Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!julius.cs.uiuc.edu!psuvax1!psuvm!art100 From: ART100@psuvm.psu.edu (Andy Tefft) Newsgroups: comp.binaries.apple2 Subject: Re: Accrete - A planetary formation simulation Message-ID: <90332.184454ART100@psuvm.psu.edu> Date: 28 Nov 90 23:44:54 GMT References: <15734@reed.UUCP> <15735@reed.UUCP> Organization: Penn State University Lines: 238 This is not a binary but I thought it might be useful for people to see what this program does before downloading it. It is *very slow* - took about 3 hours on my //c - and it doesn't print anything except for the occasional "SMASH!" on the screen (There were 8 of these in the 2 hours I paid attention). The program ends by writing an output file like the following: seeds: 0 0 -8286 -27406 SYSTEM CHARACTERISTICS Mass of central star (in solar masses): 1.21 Luminosity of central star (relative to the sun): 2.51 Total main sequence lifetime (in million yrs): 4824.979 Current age of stellar system (in million yrs): 2530.437 Radius of habitable ecosphere (AU): 1.585 Planet #1: Distance from primary star (in A.U.): 0.339 Eccentricity of orbit: 0.015 Mass (in Earth masses): 0.044 Equatorial radius (in Km): 2290.9 Density (in g/cc): 5.269 Escape Velocity (in km/sec): 3.93 Smallest molecular weight retained: 51.36 Surface acceleration (in cm/sec2): 337.36 Surface Gravity (in Earth gees): 0.34 Boiling point of water (celcius): -273.0 Surface Pressure (in atmospheres): 0.000 Surface temperature (Celcius): 317.01 Hydrosphere percentage: 0.00 Cloud cover percentage: 0.00 Ice cover percentage: 0.00 Axial tilt (in degrees): 16 Planetary albedo: 0.084 Length of year (in days): 65.40 Length of day (in hours): 26.09 Planet #2: Distance from primary star (in A.U.): 0.512 Eccentricity of orbit: 0.138 Mass (in Earth masses): 0.611 Equatorial radius (in Km): 5451.8 Density (in g/cc): 5.380 Escape Velocity (in km/sec): 9.45 Smallest molecular weight retained: 8.88 Surface acceleration (in cm/sec2): 819.76 Surface Gravity (in Earth gees): 0.84 Boiling point of water (celcius): -273.0 Surface Pressure (in atmospheres): 0.000 Surface temperature (Celcius): 209.52 Hydrosphere percentage: 0.00 Cloud cover percentage: 0.00 Ice cover percentage: 0.00 Axial tilt (in degrees): 15 Planetary albedo: 0.063 Length of year (in days): 121.56 Length of day (in hours): 16.74 Planet #3: Distance from primary star (in A.U.): 0.933 Eccentricity of orbit: 0.015 Mass (in Earth masses): 1.379 Equatorial radius (in Km): 7108.2 Density (in g/cc): 5.478 Escape Velocity (in km/sec): 12.44 Smallest molecular weight retained: 5.13 Surface acceleration (in cm/sec2): 1088.32 Surface Gravity (in Earth gees): 1.11 Boiling point of water (celcius): 307.9 Surface Pressure (in atmospheres): 127.130 RUNAWAY GREENHOUSE EFFECT Surface temperature (Celcius): 535.74 Hydrosphere percentage: 0.00 Cloud cover percentage: 100.00 Ice cover percentage: 0.00 Axial tilt (in degrees): 18 Planetary albedo: 0.463 Length of year (in days): 298.85 Length of day (in hours): 14.53 Planet #4: Distance from primary star (in A.U.): 1.057 Eccentricity of orbit: 0.004 Mass (in Earth masses): 0.238 Equatorial radius (in Km): 3994.8 Density (in g/cc): 5.317 Escape Velocity (in km/sec): 6.89 Smallest molecular weight retained: 16.74 Surface acceleration (in cm/sec2): 593.64 Surface Gravity (in Earth gees): 0.61 Boiling point of water (celcius): 153.4 Surface Pressure (in atmospheres): 5.447 RUNAWAY GREENHOUSE EFFECT Surface temperature (Celcius): 98.03 Hydrosphere percentage: 100.00 Cloud cover percentage: 100.00 Ice cover percentage: 0.00 Axial tilt (in degrees): 33 Planetary albedo: 0.428 Length of year (in days): 360.72 Length of day (in hours): 19.67 Planet #5: Distance from primary star (in A.U.): 1.591 Eccentricity of orbit: 0.104 Mass (in Earth masses): 0.241 Equatorial radius (in Km): 4014.1 Density (in g/cc): 5.318 Escape Velocity (in km/sec): 6.92 Smallest molecular weight retained: 16.57 Surface acceleration (in cm/sec2): 596.59 Surface Gravity (in Earth gees): 0.61 Boiling point of water (celcius): 31.8 Surface Pressure (in atmospheres): 0.048 Surface temperature (Celcius): 7.37 Hydrosphere percentage: 35.98 Cloud cover percentage: 14.27 Ice cover percentage: 4.42 Axial tilt (in degrees): 24 Planetary albedo: 0.178 Length of year (in days): 665.84 Length of day (in hours): 19.62 Planet #6: Distance from primary star (in A.U.): 1.949 Eccentricity of orbit: 0.027 Mass (in Earth masses): 0.420 Equatorial radius (in Km): 4821.8 Density (in g/cc): 5.350 Escape Velocity (in km/sec): 8.34 Smallest molecular weight retained: 11.42 Surface acceleration (in cm/sec2): 721.01 Surface Gravity (in Earth gees): 0.73 Boiling point of water (celcius): 55.7 Surface Pressure (in atmospheres): 0.161 Surface temperature (Celcius): -47.69 Hydrosphere percentage: 0.00 Cloud cover percentage: 0.44 Ice cover percentage: 71.52 Axial tilt (in degrees): 35 Planetary albedo: 0.523 Length of year (in days): 902.56 Length of day (in hours): 17.85 Planet #7: Gas giant... Distance from primary star (in A.U.): 3.036 Eccentricity of orbit: 0.222 Mass (in Earth masses): 19.638 Equatorial radius (in Km): 26653.6 Density (in g/cc): 1.480 Escape Velocity (in km/sec): 24.24 Smallest molecular weight retained: 1.35 Surface acceleration (in cm/sec2): 1102.36 Axial tilt (in degrees): 19 Planetary albedo: 0.494 Length of year (in days): 1755.48 Length of day (in hours): 12.31 Planet #8: Gas giant... Distance from primary star (in A.U.): 5.365 Eccentricity of orbit: 0.082 Mass (in Earth masses): 1554.897 Equatorial radius (in Km): 100026.8 Density (in g/cc): 2.217 Escape Velocity (in km/sec): 111.35 Smallest molecular weight retained: 0.06 Surface acceleration (in cm/sec2): 6197.38 Axial tilt (in degrees): 27 Planetary albedo: 0.533 Length of year (in days): 4115.07 Length of day (in hours): 5.19 Planet #9: Gas giant... Distance from primary star (in A.U.): 8.323 Eccentricity of orbit: 0.049 Mass (in Earth masses): 171.368 Equatorial radius (in Km): 54533.3 Density (in g/cc): 1.508 Escape Velocity (in km/sec): 50.06 Smallest molecular weight retained: 0.32 Surface acceleration (in cm/sec2): 2297.97 Axial tilt (in degrees): 27 Planetary albedo: 0.500 Length of year (in days): 7966.06 Length of day (in hours): 8.53 Planet #10: Gas giant... Distance from primary star (in A.U.): 14.509 Eccentricity of orbit: 0.095 Mass (in Earth masses): 398.455 Equatorial radius (in Km): 73055.9 Density (in g/cc): 1.458 Escape Velocity (in km/sec): 65.95 Smallest molecular weight retained: 0.18 Surface acceleration (in cm/sec2): 2977.20 Axial tilt (in degrees): 42 Planetary albedo: 0.470 Length of year (in days): 18329.13 Length of day (in hours): 7.49 Planet #11: Gas giant... Distance from primary star (in A.U.): 23.804 Eccentricity of orbit: 0.013 Mass (in Earth masses): 0.689 Equatorial radius (in Km): 11908.7 Density (in g/cc): 0.582 Escape Velocity (in km/sec): 6.79 Smallest molecular weight retained: 17.21 Surface acceleration (in cm/sec2): 193.62 Axial tilt (in degrees): 29 Planetary albedo: 0.464 Length of year (in days): 38535.03 Length of day (in hours): 29.37 Planet #12: Gas giant... Distance from primary star (in A.U.): 36.999 Eccentricity of orbit: 0.027 Mass (in Earth masses): 4.243 Equatorial radius (in Km): 20997.0 Density (in g/cc): 0.654 Escape Velocity (in km/sec): 12.70 Smallest molecular weight retained: 4.93 Surface acceleration (in cm/sec2): 383.78 Axial tilt (in degrees): 47 Planetary albedo: 0.488 Length of year (in days): 74674.47 Length of day (in hours): 20.86 Planet #13: Distance from primary star (in A.U.): 51.906 Eccentricity of orbit: 0.104 Mass (in Earth masses): 0.058 Equatorial radius (in Km): 3347.5 Density (in g/cc): 2.203 Escape Velocity (in km/sec): 3.71 Smallest molecular weight retained: 57.53 Surface acceleration (in cm/sec2): 206.10 Surface Gravity (in Earth gees): 0.21 Boiling point of water (celcius): -74.5 Surface Pressure (in atmospheres): 0.000 Surface temperature (Celcius): -226.10 Hydrosphere percentage: 0.00 Cloud cover percentage: 0.00 Ice cover percentage: 0.05 Axial tilt (in degrees): 49 Planetary albedo: 0.141 Length of year (in days): 124083.89 Length of day (in hours): 33.38