TARGET: 161 Athor SESSION NUMBER: 396 DATE/TIME: 2008 Mar 17 @ 12:00 FILTER: C TELESCOPE: 0.35 FOCAL LENGTH: 77.00 CAMERA: SBIG ST-8E TEMP (C): -5 EXPOSURE (s): 30 APPROX. RA: 12:59 APPROX. DEC: - 3 EXPOSURE JD: Mid-exposure JD CORR METHOD: Light-time JD CORRECTION: JD = JD(raw) - 0.00908d UNITY CORR: -5 * log(SunDist * EarthDist): -3.0052 NOTE: The unity correction is NOT included in the reduced magnitudes. MAG. METHOD: Instrumental NOTE: For multiple sessions, differential magnitudes include adjustments ADDED to the Obj-CAvg value to compensate for changing phase angle, distance, and refinements to the base average value of the comparison stars. The phase angle calculations include the effects of the phase parameter, G. This value is taken from the MPCORB value at the time the calculations were made. BASE COMP VALUE: -7.976 BASE CORRECTION: +0.000 PHASE/DIST CORR: +0.000 P/D ADJUST (-/DAY):-0.029 P/D ADJUST (+/DAY):+0.029 THE P/D ADJUSTMENTS ARE INCLUDED IN THE VALUES BELOW. ERROR CALC: The magnitude error is calculated by the following: Err = sqrt(sqr(ERR[target]) + sqr(Err[Comps])) where Err[Target] = 1.0857/SNR[target] Err[Comps] = sqrt(sqr(1.0857/SNR[Comp1])... + sqr(1.0857/SNR[CompN])) / N The factor of 1.0857 converts flux to magnitudes (Howell) ********************************************************************************************* ------------------------------------------- J.D. Obj-CAvg Err Session ------------------------------------------- 2454542.95351 -0.874 0.009 396 2454542.95417 -0.871 0.008 396 2454542.96642 -0.857 0.007 396 2454542.96709 -0.895 0.007 396 2454542.96776 -0.910 0.010 396 2454542.98515 -0.870 0.006 396 2454542.98580 -0.860 0.006 396 2454542.99799 -0.866 0.006 396 2454542.99865 -0.869 0.006 396 2454542.99931 -0.857 0.006 396 2454543.01377 -0.865 0.006 396 2454543.01444 -0.871 0.006 396 2454543.01510 -0.852 0.006 396 2454543.02835 -0.869 0.006 396 2454543.02901 -0.839 0.006 396 2454543.02968 -0.858 0.006 396 2454543.05539 -0.839 0.006 396 2454543.05605 -0.855 0.006 396 2454543.05818 -0.843 0.006 396 2454543.08221 -0.816 0.006 396 2454543.08287 -0.835 0.006 396 2454543.08354 -0.822 0.006 396 2454543.10780 -0.853 0.005 396 2454543.10846 -0.841 0.005 396 2454543.10913 -0.843 0.005 396 2454543.13355 -0.880 0.005 396 2454543.13422 -0.866 0.005 396 2454543.13488 -0.859 0.005 396 2454543.15891 -0.892 0.007 396 2454543.15957 -0.885 0.007 396 2454543.16024 -0.884 0.008 396 2454543.18471 -0.892 0.013 396 2454543.18537 -0.910 0.013 396 2454543.18604 -0.914 0.014 396 END OF FIXED DATA SECTION. DO NOT MAKE ANY CHANGES ABOVE THIS LINE.