Comet 90004854 C/2024 J4 (Lemmon) Observation Details
/90004854 C/2024 J4 (Lemmon).png)
C/2024 J4 (Lemmon) Daily Motion
90004854 C/2024 J4 (Lemmon) will be visible until September, 18, 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/2024 J4 (Lemmon) Visibility Timetable on July 02
C/2024 J4 (Lemmon) Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 39.4% illuminated | 12:41 | -12° |
| C/2024 J4 (Lemmon) rise | 14:10 | |
| Sunset | 21:03 | 74° |
| Civil sunset | 21:37 | 77° |
| C/2024 J4 (Lemmon) transit | 21:51 | 77° |
| Astrosession begin | 23:06 | 70° |
| Moon Set | 00:53 | 50° |
| Astrosession end | 04:05 | 14° |
| C/2024 J4 (Lemmon) set | 05:33 |
Track C/2024 J4 (Lemmon) Position Throughout the Night
← Wed, 2 July 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe C/2024 J4 (Lemmon) changing position in the night sky.
C/2024 J4 (Lemmon) Description
C/2024 J4 (Lemmon), designated as 90004854 C/2024 J4 (Lemmon), is a Jupiter-family comet. At the moment, 90004854 C/2024 J4 (Lemmon) is 5.343 AU (799,316,383 km) from Earth, and it is located in the constellation Bootes.Current position of C/2024 J4 (Lemmon) in Solar System
| Date | Wed, 2 July 2025 |
| Distance from Earth to C/2024 J4 (Lemmon) | 5.3505 AU (800,423,407km) |
| Elongation | 106° |
| Angular diameter | " |
| Magnitude | 19.1 |
Finder Chart for C/2024 J4 (Lemmon)
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| Object name | 90004854 C/2024 J4 (Lemmon) |
| Field of view | |
| Limiting magnitude | |
| 90004854 C/2024 J4 (Lemmon) coordinates | 15.03061, 27.46619 |
| Center coordinates | 15.03061, 27.46619 |
Annual motion of C/2024 J4 (Lemmon)
| Date | Wed, 2 July 2025 |
| Twighlight start | 23:02 |
| Twighlight end | 04:00 |
| Twighlight duration | 5h 58m |
| Rise | 14:10 |
| Set | 05:32 |
| Elevation at transit | 77° |
| Transit time | 21:51 |
| Equatorial coordinates | RA: 15h 00m 59s", Dec: 27° 19' 03s |
| Magnitude | 19 |
| Constellation | Bootes |
The graph illustrates the annual visibility pattern of a C/2024 J4 (Lemmon), 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/2024 J4 (Lemmon) 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.
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/2024 J4 (Lemmon) 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.
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.