We measured the radial velocity using our best
spectrum, that obtained in February, 1997.
The average value of the radial velocity from numerous metal
lines (
) and from the
absorption line (
) agree
within the accuracy of measurement.
This radial velocity is consistent with a membership
of an old population as suggested by the low
metallicity (see Table1). It should be noted also that the
value of radial velocity we derived agrees with the value of
which was given by Omont et al. (1993)
from CO data and
by Decin
et al. (1998) from optical spectrum. There is still no sign of
an essential temporal variability of
for the object.