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Comet C/2018 X2 (Fitzsimmons)

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Comet C/2018 X2 (Fitzsimmons) Position

Comet C/2018 X2 (Fitzsimmons) is currently in the constellation of Leo. The current Right Ascension is 11h 24m 38s and the Declination is +00° 23’ 57”.

11h 24m 38s
+00° 23’ 57”

Simplified sky chart showing where Comet C/2018 X2 (Fitzsimmons) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet C/2018 X2 (Fitzsimmons) in Leo on September, 15 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 X2 (Fitzsimmons) is right now (view fullscreen)

C/2018 X2 (Fitzsimmons)
RA: 11h 24m 38s
Dec: +00° 23’ 57”
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

The distance of Comet C/2018 X2 (Fitzsimmons) from Earth is currently 490,119,486 kilometers, equivalent to 3.276246 Astronomical Units. Light takes 27 minutes and 14.8626 seconds to travel from Comet C/2018 X2 (Fitzsimmons) and arrive to us.

27 minutes and 14.8626 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 2.23104482 Astronomical Units, or 333,759,555 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 17.72.


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 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

Today's Comet C/2018 X2 (Fitzsimmons) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.5°
Max altitude: 38.9°
Azimuth: 270.3°
Comet C/2018 X2 (Fitzsimmons) is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet C/2018 X2 (Fitzsimmons) 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 X2 (Fitzsimmons) Orbital Elements

The following table lists the orbital elements of Comet C/2018 X2 (Fitzsimmons) at epoch 02 February 2019 00:00 UTC (JD: 2458517.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.98625742
Orbit inclination i 23.06816493°
Perihelion distance q 2.12588931 AU
318,028,515 km
Aphelion distance Q 307.26132957 AU
45,965,640,745 km
Semi-major axis a 154.69360944 AU
23,141,834,630 km
Orbital period period 1,924.0500 years
702,759.9224 days
Date of perihelion transit Tp 2019-Jul-08 12:50:29
2,458,673.0351 JD
Next perihelion transit 3943-Aug-11 10:58
3,161,432.9575 JD
Argument of perihelion peri 162.04638007876°
Longitude of the ascending node node 340.83356445855°
Mean anomaly M 359.92032467764°
Mean motion n 0.00051227°/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
2019 Sep 08 11h 10m 28s +02° 47’ 26” 17.62 Leo
2019 Sep 09 11h 12m 23s +02° 28’ 23” 17.63 Leo
2019 Sep 10 11h 14m 15s +02° 09’ 23” 17.64 Leo
2019 Sep 11 11h 16m 08s +01° 50’ 22” 17.66 Leo
2019 Sep 12 11h 18m 01s +01° 31’ 24” 17.67 Leo
2019 Sep 13 11h 19m 53s +01° 12’ 28” 17.68 Leo
2019 Sep 14 11h 21m 43s +00° 53’ 32” 17.69 Leo
2019 Sep 15 11h 23m 35s +00° 34’ 39” 17.71 Leo
2019 Sep 16 11h 25m 27s +00° 15’ 47” 17.72 Leo
2019 Sep 17 11h 27m 18s -00° 03’ 02” 17.73 Leo
2019 Sep 18 11h 29m 08s -00° 21’ 51” 17.74 Leo
2019 Sep 19 11h 30m 59s -00° 40’ 39” 17.76 Leo
2019 Sep 20 11h 32m 48s -00° 59’ 25” 17.77 Leo
2019 Sep 21 11h 34m 39s -01° 18’ 09” 17.78 Leo