description HB 3 (G132.7+1.3) Overview
HB 3, also designated G132.7+1.3, is an evolved, faint shell-type supernova remnant in the direction of the constellation Cassiopeia. Radio surveys place it next to the W3, W4, and W5 star-forming complex, and studies have examined evidence that the remnant is interacting with molecular material associated with the W3 H II region. It is of interest to astronomers studying how an old supernova remnant affects nearby interstellar clouds.
help HB 3 (G132.7+1.3) FAQ
How good is HB 3 (G132.7+1.3)?
HB 3 (G132.7+1.3) scores 4.60/10 (Poor) on Lunoo, making it rated in the Nebula category.
What are the best alternatives to HB 3 (G132.7+1.3)?
See our alternatives page for HB 3 (G132.7+1.3) for a ranked list with scores. Top alternatives include: Abell 85 (CTB 1), CTB 1 (Abell 85), Simeis 147 (Spaghetti Nebula).
How does HB 3 (G132.7+1.3) compare to Abell 85 (CTB 1)?
See our detailed comparison of HB 3 (G132.7+1.3) vs Abell 85 (CTB 1) with scores, features, and an AI-powered verdict.
Is HB 3 (G132.7+1.3) worth it in 2026?
With a score of 4.60/10, HB 3 (G132.7+1.3) is a solid option in Nebula. See all Nebula ranked.
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