38P/＜Stephan-Oterma 彗星＞(2011)

＊　ステファン・オテルマ彗星が10等星台に！　＊ Discovery J. E. Coggia (Marseilles, France) found what he thought was an uncataloged nebula on 1867 January 22.9. The sky clouded up almost immediately and remained completely cloudy until the night of January 24, when E. J. M. Stephan (Marseille, France) checked on the nebula through a brief break in the clouds and saw that it had moved. Stephan was able to confirm this was a comet on January 25.86. Stephan said the comet was rather brillant, round, with a very marked nucleus. The initial announcements did not mention Coggia's name and the comet was named after Stephan. E. W. L. Tempel (Marseille, France) independently discovered this comet on January 28.86 near Pi Arietis. Although he knew of Stephan's discovery, he noted a distinct difference in the description from his and figured he had found a different comet. Tempel described the comet as very faint and about 3 arc minutes across. Liisi Oterma (Turku, Finland) discovered this comet on 1942 November 6.00. It was described as magnitude 13. Oterma confirmed the discovery on November 6.84. It was described as magnitude 13, with a slow northward motion. A short time after the announcement, Fred L. Whipple (Harvard College Observatory, Massachusetts, USA) found a pre-discovery image on a patrol plate exposed on November 5.23. The magnitude was also estimated as 13.

from　G A R Y W. K R O N K ' S C O M E T O G R A P H Y
http://cometography.com/pcomets/038p.html