Arcturus Observation Details
Arcturus Daily Motion
Arcturus will not be observable tonight. It will reach its transit at 69° by 17:37 and set at 00:44. Throughout the night, from 01:05 to 05:50, it will be below the horizon. Arcturus will rise again after sunrise, at 10:27.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 August 24
Arcturus Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 0.1% illuminated | 07:06 | -28° |
| Arcturus transit | 17:37 | 69° |
| Sunset | 20:15 | 50° |
| Moon Set | 20:38 | 46° |
| Civil sunset | 20:45 | 45° |
| Astrosession begin | 21:54 | 32° |
| Arcturus set | 00:44 | |
| Astrosession end | 05:14 | -31° |
| Arcturus rise | 10:27 |
Track Arcturus Position Throughout the Night
← Sun, 24 August 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Arcturus changing position in the night sky.
Where is Arcturus right now?
Arcturus is located in the constellation Bootes, at right ascension 14h 15m 39s" and declination 19° 10' 56s. At the current time, it is below the horizon and not visible from your location.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 | 01:05 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| Arcturus elevation | -4° |
| Arcturus Azimuth | 61° |
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 | Mon, 25 August 2025 |
| Twighlight start | 21:52 |
| Twighlight end | 05:13 |
| Twighlight duration | 7h 21m |
| Rise | 10:27 |
| Set | 00:40 |
| Elevation at transit | 69° |
| Transit time | 17:34 |
| 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.
Astrometric & Physical Parameters of Arcturus
Coordinates & Visibility
| Right Ascension | 14.261029999999998° |
| Declination | 19.18241° |
| Magnitude | -0.05 |
| Constellation | Bootes |
| Elevation | -3.5° |
| Azimuth | 61.2° |