Comet C/2025 F2 (SWAN)
Comet C/2025 F2 (SWAN) is in the constellation of
Lepus,
at a distance of
Finder Charts
View interactive star map
High precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2025 F2 (SWAN) is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet C/2025 F2 (SWAN)?, a page that provides all the information needed to find Comet C/2025 F2 (SWAN) in the sky and additional links to sky charts.
Celestial Coordinates
Apparent
J2000
Additional Information
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 F2 (SWAN) from Greenwich, UK (all times relative to the local timezone Europe/London):
- C/2025 F2 (SWAN) is below the horizon from Greenwich, UK.
- Given its current magnitude, C/2025 F2 (SWAN) is visible with the help of a telescope having an aperture of 10 inches (250mm) or more.
- 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 F2 (SWAN) from Earth is currently
The following chart shows the distance of Comet C/2025 F2 (SWAN) 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.
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 F2 (SWAN) 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 F2 (SWAN) to Earth happens on Fri May 2 2025 at a distance of 0.962698 Astronomical Units, or 144,017,526 kilometers:
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 F2 (SWAN), 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.
Orbital Elements
The following table lists the orbital elements of Comet C/2025 F2 (SWAN) at epoch 20 March 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 | 2025-May-01 03:49:15 2,460,796.6592 JD |
| Next perihelion transit | 4096-Feb-04 00:01 521,735,646.0199 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 |
View Comet C/2025 F2 (SWAN) in the 3D Solar System Simulator
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 |
|---|---|---|---|---|
| 2025 May 29 | 05h 26m 13s | -12° 46’ 32” | 11.43 | Lepus |
| 2025 May 30 | 05h 27m 33s | -13° 36’ 20” | 11.61 | Lepus |
| 2025 May 31 | 05h 28m 52s | -14° 24’ 42” | 11.78 | Lepus |
| 2025 Jun 01 | 05h 30m 08s | -15° 11’ 45” | 11.94 | Lepus |
| 2025 Jun 02 | 05h 31m 24s | -15° 57’ 34” | 12.10 | Lepus |
| 2025 Jun 03 | 05h 32m 38s | -16° 42’ 13” | 12.26 | Lepus |
| 2025 Jun 04 | 05h 33m 52s | -17° 25’ 50” | 12.41 | Lepus |
| 2025 Jun 05 | 05h 35m 04s | -18° 08’ 27” | 12.56 | Lepus |
| 2025 Jun 06 | 05h 36m 15s | -18° 50’ 09” | 12.71 | Lepus |
| 2025 Jun 07 | 05h 37m 26s | -19° 31’ 02” | 12.85 | Lepus |
| 2025 Jun 08 | 05h 38m 36s | -20° 11’ 06” | 12.99 | Lepus |
| 2025 Jun 09 | 05h 39m 45s | -20° 50’ 28” | 13.12 | Lepus |
| 2025 Jun 10 | 05h 40m 53s | -21° 29’ 08” | 13.25 | Lepus |
| 2025 Jun 11 | 05h 42m 02s | -22° 07’ 12” | 13.38 | Lepus |
Additional Resources on TheSkyLive
- Comet C/2025 F2 (SWAN): Complete reference information on TheSkyLive.com.
- Where is Comet C/2025 F2 (SWAN)?: Key information on locating Comet C/2025 F2 (SWAN) in the sky.
- Distance from Earth: Find out how far Comet C/2025 F2 (SWAN) is from Earth right now.
- How Bright is Comet C/2025 F2 (SWAN)?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Comet C/2025 F2 (SWAN)'s rise and set times from your location.
- Interactive Sky Map: planetarium-style interactive visualization of Comet C/2025 F2 (SWAN)'s position in the sky.
- Live Position Tracker: high precision position tracker with deep space imagery.
- Ephemeris: 15 days Comet C/2025 F2 (SWAN)'s computed ephemeris.
- Orbital elements: information about Comet C/2025 F2 (SWAN) orbital parameters.
- Orbit Visualization. 3d interactive visualization showing the orbit of Comet C/2025 F2 (SWAN) with respect to the major Solar System objects.