Definition of the characteristic flags
Option:
0
(
0
=show all flags,
x
=hexadecimal)
1
U
or
u
limit/missing
2
B
or
g
limit/missing
4
V
or
r
limit/missing
8
R
or
i
limit/missing
16
I
or
z
limit/missing
32
not used
64
no catalogued optical magnitude