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🌎 Location: Greenwich, United Kingdom [change]

Comet C/2020 K3 (Leonard)

Comet C/2020 K3 (Leonard) is currently in the constellation of Serpens. The current Right Ascension of Comet C/2020 K3 (Leonard) is 16h 05m 14s and the Declination is -03° 15’ 16” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2020 K3 (Leonard) is 24.49 (JPL).

Summary of key facts about Comet C/2020 K3 (Leonard) [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]:

16h 05m 14s
-03° 15’ 16”

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Additional information about Comet C/2020 K3 (Leonard) available on TheSkyLive:

Available Resources

Comet C/2020 K3 (Leonard) Position and Finder Charts

Below we provide Comet C/2020 K3 (Leonard) 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 K3 (Leonard) in Serpens on January, 19 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2020 K3 (Leonard) in Serpens on January, 19 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 C/2020 K3 (Leonard) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2020 K3 (Leonard)
RA: 16h 05m 14s
Dec: -03° 15’ 16”
Deep sky finder chart for Comet C/2020 K3 (Leonard)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2020 K3 (Leonard)?, a page that provides all the information needed to find Comet C/2020 K3 (Leonard) in the sky and additional links to sky charts.

Comet C/2020 K3 (Leonard) Distance from Earth

The distance of Comet C/2020 K3 (Leonard) from Earth is currently 549,192,654 kilometers, equivalent to 3.671126 Astronomical Units. Light takes 30 minutes and 31.9095 seconds to travel from Comet C/2020 K3 (Leonard) and arrive to us.

30 minutes and 31.9095 seconds

The following chart shows the distance of Comet C/2020 K3 (Leonard) 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 K3 (Leonard) 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 K3 (Leonard) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2020 K3 (Leonard) to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2020 K3 (Leonard) to Earth happens on Sun Jul 12 2020 at a distance of 1.328107 Astronomical Units, or 198,681,939 kilometers:

Sun Jul 12 2020

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

Comet C/2020 K3 (Leonard) brightness

The current visual magnitude of Comet C/2020 K3 (Leonard) is 24.49.


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 K3 (Leonard), 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 K3 (Leonard) between January 2013 and December 2100

Comet C/2020 K3 (Leonard) 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 K3 (Leonard) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 93.2°
Max altitude: 35.3°
Azimuth: 266.8°

The rise and set times are defined as the time at which the upper limb of Comet C/2020 K3 (Leonard) 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 K3 (Leonard) Orbital Elements

The following table lists the orbital elements of Comet C/2020 K3 (Leonard) at epoch 07 June 2020 00:00 UTC (JD: 2459008.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99242187
Orbit inclination i 128.71544384°
Perihelion distance q 1.59344601 AU
238,376,130 km
Aphelion distance Q 418.94437792 AU
62,673,187,004 km
Semi-major axis a 210.26891196 AU
31,455,781,567 km
Orbital period period 3,049.0900 years
1,113,681.5581 days
Date of perihelion transit Tp 2020-May-30 02:55:42
2,458,999.6220 JD
Next perihelion transit 5069-Jul-26 16:19
3,572,681.1801 JD
Argument of perihelion peri 62.697774616883°
Longitude of the ascending node node 27.927766949045°
Mean anomaly M 0.0028698271069377°
Mean motion n 0.00032325°/day

Visualization of Comet C/2020 K3 (Leonard) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2020 K3 (Leonard) with respect of the Sun and the orbits of the major planets. The position of Comet C/2020 K3 (Leonard) 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 K3 (Leonard)
View Comet C/2020 K3 (Leonard) in the 3D Solar System Simulator

Comet C/2020 K3 (Leonard) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2020 K3 (Leonard) 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 K3 (Leonard) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 12 16h 04m 59s -03° 01’ 46” 24.39 Serpens
2021 Jan 13 16h 05m 03s -03° 03’ 47” 24.40 Serpens
2021 Jan 14 16h 05m 08s -03° 05’ 43” 24.41 Serpens
2021 Jan 15 16h 05m 11s -03° 07’ 32” 24.43 Serpens
2021 Jan 16 16h 05m 12s -03° 09’ 16” 24.44 Serpens
2021 Jan 17 16h 05m 14s -03° 10’ 55” 24.45 Serpens
2021 Jan 18 16h 05m 14s -03° 12’ 30” 24.46 Serpens
2021 Jan 19 16h 05m 14s -03° 13’ 59” 24.48 Serpens
2021 Jan 20 16h 05m 13s -03° 15’ 24” 24.49 Serpens
2021 Jan 21 16h 05m 12s -03° 16’ 42” 24.50 Serpens
2021 Jan 22 16h 05m 08s -03° 17’ 57” 24.51 Serpens
2021 Jan 23 16h 05m 03s -03° 19’ 05” 24.53 Serpens
2021 Jan 24 16h 04m 59s -03° 20’ 09” 24.54 Serpens
2021 Jan 25 16h 04m 53s -03° 21’ 10” 24.55 Serpens