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Comet 242P/SPAHR - (=1984 U4 = P/2010 P3)

Photometric data obtained by use of FOCAS-II software

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD

OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

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IAUC 7042: COMET 1998 U4 (SPAHR)

     Comet 242P / Spahr is a periodic comet belonging to the Jupiter comet family . The comet was discovered by the American astronomer Timothy B. Spahr (University of Arizona) on 27 October 1998 , with the Catalina Sky Survey and a 0.41-m f/3 Schmidt telescope + CCD.  This object was assigned as comet 1998 U4 (SPAHR) via IAUC 7042, issued on 1998 oct. 29. Periodicity of this comet is 9.46 years

Recovery (IAUC 9161):

Gary Hug recovered comet 1998 U4 (P/Spahr) on August 14.41 on images taken with a 0.56-m reflector located near Scranton, KS, U.S.A. The indicated correction to the prediction by B. G. Marsden on MPC 65938 is Delta(T) = +0.04 day. The perihelion distance has migrated out a little to 4.0 AU and the period is now 13.0 years.