Publication Date:
2019-07-12
Description:
Photometric observations of Titan since 1972 show a cyclical variation of about 10 percent. A minimum value of brightness and albedo apparently occurred in 1984. Spectrophotometric observations, made annualy since 1980 at 8 A resolution, 3295-8880 A, were used to derive the value p-asterisk = 0.156 + or - 0.010 for the integrated geometric albedo in 1984. Variations of the equivalent widths of spectral features were not seen.
Keywords:
LUNAR AND PLANETARY EXPLORATION
Type:
Astrophysical Journal, Part 1 (ISSN 0004-637X); 303; 511-520
Format:
text