[Add observation]

Observation 1
Feature(s)	N/A
Filter(s)	polar
Date	2013-04-18 23:55:00
Julian day	2456401.496527778
Coord. system	System III
System I	216.27°
System II	88.18°
System III	29.68°
Illumination	100.0%
Phase angle	-1.100000023841858°
Solar longitude	284.1°
Eq. diameter	18.73″
Derotation	0.0 min