[Add observation]

Observation 1
Feature(s)	GRS Oval BA
Filter(s)	ch4
Date	2019-06-10 13:54:36
Julian day	2458645.0791666666
System I	84.81625°
System II	247.59401°
System III	217.84818°
Illumination	100.0%
Phase angle	0.20000000298023224°
Solar longitude	338.9°
Eq. diameter	45.95″
Derotation	10.0 min