Asteroid 5 Astraea Observation Details
Astraea Daily Motion
5 Astraea will be visible until September, 9, when it will move too close to the Sun. During this time, its proximity to the Sun will cause it to disappear from the night sky, making it unobservable for a while.
Astraea Visibility Timetable on September 05
Astraea Rise and Set Timetable
| Time | Elevation | |
| Astraea rise | 11:59 | |
| Moon Rise, 91% illuminated | 16:05 | 33° |
| Astraea transit | 17:00 | 34° |
| Sunset | 17:30 | 34° |
| Civil sunset | 17:58 | 33° |
| Astrosession begin | 19:01 | 27° |
| Astraea set | 22:01 | |
| Moon Set | 02:13 | -49° |
| Astrosession end | 03:11 | -60° |
Track Astraea Position Throughout the Night
← Fri, 5 September 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Astraea changing position in the night sky.
Astraea Description
Astraea, designated as 5 Astraea, is a main-belt asteroid, located between Mars and Jupiter in the solar system. With a diameter of 106 km, 5 Astraea completes its orbit around the Sun in 4.1 years. At the moment, 5 Astraea is 2.651 AU (396,539,076 km) from Earth, and it is located in the constellation Ophiuchus.Current position of Astraea in Solar System
| Date | Fri, 5 September 2025 |
| Distance from Earth to Astraea | 2.6558 AU (397,302,025km) |
| Elongation | 91° |
| Angular diameter | " |
| Magnitude | 12.4 |
Finder Chart for Astraea
Double-click to unlock the map.
| Object name | 5 Astraea |
| Field of view | |
| Limiting magnitude | |
| 5 Astraea coordinates | 16.83154, -18.16517 |
| Center coordinates | 16.83154, -18.16517 |
Annual motion of Astraea
| Date | Fri, 5 September 2025 |
| Twighlight start | 18:57 |
| Twighlight end | 03:05 |
| Twighlight duration | 8h 8m |
| Rise | 11:55 |
| Set | 21:57 |
| Elevation at transit | 34° |
| Transit time | 16:56 |
| Equatorial coordinates | RA: 16h 50m 44s", Dec: -18° 13' 27s |
| Magnitude | 12 |
| Constellation | Ophiuchus |
The graph illustrates the annual visibility pattern of a Astraea, providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the Astraea is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the Astraea is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
Astrometric & Physical Parameters of 5 Astraea
Coordinates & Visibility
| Right Ascension | 16.83154° |
| Declination | -18.16517° |
| Magnitude | 12.4 |
| Constellation | Ophiuchus |
| Elevation | -21.8° |
| Azimuth | -96.7° |
Physical properties
| Mean radius in kilometres | 59.5 |
| Boby mass in kg | 1.2E+18 |
| Body density in g.cm3 | 1 |
Orbital Parameters
| Sideral orbital time for body around another one (the Sun or a planet) in earth day | 1507.279 |
Data Acknowledgment
Our solar system data—including planetary physical and orbital parameters—comes from the Solar System OpenData API , maintained by Le Système Solaire. We thank Christophe and the contributors for making this open data available.
Acknowledgments
We acknowledge NASA's Jet Propulsion Laboratory (JPL) for providing essential data on asteroids and comets through their Small-Body Database (SBDB) and Center for Near-Earth Object Studies (CNEOS). Their continuous efforts in tracking and cataloging these celestial bodies make it possible to offer accurate and up-to-date information on their positions, orbits, and physical characteristics.