation of Ursa Major. The current Right Ascension of Comet C/2020 J1 (SONEAR) is 11h 59m 55s and the Declination is +30° 48’ 41” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2020 J1 (SONEAR) is 16.93 (JPL).

Summary of key facts about Comet C/2020 J1 (SONEAR) [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]:

11h 59m 55s
+30° 48’ 41”
Ursa Major
  • C/2020 J1 (SONEAR) is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-East direction at an altitude of 66° above the horizon.
  • Given its current magnitude, C/2020 J1 (SONEAR) is visible only through long exposure photography.
  • See also C/2020 J1 (SONEAR) rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Comet C/2020 J1 (SONEAR) available on TheSkyLive:

Available Resources

Comet C/2020 J1 (SONEAR) Position and Finder Charts

Below we provide Comet C/2020 J1 (SONEAR) 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 C/2020 J1 (SONEAR) in Ursa Major on July, 07 2022
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2020 J1 (SONEAR) in Ursa Major on July, 07 2022
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 C/2020 J1 (SONEAR) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2020 J1 (SONEAR)
RA: 11h 59m 55s
Dec: +30° 48’ 41”
Deep sky finder chart for Comet C/2020 J1 (SONEAR)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2020 J1 (SONEAR)?, a page that provides all the information needed to find Comet C/2020 J1 (SONEAR) in the sky and additional links to sky charts.

Comet C/2020 J1 (SONEAR) Distance from Earth

The distance of Comet C/2020 J1 (SONEAR) from Earth is currently 831,578,385 kilometers, equivalent to 5.558758 Astronomical Units. Light takes 46 minutes and 13.8469 seconds to travel from Comet C/2020 J1 (SONEAR) and arrive to us.

46 minutes and 13.8469 seconds

The following chart shows the distance of Comet C/2020 J1 (SONEAR) 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 C/2020 J1 (SONEAR) 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 C/2020 J1 (SONEAR) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2020 J1 (SONEAR) to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2020 J1 (SONEAR) to Earth happens on Mon May 17 2021 at a distance of 2.365785 Astronomical Units, or 353,916,352 kilometers:

Mon May 17 2021

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

Comet C/2020 J1 (SONEAR) brightness

The current visual magnitude of Comet C/2020 J1 (SONEAR) is 16.93.


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 C/2020 J1 (SONEAR), 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 C/2020 J1 (SONEAR) between January 2013 and December 2100

Comet C/2020 J1 (SONEAR) rise and set times

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

Today's Comet C/2020 J1 (SONEAR) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.2°
Max altitude: 69.3°
Azimuth: 300.8°

The rise and set times are defined as the time at which the upper limb of Comet C/2020 J1 (SONEAR) 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 C/2020 J1 (SONEAR) Orbital Elements

The following table lists the orbital elements of Comet C/2020 J1 (SONEAR) at epoch 27 September 2021 00:00 UTC (JD: 2459485.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00028540
Orbit inclination i 142.29501475°
Perihelion distance q 3.35515627 AU
501,924,235 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2021-Apr-18 14:25:46
2,459,323.1012 JD
Argument of perihelion peri 341.75495293794°
Longitude of the ascending node node 226.58249608823°
Mean anomaly M 0.00012557167960144°
Mean motion n 0.00000077°/day

Visualization of Comet C/2020 J1 (SONEAR) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2020 J1 (SONEAR) with respect of the Sun and the orbits of the major planets. The position of Comet C/2020 J1 (SONEAR) 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 C/2020 J1 (SONEAR)
View Comet C/2020 J1 (SONEAR) in the 3D Solar System Simulator

Comet C/2020 J1 (SONEAR) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2020 J1 (SONEAR) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2020 J1 (SONEAR) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Jun 30 12h 00m 33s +31° 07’ 29” 16.84 Ursa Major
2022 Jul 01 12h 00m 25s +31° 05’ 08” 16.85 Ursa Major
2022 Jul 02 12h 00m 20s +31° 02’ 44” 16.86 Ursa Major
2022 Jul 03 12h 00m 12s +31° 00’ 17” 16.87 Ursa Major
2022 Jul 04 12h 00m 07s +30° 57’ 51” 16.89 Ursa Major
2022 Jul 05 12h 00m 03s +30° 55’ 23” 16.90 Ursa Major
2022 Jul 06 12h 00m 00s +30° 52’ 53” 16.91 Ursa Major
2022 Jul 07 11h 59m 57s +30° 50’ 21” 16.92 Ursa Major
2022 Jul 08 11h 59m 54s +30° 47’ 50” 16.93 Ursa Major
2022 Jul 09 11h 59m 53s +30° 45’ 17” 16.94 Ursa Major
2022 Jul 10 11h 59m 52s +30° 42’ 44” 16.95 Ursa Major
2022 Jul 11 11h 59m 52s +30° 40’ 10” 16.96 Ursa Major
2022 Jul 12 11h 59m 53s +30° 37’ 36” 16.98 Ursa Major
2022 Jul 13 11h 59m 53s +30° 35’ 02” 16.99 Ursa Major