Observation details: comet C/2025 L1 (ATLAS)
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Daily motion of C/2025 L1 (ATLAS)
90004930 C/2025 L1 (ATLAS) will remain visible until April 16, when it moves too close to the Sun and temporarily disappears from the night sky.
C/2025 L1 (ATLAS) visibility on 2026-09-21
C/2025 L1 (ATLAS) Visible from before midnight until sunrise
C/2025 L1 (ATLAS) rise and set timetable
| Time | Elevation | |
Moonrise, 60.8% illuminated  | 14:04 | -18° |
| Astronomical observing session begins | 18:34 | -18° |
| C/2025 L1 (ATLAS) rise | 20:44 | |
| Moonset | 23:40 | 32° |
| Astronomical observing session ends | 03:27 | 76° |
| Twilight end (−12°) | 03:58 | 79° |
| C/2025 L1 (ATLAS) transit | 04:18 | 80° |
| Civil sunrise | 04:28 | 80° |
| Sunrise | 04:56 | 77° |
Track C/2025 L1 (ATLAS) position throughout the night
← 21 September 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe C/2025 L1 (ATLAS) changing position in the night sky.
C/2025 L1 (ATLAS) Description
This comet is designated 90004930 C/2025 L1 (ATLAS), hyperbolic comet. It is currently 4.966 AU (742,888,066 km) from Earth, and is located in the constellation Taurus.Current position in the Solar System: C/2025 L1 (ATLAS)
| Date | Mon, 21 September 2026 |
| Distance from Earth | AU (0km) |
| Elongation | 0° |
| Angular diameter | " |
| Magnitude |
Finder Chart for
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| Object name | |
| Field of view | |
| Limiting magnitude | |
| coordinates | 5.20107, 27.676 |
| Center coordinates | 5.20107, 27.676 |
Annual motion of C/2025 L1 (ATLAS)
| Date | Mon, 21 September 2026 |
| Twilight start | 18:30 |
| Twilight end | 03:21 |
| Twilight duration | 9h 50m |
| Rise | 20:44 |
| Set | 11:51 |
| Elevation at transit | 80° |
| Transit time | 04:18 |
| Equatorial coordinates | RA: 05h 11m 59s", Dec: 27° 41' 22s |
| Magnitude | 24 |
| Constellation | Taurus |
The graph summarizes the object’s annual visibility, daily observing windows and transit times.
The vertical axis shows time of day and the horizontal axis shows the days of the year.
The shaded area marks when the object is above the horizon; the white line marks daily transit. You can also view the detailed annual visibility table.
The vertical axis shows time of day and the horizontal axis shows the days of the year.
The shaded area marks when the object is above the horizon; the white line marks daily transit. You can also view the detailed annual visibility table.
Astrometric and Physical Parameters of 90004930 C/2025 L1 (ATLAS)
Coordinates and Visibility
| Right Ascension | 05h 12m 04s |
| Declination | 27° 40′ 34″ |
| Magnitude | 24.4 |
| Constellation | Taurus |
| Elevation | 34° |
| Azimuth | 280.9° |
Acknowledgments
Orbital and small-body data are provided by NASA Jet Propulsion Laboratory (JPL) Small-Body Database (SBDB) and Center for Near-Earth Object Studies (CNEOS). These resources support accurate positions, orbits and physical characteristics.