12628 Ackworthorr (provisional designation: 2120 T-1) is a main-belt minor planet. It was discovered by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld, and Tom Gehrels at the Palomar Observatory in San Diego County, California, on March 25, 1971. It is named after Mary Ackworth Orr, wife of John Evershed.
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