Observation details: asteroid Dione
Daily motion of Dione
106 Dione will remain visible until February 24, when it moves too close to the Sun and temporarily disappears from the night sky.
Dione visibility on 2026-08-18
106 Dione Visible from early morning until sunrise
Dione rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -29° |
| Astronomical observing session begins | 19:32 | -4° |
| Dione rise | 19:53 | |
| Moonset | 20:26 | 6° |
| Dione transit | 01:36 | 47° |
| Astronomical observing session ends | 02:51 | 44° |
| Twilight end | 03:26 | 40° |
| Civil sunrise | 03:59 | 36° |
| Sunrise | 04:28 | 32° |
| Dione set | 07:19 |
Track Dione Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Dione changing position in the night sky.
Dione Description
This asteroid is designated 106 Dione, main-belt asteroid Its diameter is approximately 208 km. 106 Dione completes an orbit around the Sun in 5.7 years. It is currently 1.917 AU (286,779,118 km) from Earth, and is located in the constellation Pisces.Current position in the Solar System: Dione
| Date | Tue, 18 August 2026 |
| Distance from Earth | 1.91231 AU (286,077,504km) |
| Elongation | 143° |
| Angular diameter | " |
| Magnitude | 12.1 |
Finder Chart for Dione
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| Object name | Dione |
| Field of view | |
| Limiting magnitude | |
| Dione coordinates | 0.27058, -5.20283 |
| Center coordinates | 0.27058, -5.20283 |
Annual motion of Dione
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 19:53 |
| Set | 07:19 |
| Elevation at transit | 47° |
| Transit time | 01:36 |
| Equatorial coordinates | RA: 00h 15m 56s", Dec: -5° 15' 19s |
| Magnitude | 12 |
| Constellation | Pisces |
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 106 Dione
Coordinates and Visibility
| Right Ascension | 0.27058° |
| Declination | -5.20283° |
| Magnitude | 12.2 |
| Constellation | Pisces |
| Elevation | 21.8° |
| Azimuth | 244.7° |
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.