Cetus Constellation
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Cetus, the sea monster or whale, is a constellation in the celestial equator associated with the Greek myth of Andromeda and Perseus.
Cetus Rise and Set Timetable
| Time | Elevation | |
| Astrosession begin | 19:40 | -50° |
Moon Rise, 68.9% illuminated  | 21:50 | -27° |
| Cetus Rise | 00:08 | |
| Astrosession end | 02:44 | 29° |
| Civil sunrise | 03:22 | 35° |
| Sunrise | 03:54 | 39° |
| Cetus Transit | 05:49 | 47° |
| Moon Set | 10:23 | 13° |
Track Cetus Position Throughout the Night
← Mon, 6 July 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Cetus changing position in the night sky.
Nebulae in the constellation Cetus
IC0186 NED03
Galaxy
IC0186 NED03 is a galaxy with apparent magnitude in the constellation Cetus, spanning approximately 0.3 arcseconds in the sky.
NGC0815 NED01
Galaxy
NGC0815 NED01 is a galaxy with apparent magnitude in the constellation Cetus, spanning approximately 0.2 arcseconds in the sky.
NGC0997 NED01
Galaxy
NGC0997 NED01 is a galaxy with apparent magnitude in the constellation Cetus, spanning approximately 0.3 arcseconds in the sky.
M77
Galaxy
A barred spiral galaxy containing billions of stars, located approximately 47 million light-years away in the constellation Cetus.
Annual motion of Cetus
| Date | Tue, 7 July 2026 |
| Twighlight start | 20:22 |
| Twighlight end | 02:00 |
| Twighlight duration | 6h 38m |
| Rise | 00:08 |
| Set | 11:30 |
| Elevation at transit | 47° |
| Transit time | 05:49 |
| Equatorial coordinates | RA: 01h 40m 22s", Dec: -5° 53' 16s |
| Magnitude | - |
| Constellation |
The graph illustrates the annual visibility pattern of a Cetus, 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 Cetus 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. You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
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 Cetus 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. You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
Acknowledgements
We gratefully acknowledge the International Astronomical Union (IAU) for defining and standardizing the official constellation boundaries, which provide a consistent framework for celestial mapping.
Special thanks to Sky & Telescope Magazine and contributors Roger Sinnott and Rick Fienberg for their collaboration in producing the charts and tables. The constellation patterns, drawn by Alan MacRobert, were influenced by the work of H. A. Rey and thoughtfully adjusted to align with earlier traditions.