Desdemona belongs to Portia Group of satellites, which also includes Bianca, Cressida, Juliet, Portia, Rosalind, Cupid, Belinda, and Perdita.[8] These satellites have similar orbits and photometric properties.[8] Other than its orbit,[5] size of 90 × 54 km,[6] and geometric albedo of 0.08,[8] virtually nothing is known about Desdemona.
In Voyager 2 imagery, Desdemona appears as an elongated object, with its major axis pointing towards Uranus. The ratio of axes of Desdemona's prolate spheroid is 0.6 ± 0.3.[6] Its surface is grey in color.[6]
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Williams, Dr. David R. (23 November 2007). "Uranian Satellite Fact Sheet". NASA (National Space Science Data Center). Retrieved 12 December 2008.
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Smith, B. A. (January 16, 1986). "Satellites of Uranus". IAU Circular. 4164. Archived from the original on 5 November 2011. Retrieved 29 October 2011.