[Add observation]

Observation 1
Feature(s)	GRS
Filter(s)	ir
Date	2019-05-30 02:00:24
Julian day	2458633.5833333335
System I	71.002205°
System II	321.56424°
System III	288.6865°
Illumination	100.0%
Phase angle	2.4000000953674316°
Solar longitude	338.0°
Eq. diameter	45.68″
Derotation	30.0 min