Arcturus Observation Details
Arcturus Daily Motion
Arcturus will rise before twilight begins, at 16:17, and will reach 63° elevation by the time twilight commences at 22:02. It will reach its transit at 69° by 23:23 and gradually fade away as the night ends at 04:55, maintaining an elevation of around 17°.Arcturus will be visible until September, 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.
Arcturus Visibility Timetable on May 28
Arcturus Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 0.3% illuminated | 06:03 | 6° |
| Arcturus rise | 16:17 | |
| Sunset | 20:49 | 51° |
| Civil sunset | 21:23 | 57° |
| Moon Set | 22:12 | 64° |
| Astrosession begin | 22:48 | 68° |
| Arcturus transit | 23:23 | 69° |
| Astrosession end | 04:10 | 26° |
| Civil sunrise | 05:35 | 10° |
| Sunrise | 06:08 | 4° |
| Arcturus set | 06:30 |
Track Arcturus Position Throughout the Night
← Wed, 28 May 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Arcturus changing position in the night sky.
Arcturus - Red Giant Star
Arcturus is the brightest star in the constellation Boötes and the fourth-brightest star in the night sky. It is a red giant star approximately 36.7 light-years away from Earth.
With an apparent magnitude of -0.05, Arcturus is one of the most luminous stars in the Sun's neighborhood and is often used in celestial navigation. It is larger and cooler than the Sun, giving it a distinct orange hue.
Finder Chart for Arcturus
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| Object name | Arcturus |
| Field of view | |
| Limiting magnitude | |
| Arcturus coordinates | 14.261029999999998, 19.18241 |
| Center coordinates | 14.261029999999998, 19.18241 |
Arcturus Passage Through Night
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Current position of Arcturus
| Time | 15:48 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| Arcturus elevation | -5° |
| Arcturus Azimuth | -60° |
Here you can see the current position of the Arcturus on the map, as well as its positions for rise and set. This tool allows you to track the Arcturus's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of Arcturus
| Date | Wed, 28 May 2025 |
| Twighlight start | 22:43 |
| Twighlight end | 04:05 |
| Twighlight duration | 5h 21m |
| Rise | 16:13 |
| Set | 06:26 |
| Elevation at transit | 69° |
| Transit time | 23:20 |
| Equatorial coordinates | RA: 14h 15m 39s", Dec: 19° 10' 56s |
| Magnitude | -0 |
| Constellation | Bootes |
The graph illustrates the annual visibility pattern of a Arcturus, 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 Arcturus 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 Arcturus 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.