🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.56 AU - 0.92 AU

Year: 270 Days

Day: 18.5 Hours

Environment

Temp: 13 °C

Axial Tilt: 12.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 110,476,151 km

• M1: 131,796 km (0.084 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.83 AU - 1.35 AU

Year: 483 Days

Day: 43.8 Hours

Environment

Temp: -49 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.89 AU - 1.39 AU

Year: 517 Days

Day: 24.8 Hours

Environment

Temp: -54 °C

Axial Tilt: 35.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 110,476,151 km

• M1: 217,216 km (0.093 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.76

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.29 AU - 2.11 AU

Year: 941 Days

Day: 28.9 Hours

Environment

Temp: -106 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 110,476,151 km

• M1: 1,699,133 km (0.104 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 2.03 AU - 2.47 AU

Year: 1433 Days

Day: 46.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 110,476,151 km

• M1: 126,261 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.5

Radius: 11

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 4 AU - 4.84 AU

Year: 3946 Days

Day: 8.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 110,476,151 km

• M1: 142,866 km (0.098 R)
• M2: 219,610 km (0.114 R)
• M3: 356,043 km (0.118 R)
• M4: 468,541 km (0.11 R)
• M5: 746,194 km (0.107 R)
• M6: 910,453 km (0.097 R)
• M7: 1,050,925 km (0.054 R)
• M8: 1,341,145 km (0.09 R)
• M9: 1,628,373 km (0.036 R)
• M10: 2,041,861 km (0.045 R)
• M11: 2,341,207 km (0.076 R)
• M12: 2,620,955 km (0.11 R)
• M13: 2,722,382 km (0.074 R)
• M14: 2,825,006 km (0.116 R)
• M15: 3,087,700 km (0.084 R)
• M16: 3,231,015 km (0.097 R)
• M17: 3,339,922 km (0.033 R)
• M18: 3,580,326 km (0.073 R)
• M19: 3,731,120 km (0.05 R)
• M20: 3,807,415 km (0.091 R)
• M21: 4,375,588 km (0.063 R)
• M22: 4,557,350 km (0.072 R)
• M23: 4,659,375 km (0.104 R)
• M24: 5,309,378 km (0.069 R)
• M25: 5,612,314 km (0.092 R)
• M26: 5,699,978 km (0.059 R)
• M27: 6,077,413 km (0.081 R)
• M28: 6,417,300 km (0.063 R)
• M29: 6,950,467 km (0.108 R)
• M30: 7,163,045 km (0.092 R)
• M31: 7,258,189 km (0.091 R)
• M32: 7,570,400 km (0.119 R)
• M33: 8,034,602 km (0.117 R)
• M34: 8,307,619 km (0.089 R)
• M35: 8,407,700 km (0.067 R)
• M36: 8,609,058 km (0.097 R)
• M37: 8,710,336 km (0.036 R)
• M38: 9,067,875 km (0.106 R)
• M39: 10,062,551 km (0.118 R)
• M40: 10,222,770 km (0.095 R)
• M41: 10,330,032 km (0.094 R)
• M42: 10,437,743 km (0.117 R)
• M43: 10,763,118 km (0.078 R)
• M44: 11,871,339 km (0.046 R)
• M45: 12,239,350 km (0.103 R)
• M46: 13,453,935 km (0.076 R)
• M47: 14,105,434 km (0.047 R)
• M48: 14,434,998 km (0.112 R)
• M49: 14,525,355 km (0.048 R)
• M50: 14,646,080 km (0.08 R)
• M51: 14,918,947 km (0.04 R)
• M52: 15,101,905 km (0.106 R)
• M53: 15,316,129 km (0.06 R)
• M54: 15,469,766 km (0.097 R)
• M55: 15,778,686 km (0.066 R)
• M56: 17,034,710 km (0.082 R)
• M57: 17,225,896 km (0.068 R)
• M58: 17,353,802 km (0.082 R)
• M59: 18,095,059 km (0.072 R)
• M60: 18,879,550 km (0.083 R)
• M61: 19,408,678 km (0.063 R)
• M62: 19,541,820 km (0.047 R)
• M63: 20,414,125 km (0.114 R)
• M64: 21,059,640 km (0.105 R)
• M65: 21,162,115 km (0.049 R)
• M66: 21,849,966 km (0.092 R)
• M67: 21,953,787 km (0.03 R)
• M68: 22,196,584 km (0.061 R)
• M69: 22,895,356 km (0.114 R)
• M70: 22,965,667 km (0.061 R)
• M71: 23,141,743 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888.2

Radius: 13.7

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 5.44 AU - 7.34 AU

Year: 6858 Days

Day: 9.5 Hours

Environment

Temp: -188 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 110,476,151 km

• M1: 210,783 km (0.107 R)
• M2: 320,887 km (0.04 R)
• M3: 413,040 km (0.107 R)
• M4: 569,669 km (0.096 R)
• M5: 825,780 km (0.043 R)
• M6: 1,052,122 km (0.091 R)
• M7: 1,173,446 km (0.056 R)
• M8: 1,318,406 km (0.105 R)
• M9: 1,450,501 km (0.082 R)
• M10: 1,627,026 km (0.117 R)
• M11: 1,748,949 km (0.095 R)
• M12: 2,002,367 km (0.048 R)
• M13: 2,245,464 km (0.11 R)
• M14: 2,858,815 km (0.029 R)
• M15: 3,496,401 km (0.074 R)
• M16: 3,818,186 km (0.074 R)
• M17: 4,121,721 km (0.068 R)
• M18: 4,262,193 km (0.12 R)
• M19: 4,375,887 km (0.115 R)
• M20: 4,577,246 km (0.103 R)
• M21: 4,664,611 km (0.056 R)
• M22: 6,103,743 km (0.101 R)
• M23: 6,264,560 km (0.091 R)
• M24: 6,788,602 km (0.09 R)
• M25: 7,984,038 km (0.104 R)
• M26: 8,089,505 km (0.088 R)
• M27: 8,913,939 km (0.086 R)
• M28: 9,170,200 km (0.061 R)
• M29: 9,652,503 km (0.104 R)
• M30: 9,953,644 km (0.094 R)
• M31: 10,067,189 km (0.038 R)
• M32: 10,181,332 km (0.048 R)
• M33: 10,680,839 km (0.104 R)
• M34: 11,544,468 km (0.037 R)
• M35: 11,864,158 km (0.056 R)
• M36: 12,512,216 km (0.11 R)
• M37: 14,182,477 km (0.066 R)
• M38: 14,524,906 km (0.118 R)
• M39: 15,174,460 km (0.096 R)
• M40: 15,877,570 km (0.09 R)
• M41: 15,966,282 km (0.037 R)
• M42: 16,367,353 km (0.094 R)
• M43: 17,043,087 km (0.098 R)
• M44: 17,958,327 km (0.115 R)
• M45: 18,328,881 km (0.044 R)
• M46: 19,740,935 km (0.106 R)
• M47: 19,836,378 km (0.108 R)
• M48: 20,508,372 km (0.066 R)
• M49: 22,121,935 km (0.112 R)
• M50: 22,221,118 km (0.102 R)
• M51: 23,019,223 km (0.116 R)
• M52: 23,573,483 km (0.111 R)
• M53: 24,081,068 km (0.057 R)
• M54: 24,541,082 km (0.119 R)
• M55: 24,952,326 km (0.118 R)
• M56: 25,055,549 km (0.076 R)
• M57: 25,834,056 km (0.115 R)
• M58: 26,199,973 km (0.086 R)
• M59: 26,304,841 km (0.117 R)
• M60: 26,884,233 km (0.042 R)
• M61: 27,255,086 km (0.116 R)
• M62: 27,841,510 km (0.092 R)
• M63: 28,593,688 km (0.032 R)
• M64: 30,282,947 km (0.095 R)
• M65: 31,001,017 km (0.086 R)
• M66: 31,501,422 km (0.111 R)
• M67: 31,948,420 km (0.088 R)
• M68: 33,472,673 km (0.052 R)
• M69: 33,700,511 km (0.12 R)
• M70: 34,100,535 km (0.066 R)
• M71: 35,774,236 km (0.067 R)
• M72: 36,065,503 km (0.107 R)
• M73: 36,357,519 km (0.115 R)
• M74: 36,767,865 km (0.119 R)
• M75: 36,885,300 km (0.101 R)
• M76: 38,185,904 km (0.094 R)
• M77: 38,722,362 km (0.065 R)
• M78: 39,081,247 km (0.117 R)
• M79: 40,346,546 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 777.6

Radius: 13

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 5.6 AU - 8.86 AU

Year: 8254 Days

Day: 14.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 110,476,151 km

• M1: 182,061 km (0.104 R)
• M2: 436,527 km (0.102 R)
• M3: 594,203 km (0.106 R)
• M4: 822,190 km (0.11 R)
• M5: 904,918 km (0.083 R)
• M6: 1,008,589 km (0.118 R)
• M7: 1,191,098 km (0.101 R)
• M8: 1,365,081 km (0.071 R)
• M9: 1,465,610 km (0.074 R)
• M10: 1,760,917 km (0.087 R)
• M11: 1,938,639 km (0.106 R)
• M12: 2,169,169 km (0.08 R)
• M13: 2,264,014 km (0.037 R)
• M14: 2,458,043 km (0.046 R)
• M15: 2,785,213 km (0.118 R)
• M16: 2,940,945 km (0.094 R)
• M17: 3,180,301 km (0.052 R)
• M18: 3,763,583 km (0.117 R)
• M19: 4,111,997 km (0.084 R)
• M20: 4,531,918 km (0.077 R)
• M21: 4,716,073 km (0.086 R)
• M22: 6,040,612 km (0.092 R)
• M23: 6,141,890 km (0.091 R)
• M24: 6,901,847 km (0.085 R)
• M25: 7,328,949 km (0.06 R)
• M26: 10,471,103 km (0.067 R)
• M27: 11,754,503 km (0.079 R)
• M28: 12,307,566 km (0.054 R)
• M29: 13,571,668 km (0.078 R)
• M30: 14,106,780 km (0.11 R)
• M31: 14,241,717 km (0.074 R)
• M32: 15,336,175 km (0.089 R)
• M33: 15,474,853 km (0.09 R)
• M34: 15,707,028 km (0.069 R)
• M35: 15,800,228 km (0.047 R)
• M36: 16,363,165 km (0.066 R)
• M37: 16,980,555 km (0.09 R)
• M38: 17,267,933 km (0.107 R)
• M39: 17,799,304 km (0.094 R)
• M40: 17,945,162 km (0.105 R)
• M41: 18,140,088 km (0.04 R)
• M42: 19,927,334 km (0.046 R)
• M43: 20,331,996 km (0.106 R)
• M44: 20,535,449 km (0.103 R)
• M45: 21,098,236 km (0.095 R)
• M46: 21,510,827 km (0.06 R)
• M47: 22,030,231 km (0.053 R)
• M48: 22,448,806 km (0.086 R)
• M49: 23,081,455 km (0.07 R)
• M50: 23,559,869 km (0.061 R)
• M51: 23,666,682 km (0.076 R)
• M52: 24,364,556 km (0.112 R)
• M53: 24,526,571 km (0.111 R)
• M54: 26,665,222 km (0.115 R)
• M55: 26,999,573 km (0.104 R)
• M56: 27,223,222 km (0.065 R)
• M57: 27,447,469 km (0.085 R)
• M58: 29,034,404 km (0.059 R)
• M59: 29,321,033 km (0.095 R)
• M60: 29,608,411 km (0.063 R)
• M61: 31,001,316 km (0.096 R)
• M62: 31,118,302 km (0.061 R)
• M63: 31,529,098 km (0.084 R)
• M64: 32,060,020 km (0.098 R)
• M65: 32,415,465 km (0.11 R)
• M66: 32,534,246 km (0.1 R)
• M67: 32,831,945 km (0.118 R)
• M68: 33,670,142 km (0.12 R)
• M69: 34,454,783 km (0.087 R)
• M70: 34,636,694 km (0.084 R)
• M71: 35,184,372 km (0.058 R)
• M72: 35,428,665 km (0.088 R)
• M73: 35,796,227 km (0.038 R)
• M74: 36,165,136 km (0.08 R)
• M75: 36,288,404 km (0.089 R)
• M76: 36,720,742 km (0.104 R)
• M77: 38,404,616 km (0.116 R)
• M78: 39,541,111 km (0.095 R)
• M79: 39,667,970 km (0.117 R)
• M80: 40,688,676 km (0.101 R)
• M81: 41,009,264 km (0.081 R)
• M82: 41,588,657 km (0.076 R)
• M83: 42,430,444 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.5

Radius: 4.2

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 14.33 AU - 15.01 AU

Year: 23857 Days

Day: 16.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 110,476,151 km

• M1: 62,682 km (0.118 R)
• M2: 144,212 km (0.113 R)
• M3: 187,745 km (0.084 R)
• M4: 257,308 km (0.055 R)
• M5: 1,404,724 km (0.113 R)
• M6: 1,444,667 km (0.112 R)
• M7: 1,485,058 km (0.078 R)
• M8: 1,843,195 km (0.1 R)
• M9: 2,227,064 km (0.071 R)
• M10: 3,990,673 km (0.081 R)
• M11: 4,047,520 km (0.111 R)
• M12: 5,056,109 km (0.105 R)
• M13: 5,876,952 km (0.08 R)
• M14: 6,203,525 km (0.115 R)
• M15: 6,435,551 km (0.075 R)
• M16: 7,532,402 km (0.061 R)
• M17: 7,638,168 km (0.067 R)
• M18: 7,994,361 km (0.106 R)
• M19: 8,945,354 km (0.118 R)
• M20: 9,548,084 km (0.115 R)
• M21: 9,970,100 km (0.106 R)
• M22: 10,515,982 km (0.105 R)
• M23: 10,634,165 km (0.034 R)
• M24: 12,169,488 km (0.114 R)
• M25: 13,047,328 km (0.096 R)
• M26: 13,387,065 km (0.106 R)
• M27: 13,729,644 km (0.108 R)
• M28: 16,071,449 km (0.104 R)
• M29: 17,918,683 km (0.075 R)
• M30: 17,965,807 km (0.099 R)
• M31: 19,347,642 km (0.089 R)
• M32: 19,929,428 km (0.089 R)
• M33: 20,026,817 km (0.074 R)
• M34: 20,222,341 km (0.093 R)
• M35: 20,418,613 km (0.031 R)
• M36: 20,763,287 km (0.114 R)
• M37: 21,209,388 km (0.031 R)
• M38: 22,060,600 km (0.057 R)
• M39: 22,465,112 km (0.097 R)
• M40: 23,025,207 km (0.085 R)
• M41: 23,538,327 km (0.117 R)
• M42: 23,589,789 km (0.056 R)
• M43: 24,942,603 km (0.053 R)
• M44: 28,323,066 km (0.095 R)
• M45: 28,927,890 km (0.032 R)
• M46: 29,870,955 km (0.098 R)
• M47: 30,486,550 km (0.065 R)
• M48: 30,598,898 km (0.107 R)
• M49: 31,559,616 km (0.097 R)
• M50: 32,015,141 km (0.114 R)
• M51: 32,243,727 km (0.049 R)
• M52: 33,336,838 km (0.076 R)
• M53: 36,330,441 km (0.092 R)
• M54: 36,449,671 km (0.077 R)
• M55: 37,828,963 km (0.105 R)
• M56: 38,920,429 km (0.096 R)
• M57: 41,444,893 km (0.046 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 963.8

Radius: 4.5

Gravity: 47.6 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 15.7 AU - 18.1 AU

Year: 29499 Days

Day: 16.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 110,476,151 km

• M1: 59,390 km (0.11 R)
• M2: 601,234 km (0.047 R)
• M3: 1,006,345 km (0.051 R)
• M4: 1,441,525 km (0.094 R)
• M5: 2,889,483 km (0.099 R)
• M6: 4,250,375 km (0.099 R)
• M7: 4,362,124 km (0.086 R)
• M8: 4,531,768 km (0.038 R)
• M9: 4,646,061 km (0.097 R)
• M10: 5,172,047 km (0.1 R)
• M11: 5,533,027 km (0.056 R)
• M12: 5,594,063 km (0.063 R)
• M13: 7,795,695 km (0.098 R)
• M14: 8,558,793 km (0.096 R)
• M15: 8,700,163 km (0.08 R)
• M16: 9,273,123 km (0.06 R)
• M17: 9,564,241 km (0.117 R)
• M18: 9,932,251 km (0.118 R)
• M19: 10,006,452 km (0.108 R)
• M20: 10,155,302 km (0.048 R)
• M21: 10,304,900 km (0.113 R)
• M22: 12,796,003 km (0.094 R)
• M23: 12,876,786 km (0.057 R)
• M24: 14,274,629 km (0.088 R)
• M25: 14,526,252 km (0.081 R)
• M26: 15,119,109 km (0.102 R)
• M27: 15,979,745 km (0.114 R)
• M28: 16,241,093 km (0.067 R)
• M29: 16,856,239 km (0.108 R)
• M30: 17,033,363 km (0.04 R)
• M31: 17,122,224 km (0.054 R)
• M32: 18,563,899 km (0.104 R)
• M33: 18,838,561 km (0.093 R)
• M34: 20,608,902 km (0.049 R)
• M35: 21,561,840 km (0.064 R)
• M36: 22,237,424 km (0.12 R)
• M37: 22,431,752 km (0.115 R)
• M38: 23,116,162 km (0.098 R)
• M39: 23,510,353 km (0.055 R)
• M40: 26,228,546 km (0.114 R)
• M41: 30,111,359 km (0.073 R)
• M42: 30,541,752 km (0.117 R)
• M43: 30,865,930 km (0.098 R)
• M44: 32,064,060 km (0.106 R)
• M45: 32,173,715 km (0.097 R)
• M46: 32,283,520 km (0.041 R)
• M47: 34,955,936 km (0.072 R)
• M48: 35,068,882 km (0.042 R)
• M49: 37,814,153 km (0.087 R)
• M50: 38,978,324 km (0.109 R)
• M51: 39,918,097 km (0.111 R)
• M52: 40,272,345 km (0.083 R)
• M53: 41,222,441 km (0.041 R)
• M54: 42,540,548 km (0.089 R)
• M55: 42,661,124 km (0.059 R)
• M56: 43,629,471 km (0.092 R)
• M57: 44,849,890 km (0.09 R)
• M58: 45,464,289 km (0.098 R)
• M59: 46,329,264 km (0.099 R)
• M60: 50,862,229 km (0.073 R)
• M61: 51,631,461 km (0.065 R)
• M62: 51,888,620 km (0.099 R)
• M63: 52,017,424 km (0.054 R)
• M64: 53,961,897 km (0.093 R)
• M65: 56,061,952 km (0.073 R)
• M66: 58,858,534 km (0.09 R)
• M67: 63,069,116 km (0.071 R)
• M68: 63,344,077 km (0.098 R)
• M69: 64,586,338 km (0.025 R)
• M70: 69,493,148 km (0.093 R)
• M71: 70,346,304 km (0.111 R)
• M72: 73,070,781 km (0.106 R)
• M73: 73,215,143 km (0.107 R)
• M74: 76,854,560 km (0.101 R)
• M75: 77,295,125 km (0.112 R)
• M76: 78,770,160 km (0.083 R)
• M77: 78,918,113 km (0.114 R)
• M78: 79,066,215 km (0.069 R)
• M79: 79,362,718 km (0.114 R)
• M80: 79,956,771 km (0.093 R)
• M81: 82,047,551 km (0.048 R)
• M82: 89,351,218 km (0.098 R)
• M83: 91,520,237 km (0.049 R)
• M84: 91,675,819 km (0.073 R)
• M85: 91,987,282 km (0.068 R)
• M86: 93,863,389 km (0.118 R)
• M87: 94,491,550 km (0.112 R)
• M88: 96,226,138 km (0.089 R)
• M89: 97,018,109 km (0.046 R)
• M90: 101,976,381 km (0.109 R)
• M91: 102,622,045 km (0.087 R)
• M92: 103,107,340 km (0.044 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 437 - 10,601 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit