description Abell 63 Overview
Abell 63 is a planetary nebula in the constellation Sagitta. Its central system includes the eclipsing binary star UU Sagittae, whose connection with the nebula was identified in the twentieth century. An eclipsing binary changes in observed brightness when one star passes in front of the other from Earth's viewpoint. Abell 63 is therefore studied both as an expanding ionized nebular shell and as a binary-star system at its center.
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How good is Abell 63?
Abell 63 scores 5.72/10 (Mediocre) on Lunoo, making it rated in the Nebula category. Scientifically interesting binary planetary nebula; niche reputation, faint imaging target, limited broad public or amateur consensus recognition.
What are the best alternatives to Abell 63?
See our alternatives page for Abell 63 for a ranked list with scores. Top alternatives include: Necklace Nebula, Necklace Nebula (IPHASXJ194359.5+170901), Abell 82.
How does Abell 63 compare to Necklace Nebula?
See our detailed comparison of Abell 63 vs Necklace Nebula with scores, features, and an AI-powered verdict.
Is Abell 63 worth it in 2026?
With a score of 5.72/10, Abell 63 is a solid option in Nebula. See all Nebula ranked.
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