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Comet C/2025 F2 (SWAN)

Below the horizon.  Rise: 9:56 | Tran: 12:39 | Set: 15:21
Alt: -57.83°   Az: 63.24°   Direction: South-West

Comet C/2025 F2 (SWAN) is in the constellation of Columba, at a distance of 248,609,742.0 kilometers from Earth. The current Right Ascension is 05h 58m 33s and the Declination is -30° 51’ 33” (apparent coordinates). The estimated magnitude of comet C/2025 F2 (SWAN), computed using JPL Horizons's data, is 15.01).

Finder Charts

The sky charts below show, at different resolutions, the position of comet C/2025 F2 (SWAN) in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet C/2025 F2 (SWAN) in the constellation of Columba on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet C/2025 F2 (SWAN) in the constellation of Columba on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of comet C/2025 F2 (SWAN) against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

C/2025 F2 (SWAN)
RA: 05h 57m 35s
Dec: -30° 51’ 37”
Simplified high-resolution deep sky chart showing the current position of comet C/2025 F2 (SWAN). Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

05h 58m 33s
-30° 51’ 33”
14h 14m 32s
20h 13m 05s

J2000

05h 57m 35s
-30° 51’ 37”

Additional Information

Columba
n/a
n/a
n/a
n/a
15.01

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

The following table lists today's rise, transit and set times of comet C/2025 F2 (SWAN) from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 121.0°
Max altitude: 7.4°
Azimuth: 238.9°

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 F2 (SWAN) from Earth is currently 248,609,742.0 kilometers, equivalent to 1.6618534798 Astronomical Units. Light takes 13m 49.273s to travel from comet C/2025 F2 (SWAN) and arrive to us.

248,609,742.0
1.6618534798
13m 49.273s

The following graph shows the distance of comet C/2025 F2 (SWAN) from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of comet C/2025 F2 (SWAN) from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of C/2025 F2 (SWAN) from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of comet C/2025 F2 (SWAN) to Earth happened on Friday 2 May 2025 at a distance of 0.962698 Astronomical Units, or 144,017,526 kilometers:

Friday 2 May 2025
144,017,526
0.962698

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

Light Curve

The following chart shows the light curve of comet C/2025 F2 (SWAN), i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of comet C/2025 F2 (SWAN) as a function of time

Orbital Elements

The following table lists the orbital elements of comet C/2025 F2 (SWAN) at epoch March, 20 2025 00:00 UTC (JD: 2460755.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99997363
Orbit inclination i 90.37190990°
Perihelion distance q 0.33342273 AU
49,879,330 km
Aphelion distance Q 25,286.58475929 AU
3,782,819,244,850 km
Semi-major axis a 12,643.45909101 AU
1,891,434,562,090 km
Orbital period period 1,421,697.0551 years
519,274,849.3607 days
Date of perihelion transit Tp May 1, 2025
2,460,796.6592 JD
Next perihelion transit July 31, 1423751
521,735,646.0199 JD
Argument of perihelion peri 153.84988301817°
Longitude of the ascending node node 329.84365284104°
Mean anomaly M 359.99997146537°
Mean motion n 0.00000069°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet C/2025 F2 (SWAN) relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

15 Days Ephemeris

The following table lists the ephemerides of comet C/2025 F2 (SWAN) 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
Jun 19 2025 05h 50m 54s -26° 54’ 14” 14.31 Lepus
Jun 20 2025 05h 51m 59s -27° 28’ 27” 14.41 Columba
Jun 21 2025 05h 53m 05s -28° 02’ 24” 14.52 Columba
Jun 22 2025 05h 54m 09s -28° 36’ 07” 14.62 Columba
Jun 23 2025 05h 55m 14s -29° 09’ 35” 14.72 Columba
Jun 24 2025 05h 56m 19s -29° 42’ 52” 14.81 Columba
Jun 25 2025 05h 57m 23s -30° 15’ 59” 14.91 Columba
Jun 26 2025 05h 58m 28s -30° 48’ 55” 15.00 Columba
Jun 27 2025 05h 59m 31s -31° 21’ 42” 15.10 Columba
Jun 28 2025 06h 00m 35s -31° 54’ 22” 15.19 Columba
Jun 29 2025 06h 01m 38s -32° 26’ 55” 15.28 Columba
Jun 30 2025 06h 02m 42s -32° 59’ 21” 15.36 Columba
Jul 01 2025 06h 03m 45s -33° 31’ 43” 15.45 Columba
Jul 02 2025 06h 04m 49s -34° 03’ 59” 15.53 Columba

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