522 Helga is a minor planet orbiting the Sun. It is notable for being the first such object to be shown to be in a stable but chaotic orbit in resonance with Jupiter, its Lyapunov time being relatively short, at 6,900 yr. Despite this, its orbit appears to be stable, as the eccentricity and precession rates are such that it avoids close encounters with Jupiter.
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- 521 Brixia
- 522 Helga
- 523 Ada
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