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Comet C/2023 R1 (PANSTARRS)

Below the horizon.  Rise: 0:06 | Tran: 8:10 | Set: 16:11
Alt: -3.72°   Az: 313.50°   Direction: North-West

Comet C/2023 R1 (PANSTARRS) is in the constellation of Pegasus, at a distance of 741,584,745.0 kilometers from Earth. The current Right Ascension is 22h 35m 53s and the Declination is +22° 08’ 51” (apparent coordinates). The predicted magnitude of Comet C/2023 R1 (PANSTARRS) is 16.72 (data provided by JPL Horizons).

Finder Charts

Map showing Comet C/2023 R1 (PANSTARRS) in Pegasus on May, 13 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet C/2023 R1 (PANSTARRS) in Pegasus on May, 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 R1 (PANSTARRS) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2023 R1 (PANSTARRS)
RA: 22h 34m 40s
Dec: +22° 00’ 57”
Deep sky finder chart for Comet C/2023 R1 (PANSTARRS). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet C/2023 R1 (PANSTARRS)?, a page that provides all the information needed to find Comet C/2023 R1 (PANSTARRS) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

22h 35m 53s
+22° 08’ 51”
08h 34m 23s
07h 10m 17s

J2000

22h 34m 40s
+22° 00’ 57”

Additional Information

Pegasus
n/a
n/a
n/a
n/a
16.72

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 R1 (PANSTARRS) from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 67.8°
Max altitude: 60.6°
Azimuth: 292.1°
  • C/2023 R1 (PANSTARRS) is below the horizon from Greenwich, UK.
  • Given its current magnitude, C/2023 R1 (PANSTARRS) 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 R1 (PANSTARRS) from Earth is currently 741,584,745.0 kilometers, equivalent to 4.9571878365 Astronomical Units. Light takes 41m 13.660s to travel from Comet C/2023 R1 (PANSTARRS) and arrive to us.

741,584,745.0
4.9571878365
41m 13.660s

The following chart shows the distance of Comet C/2023 R1 (PANSTARRS) 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 R1 (PANSTARRS) 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 R1 (PANSTARRS) 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 R1 (PANSTARRS) to Earth happens on Sat Jun 13 2026 at a distance of 2.621922 Astronomical Units, or 392,233,981 kilometers:

Sat Jun 13 2026
392,233,981
2.621922

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 R1 (PANSTARRS), 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 R1 (PANSTARRS) as a function of time

Orbital Elements

The following table lists the orbital elements of Comet C/2023 R1 (PANSTARRS) at epoch 04 September 2023 00:00 UTC (JD: 2460192.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99717592
Orbit inclination i 149.31048123°
Perihelion distance q 3.56793016 AU
533,754,756 km
Aphelion distance Q 2,523.22348279 AU
377,468,861,083 km
Semi-major axis a 1,263.39570648 AU
189,001,307,919 km
Orbital period period 44,907.3365 years
16,402,404.6517 days
Date of perihelion transit Tp 2026-Apr-15 22:07:21
2,461,146.4218 JD
Argument of perihelion peri 144.43147012111°
Longitude of the ascending node node 62.538584256169°
Mean anomaly M 359.9790633234°
Mean motion n 0.00002195°/day

Orbit Visualization

Orbit Diagram of Comet C/2023 R1 (PANSTARRS)
View Comet C/2023 R1 (PANSTARRS) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Comet C/2023 R1 (PANSTARRS) 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 May 06 22h 37m 04s +21° 30’ 22” 16.82 Pegasus
2025 May 07 22h 36m 57s +21° 35’ 22” 16.81 Pegasus
2025 May 08 22h 36m 50s +21° 40’ 22” 16.80 Pegasus
2025 May 09 22h 36m 42s +21° 45’ 23” 16.78 Pegasus
2025 May 10 22h 36m 33s +21° 50’ 25” 16.77 Pegasus
2025 May 11 22h 36m 24s +21° 55’ 26” 16.76 Pegasus
2025 May 12 22h 36m 13s +22° 00’ 29” 16.74 Pegasus
2025 May 13 22h 36m 01s +22° 05’ 32” 16.73 Pegasus
2025 May 14 22h 35m 48s +22° 10’ 36” 16.71 Pegasus
2025 May 15 22h 35m 35s +22° 15’ 40” 16.70 Pegasus
2025 May 16 22h 35m 21s +22° 20’ 45” 16.69 Pegasus
2025 May 17 22h 35m 06s +22° 25’ 48” 16.67 Pegasus
2025 May 18 22h 34m 50s +22° 30’ 52” 16.66 Pegasus
2025 May 19 22h 34m 33s +22° 35’ 56” 16.64 Pegasus

Additional Resources on TheSkyLive