RESULTS OF TV IMAGING OF PHOBOS (EXPERIMENT VSK-FREGAT)

被引：33

作者：

AVANESOV, G

ZHUKOV, B

ZIMAN, Y

KOSTENKO, V

KUZMIN, A

MURAVEV, V

FEDOTOV, V

BONEV, B

MISHEV, D

PETKOV, D

KRUMOV, A

SIMEONOV, S

BOYCHEVA, V

UZUNOV, Y

WEIDE, GG

HALMANN, D

POSSEL, W

HEAD, J

MURCHIE, S

SCHKURATOV, YG

BERGHANEL, R

DANZ, M

MANGOLDT, T

PIHAN, U

WEIDLICH, U

LUMME, K

MUINONEN, K

PELTONIEMI, J

DUXBURY, T

MURRAY, B

HERKENHOFF, K

FANALE, F

IRVINE, W

SMITH, B

机构：

[1] SPACE RES INST,SOFIA,BULGARIA

[2] ZENT INST KYBERNET & INFORMAT PROZESSE,BERLIN,GERMANY

[3] BROWN UNIV,PROVIDENCE,RI 02912

[4] KHARKOV UNIV,KHARKOV 310077,UKRAINE,USSR

[5] INST KOSMOSFORSCH,O-1199 BERLIN,GERMANY

[6] UNIV HELSINKI,SF-00130 HELSINKI 13,FINLAND

[7] CALTECH,JET PROP LAB,PASADENA,CA 91109

[8] CALTECH,PASADENA,CA 91125

[9] UNIV HAWAII,HONOLULU,HI 96822

[10] UNIV MASSACHUSETTS,AMHERST,MA 01003

[11] UNIV ARIZONA,LUNAR & PLANETARY LAB,TUCSON,AZ 85721

来源：

PLANETARY AND SPACE SCIENCE | 1991年 / 39卷 / 1-2期

关键词：

D O I：

10.1016/0032-0633(91)90150-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

From February to March 1989 the Phobos 2 spacecraft took 37 TV images of Phobos at a distance of 190-1100 km. These images complement Mariner-9 and Viking data by providing higher-resolution coverage of a large region West of the crater Stickney (40-160 W) and by providing disk-resolved measurements of surface brigthness at a greater range of wavelengths and additional phase angles. These images have supported updated mapping and characterization of large craters and grooves, and have provided additional observations of craters' and grooves' bright rims. Variations in surface visible/near-infrared color ratio of almost a factor of 2 have been recognized; these variations appear to be associated with the ejecta of specific large impact craters. Updated determinations of satellite mass and volume allow calculation of a more accurate value of bulk density, 1.90 +/- 0.1 g cm-3. This is significantly lower than the density of meteoritic analogs to Phobos' surface, suggesting a porous interior perhaps containing interstitial ice.

引用

页码：281 / 295

页数：15

共 40 条

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