Observation details: asteroid Ampella
Daily motion of Ampella
198 Ampella will remain visible until March 25, when it moves too close to the Sun and temporarily disappears from the night sky.
Ampella visibility on 2026-08-18
198 Ampella Visible from sunset until sunrise
Ampella rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -26° |
| Ampella rise | 17:51 | |
| Sunset | 17:55 | 1° |
| Civil sunset | 18:24 | 6° |
| Twilight start | 18:57 | 13° |
| Astronomical observing session begins | 19:32 | 20° |
| Moonset | 20:26 | 31° |
| Ampella transit | 00:32 | 66° |
| Astronomical observing session ends | 02:51 | 51° |
| Twilight end | 03:26 | 45° |
| Civil sunrise | 03:59 | 38° |
| Sunrise | 04:28 | 33° |
| Ampella set | 07:14 |
Track Ampella Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Ampella changing position in the night sky.
Ampella Description
This asteroid is designated 198 Ampella, main-belt asteroid Its diameter is approximately 54 km. 198 Ampella completes an orbit around the Sun in 3.9 years. It is currently 0.994 AU (148,646,428 km) from Earth, and is located in the constellation Pegasus.Current position in the Solar System: Ampella
| Date | Tue, 18 August 2026 |
| Distance from Earth | 0.9909 AU (148,236,530km) |
| Elongation | 146° |
| Angular diameter | " |
| Magnitude | 10.8 |
Finder Chart for Ampella
Double-click to unlock the map.
| Object name | Ampella |
| Field of view | |
| Limiting magnitude | |
| Ampella coordinates | 23.20289, 13.56275 |
| Center coordinates | 23.20289, 13.56275 |
Annual motion of Ampella
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 17:50 |
| Set | 07:14 |
| Elevation at transit | 66° |
| Transit time | 00:32 |
| Equatorial coordinates | RA: 23h 11m 38s", Dec: 13° 38' 35s |
| Magnitude | 11 |
| Constellation | Pegasus |
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 198 Ampella
Coordinates and Visibility
| Right Ascension | 23.20289° |
| Declination | 13.56275° |
| Magnitude | 10.8 |
| Constellation | Pegasus |
| Elevation | 21° |
| Azimuth | 271.3° |
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.