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Comet 112P/URATA-NIIJIMA - (=1986 UD , =1993 q)

Comet 110P/HARTLEY - Kronk’s cometgraphy

Discovery:  IAUC 4267: 1986n; 1986 UD; 1982i

 IAU Circular 4267 (1986 November 3) announced that T. Niijima and T. Urata had discovered a fast-moving minor planet on plates exposed on 1986 October 30.58 with a 0.30-m f/5.8 reflector at Ojima. The magnitude was estimated as 16.

     On November 5, it was announced that T. Seki (Geisei, Japan) had observed the comet on November 3 and noted a "very faint and diffuse coma surrounding a central condensation."

     M. Lovas independently discovered the object at Piszkesteto on November 4 and described it as asteroidal with a "faint asymmetric coma." A prediscovery photograph from October 29 was also found at Brorfelde.

Recovery:  IAUC 5882: 1993q; N Aql 1993; 1993ac

PERIODIC COMET URATA-NIIJIMA (1993q)      This comet has been recovered by J. V. Scotti with the Spacewatch telescope at Kitt Peak, as shown below.  A 11" coma was visible on Oct. 20.49 (15" on Oct. 21.50); a 0'.4 tail was visible on both nights in p.a. 290-292 deg; m2 = 22.7 on both nights.  The indicated correction to the prediction on MPC 16380 (ephemeris on MPC

22064) is Delta(T) = +0.24 day.