Sadr

37Gam Cyg

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Radiating with an absolute magnitude of −6.52, the greatest intrinsic luminosity of any star treated here, Sadr appears at only apparent magnitude 2.23 because it lies extraordinarily far off — roughly 1,832 light-years, the most remote star in this group. It is a yellow-white F-type star and marks the Gamma position of Cygnus, at the very heart of the Swan where the constellation's cross-shaped figure intersects. Its colour index of 0.673 reflects the intermediate temperature of the F class. Embedded in one of the richest regions of the northern Milky Way, Sadr is a luminous supergiant whose faint appearance testifies chiefly to the immense distance across which its light reaches the Solar System.

भौतिक गुण

वर्णक्रम वर्ग F Class F — F-type (Yellow-White)
रंग सूचकांक (B−V) 0.673

प्रेक्षण

आभासी परिमाण +2.23
निरपेक्ष परिमाण -6.52
दूरी 1,832 ly
नक्षत्रमंडल Cygnus

स्थिति

दक्षिणांश 20h 22.23m
दिगंश 40° 15.40′

Frequently Asked Questions

What type of star is Sadr?
Sadr is a Class F — F-type (Yellow-White) star.
How far is Sadr from Earth?
Sadr is approximately 1,832.3 light-years from Earth.
Can you see Sadr with the naked eye?
With an apparent magnitude of 2.23, Sadr is visible to the naked eye.
What constellation is Sadr in?
Sadr is located in the constellation Cygnus.