  We estimate the solar system motion relative to the cosmic microwave
background using type Ia supernovae (SNe) measurements. We take into account
the correlations in the error bars of the SNe measurements arising from
correlated peculiar velocities. Without accounting for correlations in the
peculiar velocities, the SNe data we use appear to detect the peculiar velocity
of the solar system at about the 3.5 sigma level. However, when the
correlations are correctly accounted for, the SNe data only detects the solar
system peculiar velocity at about the 2.5 sigma level. We forecast that the
solar system peculiar velocity will be detected at the 9 sigma level by GAIA
and the 11 sigma level by the LSST. For these surveys we find the correlations
are much less important as most of the signal comes from higher redshifts where
the number density of SNe is insufficient for the correlations to be important.
