Observation details: asteroid Nephthys
Daily motion of Nephthys
287 Nephthys will remain visible until December 29, when it moves too close to the Sun and temporarily disappears from the night sky.
Nephthys visibility on 2026-08-18
287 Nephthys Visible from sunset until early morning
Nephthys rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -69° |
| Nephthys rise | 16:41 | |
| Sunset | 17:55 | 13° |
| Civil sunset | 18:24 | 18° |
| Twilight start | 18:57 | 23° |
| Astronomical observing session begins | 19:32 | 27° |
| Moonset | 20:26 | 33° |
| Nephthys transit | 21:48 | 36° |
| Astronomical observing session ends | 02:51 | 1° |
| Nephthys set | 02:55 |
Track Nephthys Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Nephthys changing position in the night sky.
Nephthys Description
This asteroid is designated 287 Nephthys, main-belt asteroid Its diameter is approximately 60 km. 287 Nephthys completes an orbit around the Sun in 3.6 years. It is currently 1.337 AU (200,052,745 km) from Earth, and is located in the constellation Capricornus.Current position in the Solar System: Nephthys
| Date | Tue, 18 August 2026 |
| Distance from Earth | 1.33894 AU (200,302,573km) |
| Elongation | 160° |
| Angular diameter | " |
| Magnitude | 11.2 |
Finder Chart for Nephthys
Double-click to unlock the map.
| Object name | Nephthys |
| Field of view | |
| Limiting magnitude | |
| Nephthys coordinates | 20.46018, -16.32081 |
| Center coordinates | 20.46018, -16.32081 |
Annual motion of Nephthys
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 16:41 |
| Set | 02:55 |
| Elevation at transit | 36° |
| Transit time | 21:48 |
| Equatorial coordinates | RA: 20h 26m 52s", Dec: -16° 27' 33s |
| Magnitude | 11 |
| Constellation | Capricornus |
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 287 Nephthys
Coordinates and Visibility
| Right Ascension | 20.46018° |
| Declination | -16.32081° |
| Magnitude | 11.2 |
| Constellation | Capricornus |
| Elevation | -68.8° |
| Azimuth | 351.1° |
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.