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Comet C/2019 K4

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Comet C/2019 K4 Position

Comet C/2019 K4 is currently in the constellation of Aquarius. The current Right Ascension is 22h 54m 59s and the Declination is -23° 23’ 28”.

22h 54m 59s
-23° 23’ 28”

Simplified sky chart showing where Comet C/2019 K4 is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet C/2019 K4 in Aquarius on November, 18 2019
Field of view: 60x30 degrees
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 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Hihgher precision deep sky finder chart showing where Comet C/2019 K4 is right now (view fullscreen)

C/2019 K4
RA: 22h 54m 59s
Dec: -23° 23’ 28”
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

The distance of Comet C/2019 K4 from Earth is currently 373,495,237 kilometers, equivalent to 2.496661 Astronomical Units. Light takes 20 minutes and 45.8460 seconds to travel from Comet C/2019 K4 and arrive to us.

20 minutes and 45.8460 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 1.50691669 Astronomical Units, or 225,431,529 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 18.99.


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 behvior 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

Today's Comet C/2019 K4 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.5°
Max altitude: 15.0°
Azimuth: 246.4°
Comet C/2019 K4 is below the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet C/2019 K4 touches the horizon, consideting the effect of the atmospheric refraction. As the atmoshpere 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 01 August 2019 00:00 UTC (JD: 2458697.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99905168
Orbit inclination i 105.30528032°
Perihelion distance q 2.25940166 AU
338,001,678 km
Aphelion distance Q 4,762.81161856 AU
712,506,478,111 km
Semi-major axis a 2,382.53551011 AU
356,422,239,894 km
Orbital period period 116,296.6700 years
42,477,358.3404 days
Date of perihelion transit Tp 2019-Jun-16 09:59:49
2,458,650.9165 JD
Next perihelion transit 118318-Jul-07 18:09
44,936,009.2569 JD
Argument of perihelion peri 139.77098108936°
Longitude of the ascending node node 180.1650866541°
Mean anomaly M 0.0003947995870192°
Mean motion n 0.00000848°/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
2019 Nov 11 22h 56m 57s -21° 46’ 22” 18.75 Aquarius
2019 Nov 12 22h 56m 35s -22° 01’ 28” 18.78 Aquarius
2019 Nov 13 22h 56m 14s -22° 16’ 05” 18.82 Aquarius
2019 Nov 14 22h 55m 57s -22° 30’ 12” 18.85 Aquarius
2019 Nov 15 22h 55m 40s -22° 43’ 53” 18.89 Aquarius
2019 Nov 16 22h 55m 24s -22° 57’ 06” 18.92 Aquarius
2019 Nov 17 22h 55m 12s -23° 09’ 52” 18.95 Aquarius
2019 Nov 18 22h 55m 00s -23° 22’ 14” 18.99 Aquarius
2019 Nov 19 22h 54m 51s -23° 34’ 10” 19.02 Aquarius
2019 Nov 20 22h 54m 42s -23° 45’ 42” 19.06 Aquarius
2019 Nov 21 22h 54m 36s -23° 56’ 52” 19.09 Aquarius
2019 Nov 22 22h 54m 32s -24° 07’ 39” 19.12 Aquarius
2019 Nov 23 22h 54m 28s -24° 18’ 03” 19.16 Aquarius
2019 Nov 24 22h 54m 26s -24° 28’ 06” 19.19 Aquarius