| タイトル | Speckle interferometry of asteroids. III - 511 Davida and its photometry |
| 著者（英） | Hege, E. K.; Drummond, J. D. |
| 著者所属（英） | Arizona Univ. |
| 発行日 | 1986-08-01 |
| 言語 | eng |
| 内容記述 | Photometric interferometry data on the fifth largest minor planet, 511 Davida, are used to generate orbital elements and physical dimensions. The Seward 2.3 m telescope was employed to obtain the speckle interferometric data. The asteroid was assumed to be a uniform-surfaced triaxial ellipsoid rotating about its shortest axis. A simultaneous amplitude-magnitude aspect method is defined for determining the pole position of the object, which is calculated to be within 4 deg of (307 deg; +32). A weighted amplitude aspect relation provides similar data. The albedos are estimated to lie within the range 0.24-0.42, and an a/b axial ratio of 0.97-1.66 is projected. The variations in the photometric albedos are taken as evidence of a nonuniform surface, a conclusion similar to that reached after earlier photometric measurements of the asteroid Herculina. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 87A14644 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/381434 |
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