[Add observation]

Observation 1
Feature(s)	GRS
Filter(s)	rgb
Date	2020-05-17 10:04:03
Julian day	2458986.9194444446
System I	266.7608°
System II	341.36014°
System III	42.57173°
Illumination	99.299995%
Phase angle	9.800000190734863°
Solar longitude	6.9°
Eq. diameter	42.74″
Derotation	12.0 min