Rasalhague Position and Visibility Tonight
Where is Rasalhague right now?
Rasalhague is located in the constellation Ophiuchus. It is currently above the horizon at an altitude of 26° toward the west, with an apparent magnitude of 2.08.
Twilight begins at 23:23 local time. At that moment, Rasalhague will be 26° above the horizon toward the west.
Twilight begins at 23:23 local time. At that moment, Rasalhague will be 26° above the horizon toward the west.
Rasalhague visibility on 2026-08-18
Rasalhague Visible from sunset until early morning
Rasalhague rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -26° |
| Rasalhague rise | 12:18 | |
| Sunset | 17:55 | 62° |
| Civil sunset | 18:24 | 64° |
| Rasalhague transit | 18:56 | 65° |
| Twilight start | 18:57 | 65° |
| Astronomical observing session begins | 19:32 | 64° |
| Moonset | 20:26 | 58° |
| Rasalhague set | 01:34 | |
| Astronomical observing session ends | 02:51 | -14° |
Track Rasalhague Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Rasalhague changing position in the night sky.
Finder Chart for Rasalhague
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| Object name | Rasalhague |
| Field of view | |
| Limiting magnitude | |
| Rasalhague coordinates | 17.582241, 12.560035000000001 |
| Center coordinates | 17.582241, 12.560035000000001 |
Rasalhague Passage Through Night
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Current position of Rasalhague
| Time | 23:23 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 26° |
| Azimuth | 266° |
Here you can see the current position of Rasalhague on the map, as well as its positions for rise and set. This tool lets you track its movement throughout the night with accurate, up-to-date information.
Annual motion of Rasalhague
Rasalhague will remain visible until November 20, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Wed, 19 August 2026 |
| Twilight start | 19:26 |
| Twilight end | 02:46 |
| Twilight duration | 7h 19m |
| Rise | 12:14 |
| Set | 01:30 |
| Elevation at transit | 65° |
| Transit time | 18:52 |
| Equatorial coordinates | RA: 17h 34m 56s", Dec: 12° 33' 36s |
| Magnitude | 2 |
| Constellation | Ophiuchus |
The graph illustrates the annual visibility pattern of Rasalhague, including its daily appearances and transit times. The vertical axis shows the hours of the day and the horizontal axis spans the year. The reddish area marks when the object is above the horizon, while the white line marks its daily transit.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of Rasalhague
Coordinates and Visibility
| Right Ascension | 17.582241° |
| Declination | 12.560035000000001° |
| Magnitude | 2.08 |
| Constellation | Ophiuchus |
| Elevation | 25.8° |
| Azimuth | 266.2° |