Asteroid 423 Diotima Observation Details
Diotima Daily Motion
Diotima rise at 13:59, and will be at 28° when twilight starts at 16:22. It will reach its transit at 66° at 20:40, and will set at 03:21, before twighlight ends at 03:30.423 Diotima will be visible until April, 11, 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.
Diotima Visibility Timetable on November 30
Diotima Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 67.1% illuminated | 11:21 | -27° |
| Diotima rise | 13:59 | |
| Sunset | 14:49 | 10° |
| Civil sunset | 15:19 | 16° |
| Astrosession begin | 16:22 | 28° |
| Diotima transit | 20:40 | 66° |
| Moon Set | 23:56 | 40° |
| Diotima set | 03:21 | |
| Astrosession end | 03:30 | -2° |
Track Diotima Position Throughout the Night
← Sun, 30 November 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Diotima changing position in the night sky.
Diotima Description
Diotima, designated as 423 Diotima, is a main-belt asteroid, located between Mars and Jupiter in the solar system. With a diameter of 176 km, 423 Diotima completes its orbit around the Sun in 5.4 years. At the moment, 423 Diotima is 2.206 AU (330,012,903 km) from Earth, and it is located in the constellation Aries.Current position of Diotima in Solar System
| Date | Sun, 30 November 2025 |
| Distance from Earth to Diotima | 2.206 AU (330,012,903km) |
| Elongation | 160° |
| Angular diameter | " |
| Magnitude | 12.07 |
Finder Chart for Diotima
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| Object name | 423 Diotima |
| Field of view | |
| Limiting magnitude | |
| 423 Diotima coordinates | 3.1645649459336, 13.457283916045 |
| Center coordinates | 3.1645649459336, 13.457283916045 |
Annual motion of Diotima
| Date | Mon, 1 December 2025 |
| Twighlight start | 16:18 |
| Twighlight end | 03:24 |
| Twighlight duration | 11h 6m |
| Rise | 13:54 |
| Set | 03:16 |
| Elevation at transit | 66° |
| Transit time | 20:35 |
| Equatorial coordinates | RA: 03h 09m 05s", Dec: 13° 27' 45s |
| Magnitude | 12 |
| Constellation | Aries |
The graph illustrates the annual visibility pattern of a Diotima, 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 Diotima 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 Diotima 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.
Astrometric & Physical Parameters of 423 Diotima
Coordinates & Visibility
| Right Ascension | 3.1645649459336° |
| Declination | 13.457283916045° |
| Magnitude | 12.07 |
| Constellation | Aries |
| Elevation | 18.4° |
| Azimuth | 86.8° |
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.