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Comet C/2018 L2 (ATLAS)

Available Resources

Comet C/2018 L2 (ATLAS) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2018 L2 (ATLAS) is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Comet C/2018 L2 (ATLAS) in Pegasus on February, 23 2019
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
21h 52m 34s
+36° 10’ 27”

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.

Comet C/2018 L2 (ATLAS) Rise and Set Times

Today's Comet C/2018 L2 (ATLAS) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 53.9°
Max altitude: 74.8°
Azimuth: 306.4°

Comet C/2018 L2 (ATLAS) Orbit Diagram

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) 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 Feb 16 21h 27m 33s +34° 10’ 56” 14.83 Cygnus
2019 Feb 17 21h 31m 00s +34° 28’ 06” 14.85 Cygnus
2019 Feb 18 21h 34m 27s +34° 45’ 05” 14.87 Cygnus
2019 Feb 19 21h 37m 54s +35° 01’ 49” 14.90 Cygnus
2019 Feb 20 21h 41m 22s +35° 18’ 20” 14.92 Cygnus
2019 Feb 21 21h 44m 49s +35° 34’ 40” 14.94 Cygnus
2019 Feb 22 21h 48m 16s +35° 50’ 44” 14.97 Cygnus
2019 Feb 23 21h 51m 43s +36° 06’ 38” 14.99 Pegasus
2019 Feb 24 21h 55m 09s +36° 22’ 17” 15.02 Pegasus
2019 Feb 25 21h 58m 36s +36° 37’ 42” 15.04 Lacerta
2019 Feb 26 22h 02m 02s +36° 52’ 55” 15.07 Lacerta
2019 Feb 27 22h 05m 27s +37° 07’ 54” 15.09 Lacerta
2019 Feb 28 22h 08m 53s +37° 22’ 40” 15.12 Lacerta
2019 Mar 01 22h 12m 17s +37° 37’ 13” 15.14 Lacerta

Distance of Comet C/2018 L2 (ATLAS) from Earth

The following chart shows the distance of Comet C/2018 L2 (ATLAS) from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of C/2018 L2 (ATLAS) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2018 L2 (ATLAS) from Earth between January 2013 and December 2075

Light Curve of Comet C/2018 L2 (ATLAS)

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 2075

Comet C/2018 L2 (ATLAS) Orbital Elements

The following table lists the orbital elements of Comet C/2018 L2 (ATLAS) at epoch 29 July 2018 00:00 UTC (JD: 2458329.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99324119
Orbit inclination i 67.42244015°
Perihelion distance q 1.71170002 AU
256,066,679 km
Aphelion distance Q 504.79781594 AU
75,516,678,551 km
Semi-major axis a 253.25475798 AU
37,886,372,615 km
Orbital period period 4,030.3700 years
1,472,091.6418 days
Date of perihelion transit Tp 2018-Dec-02 13:43:11
2,458,455.0717 JD
Next perihelion transit 6049-May-15 05:07
3,930,546.7135 JD
Argument of perihelion peri 56.227587304082°
Longitude of the ascending node node 243.0181294308°
Mean anomaly M 359.96929144995°
Mean motion n 0.00024455°/day
Closest approach to Earth* 2018-Jun-17
Distance of closest approach* 1.95357477 AU
292,250,627 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.