We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
Comets » 

Comet C/2020 J1 (SONEAR)

Altitude: 47.5°   Azimuth: 71.0°   Direction: East-North-East

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 29m 57s and the Declination is +45° 33’ 00” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current estimated magnitude of Comet C/2020 J1 (SONEAR) is 19.46 (JPL).

11h 29m 57s
+45° 33’ 00”
Ursa Major

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

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

Today Comet C/2020 J1 (SONEAR) is circumpolar and transits at 06:50 UTC reaching a maximum altitude of 84.1°.
  • C/2020 J1 (SONEAR) is above the horizon from Greenwich, United Kingdom edit_location_alt.
  • Right now it is placed in the East-North-East direction at an altitude of 47° above the horizon.
  • Given its current magnitude, C/2020 J1 (SONEAR) is visible only through long exposure photography.
  • 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.

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.

Finder chart of C/2020 J1 (SONEAR) in Ursa Major on December,01 2023
Map showing Comet C/2020 J1 (SONEAR) in Ursa Major on December, 01 2023
Field of view: 50x30 degrees
View fullscreen
Finder chart of C/2020 J1 (SONEAR)
Map showing Comet C/2020 J1 (SONEAR) in Ursa Major on December, 01 2023
Field of view: 10x6 degrees
View fullscreen

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 29m 57s
Dec: +45° 33’ 00”
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 1,261,745,376 kilometers, equivalent to 8.434247 Astronomical Units. Light takes 1 hours, 10 minutes and 8.7295 seconds to travel from Comet C/2020 J1 (SONEAR) and arrive to us.

1 hours, 10 minutes and 8.7295 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.

Chart of the distance of Comet C/2020 J1 (SONEAR) from Earth in Astronomical Units (au)

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 1 January 2013 and 30 December 2100, the closest approach of Comet C/2020 J1 (SONEAR) to Earth happens on Mon May 17 2021 at a distance of 2.365787 Astronomical Units, or 353,916,701 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 and Light Curve

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.

Chart of the magnitude of Comet C/2020 J1 (SONEAR) as a function of time

Comet C/2020 J1 (SONEAR) Orbital Elements

The following table lists the orbital elements of Comet C/2020 J1 (SONEAR) at epoch 13 October 2021 00:00 UTC (JD: 2459501.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00033316
Orbit inclination i 142.29530545°
Perihelion distance q 3.35516120 AU
501,924,972 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 14:29:54
2,459,323.1041 JD
Argument of perihelion peri 341.75540006913°
Longitude of the ascending node node 226.58268154202°
Mean anomaly M 0.00017397649330717°
Mean motion n 0.00000098°/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
2023 Nov 24 11h 29m 58s +44° 54’ 25” 19.46 Ursa Major
2023 Nov 25 11h 30m 00s +44° 59’ 39” 19.46 Ursa Major
2023 Nov 26 11h 30m 02s +45° 04’ 57” 19.46 Ursa Major
2023 Nov 27 11h 30m 02s +45° 10’ 18” 19.46 Ursa Major
2023 Nov 28 11h 30m 02s +45° 15’ 45” 19.46 Ursa Major
2023 Nov 29 11h 30m 01s +45° 21’ 15” 19.46 Ursa Major
2023 Nov 30 11h 30m 00s +45° 26’ 48” 19.46 Ursa Major
2023 Dec 01 11h 29m 57s +45° 32’ 26” 19.46 Ursa Major
2023 Dec 02 11h 29m 54s +45° 38’ 08” 19.46 Ursa Major
2023 Dec 03 11h 29m 52s +45° 43’ 54” 19.46 Ursa Major
2023 Dec 04 11h 29m 48s +45° 49’ 44” 19.46 Ursa Major
2023 Dec 05 11h 29m 43s +45° 55’ 36” 19.46 Ursa Major
2023 Dec 06 11h 29m 38s +46° 01’ 32” 19.46 Ursa Major
2023 Dec 07 11h 29m 31s +46° 07’ 33” 19.47 Ursa Major