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205 Martha is a large main belt asteroid. It is a dark, primitive carbonaceous C-type asteroid. This object was discovered by Johann Palisa on October 13, 1879 in Pola and was named after Martha, a woman in the New Testament.

Efforts to determine the rotation period for this asteroid have produced wildly different results, in large part because the actual period is close to half of an Earth day. A study performed during 2013 showed that the light curve changed significantly during the observation period, adding to the difficulty. This study gave a synodic rotation period of 14.905 ± 0.001 h.<ref name="mpb41_1_47"/>


(205) Martha sections
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