Asteroid 7 Iris Observation Details
Iris Daily Motion
7 Iris will be visible until June, 19, 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.
Iris Visibility Timetable on October 08
Iris Rise and Set Timetable
| Time | Elevation | |
| Iris transit | 07:31 | 64° |
| Iris set | 14:07 | |
| Moon Rise, 98.7% illuminated | 16:55 | -29° |
| Astrosession begin | 18:07 | -37° |
| Iris rise | 00:54 | |
| Astrosession end | 03:43 | 34° |
| Civil sunrise | 04:43 | 45° |
| Sunrise | 05:11 | 50° |
| Moon Set | 07:05 | 64° |
Track Iris Position Throughout the Night
← Wed, 8 October 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 2.561 AU (383,120,147 km) from Earth, and it is located in the constellation Leo.Current position of Iris in Solar System
| Date | Wed, 8 October 2025 |
| Distance from Earth to Iris | 2.559 AU (382,820,951km) |
| Elongation | 54° |
| Angular diameter | " |
| Magnitude | 10.42 |
Finder Chart for Iris
Double-click to unlock the map.
| Object name | 7 Iris |
| Field of view | |
| Limiting magnitude | |
| 7 Iris coordinates | 9.4973211533879, 11.736500972197 |
| Center coordinates | 9.4973211533879, 11.736500972197 |
Annual motion of Iris
| Date | Wed, 8 October 2025 |
| Twighlight start | 18:03 |
| Twighlight end | 03:36 |
| Twighlight duration | 10h 33m |
| Rise | 00:54 |
| Set | 14:04 |
| Elevation at transit | 64° |
| Transit time | 07:29 |
| Equatorial coordinates | RA: 09h 31m 33s", Dec: 11° 33' 45s |
| Magnitude | 10 |
| Constellation | Leo |
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.
Astrometric & Physical Parameters of 7 Iris
Coordinates & Visibility
| Right Ascension | 9.4973211533879° |
| Declination | 11.736500972197° |
| Magnitude | 10.42 |
| Constellation | Leo |
| Elevation | 25.6° |
| Azimuth | 94.7° |
Physical properties
| Mean radius in kilometres | 100 |
| Boby mass in kg | 8.4E+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 | 1346.628 |
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.