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Comet C/2018 L2 (ATLAS)

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Comet C/2018 L2 (ATLAS) Position

Comet C/2018 L2 (ATLAS) is currently in the constellation of Perseus. The current Right Ascension is 02h 54m 39s and the Declination is +48° 33’ 57”.

02h 54m 39s
+48° 33’ 57”

Simplified sky chart showing where Comet C/2018 L2 (ATLAS) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet C/2018 L2 (ATLAS) in Perseus on June, 17 2019
Field of view: 60x30 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]

Hihgher precision deep sky finder chart showing where Comet C/2018 L2 (ATLAS) is right now (view fullscreen)

C/2018 L2 (ATLAS)
RA: 02h 54m 39s
Dec: +48° 33’ 57”
Deep sky finder chart for Comet C/2018 L2 (ATLAS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2018 L2 (ATLAS)?, a page that provides all the information needed to find Comet C/2018 L2 (ATLAS) in the sky and additional links to sky charts.

Comet C/2018 L2 (ATLAS) Distance

The distance of Comet C/2018 L2 (ATLAS) from Earth is currently 546,335,658 kilometers, equivalent to 3.652028 Astronomical Units. Light takes 30 minutes and 22.3796 seconds to travel from Comet C/2018 L2 (ATLAS) and arrive to us.

30 minutes and 22.3796 seconds

The following chart shows the distance of Comet C/2018 L2 (ATLAS) 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/2018 L2 (ATLAS) 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/2018 L2 (ATLAS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2018 L2 (ATLAS) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2018 L2 (ATLAS) to Earth happens on Sun Jun 17 2018 at a distance of 1.95354027 Astronomical Units, or 292,245,465 kilometers:

Sun Jun 17 2018

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

Comet C/2018 L2 (ATLAS) brightness

The current visual magnitude of Comet C/2018 L2 (ATLAS) is 18.01.


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/2018 L2 (ATLAS), 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/2018 L2 (ATLAS) between January 2013 and December 2100

Comet C/2018 L2 (ATLAS) rise and set times

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

Comet C/2018 L2 (ATLAS) is circumpolar and transits at 09:13 UTC (altitude: 87.1°)

The rise and set times are defined as the time at which the upper limb of Comet C/2018 L2 (ATLAS) 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/2018 L2 (ATLAS) Orbital Elements

The following table lists the orbital elements of Comet C/2018 L2 (ATLAS) at epoch 04 October 2018 00:00 UTC (JD: 2458396.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99306599
Orbit inclination i 67.42354103°
Perihelion distance q 1.71168544 AU
256,064,498 km
Aphelion distance Q 491.99528437 AU
73,601,447,084 km
Semi-major axis a 246.85348491 AU
36,928,755,791 km
Orbital period period 3,878.5300 years
1,416,632.8909 days
Date of perihelion transit Tp 2018-Dec-02 13:50:13
2,458,455.0765 JD
Next perihelion transit 5897-Jul-12 11:13
3,875,087.9674 JD
Argument of perihelion peri 56.228990965213°
Longitude of the ascending node node 243.01849508878°
Mean anomaly M 359.98511431152°
Mean motion n 0.00025412°/day

Visualization of Comet C/2018 L2 (ATLAS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2018 L2 (ATLAS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2018 L2 (ATLAS) 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/2018 L2 (ATLAS)
View Comet C/2018 L2 (ATLAS) in the 3D Solar System Simulator

Comet C/2018 L2 (ATLAS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2018 L2 (ATLAS) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2018 L2 (ATLAS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Jun 10 02h 41m 02s +48° 19’ 45” 17.82 Perseus
2019 Jun 11 02h 42m 48s +48° 21’ 39” 17.85 Perseus
2019 Jun 12 02h 44m 35s +48° 23’ 31” 17.87 Perseus
2019 Jun 13 02h 46m 18s +48° 25’ 23” 17.89 Perseus
2019 Jun 14 02h 48m 02s +48° 27’ 11” 17.92 Perseus
2019 Jun 15 02h 49m 45s +48° 28’ 58” 17.94 Perseus
2019 Jun 16 02h 51m 28s +48° 30’ 42” 17.96 Perseus
2019 Jun 17 02h 53m 08s +48° 32’ 25” 17.98 Perseus
2019 Jun 18 02h 54m 47s +48° 34’ 05” 18.01 Perseus
2019 Jun 19 02h 56m 26s +48° 35’ 45” 18.03 Perseus
2019 Jun 20 02h 58m 04s +48° 37’ 23” 18.05 Perseus
2019 Jun 21 02h 59m 39s +48° 38’ 58” 18.07 Perseus
2019 Jun 22 03h 01m 14s +48° 40’ 33” 18.09 Perseus
2019 Jun 23 03h 02m 49s +48° 42’ 06” 18.12 Perseus