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 | |
| Moonset | 14:06 | -58° |
| Astronomical observing session begins | 18:29 | -20° |
| Cetus rise | 20:08 | |
Moonrise, 42.4% illuminated  | 22:14 | 24° |
| Cetus transit | 01:49 | 47° |
| Astronomical observing session ends | 03:43 | 39° |
| Civil sunrise | 04:15 | 35° |
| Sunrise | 04:43 | 31° |
| Cetus set | 07:30 |
Track Cetus Position Throughout the Night
← 5 September 2026 →
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| Altitude | |
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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 | Sun, 6 September 2026 |
| Twilight start | 19:00 |
| Twilight end | 03:10 |
| Twilight duration | 8h 10m |
| Rise | 20:05 |
| Set | 07:27 |
| Elevation at transit | 47° |
| Transit time | 01:46 |
| Equatorial coordinates | RA: 01h 40m 22s", Dec: -5° 53' 16s |
| Magnitude | - |
| Constellation |
The graph illustrates the constellation’s annual visibility pattern and its daily rise, set, and transit times throughout the year.
The vertical axis shows the hours of the day, while the horizontal axis spans the days of the year.
The reddish area marks when the constellation is above the horizon. The white line shows when it reaches its highest point in the sky. View detailed visibility information in a table with rise, transit, and set times for each date.
The vertical axis shows the hours of the day, while the horizontal axis spans the days of the year.
The reddish area marks when the constellation is above the horizon. The white line shows when it reaches its highest point in the sky. View detailed visibility information in a table with 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 used in celestial mapping.
Special thanks to Sky & Telescope Magazine and contributors Roger Sinnott and Rick Fienberg for producing the charts and tables. Alan MacRobert’s constellation patterns were influenced by the work of H. A. Rey and adjusted to align with earlier traditions.