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🌎 Location: Greenwich, United Kingdom [change]

Comet C/2018 X2 (Fitzsimmons)

Comet C/2018 X2 (Fitzsimmons) is currently in the constellation of Scorpius. The current Right Ascension of Comet C/2018 X2 (Fitzsimmons) is 16h 56m 13s and the Declination is -43° 35’ 16” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2018 X2 (Fitzsimmons) is 24.58 (JPL).

Summary of key facts about Comet C/2018 X2 (Fitzsimmons) [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 56m 13s
-43° 35’ 16”

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Additional information about Comet C/2018 X2 (Fitzsimmons) available on TheSkyLive:

Available Resources

Comet C/2018 X2 (Fitzsimmons) Position and Finder Charts

Below we provide Comet C/2018 X2 (Fitzsimmons) 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/2018 X2 (Fitzsimmons) in Scorpius on January, 21 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2018 X2 (Fitzsimmons) in Scorpius on January, 21 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/2018 X2 (Fitzsimmons) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2018 X2 (Fitzsimmons)
RA: 16h 56m 13s
Dec: -43° 35’ 16”
Deep sky finder chart for Comet C/2018 X2 (Fitzsimmons)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2018 X2 (Fitzsimmons)?, a page that provides all the information needed to find Comet C/2018 X2 (Fitzsimmons) in the sky and additional links to sky charts.

Comet C/2018 X2 (Fitzsimmons) Distance from Earth

The distance of Comet C/2018 X2 (Fitzsimmons) from Earth is currently 995,460,701 kilometers, equivalent to 6.654244 Astronomical Units. Light takes 55 minutes and 20.4995 seconds to travel from Comet C/2018 X2 (Fitzsimmons) and arrive to us.

55 minutes and 20.4995 seconds

The following chart shows the distance of Comet C/2018 X2 (Fitzsimmons) 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 X2 (Fitzsimmons) 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 X2 (Fitzsimmons) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2018 X2 (Fitzsimmons) to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2018 X2 (Fitzsimmons) to Earth happens on Mon Jan 7 2019 at a distance of 2.231060 Astronomical Units, or 333,761,796 kilometers:

Mon Jan 7 2019

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

Comet C/2018 X2 (Fitzsimmons) brightness

The current visual magnitude of Comet C/2018 X2 (Fitzsimmons) is 24.58.


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/2018 X2 (Fitzsimmons), 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 X2 (Fitzsimmons) between January 2013 and December 2100

Comet C/2018 X2 (Fitzsimmons) 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 X2 (Fitzsimmons) 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/2018 X2 (Fitzsimmons) 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/2018 X2 (Fitzsimmons) Orbital Elements

The following table lists the orbital elements of Comet C/2018 X2 (Fitzsimmons) at epoch 05 February 2019 00:00 UTC (JD: 2458520.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.98628611
Orbit inclination i 23.06823249°
Perihelion distance q 2.12587930 AU
318,027,017 km
Aphelion distance Q 307.90705808 AU
46,062,240,354 km
Semi-major axis a 155.01646869 AU
23,190,133,686 km
Orbital period period 1,930.0800 years
704,961.1531 days
Date of perihelion transit Tp 2019-Jul-08 12:50:00
2,458,673.0347 JD
Next perihelion transit 3949-Aug-20 16:30
3,163,634.1879 JD
Argument of perihelion peri 162.04700295766°
Longitude of the ascending node node 340.83322634°
Mean anomaly M 359.92210563448°
Mean motion n 0.00051067°/day

Visualization of Comet C/2018 X2 (Fitzsimmons) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2018 X2 (Fitzsimmons) with respect of the Sun and the orbits of the major planets. The position of Comet C/2018 X2 (Fitzsimmons) 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 X2 (Fitzsimmons)
View Comet C/2018 X2 (Fitzsimmons) in the 3D Solar System Simulator

Comet C/2018 X2 (Fitzsimmons) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2018 X2 (Fitzsimmons) 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 X2 (Fitzsimmons) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 14 16h 49m 36s -43° 09’ 24” 24.53 Scorpius
2021 Jan 15 16h 50m 29s -43° 12’ 38” 24.53 Scorpius
2021 Jan 16 16h 51m 20s -43° 15’ 52” 24.54 Scorpius
2021 Jan 17 16h 52m 10s -43° 19’ 09” 24.55 Scorpius
2021 Jan 18 16h 53m 02s -43° 22’ 24” 24.55 Scorpius
2021 Jan 19 16h 53m 51s -43° 25’ 41” 24.56 Scorpius
2021 Jan 20 16h 54m 41s -43° 28’ 59” 24.57 Scorpius
2021 Jan 21 16h 55m 30s -43° 32’ 16” 24.57 Scorpius
2021 Jan 22 16h 56m 17s -43° 35’ 35” 24.58 Scorpius
2021 Jan 23 16h 57m 06s -43° 38’ 53” 24.58 Scorpius
2021 Jan 24 16h 57m 53s -43° 42’ 11” 24.59 Scorpius
2021 Jan 25 16h 58m 40s -43° 45’ 32” 24.60 Scorpius
2021 Jan 26 16h 59m 26s -43° 48’ 51” 24.60 Scorpius
2021 Jan 27 17h 00m 12s -43° 52’ 13” 24.61 Scorpius