description Sadr Overview
Sadr is the proper name of Gamma Cygni, a bright F8 Iab supergiant in the constellation Cygnus. It lies at the center of the Northern Cross, an asterism formed by several prominent stars, and appears against dense Milky Way star fields near the Gamma Cygni nebula. Distance estimates place Sadr at roughly 1,800 light-years from Earth, while the surrounding nebular structures may not be at exactly the same distance.
help Sadr FAQ
What is Sadr's astronomical designation?
Sadr is Gamma Cygni, a prominent yellow-white supergiant in the constellation Cygnus. It marks the central intersection of the Northern Cross asterism.
How far away is Sadr?
Sadr lies about 1,800 light-years from Earth. Its great distance is consistent with its appearance as a bright supergiant rather than a nearby ordinary star.
Where can Sadr be found in the night sky?
Sadr is located in Cygnus, at the crossing point of the Northern Cross. It is near the rich Milky Way star fields of northern summer skies.
What surrounds Sadr?
Sadr lies in a bright region of ionized gas and dust commonly associated with the Gamma Cygni or IC 1318 nebular complex. The surrounding emission makes this part of Cygnus an important target for wide-field astronomy.
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