Observation details: asteroid Kleopatra
Daily motion of Kleopatra
216 Kleopatra will remain visible until November 11, when it moves too close to the Sun and temporarily disappears from the night sky.
Kleopatra visibility on 2026-08-18
216 Kleopatra Visible from sunset until early morning
Kleopatra rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -41° |
| Kleopatra rise | 13:20 | |
| Sunset | 17:55 | 42° |
| Civil sunset | 18:24 | 44° |
| Kleopatra transit | 18:54 | 45° |
| Twilight start | 18:57 | 45° |
| Astronomical observing session begins | 19:32 | 44° |
| Moonset | 20:26 | 40° |
| Kleopatra set | 00:28 | |
| Astronomical observing session ends | 02:51 | -28° |
Track Kleopatra Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Kleopatra changing position in the night sky.
Kleopatra Description
This asteroid is designated 216 Kleopatra, main-belt asteroid Its diameter is approximately 122 km. 216 Kleopatra completes an orbit around the Sun in 4.7 years. It is currently 2.306 AU (345,032,529 km) from Earth, and is located in the constellation Ophiuchus.Current position in the Solar System: Kleopatra
| Date | Tue, 18 August 2026 |
| Distance from Earth | 2.31033 AU (345,620,449km) |
| Elongation | 117° |
| Angular diameter | " |
| Magnitude | 11.9 |
Finder Chart for Kleopatra
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| Object name | Kleopatra |
| Field of view | |
| Limiting magnitude | |
| Kleopatra coordinates | 17.54994, -8.08467 |
| Center coordinates | 17.54994, -8.08467 |
Annual motion of Kleopatra
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 13:16 |
| Set | 00:24 |
| Elevation at transit | 45° |
| Transit time | 18:50 |
| Equatorial coordinates | RA: 17h 33m 02s", Dec: -8° 08' 21s |
| Magnitude | 12 |
| Constellation | Ophiuchus |
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 216 Kleopatra
Coordinates and Visibility
| Right Ascension | 17.54994° |
| Declination | -8.08467° |
| Magnitude | 11.9 |
| Constellation | Ophiuchus |
| Elevation | -51.6° |
| Azimuth | 47.4° |
Physical properties
| Mass | 3.0E+18 |
| Density | 1 |
Orbital parameters
| Sidereal orbital period | 1707 |
Data acknowledgment
Physical and orbital parameters come from the Solar System OpenData API , maintained by Le Système Solaire. We thank its contributors for making these data available.
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.