🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.52 AU - 0.64 AU

Year: 285 Days

Day: 29.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,964,474 km

• M1: 554,709 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.4

Radius: 11.6

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.57 AU - 0.79 AU

Year: 362 Days

Day: 6.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 70,964,474 km

• M1: 145,559 km (0.109 R)
• M2: 223,499 km (0.103 R)
• M3: 321,336 km (0.054 R)
• M4: 394,639 km (0.113 R)
• M5: 492,925 km (0.106 R)
• M6: 566,826 km (0.106 R)
• M7: 681,867 km (0.104 R)
• M8: 772,673 km (0.073 R)
• M9: 902,823 km (0.098 R)
• M10: 1,000,660 km (0.106 R)
• M11: 1,075,010 km (0.095 R)
• M12: 1,193,791 km (0.077 R)
• M13: 1,269,338 km (0.116 R)
• M14: 1,391,859 km (0.032 R)
• M15: 1,498,971 km (0.096 R)
• M16: 1,604,886 km (0.067 R)
• M17: 1,685,220 km (0.107 R)
• M18: 1,779,167 km (0.119 R)
• M19: 1,870,871 km (0.044 R)
• M20: 1,964,220 km (0.104 R)
• M21: 2,089,733 km (0.083 R)
• M22: 2,195,648 km (0.107 R)
• M23: 2,285,407 km (0.051 R)
• M24: 2,445,327 km (0.047 R)
• M25: 2,519,827 km (0.105 R)
• M26: 2,623,498 km (0.117 R)
• M27: 2,839,966 km (0.071 R)
• M28: 2,928,229 km (0.113 R)
• M29: 3,022,326 km (0.116 R)
• M30: 3,107,597 km (0.11 R)
• M31: 3,218,897 km (0.104 R)
• M32: 3,295,791 km (0.071 R)
• M33: 3,373,133 km (0.103 R)
• M34: 3,445,837 km (0.108 R)
• M35: 3,540,234 km (0.118 R)
• M36: 3,640,913 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966

Radius: 8.5

Gravity: 13.37 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.82 AU - 1.08 AU

Year: 598 Days

Day: 11.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 172.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 70,964,474 km

• M1: 108,608 km (0.03 R)
• M2: 170,542 km (0.109 R)
• M3: 252,820 km (0.096 R)
• M4: 317,447 km (0.118 R)
• M5: 434,582 km (0.107 R)
• M6: 494,720 km (0.073 R)
• M7: 553,662 km (0.096 R)
• M8: 654,341 km (0.094 R)
• M9: 740,809 km (0.114 R)
• M10: 825,930 km (0.111 R)
• M11: 897,587 km (0.11 R)
• M12: 954,285 km (0.101 R)
• M13: 1,041,800 km (0.081 R)
• M14: 1,150,408 km (0.04 R)
• M15: 1,231,340 km (0.073 R)
• M16: 1,307,785 km (0.111 R)
• M17: 1,379,292 km (0.11 R)
• M18: 1,499,270 km (0.108 R)
• M19: 1,785,600 km (0.114 R)
• M20: 2,028,697 km (0.112 R)
• M21: 2,158,099 km (0.076 R)
• M22: 2,251,149 km (0.072 R)
• M23: 2,530,298 km (0.072 R)
• M24: 2,603,901 km (0.082 R)
• M25: 2,661,645 km (0.105 R)
• M26: 2,719,839 km (0.037 R)
• M27: 2,854,477 km (0.091 R)
• M28: 2,939,748 km (0.08 R)
• M29: 3,008,563 km (0.113 R)
• M30: 3,095,330 km (0.072 R)
• M31: 3,253,754 km (0.077 R)
• M32: 3,333,938 km (0.057 R)
• M33: 3,414,871 km (0.086 R)
• M34: 3,469,175 km (0.069 R)
• M35: 3,551,154 km (0.087 R)
• M36: 3,763,733 km (0.102 R)
• M37: 3,904,504 km (0.029 R)
• M38: 4,133,539 km (0.081 R)
• M39: 4,357,188 km (0.077 R)
• M40: 4,675,083 km (0.114 R)
• M41: 4,745,544 km (0.118 R)
• M42: 5,020,953 km (0.112 R)
• M43: 5,144,970 km (0.099 R)
• M44: 5,207,502 km (0.071 R)
• M45: 5,312,071 km (0.089 R)
• M46: 5,396,294 km (0.068 R)
• M47: 5,470,345 km (0.098 R)
• M48: 5,523,453 km (0.111 R)
• M49: 5,715,985 km (0.072 R)
• M50: 5,889,070 km (0.105 R)
• M51: 5,954,444 km (0.039 R)
• M52: 6,085,791 km (0.117 R)
• M53: 6,229,255 km (0.117 R)
• M54: 6,497,185 km (0.083 R)
• M55: 6,643,791 km (0.108 R)
• M56: 6,791,594 km (0.1 R)
• M57: 7,021,077 km (0.072 R)
• M58: 7,229,766 km (0.106 R)
• M59: 7,393,576 km (0.092 R)
• M60: 7,820,378 km (0.096 R)
• M61: 8,048,814 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801

Radius: 11.8

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.78 AU - 2.9 AU

Year: 3090 Days

Day: 13.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 70,964,474 km

• M1: 148,850 km (0.064 R)
• M2: 254,167 km (0.115 R)
• M3: 380,427 km (0.097 R)
• M4: 755,768 km (0.071 R)
• M5: 1,112,111 km (0.109 R)
• M6: 1,197,082 km (0.045 R)
• M7: 1,271,731 km (0.102 R)
• M8: 1,492,538 km (0.098 R)
• M9: 1,614,610 km (0.119 R)
• M10: 1,942,229 km (0.066 R)
• M11: 2,259,975 km (0.119 R)
• M12: 2,385,488 km (0.118 R)
• M13: 2,627,238 km (0.095 R)
• M14: 2,860,311 km (0.075 R)
• M15: 3,222,488 km (0.113 R)
• M16: 3,472,316 km (0.1 R)
• M17: 3,710,027 km (0.055 R)
• M18: 3,877,726 km (0.05 R)
• M19: 4,028,970 km (0.104 R)
• M20: 4,105,414 km (0.1 R)
• M21: 4,182,308 km (0.034 R)
• M22: 4,435,427 km (0.035 R)
• M23: 4,713,829 km (0.083 R)
• M24: 5,142,128 km (0.087 R)
• M25: 5,392,554 km (0.06 R)
• M26: 5,647,020 km (0.117 R)
• M27: 5,862,142 km (0.09 R)
• M28: 6,591,282 km (0.08 R)
• M29: 6,704,229 km (0.03 R)
• M30: 6,978,142 km (0.095 R)
• M31: 7,070,295 km (0.114 R)
• M32: 7,372,482 km (0.117 R)
• M33: 7,513,254 km (0.089 R)
• M34: 8,573,903 km (0.075 R)
• M35: 8,921,269 km (0.066 R)
• M36: 9,121,730 km (0.109 R)
• M37: 9,222,709 km (0.108 R)
• M38: 9,681,077 km (0.057 R)
• M39: 10,567,145 km (0.085 R)
• M40: 10,673,210 km (0.077 R)
• M41: 10,832,831 km (0.063 R)
• M42: 11,479,243 km (0.099 R)
• M43: 11,807,162 km (0.111 R)
• M44: 11,972,318 km (0.091 R)
• M45: 12,110,546 km (0.079 R)
• M46: 12,388,499 km (0.085 R)
• M47: 12,500,398 km (0.12 R)
• M48: 12,640,571 km (0.066 R)
• M49: 12,724,944 km (0.081 R)
• M50: 13,781,105 km (0.086 R)
• M51: 14,334,468 km (0.108 R)
• M52: 14,895,011 km (0.104 R)
• M53: 15,192,861 km (0.117 R)
• M54: 15,342,608 km (0.067 R)
• M55: 15,764,474 km (0.083 R)
• M56: 16,742,994 km (0.046 R)
• M57: 16,835,744 km (0.106 R)
• M58: 16,990,578 km (0.104 R)
• M59: 17,114,894 km (0.072 R)
• M60: 17,521,052 km (0.038 R)
• M61: 17,615,299 km (0.077 R)
• M62: 17,772,526 km (0.099 R)
• M63: 18,120,341 km (0.032 R)
• M64: 19,338,966 km (0.113 R)
• M65: 19,892,777 km (0.069 R)
• M66: 20,220,995 km (0.119 R)
• M67: 20,617,130 km (0.079 R)
• M68: 20,716,612 km (0.114 R)
• M69: 20,849,455 km (0.112 R)
• M70: 20,949,237 km (0.111 R)
• M71: 21,888,562 km (0.054 R)
• M72: 22,023,948 km (0.116 R)
• M73: 22,125,675 km (0.063 R)
• M74: 22,363,535 km (0.091 R)
• M75: 22,533,927 km (0.108 R)
• M76: 23,013,388 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 263.4

Radius: 10.9

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 3.17 AU - 3.23 AU

Year: 3696 Days

Day: 5.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 70,964,474 km

• M1: 138,528 km (0.069 R)
• M2: 219,011 km (0.115 R)
• M3: 340,784 km (0.097 R)
• M4: 472,580 km (0.103 R)
• M5: 608,564 km (0.052 R)
• M6: 990,039 km (0.082 R)
• M7: 1,109,119 km (0.118 R)
• M8: 1,450,950 km (0.077 R)
• M9: 1,518,867 km (0.099 R)
• M10: 1,587,832 km (0.088 R)
• M11: 1,752,988 km (0.118 R)
• M12: 1,874,611 km (0.086 R)
• M13: 1,999,076 km (0.116 R)
• M14: 2,075,222 km (0.081 R)
• M15: 2,497,536 km (0.091 R)
• M16: 2,946,779 km (0.12 R)
• M17: 3,033,845 km (0.06 R)
• M18: 3,195,710 km (0.041 R)
• M19: 3,300,279 km (0.049 R)
• M20: 3,436,413 km (0.116 R)
• M21: 3,777,197 km (0.036 R)
• M22: 4,308,867 km (0.115 R)
• M23: 4,441,411 km (0.105 R)
• M24: 4,795,659 km (0.114 R)
• M25: 4,881,379 km (0.087 R)
• M26: 5,054,314 km (0.084 R)
• M27: 5,748,448 km (0.106 R)
• M28: 5,894,455 km (0.079 R)
• M29: 6,060,359 km (0.117 R)
• M30: 6,134,560 km (0.047 R)
• M31: 6,302,708 km (0.048 R)
• M32: 6,396,655 km (0.12 R)
• M33: 6,624,343 km (0.1 R)
• M34: 7,107,245 km (0.08 R)
• M35: 7,822,622 km (0.113 R)
• M36: 7,984,786 km (0.04 R)
• M37: 8,581,831 km (0.038 R)
• M38: 8,728,138 km (0.108 R)
• M39: 8,875,193 km (0.05 R)
• M40: 9,108,117 km (0.116 R)
• M41: 9,278,658 km (0.089 R)
• M42: 9,688,257 km (0.098 R)
• M43: 9,775,174 km (0.115 R)
• M44: 10,015,727 km (0.04 R)
• M45: 10,125,681 km (0.106 R)
• M46: 10,391,367 km (0.069 R)
• M47: 10,502,668 km (0.11 R)
• M48: 10,749,056 km (0.098 R)
• M49: 11,247,666 km (0.117 R)
• M50: 11,361,958 km (0.031 R)
• M51: 11,800,130 km (0.083 R)
• M52: 12,056,242 km (0.066 R)
• M53: 12,173,377 km (0.068 R)
• M54: 12,337,785 km (0.086 R)
• M55: 12,692,931 km (0.068 R)
• M56: 12,907,603 km (0.105 R)
• M57: 13,656,191 km (0.091 R)
• M58: 13,827,182 km (0.098 R)
• M59: 14,443,674 km (0.046 R)
• M60: 14,842,951 km (0.092 R)
• M61: 15,245,818 km (0.079 R)
• M62: 15,524,968 km (0.115 R)
• M63: 16,243,038 km (0.092 R)
• M64: 16,320,679 km (0.081 R)
• M65: 16,554,052 km (0.071 R)
• M66: 16,632,142 km (0.077 R)
• M67: 16,867,160 km (0.055 R)
• M68: 17,818,154 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.6

Radius: 14.9

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 4.7 AU - 5.14 AU

Year: 7046 Days

Day: 11.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 70,964,474 km

• M1: 291,417 km (0.032 R)
• M2: 417,079 km (0.061 R)
• M3: 533,915 km (0.097 R)
• M4: 1,118,842 km (0.1 R)
• M5: 1,242,560 km (0.082 R)
• M6: 1,446,761 km (0.069 R)
• M7: 1,602,792 km (0.062 R)
• M8: 1,744,162 km (0.075 R)
• M9: 1,953,599 km (0.079 R)
• M10: 2,306,799 km (0.061 R)
• M11: 3,175,514 km (0.053 R)
• M12: 3,565,815 km (0.084 R)
• M13: 3,889,395 km (0.09 R)
• M14: 4,166,450 km (0.111 R)
• M15: 4,279,097 km (0.079 R)
• M16: 4,507,533 km (0.091 R)
• M17: 4,857,892 km (0.118 R)
• M18: 5,006,592 km (0.07 R)
• M19: 5,247,594 km (0.077 R)
• M20: 6,089,531 km (0.12 R)
• M21: 7,516,395 km (0.109 R)
• M22: 7,897,571 km (0.072 R)
• M23: 8,002,738 km (0.12 R)
• M24: 8,391,992 km (0.057 R)
• M25: 8,535,157 km (0.083 R)
• M26: 8,715,273 km (0.1 R)
• M27: 8,969,440 km (0.033 R)
• M28: 9,935,393 km (0.101 R)
• M29: 10,124,933 km (0.056 R)
• M30: 10,277,523 km (0.109 R)
• M31: 11,130,082 km (0.104 R)
• M32: 11,326,952 km (0.057 R)
• M33: 11,884,653 km (0.114 R)
• M34: 12,166,944 km (0.117 R)
• M35: 12,738,109 km (0.109 R)
• M36: 13,401,576 km (0.099 R)
• M37: 13,527,238 km (0.093 R)
• M38: 15,196,451 km (0.118 R)
• M39: 16,479,552 km (0.077 R)
• M40: 16,614,340 km (0.07 R)
• M41: 17,430,396 km (0.087 R)
• M42: 18,120,491 km (0.059 R)
• M43: 18,538,767 km (0.06 R)
• M44: 18,632,265 km (0.107 R)
• M45: 19,956,356 km (0.072 R)
• M46: 20,581,376 km (0.05 R)
• M47: 21,261,747 km (0.106 R)
• M48: 22,345,883 km (0.119 R)
• M49: 23,145,633 km (0.083 R)
• M50: 23,246,163 km (0.036 R)
• M51: 23,650,227 km (0.087 R)
• M52: 23,751,504 km (0.097 R)
• M53: 23,903,945 km (0.1 R)
• M54: 24,005,671 km (0.119 R)
• M55: 24,413,924 km (0.074 R)
• M56: 24,516,398 km (0.102 R)
• M57: 24,979,104 km (0.118 R)
• M58: 25,652,744 km (0.1 R)
• M59: 25,861,283 km (0.114 R)
• M60: 26,384,876 km (0.038 R)
• M61: 26,648,018 km (0.12 R)
• M62: 27,976,747 km (0.075 R)
• M63: 28,191,270 km (0.075 R)
• M64: 29,109,502 km (0.11 R)
• M65: 29,763,544 km (0.106 R)
• M66: 30,312,269 km (0.072 R)
• M67: 30,587,977 km (0.119 R)
• M68: 30,809,083 km (0.118 R)
• M69: 31,252,940 km (0.055 R)
• M70: 31,364,241 km (0.115 R)
• M71: 31,587,142 km (0.042 R)
• M72: 32,259,285 km (0.084 R)
• M73: 33,219,404 km (0.107 R)
• M74: 33,560,637 km (0.053 R)
• M75: 34,074,505 km (0.112 R)
• M76: 35,167,916 km (0.087 R)
• M77: 36,097,667 km (0.094 R)
• M78: 36,389,832 km (0.036 R)
• M79: 38,397,734 km (0.084 R)
• M80: 38,815,561 km (0.069 R)
• M81: 38,995,079 km (0.051 R)
• M82: 39,234,884 km (0.092 R)
• M83: 39,475,138 km (0.109 R)
• M84: 40,441,241 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 795.9

Radius: 7.8

Gravity: 13.08 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 8.18 AU - 9.32 AU

Year: 16712 Days

Day: 20.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 70,964,474 km

• M1: 411,394 km (0.049 R)
• M2: 483,800 km (0.09 R)
• M3: 1,036,115 km (0.068 R)
• M4: 1,164,619 km (0.073 R)
• M5: 1,381,536 km (0.102 R)
• M6: 1,466,209 km (0.119 R)
• M7: 1,640,789 km (0.086 R)
• M8: 2,042,460 km (0.103 R)
• M9: 2,106,936 km (0.116 R)
• M10: 2,439,642 km (0.12 R)
• M11: 2,788,953 km (0.073 R)
• M12: 4,131,893 km (0.117 R)
• M13: 4,632,448 km (0.115 R)
• M14: 5,374,304 km (0.117 R)
• M15: 5,554,120 km (0.111 R)
• M16: 5,873,811 km (0.072 R)
• M17: 6,105,687 km (0.069 R)
• M18: 7,014,495 km (0.088 R)
• M19: 7,509,664 km (0.117 R)
• M20: 8,586,020 km (0.073 R)
• M21: 9,222,559 km (0.068 R)
• M22: 10,540,666 km (0.036 R)
• M23: 10,596,915 km (0.103 R)
• M24: 11,164,339 km (0.087 R)
• M25: 11,625,400 km (0.087 R)
• M26: 12,625,911 km (0.083 R)
• M27: 12,865,267 km (0.091 R)
• M28: 13,045,832 km (0.03 R)
• M29: 13,837,803 km (0.111 R)
• M30: 15,340,663 km (0.114 R)
• M31: 15,532,149 km (0.033 R)
• M32: 15,660,204 km (0.112 R)
• M33: 15,724,382 km (0.081 R)
• M34: 16,436,168 km (0.091 R)
• M35: 16,566,618 km (0.101 R)
• M36: 18,497,926 km (0.026 R)
• M37: 18,769,746 km (0.069 R)
• M38: 19,386,538 km (0.096 R)
• M39: 21,063,231 km (0.056 R)
• M40: 21,632,450 km (0.09 R)
• M41: 23,150,570 km (0.101 R)
• M42: 25,604,723 km (0.109 R)
• M43: 27,673,362 km (0.103 R)
• M44: 29,160,963 km (0.042 R)
• M45: 29,715,672 km (0.057 R)
• M46: 30,273,672 km (0.094 R)
• M47: 30,915,746 km (0.104 R)
• M48: 31,238,429 km (0.116 R)
• M49: 31,968,616 km (0.077 R)
• M50: 32,131,678 km (0.111 R)
• M51: 32,786,468 km (0.051 R)
• M52: 33,528,473 km (0.078 R)
• M53: 34,442,815 km (0.057 R)
• M54: 35,956,746 km (0.076 R)
• M55: 36,466,276 km (0.088 R)
• M56: 36,892,630 km (0.102 R)
• M57: 37,750,275 km (0.108 R)
• M58: 37,922,611 km (0.064 R)
• M59: 38,008,929 km (0.093 R)
• M60: 38,268,033 km (0.068 R)
• M61: 40,010,848 km (0.103 R)
• M62: 41,334,789 km (0.079 R)
• M63: 41,868,554 km (0.102 R)
• M64: 43,212,542 km (0.092 R)
• M65: 43,573,372 km (0.093 R)
• M66: 44,025,756 km (0.055 R)
• M67: 44,843,907 km (0.083 R)
• M68: 45,392,332 km (0.12 R)
• M69: 46,311,013 km (0.119 R)
• M70: 46,495,467 km (0.113 R)
• M71: 47,980,226 km (0.069 R)
• M72: 48,447,270 km (0.087 R)
• M73: 49,009,908 km (0.062 R)
• M74: 51,950,853 km (0.071 R)
• M75: 53,587,752 km (0.116 R)
• M76: 53,878,421 km (0.069 R)
• M77: 56,714,647 km (0.059 R)
• M78: 58,001,787 km (0.069 R)
• M79: 58,101,120 km (0.097 R)
• M80: 58,200,603 km (0.113 R)
• M81: 58,898,477 km (0.061 R)
• M82: 59,599,044 km (0.041 R)
• M83: 60,907,427 km (0.103 R)
• M84: 61,717,350 km (0.068 R)
• M85: 62,123,657 km (0.102 R)
• M86: 62,225,384 km (0.11 R)
• M87: 63,041,141 km (0.078 R)
• M88: 63,143,316 km (0.03 R)
• M89: 64,168,361 km (0.114 R)
• M90: 64,889,273 km (0.117 R)
• M91: 65,612,878 km (0.037 R)
• M92: 66,651,087 km (0.12 R)
• M93: 66,755,207 km (0.049 R)
• M94: 68,849,129 km (0.097 R)
• M95: 70,115,774 km (0.116 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 489 - 17,930 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit