Observation details: asteroid Eleonora
Daily motion of Eleonora
354 Eleonora will remain visible until December 19, when it moves too close to the Sun and temporarily disappears from the night sky.
Eleonora visibility on 2026-08-18
354 Eleonora Visible from sunset until sunrise
Eleonora rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -63° |
| Eleonora rise | 17:49 | |
| Sunset | 17:55 | 1° |
| Civil sunset | 18:24 | 6° |
| Twilight start | 18:57 | 12° |
| Astronomical observing session begins | 19:32 | 18° |
| Moonset | 20:26 | 26° |
| Eleonora transit | 23:00 | 37° |
| Astronomical observing session ends | 02:51 | 14° |
| Twilight end | 03:26 | 8° |
| Civil sunrise | 03:59 | 2° |
| Eleonora set | 04:11 |
Track Eleonora Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Eleonora changing position in the night sky.
Eleonora Description
This asteroid is designated 354 Eleonora, main-belt asteroid Its diameter is approximately 148 km. 354 Eleonora completes an orbit around the Sun in 4.7 years. It is currently 2.101 AU (314,273,711 km) from Earth, and is located in the constellation Capricornus.Current position in the Solar System: Eleonora
| Date | Tue, 18 August 2026 |
| Distance from Earth | 2.10122 AU (314,338,038km) |
| Elongation | 177° |
| Angular diameter | " |
| Magnitude | 10.4 |
Finder Chart for Eleonora
Double-click to unlock the map.
| Object name | Eleonora |
| Field of view | |
| Limiting magnitude | |
| Eleonora coordinates | 21.66396, -15.26114 |
| Center coordinates | 21.66396, -15.26114 |
Annual motion of Eleonora
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 17:49 |
| Set | 04:10 |
| Elevation at transit | 37° |
| Transit time | 23:00 |
| Equatorial coordinates | RA: 21h 39m 03s", Dec: -15° 24' 29s |
| Magnitude | 10 |
| Constellation | Capricornus |
The graph summarizes the object’s annual visibility, daily observing windows and transit times.
The vertical axis shows time of day and the horizontal axis shows the days of the year.
The shaded area marks when the object is above the horizon; the white line marks daily transit. You can also view the detailed annual visibility table.
The vertical axis shows time of day and the horizontal axis shows the days of the year.
The shaded area marks when the object is above the horizon; the white line marks daily transit. You can also view the detailed annual visibility table.
Astrometric and Physical Parameters of 354 Eleonora
Coordinates and Visibility
| Right Ascension | 21.66396° |
| Declination | -15.26114° |
| Magnitude | 10.4 |
| Constellation | Capricornus |
| Elevation | -51.6° |
| Azimuth | 295.4° |
Acknowledgments
Orbital and small-body data are provided by NASA Jet Propulsion Laboratory (JPL) Small-Body Database (SBDB) and Center for Near-Earth Object Studies (CNEOS). These resources support accurate positions, orbits and physical characteristics.