It is not known as a constellation
The nickname of the constellation Delphinus is The Dolphin
A small group of stars that appear to be close together are often known a cluster. Technically its an asterism.
Leo is the 12th largest constellation in the night sky.
dorado
from France
A small group of stars is a cluster or a constellation of stars.
No, there are no confirmed planets in the constellation Pavo. The constellation is relatively small and does not contain any known exoplanets within its boundaries.
Polaris is in the constellation Small Bear (Ursa Minor). I didn't check whether it actually is the brightest star in that constellation.
Dorado
Norma.
This is NORMA
Aries