Surface gravity of the planet being landed on. Found on the wiki (maybe the tracking station as well?)
16
Expression 17: "g" equals negative 1.4 2g=−1.42
negative 10−10
1010
17
Leave the remaining equations and constant as they are. Your burn altitude can be found by zooming into the interception of the red and blue lines. On the y-axis will be the altitude and on the x-axis should be the duration of the burn.
18
Expression 19: 0 equals "g" "y" minus StartRoot, "v" squared plus 2 times "G" times "M" left parenthesis, StartFraction, 1 Over "x" plus "r" , EndFraction minus StartFraction, 1 Over "s" plus "r" , EndFraction , right parenthesis , EndRoot plus StartFraction, "F" Over "f" , EndFraction times natural log left parenthesis, StartFraction, "m" Over "m" minus "f" "y" , EndFraction , right parenthesis0=gy−v2+2·G·M1x+r−1s+r+Ff·lnmm−fy
19
Expression 20: negative "x" equals 0.5 times "g" times "y" squared minus "y" times StartRoot, "v" squared plus 2 times "G" times "M" left parenthesis, StartFraction, 1 Over "x" plus "r" , EndFraction minus StartFraction, 1 Over "s" plus "r" , EndFraction , right parenthesis , EndRoot plus StartFraction, "F" Over "f" , EndFraction left parenthesis, StartFraction, left parenthesis, "f" "y" minus "m" , right parenthesis Over "f" , EndFraction times ln left parenthesis, StartFraction, "m" Over "m" minus "f" "y" , EndFraction , right parenthesis plus "y" , right parenthesis−x=0.5·g·y2−y·v2+2·G·M1x+r−1s+r+Fffy−mf·lnmm−fy+y
20
Expression 21: "G" equals 6.6 7 4 0 8 times 10 to the negative 11th powerG=6.67408·10−11
equals=
6.6 7 4 0 8 times 10 to the negative 11th power6.67408×10−11