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Comet Comet C/2025 E1

Below the horizon.  Rise: 12:42 | Tran: 16:51 | Set: 21:00
Alt: -37.29°   Az: 74.80°   Direction: East-North-East

Comet Comet C/2025 E1 is in the constellation of Hydra, at a distance of 857,949,270.0 kilometers from Earth. The current Right Ascension is 10h 23m 45s and the Declination is -20° 07’ 56” (apparent coordinates). The estimated magnitude of comet Comet C/2025 E1, computed using JPL Horizons's data, is 20.23).

Finder Charts

The sky charts below show, at different resolutions, the position of comet Comet C/2025 E1 in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet Comet C/2025 E1 in the constellation of Hydra on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet Comet C/2025 E1 in the constellation of Hydra 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 Comet C/2025 E1 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.

Comet C/2025 E1
RA: 10h 22m 32s
Dec: -20° 00’ 10”
Simplified high-resolution deep sky chart showing the current position of comet Comet C/2025 E1. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

10h 23m 45s
-20° 07’ 56”
15h 39m 24s
02h 03m 10s

J2000

10h 22m 32s
-20° 00’ 10”

Additional Information

Hydra
n/a
n/a
n/a
n/a
20.23

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 Comet C/2025 E1 from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 110.1°
Max altitude: 18.4°
Azimuth: 249.8°

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 Comet C/2025 E1 from Earth is currently 857,949,270.0 kilometers, equivalent to 5.7350366418 Astronomical Units. Light takes 47m 41.811s to travel from comet Comet C/2025 E1 and arrive to us.

857,949,270.0
5.7350366418
47m 41.811s

The following graph shows the distance of comet Comet C/2025 E1 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 Comet C/2025 E1 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 Comet C/2025 E1 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 Comet C/2025 E1 to Earth will happen on Saturday 25 April 2026 at a distance of 3.812485 Astronomical Units, or 570,339,640 kilometers:

Saturday 25 April 2026
570,339,640
3.812485

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 Comet C/2025 E1, 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 Comet C/2025 E1 as a function of time

Orbital Elements

The following table lists the orbital elements of comet Comet C/2025 E1 at epoch February, 11 2025 00:00 UTC (JD: 2460718.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99853985
Orbit inclination i 69.07528874°
Perihelion distance q 3.99435277 AU
597,546,671 km
Aphelion distance Q 5,467.15961358 AU
817,875,438,609 km
Semi-major axis a 2,735.57698318 AU
409,236,492,640 km
Orbital period period 143,080.8837 years
52,260,292.7640 days
Date of perihelion transit Tp September 23, 2026
2,461,306.9736 JD
Argument of perihelion peri 274.46229846236°
Longitude of the ascending node node 344.60132943116°
Mean anomaly M 359.99594624375°
Mean motion n 0.00000689°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet Comet C/2025 E1 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 Comet C/2025 E1 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 22 2025 10h 21m 49s -19° 52’ 08” 20.25 Hydra
Jun 23 2025 10h 22m 03s -19° 54’ 01” 20.25 Hydra
Jun 24 2025 10h 22m 18s -19° 56’ 00” 20.25 Hydra
Jun 25 2025 10h 22m 33s -19° 58’ 04” 20.24 Hydra
Jun 26 2025 10h 22m 49s -20° 00’ 13” 20.24 Hydra
Jun 27 2025 10h 23m 06s -20° 02’ 27” 20.24 Hydra
Jun 28 2025 10h 23m 23s -20° 04’ 46” 20.24 Hydra
Jun 29 2025 10h 23m 40s -20° 07’ 09” 20.23 Hydra
Jun 30 2025 10h 23m 58s -20° 09’ 39” 20.23 Hydra
Jul 01 2025 10h 24m 17s -20° 12’ 13” 20.23 Hydra
Jul 02 2025 10h 24m 36s -20° 14’ 52” 20.23 Hydra
Jul 03 2025 10h 24m 56s -20° 17’ 35” 20.22 Hydra
Jul 04 2025 10h 25m 16s -20° 20’ 25” 20.22 Hydra
Jul 05 2025 10h 25m 37s -20° 23’ 19” 20.22 Hydra

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