The mass-luminosity (M-L), mass-radius (M-R), and mass-effective temperature (M-T_eff_) diagrams for a subset of galactic nearby main-sequence stars with masses and radii accurate to {<=}3% and luminosities accurate to {1M_{sun} is clearly evident on the M-R diagram, but it is not clear on the M-T_eff diagram based on published temperatures. Effective temperatures can be calculated directly using the well known Stephan-Boltzmann law by employing the accurately known values of M and R with the newly defined MLRs. With the calculated temperatures, stellar temperature evolution within the main sequence for stars with M>1M_{sun} is clearly visible on the M-T_eff diagram. Our study asserts that it is now possible to compute the effective temperature of a main-sequence star with an accuracy of ~6%, as long as its observed radius error is adequately small (<1%) and its observed mass error is reasonably small (<6%).

Cone search capability for table J/AJ/149/131/table2 (The basic stellar parameters and relative errors of the stars selected for the calibration sample)

Cone search capability for table J/AJ/149/131/table7 (Comparing published and calculated (empirical) effective temperatures)