🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.16 AU - 1.32 AU

Year: 512 Days

Day: 28.6 Hours

Environment

Temp: 2 °C

Axial Tilt: 23 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.29 AU - 1.39 AU

Year: 575 Days

Day: 40.8 Hours

Environment

Temp: -26 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 76,719,522 km

• M1: 267,780 km (0.118 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.5

Radius: 1.83

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.79 AU - 2.27 AU

Year: 1073 Days

Day: 27.1 Hours

Environment

Temp: -80 °C

Axial Tilt: 42 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.34 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.1

Radius: 11.1

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 5.23 AU - 8.05 AU

Year: 6345 Days

Day: 11.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 76,719,522 km

• M1: 148,102 km (0.039 R)
• M2: 229,184 km (0.069 R)
• M3: 482,004 km (0.073 R)
• M4: 715,676 km (0.106 R)
• M5: 931,696 km (0.112 R)
• M6: 1,111,063 km (0.061 R)
• M7: 1,193,193 km (0.07 R)
• M8: 1,302,100 km (0.075 R)
• M9: 1,465,610 km (0.085 R)
• M10: 1,676,394 km (0.077 R)
• M11: 1,813,276 km (0.11 R)
• M12: 1,883,138 km (0.091 R)
• M13: 1,968,259 km (0.099 R)
• M14: 2,172,011 km (0.113 R)
• M15: 2,506,512 km (0.111 R)
• M16: 2,955,904 km (0.11 R)
• M17: 3,055,537 km (0.111 R)
• M18: 3,326,757 km (0.088 R)
• M19: 3,606,057 km (0.037 R)
• M20: 4,002,491 km (0.098 R)
• M21: 4,224,644 km (0.104 R)
• M22: 4,299,592 km (0.119 R)
• M23: 4,584,876 km (0.119 R)
• M24: 4,895,890 km (0.106 R)
• M25: 4,994,624 km (0.065 R)
• M26: 5,153,796 km (0.044 R)
• M27: 5,416,191 km (0.055 R)
• M28: 5,682,924 km (0.083 R)
• M29: 5,912,108 km (0.09 R)
• M30: 6,229,555 km (0.106 R)
• M31: 6,683,285 km (0.07 R)
• M32: 6,903,194 km (0.038 R)
• M33: 7,036,186 km (0.062 R)
• M34: 7,531,505 km (0.102 R)
• M35: 7,691,425 km (0.097 R)
• M36: 7,875,730 km (0.092 R)
• M37: 8,225,041 km (0.106 R)
• M38: 8,603,374 km (0.098 R)
• M39: 9,181,569 km (0.095 R)
• M40: 9,352,560 km (0.063 R)
• M41: 10,630,275 km (0.044 R)
• M42: 10,758,480 km (0.1 R)
• M43: 10,913,015 km (0.115 R)
• M44: 11,042,417 km (0.089 R)
• M45: 11,328,748 km (0.067 R)
• M46: 11,407,286 km (0.074 R)
• M47: 11,643,950 km (0.096 R)
• M48: 11,829,152 km (0.111 R)
• M49: 12,283,032 km (0.064 R)
• M50: 12,390,743 km (0.07 R)
• M51: 12,933,634 km (0.1 R)
• M52: 13,070,516 km (0.092 R)
• M53: 13,207,996 km (0.063 R)
• M54: 13,512,128 km (0.104 R)
• M55: 14,127,125 km (0.074 R)
• M56: 14,211,648 km (0.114 R)
• M57: 14,296,470 km (0.072 R)
• M58: 14,466,413 km (0.12 R)
• M59: 15,066,750 km (0.048 R)
• M60: 15,471,561 km (0.112 R)
• M61: 15,733,657 km (0.108 R)
• M62: 16,114,832 km (0.112 R)
• M63: 16,351,047 km (0.116 R)
• M64: 16,439,908 km (0.114 R)
• M65: 16,737,159 km (0.113 R)
• M66: 17,036,206 km (0.028 R)
• M67: 17,276,759 km (0.068 R)
• M68: 17,518,509 km (0.056 R)
• M69: 17,609,315 km (0.089 R)
• M70: 17,852,561 km (0.063 R)
• M71: 18,066,336 km (0.093 R)
• M72: 18,188,857 km (0.103 R)
• M73: 18,867,583 km (0.091 R)
• M74: 19,178,896 km (0.056 R)
• M75: 19,272,694 km (0.065 R)
• M76: 19,869,739 km (0.067 R)
• M77: 19,964,584 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 117

Radius: 9.9

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 5.94 AU - 7.58 AU

Year: 6518 Days

Day: 11.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 76,719,522 km

• M1: 143,016 km (0.096 R)
• M2: 264,489 km (0.097 R)
• M3: 365,617 km (0.102 R)
• M4: 818,600 km (0.092 R)
• M5: 908,209 km (0.07 R)
• M6: 1,265,897 km (0.098 R)
• M7: 1,359,246 km (0.044 R)
• M8: 1,479,224 km (0.07 R)
• M9: 1,577,809 km (0.05 R)
• M10: 1,729,950 km (0.076 R)
• M11: 2,049,042 km (0.085 R)
• M12: 2,272,092 km (0.105 R)
• M13: 2,459,389 km (0.103 R)
• M14: 2,681,691 km (0.095 R)
• M15: 2,787,906 km (0.118 R)
• M16: 2,864,500 km (0.058 R)
• M17: 3,019,932 km (0.091 R)
• M18: 3,306,861 km (0.08 R)
• M19: 3,602,616 km (0.073 R)
• M20: 3,821,627 km (0.099 R)
• M21: 3,958,659 km (0.115 R)
• M22: 4,027,623 km (0.035 R)
• M23: 4,468,788 km (0.085 R)
• M24: 4,576,947 km (0.11 R)
• M25: 4,667,902 km (0.066 R)
• M26: 4,740,906 km (0.036 R)
• M27: 4,851,309 km (0.062 R)
• M28: 4,962,610 km (0.09 R)
• M29: 5,416,041 km (0.113 R)
• M30: 5,765,053 km (0.086 R)
• M31: 6,041,510 km (0.119 R)
• M32: 6,241,672 km (0.111 R)
• M33: 6,545,954 km (0.073 R)
• M34: 6,710,362 km (0.11 R)
• M35: 6,834,528 km (0.095 R)
• M36: 6,959,443 km (0.1 R)
• M37: 7,106,198 km (0.105 R)
• M38: 7,531,056 km (0.109 R)
• M39: 7,638,467 km (0.102 R)
• M40: 8,205,892 km (0.075 R)
• M41: 8,383,165 km (0.117 R)
• M42: 8,945,504 km (0.104 R)
• M43: 9,173,790 km (0.071 R)
• M44: 9,543,147 km (0.036 R)
• M45: 10,011,837 km (0.089 R)
• M46: 10,177,592 km (0.114 R)
• M47: 10,272,736 km (0.078 R)
• M48: 11,044,661 km (0.042 R)
• M49: 11,191,417 km (0.049 R)
• M50: 11,462,338 km (0.114 R)
• M51: 11,960,350 km (0.103 R)
• M52: 12,465,392 km (0.116 R)
• M53: 13,496,421 km (0.042 R)
• M54: 14,340,901 km (0.118 R)
• M55: 14,688,865 km (0.117 R)
• M56: 15,256,888 km (0.05 R)
• M57: 15,475,152 km (0.087 R)
• M58: 15,997,697 km (0.047 R)
• M59: 16,947,344 km (0.097 R)
• M60: 17,088,415 km (0.109 R)
• M61: 17,886,370 km (0.083 R)
• M62: 17,972,539 km (0.113 R)
• M63: 18,058,857 km (0.111 R)
• M64: 18,174,197 km (0.112 R)
• M65: 18,260,814 km (0.11 R)
• M66: 18,376,602 km (0.085 R)
• M67: 19,429,622 km (0.111 R)
• M68: 19,666,136 km (0.101 R)
• M69: 19,903,847 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 412.6

Radius: 14.2

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 8.25 AU - 8.79 AU

Year: 9223 Days

Day: 12.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 76,719,522 km

• M1: 384,915 km (0.071 R)
• M2: 528,978 km (0.068 R)
• M3: 655,687 km (0.095 R)
• M4: 838,646 km (0.103 R)
• M5: 1,024,297 km (0.069 R)
• M6: 1,156,242 km (0.116 R)
• M7: 1,531,583 km (0.026 R)
• M8: 1,986,809 km (0.052 R)
• M9: 2,133,864 km (0.088 R)
• M10: 2,416,754 km (0.105 R)
• M11: 2,506,363 km (0.11 R)
• M12: 3,514,802 km (0.081 R)
• M13: 3,668,439 km (0.103 R)
• M14: 3,929,637 km (0.09 R)
• M15: 4,170,041 km (0.116 R)
• M16: 4,278,499 km (0.08 R)
• M17: 4,415,381 km (0.091 R)
• M18: 4,581,584 km (0.068 R)
• M19: 4,834,854 km (0.104 R)
• M20: 5,238,020 km (0.047 R)
• M21: 5,414,246 km (0.099 R)
• M22: 5,592,567 km (0.116 R)
• M23: 5,924,375 km (0.076 R)
• M24: 6,231,649 km (0.072 R)
• M25: 6,894,218 km (0.067 R)
• M26: 7,745,579 km (0.105 R)
• M27: 8,286,076 km (0.097 R)
• M28: 8,491,923 km (0.071 R)
• M29: 8,943,858 km (0.077 R)
• M30: 9,510,984 km (0.092 R)
• M31: 9,943,920 km (0.108 R)
• M32: 10,162,782 km (0.088 R)
• M33: 10,754,591 km (0.081 R)
• M34: 11,092,383 km (0.095 R)
• M35: 11,357,470 km (0.099 R)
• M36: 11,932,674 km (0.099 R)
• M37: 12,282,434 km (0.118 R)
• M38: 12,399,868 km (0.12 R)
• M39: 12,952,333 km (0.109 R)
• M40: 13,191,690 km (0.044 R)
• M41: 13,472,784 km (0.08 R)
• M42: 14,741,075 km (0.052 R)
• M43: 15,200,340 km (0.104 R)
• M44: 15,834,187 km (0.091 R)
• M45: 16,133,083 km (0.119 R)
• M46: 16,866,412 km (0.07 R)
• M47: 18,500,170 km (0.112 R)
• M48: 18,634,808 km (0.075 R)
• M49: 18,995,489 km (0.101 R)
• M50: 19,085,996 km (0.054 R)
• M51: 19,723,881 km (0.052 R)
• M52: 20,322,572 km (0.108 R)
• M53: 20,507,923 km (0.114 R)
• M54: 21,537,605 km (0.098 R)
• M55: 21,632,151 km (0.099 R)
• M56: 22,344,836 km (0.117 R)
• M57: 22,488,300 km (0.094 R)
• M58: 23,161,939 km (0.031 R)
• M59: 23,501,377 km (0.117 R)
• M60: 23,842,310 km (0.107 R)
• M61: 24,578,481 km (0.099 R)
• M62: 24,875,134 km (0.045 R)
• M63: 25,771,973 km (0.107 R)
• M64: 26,831,724 km (0.045 R)
• M65: 26,933,301 km (0.09 R)
• M66: 27,239,079 km (0.119 R)
• M67: 27,392,417 km (0.079 R)
• M68: 28,266,817 km (0.068 R)
• M69: 28,733,413 km (0.102 R)
• M70: 28,941,503 km (0.059 R)
• M71: 29,674,084 km (0.113 R)
• M72: 30,359,990 km (0.087 R)
• M73: 30,465,906 km (0.083 R)
• M74: 31,157,646 km (0.103 R)
• M75: 31,425,127 km (0.061 R)
• M76: 32,178,053 km (0.114 R)
• M77: 34,472,585 km (0.084 R)
• M78: 34,915,545 km (0.107 R)
• M79: 35,360,449 km (0.101 R)
• M80: 35,695,249 km (0.079 R)
• M81: 35,807,148 km (0.081 R)
• M82: 37,045,519 km (0.101 R)
• M83: 37,669,941 km (0.042 R)
• M84: 38,297,803 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 506.2

Radius: 9.9

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 9.43 AU - 12.87 AU

Year: 13808 Days

Day: 10 Hours

Environment

Temp: -182 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 76,719,522 km

• M1: 263,591 km (0.09 R)
• M2: 401,670 km (0.119 R)
• M3: 930,798 km (0.108 R)
• M4: 1,052,870 km (0.117 R)
• M5: 1,313,469 km (0.101 R)
• M6: 2,078,962 km (0.074 R)
• M7: 2,464,027 km (0.108 R)
• M8: 2,665,086 km (0.097 R)
• M9: 2,752,900 km (0.064 R)
• M10: 3,651,235 km (0.102 R)
• M11: 3,980,799 km (0.056 R)
• M12: 4,081,628 km (0.104 R)
• M13: 4,149,247 km (0.109 R)
• M14: 4,285,680 km (0.1 R)
• M15: 5,393,302 km (0.11 R)
• M16: 5,467,802 km (0.092 R)
• M17: 6,347,886 km (0.076 R)
• M18: 6,426,575 km (0.082 R)
• M19: 7,478,098 km (0.117 R)
• M20: 7,644,601 km (0.028 R)
• M21: 7,939,009 km (0.109 R)
• M22: 8,366,111 km (0.109 R)
• M23: 9,466,254 km (0.117 R)
• M24: 10,194,048 km (0.088 R)
• M25: 12,533,160 km (0.118 R)
• M26: 12,930,193 km (0.109 R)
• M27: 13,130,355 km (0.119 R)
• M28: 13,381,829 km (0.081 R)
• M29: 13,584,384 km (0.119 R)
• M30: 14,924,632 km (0.116 R)
• M31: 15,877,121 km (0.098 R)
• M32: 16,091,495 km (0.107 R)
• M33: 17,563,239 km (0.058 R)
• M34: 18,287,143 km (0.085 R)
• M35: 19,994,803 km (0.098 R)
• M36: 20,226,231 km (0.108 R)
• M37: 20,458,706 km (0.102 R)
• M38: 20,750,421 km (0.088 R)
• M39: 20,926,199 km (0.063 R)
• M40: 21,871,657 km (0.114 R)
• M41: 22,169,956 km (0.071 R)
• M42: 22,289,634 km (0.098 R)
• M43: 22,529,739 km (0.107 R)
• M44: 23,073,078 km (0.088 R)
• M45: 23,498,534 km (0.078 R)
• M46: 23,742,977 km (0.062 R)
• M47: 24,357,525 km (0.097 R)
• M48: 24,419,309 km (0.101 R)
• M49: 24,604,811 km (0.068 R)
• M50: 25,476,817 km (0.048 R)
• M51: 25,602,329 km (0.063 R)
• M52: 25,790,823 km (0.111 R)
• M53: 26,358,995 km (0.114 R)
• M54: 26,422,425 km (0.069 R)
• M55: 29,261,792 km (0.096 R)
• M56: 31,723,425 km (0.044 R)
• M57: 31,858,363 km (0.098 R)
• M58: 31,993,599 km (0.095 R)
• M59: 32,061,217 km (0.094 R)
• M60: 32,604,108 km (0.085 R)
• M61: 32,672,175 km (0.051 R)
• M62: 34,666,614 km (0.114 R)
• M63: 34,805,740 km (0.118 R)
• M64: 35,014,578 km (0.071 R)
• M65: 36,417,657 km (0.082 R)
• M66: 37,126,003 km (0.076 R)
• M67: 37,624,612 km (0.116 R)
• M68: 38,556,458 km (0.065 R)
• M69: 38,916,839 km (0.119 R)
• M70: 40,442,737 km (0.073 R)
• M71: 40,955,858 km (0.115 R)
• M72: 41,618,576 km (0.069 R)
• M73: 41,914,182 km (0.063 R)
• M74: 42,359,086 km (0.048 R)
• M75: 43,328,330 km (0.11 R)
• M76: 46,050,114 km (0.07 R)
• M77: 46,356,042 km (0.089 R)
• M78: 47,277,565 km (0.071 R)
• M79: 47,508,993 km (0.095 R)
• M80: 48,282,713 km (0.1 R)
• M81: 48,515,786 km (0.078 R)
• M82: 49,295,042 km (0.045 R)
• M83: 51,023,944 km (0.069 R)
• M84: 52,932,514 km (0.045 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 285.4

Radius: 7

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 16.57 AU - 21.97 AU

Year: 31371 Days

Day: 17.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 76,719,522 km

• M1: 152,440 km (0.119 R)
• M2: 390,002 km (0.094 R)
• M3: 505,342 km (0.114 R)
• M4: 1,660,985 km (0.07 R)
• M5: 2,330,884 km (0.071 R)
• M6: 2,402,093 km (0.109 R)
• M7: 2,844,753 km (0.109 R)
• M8: 2,921,048 km (0.047 R)
• M9: 5,458,378 km (0.057 R)
• M10: 5,601,243 km (0.106 R)
• M11: 6,992,803 km (0.054 R)
• M12: 7,199,846 km (0.115 R)
• M13: 7,252,056 km (0.116 R)
• M14: 7,304,266 km (0.093 R)
• M15: 7,567,259 km (0.102 R)
• M16: 7,673,473 km (0.039 R)
• M17: 7,726,580 km (0.073 R)
• M18: 8,375,087 km (0.119 R)
• M19: 9,839,052 km (0.077 R)
• M20: 10,481,874 km (0.101 R)
• M21: 10,600,206 km (0.078 R)
• M22: 10,778,676 km (0.071 R)
• M23: 11,259,035 km (0.102 R)
• M24: 12,427,993 km (0.037 R)
• M25: 12,616,187 km (0.118 R)
• M26: 13,377,939 km (0.119 R)
• M27: 14,416,597 km (0.093 R)
• M28: 15,481,136 km (0.066 R)
• M29: 16,022,830 km (0.093 R)
• M30: 16,364,511 km (0.111 R)
• M31: 16,433,176 km (0.108 R)
• M32: 16,639,622 km (0.09 R)
• M33: 16,708,736 km (0.106 R)
• M34: 17,055,204 km (0.086 R)
• M35: 17,474,228 km (0.104 R)
• M36: 17,825,933 km (0.08 R)
• M37: 19,256,088 km (0.081 R)
• M38: 20,574,345 km (0.059 R)
• M39: 21,020,296 km (0.04 R)
• M40: 21,244,394 km (0.096 R)
• M41: 21,921,623 km (0.084 R)
• M42: 22,148,862 km (0.031 R)
• M43: 22,682,328 km (0.053 R)
• M44: 22,758,922 km (0.101 R)
• M45: 23,684,185 km (0.106 R)
• M46: 23,995,349 km (0.029 R)
• M47: 24,386,248 km (0.073 R)
• M48: 25,253,617 km (0.097 R)
• M49: 25,810,719 km (0.106 R)
• M50: 26,613,760 km (0.077 R)
• M51: 26,775,326 km (0.064 R)
• M52: 27,424,880 km (0.112 R)
• M53: 27,997,541 km (0.037 R)
• M54: 28,822,423 km (0.096 R)
• M55: 29,822,934 km (0.109 R)
• M56: 30,580,647 km (0.088 R)
• M57: 31,089,280 km (0.052 R)
• M58: 31,259,522 km (0.039 R)
• M59: 32,287,110 km (0.079 R)
• M60: 34,904,325 km (0.106 R)
• M61: 35,081,149 km (0.05 R)
• M62: 35,702,579 km (0.098 R)
• M63: 39,047,288 km (0.042 R)
• M64: 39,230,994 km (0.092 R)
• M65: 39,507,002 km (0.085 R)
• M66: 40,246,016 km (0.11 R)
• M67: 40,803,418 km (0.085 R)
• M68: 40,896,468 km (0.109 R)
• M69: 42,584,979 km (0.088 R)
• M70: 42,679,525 km (0.065 R)
• M71: 43,153,002 km (0.101 R)
• M72: 44,296,229 km (0.05 R)
• M73: 44,583,606 km (0.073 R)
• M74: 45,352,988 km (0.091 R)
• M75: 46,126,858 km (0.088 R)
• M76: 46,515,364 km (0.074 R)
• M77: 47,687,313 km (0.111 R)
• M78: 48,474,198 km (0.057 R)
• M79: 51,966,411 km (0.115 R)
• M80: 54,305,074 km (0.114 R)
• M81: 54,510,023 km (0.097 R)
• M82: 56,677,846 km (0.106 R)
• M83: 56,885,787 km (0.057 R)
• M84: 58,453,274 km (0.072 R)
• M85: 60,140,887 km (0.077 R)
• M86: 61,203,780 km (0.102 R)
• M87: 61,737,545 km (0.097 R)
• M88: 62,487,479 km (0.069 R)
• M89: 63,888,015 km (0.118 R)
• M90: 65,299,022 km (0.088 R)
• M91: 68,704,767 km (0.063 R)
• M92: 72,167,808 km (0.11 R)
• M93: 76,145,466 km (0.043 R)
• M94: 76,260,207 km (0.076 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: 163 - 10,807 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit