Table 1: Main characteristics of the observed objects.

Object	mag	radius	radius	phase	phase	orbital	max
	at			angle	defect	period	elong
	opp.	km	arcsec	degrees	mas	days	arcsec
Titan	8.3	2440	0.35	6	13.8	15.9	209
Hyperion	14.2	200	0.03	6	1.3	21.3	254
Iapetus	11.9	720	0.10	6	3.5	79.3	610
Uranus	5.5	24 500	1.75	3	34.4	-	-
Ariel	14.4	580	0.04	3	8.1	2.5	15
Umbriel	15.3	585	0.04	3	8.1	4.1	21
Titania	13.9	800	0.06	3	12.3	8.7	35
Oberon	14.2	760	0.05	3	11.8	13.5	47
Neptune	7.8	25 100	1.15	2	15.0	-	-
Triton	13.7	1350	0.06	2	0.8	5.9	17
Pluto	15.0	1200	0.05	2	0.7	-	-