Asteroid 7 Iris Observation Details
Iris Daily Motion
Tonight, observing Iris may prove challenging owing to its low elevation. It will reach its transit at by 11:12 and set before sunset at 17:11. Rising near twilight's end at 05:11, it will fade away by 05:50, peaking at just 9° above the horizon.7 Iris will become visible in September, 19. After being too close to the Sun to observe, it will reappear in the night sky. Starting from September, 19, 7 Iris can be seen again, providing a good opportunity for observation.
Iris Visibility Timetable on August 12
Iris Rise and Set Timetable
| Time | Elevation | |
| Iris transit | 11:12 | 70° |
| Iris set | 17:11 | |
| Astrosession begin | 20:19 | -43° |
| Moon Rise, 85% illuminated | 21:53 | -62° |
| Iris rise | 05:11 | |
| Astrosession end | 05:50 | 9° |
| Civil sunrise | 06:40 | 21° |
| Sunrise | 07:02 | 26° |
| Moon Set | 10:17 | 66° |
Track Iris Position Throughout the Night
← Tue, 12 August 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 2.837 AU (424,409,159 km) from Earth, and it is located in the constellation Gemini.Current position of Iris in Solar System
| Date | Tue, 12 August 2025 |
| Distance from Earth to Iris | 2.837 AU (424,409,159km) |
| Elongation | 27° |
| Angular diameter | " |
| Magnitude | 10.21 |
Finder Chart for Iris
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| Object name | 7 Iris |
| Field of view | |
| Limiting magnitude | |
| 7 Iris coordinates | 7.6101081270278, 20.259363217841 |
| Center coordinates | 7.6101081270278, 20.259363217841 |
Annual motion of Iris
| Date | Wed, 13 August 2025 |
| Twighlight start | 20:16 |
| Twighlight end | 05:45 |
| Twighlight duration | 9h 29m |
| Rise | 05:11 |
| Set | 17:09 |
| Elevation at transit | 70° |
| Transit time | 11:10 |
| Equatorial coordinates | RA: 07h 38m 53s", Dec: 20° 08' 35s |
| Magnitude | 10 |
| Constellation | Gemini |
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.