NGC 1555

Alt. Designations: NGC 1555
Object Type: reflection nebula
Constellation: Taurus
Right Ascension: 04h 21m 56.7s
Declination: +19° 32´ 04"
Visual Magnitude:
Apparent Dimension: 0.5´ Dia.
Best Month To View: Dec

NGC 1555, sometimes known as Hind's Variable Nebula, is a variable nebula, illuminated by the star T Tauri, located in the constellation Taurus. It is a Herbig–Haro object. Herbig–Haro objects (HH) are small patches of nebulosity associated with newly born stars, and are formed when narrow jets of gas ejected by young stars collide with clouds of gas and dust nearby at speeds of several hundred kilometres per second. Herbig–Haro objects are ubiquitous in star-forming regions, and several are often seen around a single star, aligned along its rotational axis.