Comet C/2025 L1 (ATLAS) Observation Details
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C/2025 L1 (ATLAS) Daily Motion
90004919 C/2025 L1 (ATLAS) will be visible until August, 30, when it will move too close to the Sun. During this time, its proximity to the Sun will cause it to disappear from the night sky, making it unobservable for a while.
C/2025 L1 (ATLAS) Visibility on May 04
90004919 C/2025 L1 (ATLAS) is visible all night until sunrise
C/2025 L1 (ATLAS) Rise and Set Timetable
| Time | Elevation | |
| Sunset | 17:58 | 56° |
| Civil sunset | 18:27 | 61° |
| Twighlight start | 19:02 | 66° |
| Astrosession begin | 19:38 | 70° |
Moon Rise, 95.1% illuminated  | 20:27 | 75° |
| C/2025 L1 (ATLAS) transit | 20:52 | 75° |
| Astrosession end | 02:30 | 31° |
| Twighlight end | 03:06 | 26° |
| Civil sunrise | 03:41 | 22° |
| Sunrise | 04:10 | 18° |
| Moon Set | 05:40 | 9° |
| C/2025 L1 (ATLAS) set | 08:07 | |
| C/2025 L1 (ATLAS) rise | 09:21 |
Track C/2025 L1 (ATLAS) Position Throughout the Night
← Mon, 4 May 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
C/2025 L1 (ATLAS), designated as 90004919 C/2025 L1 (ATLAS), is a comet on a hyperbolic (unbound) trajectory. At the moment, 90004919 C/2025 L1 (ATLAS) is 1.709 AU (255,722,600 km) from Earth, and it is located in the constellation Canes Venatici.Current position of C/2025 L1 (ATLAS) in Solar System
| Date | Mon, 4 May 2026 |
| Distance from Earth to C/2025 L1 (ATLAS) | 1.7103 AU (255,857,238km) |
| Elongation | 106° |
| Angular diameter | " |
| Magnitude | 17 |
Finder Chart for C/2025 L1 (ATLAS)
Double-click to unlock the map.
| Object name | 90004919 C/2025 L1 (ATLAS) |
| Field of view | |
| Limiting magnitude | |
| 90004919 C/2025 L1 (ATLAS) coordinates | 12.54846, 52.15689 |
| Center coordinates | 12.54846, 52.15689 |
Annual motion of C/2025 L1 (ATLAS)
| Date | Tue, 5 May 2026 |
| Twighlight start | 19:38 |
| Twighlight end | 02:27 |
| Twighlight duration | 7h 49m |
| Rise | 09:22 |
| Set | 08:08 |
| Elevation at transit | 75° |
| Transit time | 20:45 |
| Equatorial coordinates | RA: 12h 29m 55s", Dec: 52° 19' 00s |
| Magnitude | 17 |
| Constellation | Ursa Major |
The graph illustrates the annual visibility pattern of a C/2025 L1 (ATLAS), providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the C/2025 L1 (ATLAS) is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit. You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the C/2025 L1 (ATLAS) is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit. You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
Astrometric & Physical Parameters of 90004919 C/2025 L1 (ATLAS)
Coordinates & Visibility
| Right Ascension | 12.54846° |
| Declination | 52.15689° |
| Magnitude | 17 |
| Constellation | Canes Venatici |
| Elevation | 62.6° |
| Azimuth | -46.6° |
Acknowledgments
We acknowledge NASA's Jet Propulsion Laboratory (JPL) for providing essential data on asteroids and comets through their Small-Body Database (SBDB) and Center for Near-Earth Object Studies (CNEOS). Their continuous efforts in tracking and cataloging these celestial bodies make it possible to offer accurate and up-to-date information on their positions, orbits, and physical characteristics.