M73 Observation Details
M73 Daily Motion
M73 will rise at 15:05, reaching 31° when twilight begins at 18:11. It will reach transit at 40° by 20:25 and will set before twilight ends at 01:44.M73 will be visible until December, 15, 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.
M73 Visibility Timetable on September 16
M73 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 40% illuminated | 23:17 | 26° |
| Moon Set | 14:47 | -3° |
| M73 rise | 15:05 | |
| Sunset | 17:13 | 23° |
| Civil sunset | 17:40 | 27° |
| Astrosession begin | 18:42 | 35° |
| M73 transit | 20:25 | 40° |
| M73 set | 01:44 | |
| Astrosession end | 03:22 | -19° |
Track M73 Position Throughout the Night
← Tue, 16 September 2025 →
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| Altitude | |
| Azimuth |
Shift the map to change the time and observe M73 changing position in the night sky.
Where is M73 right now?
M73 is located in the constellation Aquarius, at right ascension 20h 58m 55s" and declination -12° 38' 07s. At the current time, it is below the horizon and not visible from your location.M73 - Asterism
M73 is an asterism located in the constellation Aquarius. It was discovered by Charles Messier in 1780. The asterism consists of four stars that form a small Y-shaped pattern.
M73 spans about 1.5 light-years across and contains no physical connection between its stars. The asterism is approximately 2,500 light-years away from Earth and has an apparent magnitude of 9.0, making it visible with a small telescope.
Finder Chart for M73
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| Object name | M73 |
| Field of view | |
| Limiting magnitude | |
| M73 coordinates | 20.98221, -12.6355 |
| Center coordinates | 20.98221, -12.6355 |
M73 Passage Through Night
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Current position of M73
| Time | 10:56 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| M73 elevation | -48° |
| M73 Azimuth | -63° |
Here you can see the current position of the M73 on the map, as well as its positions for rise and set. This tool allows you to track the M73's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of M73
| Date | Tue, 16 September 2025 |
| Twighlight start | 18:38 |
| Twighlight end | 03:16 |
| Twighlight duration | 9h 38m |
| Rise | 15:01 |
| Set | 01:40 |
| Elevation at transit | 40° |
| Transit time | 20:21 |
| Equatorial coordinates | RA: 20h 58m 55s", Dec: -12° 38' 07s |
| Magnitude | 9 |
| Constellation | Aquarius |
The graph illustrates the annual visibility pattern of a M73, 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 M73 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 M73 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 M73
Coordinates & Visibility
| Right Ascension | 20.98221° |
| Declination | -12.6355° |
| Magnitude | 8.90 |
| Constellation | Aquarius |
| Elevation | -48.5° |
| Azimuth | -63.5° |
Data Credits
The nebulae information on this page is sourced from the OpenNGC project, developed by Matteo Verga. OpenNGC provides detailed data on the NGC catalog, which is a valuable resource for exploring deep-sky objects such as nebulae.
For more details or to contribute to OpenNGC, visit the official GitHub repository: OpenNGC on GitHub.