Frozen to death? Detection of comet Hale-Bopp at 30.7 AU

Authors: Gy. M. Szabó, K. Sárneczky and L. L. Kiss.<br />Astronomy & Astrophysics Vol. 531 , page A11<br />Published online: 31/05/2011<br />
Keywords:
comets: individual: Hale-Bopp ; techniques: photometric.

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