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Re: Captain Cook's Sep 07th, 1773 Lunar revisited
From: Paul Hirose
Date: 2012 Jul 23, 22:09 -0700
From: Paul Hirose
Date: 2012 Jul 23, 22:09 -0700
Antoine Couëtte wrote: > I will shortly (well past middle of the night here ... ) rework this Lunar for an assumed position of S16°45'and W151°35' (see my last post), a position reasonably close from Omananeno harbor which also seems to accomodate all other constraints, including the horizon not being obstructed by land masses in both Sun and Moon Azimuths. Here is my solution. INITIAL DATA 17:07:18.5 UT1 (from Kermit's original message July 19) +16.4 s ∆T S16°45' W151°35' (= -16.75° -151.55°) assumed position 105°47'04" (= 105.7844°) lunar distance, limb to limb 43°29'00" (= 43.4833°) Moon refacted upper limb 12°38'24" (= 12.6400°) Sun refracted lower limb 3'50" (= .0639°) dip 77.5° temperature SOLUTION Adjust time only: 17:06:57.9 UT1 +.5705° (= +34.25') Moon altitude intercept -.5007° (= -30.04') Sun altitude intercept (intercept = observed - computed) -.178°/min Moon altitude rate +.236°/min Sun altitude rate -.0037°/min topocentric lunar distance rate Adjust time and position: 17:05:54.82 UT1 -16.5108° -151.8963° (= S16°30.65' W151°53.78') --