Regulus Observation Details
Regulus Daily Motion
Regulus will reach its transit before twilight, at 19:13. By the onset of twilight at 22:03, it will be at elevation, and it will set before sunrise, at 01:53.Regulus will be visible until June, 14, 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.
Regulus Visibility Timetable on May 29
Regulus Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 2.8% illuminated | 07:01 | -38° |
| Regulus transit | 19:13 | 62° |
| Sunset | 20:50 | 55° |
| Civil sunset | 21:23 | 50° |
| Astrosession begin | 22:49 | 35° |
| Moon Set | 23:18 | 30° |
| Regulus set | 01:53 | |
| Astrosession end | 04:09 | -23° |
| Regulus rise | 12:29 |
Track Regulus Position Throughout the Night
← Thu, 29 May 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Regulus changing position in the night sky.
Regulus - Multiple Star System
Regulus is the brightest star in the constellation Leo and the twenty-first-brightest star in the night sky. It is a multiple star system located about 79 light-years away from Earth.
Regulus has an apparent magnitude of 1.35 and consists of a main sequence star and three companion stars. It is one of the key stars used in celestial navigation.
Finder Chart for Regulus
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| Object name | Regulus |
| Field of view | |
| Limiting magnitude | |
| Regulus coordinates | 10.139532, 11.967207 |
| Center coordinates | 10.139532, 11.967207 |
Regulus Passage Through Night
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Current position of Regulus
| Time | 16:52 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| Regulus elevation | 48° |
| Regulus Azimuth | -122° |
Here you can see the current position of the Regulus on the map, as well as its positions for rise and set. This tool allows you to track the Regulus's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of Regulus
| Date | Thu, 29 May 2025 |
| Twighlight start | 22:44 |
| Twighlight end | 04:04 |
| Twighlight duration | 5h 19m |
| Rise | 12:29 |
| Set | 01:49 |
| Elevation at transit | 62° |
| Transit time | 19:09 |
| Equatorial coordinates | RA: 10h 08m 22s", Dec: 11° 58' 01s |
| Magnitude | 1 |
| Constellation | Leo |
The graph illustrates the annual visibility pattern of a Regulus, 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 Regulus 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 Regulus 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.