(6491) 1991 OA
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(6491) 1991 OA is an Amor-type near-Earth minor planet. It was discovered by Henry E. Holt at the Palomar Observatory in San Diego County, California, on July 16, 1991. It is listed as a potentially hazardous object.
- "JPL Close-Approach Data: 6491 (1991 OA)". 2011-09-29 last obs. Retrieved 2012-03-24.
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