M46 Observation Details
M46 Daily Motion
M46 will become visible in October, 5. After being too close to the Sun to observe, it will reappear in the night sky. Starting from October, 5, M46 can be seen again, providing a good opportunity for observation.
M46 Visibility Timetable on April 26
M46 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 8.7% illuminated | 05:18 | -57° |
| M46 rise | 13:49 | |
| Moon Set | 18:02 | 34° |
| M46 transit | 18:56 | 35° |
| Sunset | 20:19 | 32° |
| Civil sunset | 20:49 | 29° |
| Astrosession begin | 22:02 | 20° |
| M46 set | 00:04 | |
| Astrosession end | 04:57 | -54° |
Track M46 Position Throughout the Night
← Sat, 26 April 2025 →
| Time | |
| Altitude | |
| Azimuth |
M46 - Open Cluster
M46 is an open cluster located in the constellation Puppis. It was discovered by Charles Messier in 1771. The cluster contains a mix of young, hot stars and older stars, along with a planetary nebula (NGC 2438) superimposed on it.
M46 spans about 30 light-years across and contains around 500 stars. The cluster is approximately 5,400 light-years away from Earth and has an apparent magnitude of 6.1, making it visible with binoculars or a small telescope.
M46 Image Gallery
DSS Blue
DSS Red
DSS Near-Infrared
DSS Composite image
The photos are taken from the Digitized Sky Survey 2 (DSS2), which was produced at the Space Telescope Science Institute (STScI) under NASA contract, using data from the UK Science and Technology Facilities Council (STFC), the European Southern Observatory (ESO), and the National Geographic Society-Palomar Observatory Sky Survey (POSS II).
Special thanks to the National Optical Astronomy Observatory (NOAO), the Royal Observatory, Edinburgh, and the California Institute of Technology for their significant contributions.
Finder Chart for M46
| Object name | M46 |
| Field of view | |
| Limiting magnitude | |
| M46 coordinates | 7.69634, -14.81 |
| Center coordinates | 7.69634, -14.81 |
M46 Passage Through Night
Current position of M46
| Time | 21:42 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| M46 elevation | 23° |
| M46 Azimuth | 136° |
Annual motion of M46
| Date | Sun, 27 April 2025 |
| Twighlight start | 22:03 |
| Twighlight end | 04:54 |
| Twighlight duration | 7h 51m |
| Rise | 13:45 |
| Set | 00:01 |
| Elevation at transit | 35° |
| Transit time | 18:53 |
| Equatorial coordinates | RA: 07h 41m 46s", Dec: -14° 48' 36s |
| Magnitude | 6 |
| Constellation | Puppis |
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 M46 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.
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.