Alhena Observation Details
Alhena Daily Motion
Alhena will be visible until May, 7, 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.
Alhena Visibility Timetable on September 09
Alhena Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 97.5% illuminated | 17:59 | -36° |
| Astrosession begin | 18:54 | -36° |
| Alhena rise | 23:39 | |
| Astrosession end | 03:15 | 42° |
| Civil sunrise | 04:18 | 54° |
| Sunrise | 04:46 | 59° |
| Alhena transit | 06:29 | 69° |
| Moon Set | 06:57 | 68° |
Track Alhena Position Throughout the Night
← Tue, 9 September 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Alhena changing position in the night sky.
Where is Alhena right now?
Alhena is located in the constellation Gemini, at right ascension 06h 37m 42s" and declination 16° 23' 57s. At the current time, it is below the horizon and not visible from your location.Alhena - Blue Giant Star
Alhena is the third-brightest star in the constellation Gemini and the thirty-fourth-brightest star in the night sky. It is a blue giant star located about 105 light-years away from Earth.
Alhena has an apparent magnitude of 1.93 and is one of the most prominent stars in the winter sky in the Northern Hemisphere.
Finder Chart for Alhena
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| Object name | Alhena |
| Field of view | |
| Limiting magnitude | |
| Alhena coordinates | 6.628528, 16.399252 |
| Center coordinates | 6.628528, 16.399252 |
Alhena Passage Through Night
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Current position of Alhena
| Time | 17:13 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Alhena elevation | -33° |
| Alhena Azimuth | 23° |
Here you can see the current position of the Alhena on the map, as well as its positions for rise and set. This tool allows you to track the Alhena's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of Alhena
| Date | Wed, 10 September 2025 |
| Twighlight start | 18:52 |
| Twighlight end | 03:14 |
| Twighlight duration | 8h 22m |
| Rise | 23:39 |
| Set | 13:20 |
| Elevation at transit | 69° |
| Transit time | 06:29 |
| Equatorial coordinates | RA: 06h 37m 42s", Dec: 16° 23' 57s |
| Magnitude | 2 |
| Constellation | Gemini |
The graph illustrates the annual visibility pattern of a Alhena, 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 Alhena 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 Alhena 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 Alhena
Coordinates & Visibility
| Right Ascension | 6.628528° |
| Declination | 16.399252° |
| Magnitude | 1.93 |
| Constellation | Gemini |
| Elevation | -33.2° |
| Azimuth | 22.5° |