  Here we report on accurate ab initio calculations to study astrophysically
important electromagnetic transition parameters among different low-lying
states of Sn IV. Our ab initio calculations are based on the sophisticated
relativistic coupled-cluster theory, which almost exhausts many important
electron correlations. To establish the accuracy of the calculations, we
compare our results with the available experiments and estimates the transition
amplitudes in length and velocity gauged forms. Most of these allowed and
forbidden transition wavelengths lie in the infrared region, and they can be
observed in the different cool stellar and interstellar media. For the
improvement of uncertainty, we use experimental energies to the estimations of
the above transition parameters. The presented data will be helpful to find the
abundances of the ion in different astrophysical and laboratory plasma.
