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Comet C/2025 K1 (ATLAS)

Below the horizon.  Rise: 23:09 | Tran: 6:39 | Set: 14:05
Alt: -17.99°   Az: 333.14°   Direction: North-North-West

Comet C/2025 K1 (ATLAS) is in the constellation of Pegasus, at a distance of 344,401,652.0 kilometers from Earth. The current Right Ascension is 22h 27m 25s and the Declination is +16° 39’ 49” (apparent coordinates). The latest observed magnitude of Comet C/2025 K1 (ATLAS) is 17.9 (data provided by COBS).

Finder Charts

Map showing Comet C/2025 K1 (ATLAS) in Pegasus on June, 03 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet C/2025 K1 (ATLAS) in Pegasus on June, 03 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2025 K1 (ATLAS) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2025 K1 (ATLAS)
RA: 22h 26m 10s
Dec: +16° 32’ 01”
Deep sky finder chart for Comet C/2025 K1 (ATLAS). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet C/2025 K1 (ATLAS)?, a page that provides all the information needed to find Comet C/2025 K1 (ATLAS) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

22h 27m 25s
+16° 39’ 49”
10h 13m 23s
08h 40m 48s

J2000

22h 26m 10s
+16° 32’ 01”

Additional Information

Pegasus
17.9
0.5'
n/a
2025-05-31
17.87

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/2025 K1 (ATLAS) from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 73.3°
Max altitude: 55.1°
Azimuth: 286.6°
  • C/2025 K1 (ATLAS) is below the horizon from Greenwich, UK.
  • Given its current magnitude, C/2025 K1 (ATLAS) 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/2025 K1 (ATLAS) from Earth is currently 344,401,652.0 kilometers, equivalent to 2.3021828478 Astronomical Units. Light takes 19m 8.800s to travel from Comet C/2025 K1 (ATLAS) and arrive to us.

344,401,652.0
2.3021828478
19m 8.800s

The following chart shows the distance of Comet C/2025 K1 (ATLAS) 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/2025 K1 (ATLAS) 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/2025 K1 (ATLAS) 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/2025 K1 (ATLAS) to Earth happens on Tue Nov 25 2025 at a distance of 0.403298 Astronomical Units, or 60,332,480 kilometers:

Tue Nov 25 2025
60,332,480
0.403298

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/2025 K1 (ATLAS), 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/2025 K1 (ATLAS) as a function of time

Orbital Elements

The following table lists the orbital elements of Comet C/2025 K1 (ATLAS) at epoch 24 May 2025 00:00 UTC (JD: 2460820.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00153256
Orbit inclination i 147.90080333°
Perihelion distance q 0.33543043 AU
50,179,678 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2025-Oct-08 07:23:30
2,460,956.8080 JD
Argument of perihelion peri 270.79200919359°
Longitude of the ascending node node 97.487972468297°
Mean anomaly M -0.04149059859563°
Mean motion n 0.00030439°/day
2h1>Orbit Visualization
Orbit Diagram of Comet C/2025 K1 (ATLAS)
View Comet C/2025 K1 (ATLAS) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Comet C/2025 K1 (ATLAS) 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 27 22h 27m 20s +15° 35’ 52” 18.27 Pegasus
2025 May 28 22h 27m 25s +15° 43’ 59” 18.22 Pegasus
2025 May 29 22h 27m 29s +15° 52’ 10” 18.16 Pegasus
2025 May 30 22h 27m 32s +16° 00’ 25” 18.11 Pegasus
2025 May 31 22h 27m 33s +16° 08’ 44” 18.06 Pegasus
2025 Jun 01 22h 27m 33s +16° 17’ 08” 18.01 Pegasus
2025 Jun 02 22h 27m 31s +16° 25’ 36” 17.96 Pegasus
2025 Jun 03 22h 27m 28s +16° 34’ 08” 17.90 Pegasus
2025 Jun 04 22h 27m 23s +16° 42’ 45” 17.85 Pegasus
2025 Jun 05 22h 27m 16s +16° 51’ 26” 17.79 Pegasus
2025 Jun 06 22h 27m 07s +17° 00’ 12” 17.74 Pegasus
2025 Jun 07 22h 26m 56s +17° 09’ 01” 17.68 Pegasus
2025 Jun 08 22h 26m 44s +17° 17’ 57” 17.63 Pegasus
2025 Jun 09 22h 26m 30s +17° 26’ 57” 17.57 Pegasus

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