Observation details: asteroid Thalia
Daily motion of Thalia
23 Thalia will remain visible until January 31, when it moves too close to the Sun and temporarily disappears from the night sky.
Thalia visibility on 2026-10-03
Thalia Visible from evening until early morning
Thalia rise and set timetable
| Time | Elevation | |
| Thalia rise | 16:41 | |
| Sunset | 16:47 | 1° |
| Civil sunset | 17:15 | 6° |
| Twilight start (−12°) | 17:45 | 11° |
| Astronomical observing session begins | 18:15 | 16° |
Moonrise, 56.5% illuminated  | 21:14 | 32° |
| Thalia transit | 21:36 | 33° |
| Thalia set | 02:31 | |
| Astronomical observing session ends | 03:38 | -13° |
| Moonset | 12:53 | -43° |
Track Thalia position throughout the night
← 3 October 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Thalia changing position in the night sky.
Thalia Description
This asteroid is designated 23 Thalia, main-belt asteroid Its diameter is approximately 108 km. 23 Thalia completes an orbit around the Sun in 4.3 years. It is currently 2.092 AU (312,958,746 km) from Earth, and is located in the constellation Aquarius.Current position in the Solar System: Thalia
| Date | Sat, 3 October 2026 |
| Distance from Earth | 2.092 AU (312,958,746km) |
| Elongation | 149° |
| Angular diameter | " |
| Magnitude | 11.7 |
Finder Chart for
Annual motion of Thalia
| Date | Sun, 4 October 2026 |
| Twilight start | 18:13 |
| Twilight end | 03:36 |
| Twilight duration | 9h 23m |
| Rise | 16:37 |
| Set | 02:26 |
| Elevation at transit | 33° |
| Transit time | 21:32 |
| Equatorial coordinates | RA: 23h 16m 03s", Dec: -19° 59' 54s |
| Magnitude | 12 |
| Constellation | Aquarius |
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 23 Thalia
Coordinates and Visibility
| Right Ascension | 23h 16m 50s |
| Declination | -19° 58′ 39″ |
| Magnitude | 11.7 |
| Constellation | Aquarius |
| Elevation | 20.5° |
| Azimuth | 138.1° |
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.