Analysis of the asteroid'slight curve based onphotometric data collected during 2011 shows arotation period of15.78±0.02 h with a brightness variation of0.53±0.02 inmagnitude. This is consistent with prior results.[4] This is classified as anM-type asteroid in theTholen system and X-type in theBus and Binzel taxonomy,[5] with a moderate albedo and generally featurelessnear infrared spectra. An absorption feature has been detected at a wavelength 3 μm, suggesting this is W-type.[5] It spans a diameter of31.95±2.8 km.[6]Radar echoes are bimodal, suggesting a bifurcated structure that is likely acontact binary.[5]
^abMacLennan, Eric M.; Emery, J. P. (October 2013), "Constraints on Spin Axis and Thermal Properties of Asteroids in the WISE Catalog",American Astronomical Society, DPS meeting #45,Bibcode:2013DPS....4520819M, 208.19
^Warner, Brian D. (April 2012), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2011 September - December",The Minor Planet Bulletin,39 (2):69–80,Bibcode:2012MPBu...39...69W,ISSN1052-8091
^Hardersen, P. S.; et al. (March 2007), "Near-IR Reflectance Spectra of M-Asteroids 250 Bettina, 369 Aeria, 413 Edburga, and 931 Whittemora",38th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXVIII), held March 12–16, 2007 in League City, Texas. LPI Contribution No. 1338, p. 1956,Bibcode:2007LPI....38.1956H.