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Observation 1
Feature(s)	GRS
Filter(s)	ch4
Date	2021-07-21 15:12:54
Julian day	2459417.1333333333
System I	280.9521°
System II	313.01495°
System III	128.58359°
Illumination	99.7%
Phase angle	6.199999809265137°
Solar longitude	44.0°
Eq. diameter	47.5″
Derotation	12.0 min