Comet 123P/West-Hartley Observation Details
123P/West-Hartley Daily Motion
90001025 123P/West-Hartley will be visible until May, 2, 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.
123P/West-Hartley Visibility on April 14
90001025 123P/West-Hartley is visible from sunset through most of the night
123P/West-Hartley Rise and Set Timetable
| Time | Elevation | |
Moon Rise, 23.5% illuminated  | 02:31 | -20° |
| Moon Set | 13:49 | 80° |
| 123P/West-Hartley transit | 14:32 | 85° |
| Sunset | 17:40 | 51° |
| Civil sunset | 18:08 | 46° |
| Twighlight start | 18:40 | 40° |
| Astrosession begin | 19:13 | 33° |
| 123P/West-Hartley set | 22:26 | |
| Astrosession end | 03:02 | -20° |
| 123P/West-Hartley rise | 06:36 |
Track 123P/West-Hartley Position Throughout the Night
← Tue, 14 April 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe 123P/West-Hartley changing position in the night sky.
123P/West-Hartley Description
123P/West-Hartley, designated as 90001025 123P/West-Hartley, is an Encke-type comet. At the moment, 90001025 123P/West-Hartley is 2.964 AU (443,333,290 km) from Earth, and it is located in the constellation Auriga.Current position of 123P/West-Hartley in Solar System
| Date | Tue, 14 April 2026 |
| Distance from Earth to 123P/West-Hartley | 2.9653 AU (443,602,566km) |
| Elongation | 52° |
| Angular diameter | " |
| Magnitude | 17.9 |
Finder Chart for 123P/West-Hartley
Double-click to unlock the map.
| Object name | 90001025 123P/West-Hartley |
| Field of view | |
| Limiting magnitude | |
| 90001025 123P/West-Hartley coordinates | 4.87379, 32.21742 |
| Center coordinates | 4.87379, 32.21742 |
Annual motion of 123P/West-Hartley
| Date | Tue, 14 April 2026 |
| Twighlight start | 19:08 |
| Twighlight end | 02:57 |
| Twighlight duration | 8h 48m |
| Rise | 06:35 |
| Set | 22:23 |
| Elevation at transit | 85° |
| Transit time | 14:29 |
| Equatorial coordinates | RA: 04h 54m 17s", Dec: 32° 16' 14s |
| Magnitude | 18 |
| Constellation | Auriga |
The graph illustrates the annual visibility pattern of a 123P/West-Hartley, 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 123P/West-Hartley 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 123P/West-Hartley 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 90001025 123P/West-Hartley
Coordinates & Visibility
| Right Ascension | 4.87379° |
| Declination | 32.21742° |
| Magnitude | 17.9 |
| Constellation | Auriga |
| Elevation | 47.9° |
| Azimuth | -81.1° |
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.