def bc(temp):
    """
    Calculate Bolometric Correction Using the Teff from the previous equation.
    This correction is for main sequence stars of the Teff range given above.
    """
    return (-10.07203 + temp * 0.00434733 - temp ** 2 * 6.159563e-07 + temp **
        3 * 2.851201e-11)
