CONVERSIONS
 Because the first manned missions to estraplanetary bodies were dominated by the US/A, traditional UPSS navigation units are in terms of Miles
 nMiles=nkilomettres x .625
 nMiles=nKilometres x 1.600
 Miles
 nDU=nMiles/30
 nMiles=nDU x 30
UNIVERSAL UNITS
 Astronical Unit (Earth Mean Distance from the Sun)
 nAU=nDU/3100000
 nDU=nAU x 3100000
 nLightyear=n x 195954179106.12033DU
 nParsecs=n x 639202532244.1646000DU
SPEED
 nDU per second=nMiles per seond/30
 nDU per minute=nMiles per minute/30
 nDU per hour=nMilse per hour/30
 nDU per day=nMiles per sidereal day/30
 nMikes (Michaelson)= n x 6200DU/sec
Estimated Time of Arrival Distance time speeds): ETA
two points on one planet (DU, minutes DU per): OP or destination local time HHMM e.g. 0938. 3630 etc
CisPlaetary=planet to furthest moon (DU mnutes DU per): CP
interplanetary (DU/AU hours/days DU per): IP
Interstellar (Lightyears,days/weeks/months Mikes): IST
ETA=DISTANCE(with considerations for orbit)/[avg]SPEED(est)
