Regulus Observation Details
Regulus Daily Motion
Tonight, observing Regulus may prove challenging owing to its low elevation. It will reach its transit at by 10:11 and set before sunset at 16:47. Rising near twilight's end at 03:31, it will fade away by 03:45, peaking at just 3° above the horizon.Regulus will become visible in October, 6. After being too close to the Sun to observe, it will reappear in the night sky. Starting from October, 6, Regulus can be seen again, providing a good opportunity for observation.
Regulus Visibility Timetable on September 07
Regulus Rise and Set Timetable
| Time | Elevation | |
| Regulus transit | 10:11 | 65° |
| Regulus set | 16:47 | |
| Moon Rise, 99.4% illuminated | 17:06 | -4° |
| Astrosession begin | 18:58 | -23° |
| Astrosession end | 03:13 | -3° |
| Regulus rise | 03:31 | |
| Civil sunrise | 04:17 | 9° |
| Moon Set | 04:34 | 12° |
| Sunrise | 04:44 | 14° |
Track Regulus Position Throughout the Night
← Sun, 7 September 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Regulus changing position in the night sky.
Where is Regulus right now?
Regulus is located in the constellation Leo, at right ascension 10h 08m 22s" and declination 11° 58' 01s. Although it is currently above the horizon at an altitude of 26 degrees, Regulus is not visible because it is daytime.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 | 14:37 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Regulus elevation | 26° |
| Regulus Azimuth | 94° |
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 | Sun, 7 September 2025 |
| Twighlight start | 18:53 |
| Twighlight end | 03:07 |
| Twighlight duration | 8h 13m |
| Rise | 03:31 |
| Set | 16:43 |
| Elevation at transit | 65° |
| Transit time | 10:07 |
| 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.
Astrometric & Physical Parameters of Regulus
Coordinates & Visibility
| Right Ascension | 10.139532° |
| Declination | 11.967207° |
| Magnitude | 1.36 |
| Constellation | Leo |
| Elevation | 25.7° |
| Azimuth | 94.5° |