Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Comet C/2019 K4

Comet C/2019 K4 is currently in the constellation of Tucana. The current Right Ascension of Comet C/2019 K4 is 23h 48m 39s and the Declination is -66° 48’ 11” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2019 K4 is 23.19 (JPL).

Summary of key facts about Comet C/2019 K4 [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]:

23h 48m 39s
-66° 48’ 11”

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/2019 K4 available on TheSkyLive:

Available Resources

Comet C/2019 K4 Position and Finder Charts

Below we provide Comet C/2019 K4 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/2019 K4 in Tucana on December, 03 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2019 K4 in Tucana on December, 03 2020
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/2019 K4 is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2019 K4
RA: 23h 48m 39s
Dec: -66° 48’ 11”
Deep sky finder chart for Comet C/2019 K4
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2019 K4?, a page that provides all the information needed to find Comet C/2019 K4 in the sky and additional links to sky charts.

Comet C/2019 K4 Distance from Earth

The distance of Comet C/2019 K4 from Earth is currently 894,796,486 kilometers, equivalent to 5.981345 Astronomical Units. Light takes 49 minutes and 44.7198 seconds to travel from Comet C/2019 K4 and arrive to us.

49 minutes and 44.7198 seconds

The following chart shows the distance of Comet C/2019 K4 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/2019 K4 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/2019 K4 from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2019 K4 to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2019 K4 to Earth happens on Tue Sep 17 2019 at a distance of 1.506915 Astronomical Units, or 225,431,280 kilometers:

Tue Sep 17 2019

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

Comet C/2019 K4 brightness

The current visual magnitude of Comet C/2019 K4 is 23.19.


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/2019 K4, 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/2019 K4 between January 2013 and December 2100

Comet C/2019 K4 rise and set times

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

Comet C/2019 K4 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 C/2019 K4 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/2019 K4 Orbital Elements

The following table lists the orbital elements of Comet C/2019 K4 at epoch 21 August 2019 00:00 UTC (JD: 2458717.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99904722
Orbit inclination i 105.30517523°
Perihelion distance q 2.25940855 AU
338,002,709 km
Aphelion distance Q 4,740.50953272 AU
709,170,133,550 km
Semi-major axis a 2,371.38447064 AU
354,754,068,130 km
Orbital period period 115,481.1700 years
42,179,495.8095 days
Date of perihelion transit Tp 2019-Jun-16 10:02:21
2,458,650.9183 JD
Next perihelion transit 117502-Dec-30 05:27
44,638,146.7278 JD
Argument of perihelion peri 139.77175480149°
Longitude of the ascending node node 180.16513820123°
Mean anomaly M 0.0005682715732216°
Mean motion n 0.00000853°/day

Visualization of Comet C/2019 K4 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2019 K4 with respect of the Sun and the orbits of the major planets. The position of Comet C/2019 K4 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!

Comet C/2019 K4 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2019 K4 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2019 K4 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Nov 26 23h 51m 32s -67° 24’ 11” 23.11 Tucana
2020 Nov 27 23h 51m 02s -67° 19’ 28” 23.12 Tucana
2020 Nov 28 23h 50m 35s -67° 14’ 40” 23.13 Tucana
2020 Nov 29 23h 50m 08s -67° 09’ 51” 23.14 Tucana
2020 Nov 30 23h 49m 45s -67° 04’ 55” 23.15 Tucana
2020 Dec 01 23h 49m 23s -66° 59’ 58” 23.16 Tucana
2020 Dec 02 23h 49m 04s -66° 54’ 57” 23.18 Tucana
2020 Dec 03 23h 48m 44s -66° 49’ 54” 23.19 Tucana
2020 Dec 04 23h 48m 29s -66° 44’ 48” 23.20 Tucana
2020 Dec 05 23h 48m 14s -66° 39’ 39” 23.21 Tucana
2020 Dec 06 23h 48m 01s -66° 34’ 28” 23.22 Tucana
2020 Dec 07 23h 47m 49s -66° 29’ 16” 23.23 Tucana
2020 Dec 08 23h 47m 39s -66° 24’ 01” 23.24 Tucana
2020 Dec 09 23h 47m 31s -66° 18’ 43” 23.25 Tucana