Delta2 Telescopii is in the Telescopium constellation (a minor constellation in the southern celestial hemisphere) and has a period of 21.7055 d.
Telescopium 21.7056 d Period (P) Telescopium is a minor constellation in the southern celestial hemisphere, one of twelve named in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments. 
