Observation details: asteroid Hygiea
Daily motion of Hygiea
10 Hygiea will remain visible until June 23, when it moves too close to the Sun and temporarily disappears from the night sky.
Hygiea visibility on 2026-10-18
Hygiea Visible from early morning until sunrise
Hygiea rise and set timetable
| Time | Elevation | |
| Hygiea transit | 07:40 | 61° |
Moonrise, 34.6% illuminated  | 11:59 | 25° |
| Hygiea set | 14:05 | |
| Astronomical observing session begins | 17:54 | -38° |
| Moonset | 21:28 | -37° |
| Hygiea rise | 01:12 | |
| Astronomical observing session ends | 03:51 | 32° |
| Twilight end (−12°) | 04:22 | 37° |
| Civil sunrise | 04:52 | 43° |
| Sunrise | 05:20 | 48° |
Track Hygiea position throughout the night
← 18 October 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Hygiea changing position in the night sky.
Hygiea Description
This asteroid is designated 10 Hygiea, main-belt asteroid Its diameter is approximately 408 km. 10 Hygiea completes an orbit around the Sun in 5.6 years. It is currently 3.683 AU (551,025,805 km) from Earth, and is located in the constellation Leo.Current position in the Solar System: Hygiea
| Date | Sun, 18 October 2026 |
| Distance from Earth | 3.67723 AU (550,105,778km) |
| Elongation | 52° |
| Angular diameter | " |
| Magnitude | 11.8 |
Finder Chart for
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| Object name | |
| Field of view | |
| Limiting magnitude | |
| coordinates | 10.27949, 8.6635 |
| Center coordinates | 10.27949, 8.6635 |
Annual motion of Hygiea
| Date | Sun, 18 October 2026 |
| Twilight start | 17:50 |
| Twilight end | 03:45 |
| Twilight duration | 10h 55m |
| Rise | 01:11 |
| Set | 14:02 |
| Elevation at transit | 61° |
| Transit time | 07:37 |
| Equatorial coordinates | RA: 10h 17m 55s", Dec: 08° 32' 18s |
| Magnitude | 12 |
| Constellation | Leo |
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 10 Hygiea
Coordinates and Visibility
| Right Ascension | 10h 16m 46s |
| Declination | 08° 39′ 49″ |
| Magnitude | 11.8 |
| Constellation | Leo |
| Elevation | 48.7° |
| Azimuth | 125.5° |
Physical properties
| Mean radius | 203.6 |
| Mass | 1.0E+20 |
| Density | 1 |
Orbital parameters
| Sidereal orbital period | 2029.776 |
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.