Comet C/2026 H2 (Leonard) Observation Details
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C/2026 H2 (Leonard) Daily Motion
90004959 C/2026 H2 (Leonard) will be visible until September, 6, 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/2026 H2 (Leonard) Visibility on July 18
90004959 C/2026 H2 (Leonard) is visible from sunset through most of the night
C/2026 H2 (Leonard) Rise and Set Timetable
| Time | Elevation | |
Moon Rise, 9.3% illuminated  | 07:47 | -39° |
| C/2026 H2 (Leonard) rise | 11:52 | |
| C/2026 H2 (Leonard) transit | 18:22 | 63° |
| Sunset | 18:25 | 63° |
| Civil sunset | 18:57 | 62° |
| Twighlight start | 19:34 | 58° |
| Astrosession begin | 20:14 | 53° |
| Moon Set | 20:45 | 48° |
| C/2026 H2 (Leonard) set | 00:52 | |
| Astrosession end | 02:13 | -15° |
Track C/2026 H2 (Leonard) Position Throughout the Night
← Sat, 18 July 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe C/2026 H2 (Leonard) changing position in the night sky.
C/2026 H2 (Leonard) Description
C/2026 H2 (Leonard), designated as 90004959 C/2026 H2 (Leonard), is a comet on a hyperbolic (unbound) trajectory. At the moment, 90004959 C/2026 H2 (Leonard) is 4.323 AU (646,678,684 km) from Earth, and it is located in the constellation Bootes.Current position of C/2026 H2 (Leonard) in Solar System
| Date | Sat, 18 July 2026 |
| Distance from Earth to C/2026 H2 (Leonard) | 4.33356 AU (648,291,349km) |
| Elongation | 102° |
| Angular diameter | " |
| Magnitude | 19.7 |
Finder Chart for C/2026 H2 (Leonard)
Double-click to unlock the map.
| Object name | 90004959 C/2026 H2 (Leonard) |
| Field of view | |
| Limiting magnitude | |
| 90004959 C/2026 H2 (Leonard) coordinates | 14.98774, 10.03394 |
| Center coordinates | 14.98774, 10.03394 |
Annual motion of C/2026 H2 (Leonard)
| Date | Sat, 18 July 2026 |
| Twighlight start | 20:10 |
| Twighlight end | 02:07 |
| Twighlight duration | 6h 57m |
| Rise | 11:52 |
| Set | 00:52 |
| Elevation at transit | 63° |
| Transit time | 18:22 |
| Equatorial coordinates | RA: 14h 58m 22s", Dec: 09° 56' 08s |
| Magnitude | 20 |
| Constellation | Bootes |
The graph illustrates the annual visibility pattern of a C/2026 H2 (Leonard), 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/2026 H2 (Leonard) 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/2026 H2 (Leonard) 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 90004959 C/2026 H2 (Leonard)
Coordinates & Visibility
| Right Ascension | 14.98774° |
| Declination | 10.03394° |
| Magnitude | 19.7 |
| Constellation | Bootes |
| Elevation | -42.1° |
| Azimuth | 350.3° |
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.