| CANCER Chart | Midnight Culmination | Skylore | Description | Asterisms |
| Star Clusters | Galaxies | Discussed in these Shows |

Constellation Data

  • Name: CANCER
  • Translation: Crab
  • Abbreviation: Cnc
  • Genitive: Cancri
  • Size: 31
  • Regions: Zodiac
  • RA: 9 hours
  • Decl: +20 degrees
  • Season: Winter
  • Midnight Culmination: 30 January
  • Pages where CANCER is discussed in Chet Raymo's 365 Starry Nights: 39-47,50

What is the Genitive form?
What is Right Ascension (RA)?
Is this constellation ever visible from my latitude? What is Declination?

Where should I look for a constellation on a date before or after its midnight culmination? What is Midnight Culmination?


Sent by Juno to kill Hercules, who squashed it with his foot.


A faint constellation between Gemini and Leo.htm">Leo.

[star chart]

Star chart created with Voyager II Software for Macintosh, published by Carina Software. This is just a taste of what Voyager can do! For info on Voyager II software, call Carina Software at (510) 355-1266, write them at 12919 Alcosta Blvd Suite #7, San Ramon, CA 94583, or visit Carina Software's home page and check out Voyager II for yourself.


Asses and the Manger

What is an Asterism?

Star Clusters

M44, Praesepe or Beehive (Galactic cluster), mag. 3.9.

M67 (Galactic cluster), mag. 6.1.

What are Star Clusters?


Look with binoculars for the Beehive star cluster, faintly visible to the naked eye.

What are Galaxies?
Table of Messier Objects.
What is apparent Magnitude?

Discussed in these Shows

[Small Logo] ©1997 Welcome to the Basic Celestial Phenomena web site. To provide explanations of basic observational astronomy to students, teachers, families, and visitors to planetariums these pages have been written by an ex-OBU Planetarium Director, Kerry Magruder; the OBU Natural Sciences Coordinator, Mike Keas; and some of the students who work in the OBU planetarium.

The source for the logo is not a medieval woodcut!

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