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Laser induced fluorescence spectrum of IrP in the spectral region between 380-600 nm has been studied. Reacting laser ablated iridium atoms with 1% P$H$_3$ seeded in argon produced the IrP molecule. A few vibronic transitions have been recorded. Preliminary analysis of the rotational structure indicated that these vibronic bands are with $\Omega \prime$ = 0 and $\Omega \prime \prime$ = 0 and is likely to be $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}$\Sigma$ - X $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}$\Sigma$ transition. Vibrational separation of the excited state is estimated to be about 442 cm$\mathrm{<mrow\; data-mjx-texclass="ORD">-1</mrow>}$. The ground state bond length is determined to be 1.766 $\backslash AA$. This work represents the first experimental investigation of the spectra of IrP.