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Comet C/2018 R4 (Fuls)

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Comet C/2018 R4 (Fuls) Position

Comet C/2018 R4 (Fuls) is currently in the constellation of Aries. The current Right Ascension is 02h 33m 02s and the Declination is +25° 32’ 38”.

02h 33m 02s
+25° 32’ 38”

Simplified sky chart showing where Comet C/2018 R4 (Fuls) is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Comet C/2018 R4 (Fuls) in Aries on March, 29 2020
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]

Higher precision deep sky finder chart showing where Comet C/2018 R4 (Fuls) is right now (view fullscreen)

C/2018 R4 (Fuls)
RA: 02h 33m 02s
Dec: +25° 32’ 38”
Deep sky finder chart for Comet C/2018 R4 (Fuls)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2018 R4 (Fuls)?, a page that provides all the information needed to find Comet C/2018 R4 (Fuls) in the sky and additional links to sky charts.

Comet C/2018 R4 (Fuls) Distance

The distance of Comet C/2018 R4 (Fuls) from Earth is currently 1,277,641,694 kilometers, equivalent to 8.540507 Astronomical Units. Light takes 1 hours, 11 minutes and 1.7540 seconds to travel from Comet C/2018 R4 (Fuls) and arrive to us.

1 hours, 11 minutes and 1.7540 seconds

The following chart shows the distance of Comet C/2018 R4 (Fuls) 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 R4 (Fuls) 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 R4 (Fuls) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2018 R4 (Fuls) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2018 R4 (Fuls) to Earth happens on Tue Aug 21 2018 at a distance of 1.94798045 Astronomical Units, or 291,413,728 kilometers:

Tue Aug 21 2018

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

Comet C/2018 R4 (Fuls) brightness

The current visual magnitude of Comet C/2018 R4 (Fuls) is 28.04.


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 R4 (Fuls), 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 R4 (Fuls) between January 2013 and December 2100

Comet C/2018 R4 (Fuls) 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 R4 (Fuls) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 64.5°
Max altitude: 64.1°
Azimuth: 295.6°
Comet C/2018 R4 (Fuls) 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 R4 (Fuls) 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 R4 (Fuls) Orbital Elements

The following table lists the orbital elements of Comet C/2018 R4 (Fuls) at epoch 12 September 2018 00:00 UTC (JD: 2458374.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99419128
Orbit inclination i 11.68277277°
Perihelion distance q 1.70938831 AU
255,720,852 km
Aphelion distance Q 586.84976210 AU
87,791,475,007 km
Semi-major axis a 294.27957521 AU
44,023,597,930 km
Orbital period period 5,048.3400 years
1,843,905.2785 days
Date of perihelion transit Tp 2018-Mar-03 14:45:54
2,458,181.1152 JD
Next perihelion transit 7066-Aug-11 21:26
4,302,086.3937 JD
Argument of perihelion peri 345.1424179974°
Longitude of the ascending node node 298.46301269168°
Mean anomaly M 0.037756019789355°
Mean motion n 0.00019524°/day

Visualization of Comet C/2018 R4 (Fuls) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2018 R4 (Fuls) with respect of the Sun and the orbits of the major planets. The position of Comet C/2018 R4 (Fuls) 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 R4 (Fuls)
View Comet C/2018 R4 (Fuls) in the 3D Solar System Simulator

Comet C/2018 R4 (Fuls) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2018 R4 (Fuls) 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 R4 (Fuls) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Mar 22 02h 28m 59s +25° 20’ 34” 27.96 Aries
2020 Mar 23 02h 29m 30s +25° 22’ 02” 27.97 Aries
2020 Mar 24 02h 30m 02s +25° 23’ 34” 27.98 Aries
2020 Mar 25 02h 30m 33s +25° 25’ 06” 27.99 Aries
2020 Mar 26 02h 31m 05s +25° 26’ 42” 28.00 Aries
2020 Mar 27 02h 31m 36s +25° 28’ 18” 28.01 Aries
2020 Mar 28 02h 32m 09s +25° 29’ 54” 28.02 Aries
2020 Mar 29 02h 32m 41s +25° 31’ 33” 28.03 Aries
2020 Mar 30 02h 33m 14s +25° 33’ 14” 28.04 Aries
2020 Mar 31 02h 33m 47s +25° 34’ 55” 28.05 Aries
2020 Apr 01 02h 34m 19s +25° 36’ 38” 28.06 Aries
2020 Apr 02 02h 34m 53s +25° 38’ 22” 28.06 Aries
2020 Apr 03 02h 35m 26s +25° 40’ 09” 28.07 Aries
2020 Apr 04 02h 35m 58s +25° 41’ 56” 28.08 Aries