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TYC 2078-1706-1


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The diameter of Pallas from its occultation of SAO 85009
The May 29, 1978, occultation of SAO 85009 by Pallas was observedphotoelectrically at seven widely spaced sites. The observations arewell represented by an elliptical apparent limb profile having semimajorand semiminor axes of 279.5 + or - 2.9 and 262.7 + or - 4.5 km,respectively. Combining these results with published information on thelight curve and rotational pole position, Pallas's mean diameter isfound to be 538 + or - 12 km, which yields a mean density for Pallas of2.8 + or - 0.5 g/cu cm and a visual geometric albedo of 0.103 + or -0.005. The diameter of Pallas as determined from this occultation issignificantly smaller than the values derived by radiometric,polarimetric, and double-image techniques.

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观测天体数据

星座:武仙座
右阿森松:17h19m40.03s
赤纬:+25°25'55.6"
视星:10.751
右阿森松适当运动:-0.3
赤纬适当运动:12.4
B-T magnitude:10.882
V-T magnitude:10.762

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 2078-1706-1
USNO-A2.0USNO-A2 1125-08167334
HIPHIP 84772

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