Asteroid 354 Eleonora Observation Details
Eleonora Daily Motion
Eleonora will rise before twilight begins, at 17:32, and will reach 55° elevation by the time twilight commences at 23:04. It will reach its transit at 57° by 23:54 and gradually fade away as the night ends at 04:00, maintaining an elevation of around 26°.354 Eleonora will be visible until September, 24, 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.
Eleonora Visibility Timetable on June 14
Eleonora Rise and Set Timetable
| Time | Elevation | |
| Eleonora rise | 17:32 | |
| Sunset | 21:00 | 39° |
| Civil sunset | 21:34 | 44° |
| Astrosession begin | 23:04 | 55° |
| Moon Rise, 92% illuminated | 23:28 | 56° |
| Eleonora transit | 23:54 | 57° |
| Astrosession end | 04:00 | 26° |
| Civil sunrise | 05:29 | 9° |
| Sunrise | 06:04 | 2° |
| Eleonora set | 06:16 | |
| Moon Set | 08:49 | -27° |
Track Eleonora Position Throughout the Night
← Sat, 14 June 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Eleonora changing position in the night sky.
Eleonora Description
Eleonora, designated as 354 Eleonora, is a main-belt asteroid, located between Mars and Jupiter in the solar system. With a diameter of 148 km, 354 Eleonora completes its orbit around the Sun in 4.7 years. At the moment, 354 Eleonora is 1.929 AU (288,604,212 km) from Earth, and it is located in the constellation Serpens.Current position of Eleonora in Solar System
| Date | Sat, 14 June 2025 |
| Distance from Earth to Eleonora | 1.9292 AU (288,604,212km) |
| Elongation | 142° |
| Angular diameter | " |
| Magnitude | 10.4 |
Finder Chart for Eleonora
Double-click to unlock the map.
| Object name | 354 Eleonora |
| Field of view | |
| Limiting magnitude | |
| 354 Eleonora coordinates | 15.8844, 6.72586 |
| Center coordinates | 15.8844, 6.72586 |
Annual motion of Eleonora
| Date | Sun, 15 June 2025 |
| Twighlight start | 23:00 |
| Twighlight end | 03:54 |
| Twighlight duration | 5h 54m |
| Rise | 17:28 |
| Set | 06:11 |
| Elevation at transit | 57° |
| Transit time | 23:49 |
| Equatorial coordinates | RA: 15h 52m 26s", Dec: 06° 38' 52s |
| Magnitude | 10 |
| Constellation | Serpens |
The graph illustrates the annual visibility pattern of a Eleonora, 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 Eleonora 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 Eleonora 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.