Observing the Constellations
Short descriptions for finding the Constellations
from Southern Africa

A star watching service by ASSA Bloemfontein Centre, South Africa
Information customized for southern hemisphere, 29 degree latitude South


List of all 88 official constellations

The Constellation of

CANCER

Background:
Cancer
(the Crab) is one of the twelve constellations of the zodiac. Cancer consists mainly of six fairly faint stars and bright city lights can make it difficult to spot. (“Cancer” is derived from the word “Cancridae” which is a family of many of the best known edible crabs).

Lying in cancer is the Beehive open star cluster, M44 (also known as “Praesepe”). This is an excellent binocular object and can be seen as a fuzzy patch with the naked eye. In one mythological story, Hercules was fighting the giant monster Hydra (also a constellation close by). The crab was sent to distract Hercules from his fighting, but was crushed by Hercules in the process of doing so! For its valour, the Crab was placed in the heavens as part of the zodiacal constellations.

Where is it?
In mid-autumn Cancer can be found in the northern region of the sky above the horizon in the evenings. It lies between the bright constellations of Gemini and Leo. It lies outside the Milky Way region but contains a lot of faint stars within its constellation boudary.


Finding it:
Due to its faint stars, Cancer can be difficult to observe from a city. It is recommended that you find the twin stars of Gemini (Castor and Pollux) to the lower west of Cancer and star hop your way upwards. You can also move down (north) from the circle of Hydra just "above" Cancer. Alternatively you can find the open cluster M44 through a binocular / with the naked eye and search for the other stars from there.


Descriptions are based on evening observations, for the southern hemisphere and more specifically for Southern Africa.

Summer = Dec, Jan, Feb
Autumn = Mar, Apr, May
Winter = Jun, Jul, Aug
Spring = Sep, Oct, Nov

Zenith = point directly above you in the sky


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Constellation English name Constellation English name
Andromeda The Princess Lacerta Lizard
Antlia Air Pump Leo Lion
Apus Bird of Paradise Leo Minor Smaller Lion
Aquarius Water Carrier Lepus Hare
Aquila Eagle Libra Balance / scale
Ara Altar Lupus Wolf
Aries Ram Lynx Lynx
Auriga Charioteer Lyra Lyre
Bootes Herdsman Mensa Table Mountain
Caelum Chisel Microscopium Microscope
Camelopardalis Giraffe Monoceros Unicorn
Cancer Crab Musca Fly
Canes Venatici Hunting Dogs Norma Square
Canis Major Big Dog Octans Octant
Canis Minor Little Dog Ophiucus Serpent Carrier
Capricornus Goat Orion Orion
Carina Keel of Argo Pavo Peacock
Cassiopeia The Queen Pegasus Winged Horse
Centaurus The Centaur Perseus Perseus
Cepheus King Cepheus Phoenix Phoenix
Cetus Whale Pictor Easel
Chamaeleon Chameleon Pisces Fishes
Circinus Compass (draw) Pisces Austrinus Southern Fish
Columba Dove Puppis Stern of Argo
Coma Berenices Berenice's Hair Pyxis Compass of Argo
Corona Australis Southern Crown Reticulum Reticle
Corona Borealis Northern Crown Sagitta Arrow
Corvus Crow Sagittarius Archer
Crater Cup Scorpius Scorpion
Crux Southern Cross Sculptor Sculptor
Cygnus Swan Scutum Shield
Delphinus Dolphin Serpens Serpent
Dorado Swordfish Sextans Sextant
Draco Dragon Taurus Bull
Equuleus Little Horse Telescopium Telescope
Eridanus River Triangulum Triangle
Fornax Furnace Triangulum Australe Triangle (South)
Gemini Twins Tucana Toucan
Grus Crane Ursa Major Great Bear
Hercules Hercules Ursa Minor Little Bear
Horologium Clock / watch Vela Sails of Argo
Hydra Hydra (Sea Serpent) Virgo Virgin
Hydrus Water Serpent Volans Flying Fish
Indus Indian Vulpecula Fox




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