How many constellations are identified? How are they named? Give examples.

Until now about 88 constellations have been identified i.e., each of these eighty-eight bunches have been identified to have definite boundaries. Each constellation has been assigned a name according to its resemblance either to a human being, an animal or some other known object. For example, the cluster of seven stars (Saptarishi) arranged so as to resemble a plough is called Ursa Major and is a part of the Great Bear. The arrangement is as shown in Fig. Seven bright stars form the body and tail of a big bear. The head and paws are formed from other faint stars not shown in the figure.(a)
Saptarishi (Great bear, plough)
OrionAnother constellation is also very striking and is called orion (vyadha) the pattern is as shown in Fig.
(b) Orion means hunter. Seven bright stars are arranged to form the body of hunting man. The head and limbs of the hunter are formed from other faint stars not shown in figure.