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Comet C/2023 U1 (Fuls)

Below the horizon.  Never rises today
Alt: -13.70°   Az: 163.08°   Direction: South-South-East

Comet C/2023 U1 (Fuls) is in the constellation of Horologium, at a distance of 809,961,399.0 kilometers from Earth. The current Right Ascension is 03h 18m 33s and the Declination is -49° 49’ 46” (apparent coordinates). The predicted magnitude of Comet C/2023 U1 (Fuls) is 19.02 (data provided by JPL Horizons).

Finder Charts

Map showing Comet C/2023 U1 (Fuls) in Horologium on June, 13 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet C/2023 U1 (Fuls) in Horologium on June, 13 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2023 U1 (Fuls) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2023 U1 (Fuls)
RA: 03h 17m 45s
Dec: -49° 55’ 17”
Deep sky finder chart for Comet C/2023 U1 (Fuls). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet C/2023 U1 (Fuls)?, a page that provides all the information needed to find Comet C/2023 U1 (Fuls) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

03h 18m 33s
-49° 49’ 46”
22h 16m 01s
01h 34m 34s

J2000

03h 17m 45s
-49° 55’ 17”

Additional Information

Horologium
n/a
n/a
n/a
n/a
19.02

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

Rise and Set Times

Today's rise, transit and set times of Comet C/2023 U1 (Fuls) from Greenwich, UK (all times relative to the local timezone Europe/London):

Today Comet C/2023 U1 (Fuls) is not visible from Greenwich, UK

  • C/2023 U1 (Fuls) is below the horizon from Greenwich, UK.
  • Given its current magnitude, C/2023 U1 (Fuls) is visible only through long exposure photography.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Distance from Earth

The distance of Comet C/2023 U1 (Fuls) from Earth is currently 809,961,399.0 kilometers, equivalent to 5.4142575373 Astronomical Units. Light takes 45m 1.740s to travel from Comet C/2023 U1 (Fuls) and arrive to us.

809,961,399.0
5.4142575373
45m 1.740s

The following chart shows the distance of Comet C/2023 U1 (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.

Chart of the distance of Comet C/2023 U1 (Fuls) from Earth in Astronomical Units (au)

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/2023 U1 (Fuls) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach

Between 1 January 2000 and 31 December 2099, the closest approach of Comet C/2023 U1 (Fuls) to Earth happens on Wed Jan 17 2024 at a distance of 4.691326 Astronomical Units, or 701,812,384 kilometers:

Wed Jan 17 2024
701,812,384
4.691326

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

Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2023 U1 (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.

Chart of the magnitude of Comet C/2023 U1 (Fuls) as a function of time

Orbital Elements

The following table lists the orbital elements of Comet C/2023 U1 (Fuls) at epoch 19 October 2023 00:00 UTC (JD: 2460237.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.03008184
Orbit inclination i 108.18654780°
Perihelion distance q 4.95667097 AU
741,507,424 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2024-Oct-13 04:00:43
2,460,596.6672 JD
Argument of perihelion peri 256.06507988337°
Longitude of the ascending node node 305.86335192°
Mean anomaly M -0.16736792291754°
Mean motion n 0.00046599°/day
2h1>Orbit Visualization
Orbit Diagram of Comet C/2023 U1 (Fuls)
View Comet C/2023 U1 (Fuls) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Comet C/2023 U1 (Fuls) computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2025 Jun 06 03h 16m 20s -49° 06’ 49” 19.01 Horologium
2025 Jun 07 03h 16m 39s -49° 12’ 10” 19.01 Horologium
2025 Jun 08 03h 16m 58s -49° 17’ 39” 19.01 Horologium
2025 Jun 09 03h 17m 17s -49° 23’ 19” 19.01 Horologium
2025 Jun 10 03h 17m 35s -49° 29’ 08” 19.02 Horologium
2025 Jun 11 03h 17m 52s -49° 35’ 08” 19.02 Horologium
2025 Jun 12 03h 18m 10s -49° 41’ 17” 19.02 Horologium
2025 Jun 13 03h 18m 27s -49° 47’ 36” 19.02 Horologium
2025 Jun 14 03h 18m 44s -49° 54’ 04” 19.02 Horologium
2025 Jun 15 03h 19m 00s -50° 00’ 44” 19.02 Horologium
2025 Jun 16 03h 19m 16s -50° 07’ 31” 19.02 Horologium
2025 Jun 17 03h 19m 31s -50° 14’ 30” 19.02 Horologium
2025 Jun 18 03h 19m 45s -50° 21’ 38” 19.02 Horologium
2025 Jun 19 03h 19m 59s -50° 28’ 56” 19.02 Horologium

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