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FATAL ERROR in
action number 1
of Create Event
for object oSun:

Variable oSun.mass(100039, -2147483648) not set before reading it.
 at gml_Script_return_clean_orbit_speed (line 22) - _temp_spd = sqrt((Grav_Constant*(_planet.mass+mass))/point_distance(x,y,_planet.x,_planet.y))
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stack frame is
gml_Script_return_clean_orbit_speed (line 22)
called from - gml_RoomCC_rGame_1_Create (line 13) - var _spd = return_clean_orbit_speed(inst_sun);