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Comet Halley

Comet Halley

Number 1
Perihielion Date 1986-02-09
Perihielion Distance 0.587
Absolute Magnitude 5.5
Semi-major axis ( AU ) 17.94
Orbit Period ( days ) 76.1
Orbital Inclination ( degs ) 162.2
Orbital Eccentricity 0.967
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Data Source N.A.S.A.