Comet C/2025 R1 (ATLAS) Observation Details
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C/2025 R1 (ATLAS) Daily Motion
90004929 C/2025 R1 (ATLAS) will be visible until September, 9, 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 R1 (ATLAS) Visibility on July 09
90004929 C/2025 R1 (ATLAS) is visible nearly all night until morning twilight
C/2025 R1 (ATLAS) Rise and Set Timetable
| Time | Elevation | |
| C/2025 R1 (ATLAS) rise | 13:26 | |
| Sunset | 18:29 | 56° |
| Civil sunset | 19:01 | 59° |
| Twighlight start | 19:39 | 61° |
| C/2025 R1 (ATLAS) transit | 19:52 | 62° |
| Astrosession begin | 20:22 | 61° |
Moon Rise, 37% illuminated  | 23:11 | 37° |
| Astrosession end | 02:04 | 3° |
| C/2025 R1 (ATLAS) set | 02:19 | |
| Moon Set | 13:51 | 6° |
Track C/2025 R1 (ATLAS) Position Throughout the Night
← Thu, 9 July 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe C/2025 R1 (ATLAS) changing position in the night sky.
C/2025 R1 (ATLAS) Description
C/2025 R1 (ATLAS), designated as 90004929 C/2025 R1 (ATLAS), is a Jupiter-family comet. At the moment, 90004929 C/2025 R1 (ATLAS) is 2.624 AU (392,574,732 km) from Earth, and it is located in the constellation Serpens.Current position of C/2025 R1 (ATLAS) in Solar System
| Date | Thu, 9 July 2026 |
| Distance from Earth to C/2025 R1 (ATLAS) | 2.6242 AU (392,574,732km) |
| Elongation | 122° |
| Angular diameter | " |
| Magnitude | 21.2 |
Finder Chart for C/2025 R1 (ATLAS)
Double-click to unlock the map.
| Object name | 90004929 C/2025 R1 (ATLAS) |
| Field of view | |
| Limiting magnitude | |
| 90004929 C/2025 R1 (ATLAS) coordinates | 15.89364, 8.94647 |
| Center coordinates | 15.89364, 8.94647 |
Annual motion of C/2025 R1 (ATLAS)
| Date | Fri, 10 July 2026 |
| Twighlight start | 20:16 |
| Twighlight end | 01:59 |
| Twighlight duration | 6h 42m |
| Rise | 13:22 |
| Set | 02:13 |
| Elevation at transit | 61° |
| Transit time | 19:47 |
| Equatorial coordinates | RA: 15h 52m 20s", Dec: 08° 38' 16s |
| Magnitude | 21 |
| Constellation | Serpens |
The graph illustrates the annual visibility pattern of a C/2025 R1 (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 R1 (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 R1 (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 90004929 C/2025 R1 (ATLAS)
Coordinates & Visibility
| Right Ascension | 15.89364° |
| Declination | 8.94647° |
| Magnitude | 21.2 |
| Constellation | Serpens |
| Elevation | -5° |
| Azimuth | 285.2° |
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.