Asteroid 7 Iris Observation Details
Iris Daily Motion
Iris will not be observable tonight. It will reach its transit at 72° by 13:37 and set at 20:55. Throughout the night, from 22:44 to 04:13, it will be below the horizon. Iris will rise again after sunrise, at 06:17.7 Iris will become visible in September, 20. After being too close to the Sun to observe, it will reappear in the night sky. Starting from September, 20, 7 Iris can be seen again, providing a good opportunity for observation.
Iris Visibility Timetable on May 25
Iris Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 11.4% illuminated | 04:09 | -19° |
| Iris transit | 13:37 | 72° |
| Moon Set | 18:12 | 30° |
| Sunset | 20:47 | 1° |
| Iris set | 20:55 | |
| Astrosession begin | 22:44 | -16° |
| Astrosession end | 04:13 | -18° |
| Iris rise | 06:17 |
Track Iris Position Throughout the Night
← Sun, 25 May 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Iris changing position in the night sky.
Iris Description
Iris, designated as 7 Iris, is a main-belt asteroid, located between Mars and Jupiter in the solar system. With a diameter of 200 km, 7 Iris completes its orbit around the Sun in 3.7 years. At the moment, 7 Iris is 2.874 AU (429,944,280 km) from Earth, and it is located in the constellation Taurus.Current position of Iris in Solar System
| Date | Sun, 25 May 2025 |
| Distance from Earth to Iris | 2.875 AU (430,093,878km) |
| Elongation | 2° |
| Angular diameter | " |
| Magnitude | 9.49 |
Finder Chart for Iris
Double-click to unlock the map.
| Object name | 7 Iris |
| Field of view | |
| Limiting magnitude | |
| 7 Iris coordinates | 4.243163402777, 22.016072219407 |
| Center coordinates | 4.243163402777, 22.016072219407 |
Annual motion of Iris
| Date | Sun, 25 May 2025 |
| Twighlight start | 22:39 |
| Twighlight end | 04:08 |
| Twighlight duration | 5h 29m |
| Rise | 06:16 |
| Set | 20:53 |
| Elevation at transit | 72° |
| Transit time | 13:35 |
| Equatorial coordinates | RA: 04h 17m 13s", Dec: 22° 05' 51s |
| Magnitude | 9 |
| Constellation | Taurus |
The graph illustrates the annual visibility pattern of a Iris, 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 Iris 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 Iris 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.
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.