🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888.1

Radius: 8.8

Gravity: 11.47 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.56 AU - 0.78 AU

Year: 366 Days

Day: 14.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 85,260,089 km

• M1: 109,954 km (0.082 R)
• M2: 190,438 km (0.058 R)
• M3: 359,035 km (0.058 R)
• M4: 470,934 km (0.093 R)
• M5: 548,127 km (0.08 R)
• M6: 622,327 km (0.115 R)
• M7: 700,268 km (0.118 R)
• M8: 815,608 km (0.117 R)
• M9: 875,746 km (0.074 R)
• M10: 959,970 km (0.086 R)
• M11: 1,023,848 km (0.086 R)
• M12: 1,089,222 km (0.054 R)
• M13: 1,151,305 km (0.064 R)
• M14: 1,244,205 km (0.069 R)
• M15: 1,324,540 km (0.115 R)
• M16: 1,406,669 km (0.108 R)
• M17: 1,501,215 km (0.114 R)
• M18: 1,587,084 km (0.101 R)
• M19: 1,669,063 km (0.09 R)
• M20: 1,871,918 km (0.076 R)
• M21: 1,935,497 km (0.119 R)
• M22: 2,332,530 km (0.098 R)
• M23: 2,553,336 km (0.089 R)
• M24: 2,695,604 km (0.119 R)
• M25: 2,781,024 km (0.039 R)
• M26: 2,860,610 km (0.111 R)
• M27: 2,968,022 km (0.105 R)
• M28: 3,028,908 km (0.089 R)
• M29: 3,117,769 km (0.119 R)
• M30: 3,172,971 km (0.1 R)
• M31: 3,340,221 km (0.109 R)
• M32: 3,410,831 km (0.12 R)
• M33: 3,510,613 km (0.109 R)
• M34: 3,567,909 km (0.052 R)
• M35: 3,698,209 km (0.113 R)
• M36: 3,822,824 km (0.113 R)
• M37: 4,091,203 km (0.053 R)
• M38: 4,235,265 km (0.11 R)
• M39: 4,296,451 km (0.096 R)
• M40: 4,365,715 km (0.102 R)
• M41: 4,646,360 km (0.115 R)
• M42: 4,852,656 km (0.115 R)
• M43: 4,924,762 km (0.085 R)
• M44: 4,981,160 km (0.095 R)
• M45: 5,159,631 km (0.089 R)
• M46: 5,233,233 km (0.1 R)
• M47: 5,365,028 km (0.1 R)
• M48: 5,481,266 km (0.08 R)
• M49: 5,674,098 km (0.083 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.2

Radius: 14.6

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.2 AU - 1.44 AU

Year: 1011 Days

Day: 6.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 85,260,089 km

• M1: 183,108 km (0.095 R)
• M2: 320,439 km (0.084 R)
• M3: 444,455 km (0.068 R)
• M4: 556,205 km (0.115 R)
• M5: 656,884 km (0.096 R)
• M6: 811,419 km (0.063 R)
• M7: 907,461 km (0.111 R)
• M8: 1,003,054 km (0.118 R)
• M9: 1,205,908 km (0.078 R)
• M10: 1,323,193 km (0.09 R)
• M11: 1,433,896 km (0.119 R)
• M12: 1,536,969 km (0.086 R)
• M13: 1,670,859 km (0.112 R)
• M14: 1,762,562 km (0.086 R)
• M15: 1,993,392 km (0.103 R)
• M16: 2,084,946 km (0.077 R)
• M17: 2,355,568 km (0.067 R)
• M18: 2,459,239 km (0.091 R)
• M19: 2,658,055 km (0.12 R)
• M20: 2,841,612 km (0.069 R)
• M21: 2,959,495 km (0.094 R)
• M22: 3,050,749 km (0.108 R)
• M23: 3,286,665 km (0.101 R)
• M24: 3,425,193 km (0.116 R)
• M25: 3,536,194 km (0.118 R)
• M26: 3,769,118 km (0.087 R)
• M27: 3,999,499 km (0.117 R)
• M28: 4,093,147 km (0.094 R)
• M29: 4,226,888 km (0.116 R)
• M30: 4,434,230 km (0.053 R)
• M31: 4,620,629 km (0.111 R)
• M32: 4,768,283 km (0.095 R)
• M33: 5,034,716 km (0.087 R)
• M34: 5,135,994 km (0.085 R)
• M35: 5,237,870 km (0.091 R)
• M36: 5,383,429 km (0.117 R)
• M37: 5,801,854 km (0.112 R)
• M38: 6,104,640 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.2

Radius: 11.3

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.6 AU - 2.12 AU

Year: 1692 Days

Day: 10.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 85,260,089 km

• M1: 143,165 km (0.098 R)
• M2: 238,309 km (0.108 R)
• M3: 332,556 km (0.084 R)
• M4: 490,831 km (0.085 R)
• M5: 614,548 km (0.066 R)
• M6: 743,950 km (0.119 R)
• M7: 831,615 km (0.093 R)
• M8: 909,705 km (0.076 R)
• M9: 1,018,313 km (0.096 R)
• M10: 1,219,223 km (0.108 R)
• M11: 1,301,950 km (0.108 R)
• M12: 1,410,110 km (0.065 R)
• M13: 1,489,247 km (0.115 R)
• M14: 1,611,019 km (0.078 R)
• M15: 1,864,588 km (0.066 R)
• M16: 2,050,089 km (0.11 R)
• M17: 2,122,345 km (0.108 R)
• M18: 2,232,449 km (0.087 R)
• M19: 2,335,073 km (0.116 R)
• M20: 2,535,534 km (0.086 R)
• M21: 2,711,910 km (0.044 R)
• M22: 2,821,715 km (0.047 R)
• M23: 3,212,764 km (0.085 R)
• M24: 3,566,413 km (0.108 R)
• M25: 4,080,282 km (0.086 R)
• M26: 4,346,117 km (0.088 R)
• M27: 4,463,552 km (0.048 R)
• M28: 4,546,279 km (0.079 R)
• M29: 4,629,605 km (0.104 R)
• M30: 4,725,498 km (0.112 R)
• M31: 4,882,725 km (0.069 R)
• M32: 5,252,082 km (0.073 R)
• M33: 5,516,122 km (0.098 R)
• M34: 5,681,727 km (0.119 R)
• M35: 5,861,993 km (0.088 R)
• M36: 5,939,933 km (0.034 R)
• M37: 6,481,029 km (0.072 R)
• M38: 6,628,981 km (0.115 R)
• M39: 6,764,517 km (0.079 R)
• M40: 6,859,810 km (0.085 R)
• M41: 6,955,703 km (0.077 R)
• M42: 7,357,373 km (0.062 R)
• M43: 7,624,854 km (0.103 R)
• M44: 7,866,754 km (0.068 R)
• M45: 8,096,835 km (0.101 R)
• M46: 8,431,486 km (0.085 R)
• M47: 8,666,953 km (0.067 R)
• M48: 8,815,204 km (0.074 R)
• M49: 8,949,393 km (0.107 R)
• M50: 9,144,319 km (0.094 R)
• M51: 9,249,936 km (0.042 R)
• M52: 9,371,259 km (0.09 R)
• M53: 9,553,918 km (0.109 R)
• M54: 9,737,924 km (0.104 R)
• M55: 10,000,618 km (0.118 R)
• M56: 10,281,263 km (0.1 R)
• M57: 10,422,633 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.8

Radius: 12.9

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 2.34 AU - 3.1 AU

Year: 2991 Days

Day: 12.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 85,260,089 km

• M1: 242,049 km (0.074 R)
• M2: 458,218 km (0.078 R)
• M3: 608,115 km (0.095 R)
• M4: 715,975 km (0.059 R)
• M5: 924,964 km (0.101 R)
• M6: 1,393,055 km (0.077 R)
• M7: 1,612,067 km (0.116 R)
• M8: 1,879,996 km (0.089 R)
• M9: 2,363,497 km (0.119 R)
• M10: 2,487,065 km (0.046 R)
• M11: 2,943,936 km (0.103 R)
• M12: 3,319,427 km (0.051 R)
• M13: 3,599,474 km (0.085 R)
• M14: 3,758,497 km (0.057 R)
• M15: 3,903,457 km (0.093 R)
• M16: 3,984,988 km (0.073 R)
• M17: 4,383,816 km (0.105 R)
• M18: 4,502,597 km (0.114 R)
• M19: 4,588,167 km (0.11 R)
• M20: 4,900,677 km (0.074 R)
• M21: 5,148,560 km (0.093 R)
• M22: 5,256,121 km (0.07 R)
• M23: 5,509,989 km (0.1 R)
• M24: 5,619,943 km (0.087 R)
• M25: 5,712,245 km (0.073 R)
• M26: 5,954,594 km (0.026 R)
• M27: 6,086,389 km (0.06 R)
• M28: 6,430,165 km (0.087 R)
• M29: 6,682,238 km (0.086 R)
• M30: 6,839,166 km (0.112 R)
• M31: 7,017,038 km (0.103 R)
• M32: 7,764,728 km (0.116 R)
• M33: 7,867,651 km (0.116 R)
• M34: 8,116,732 km (0.116 R)
• M35: 8,389,449 km (0.056 R)
• M36: 8,558,793 km (0.098 R)
• M37: 8,750,727 km (0.093 R)
• M38: 8,901,073 km (0.118 R)
• M39: 9,269,533 km (0.102 R)
• M40: 9,510,685 km (0.119 R)
• M41: 9,598,947 km (0.047 R)
• M42: 10,066,590 km (0.11 R)
• M43: 10,496,086 km (0.063 R)
• M44: 10,587,191 km (0.119 R)
• M45: 10,793,337 km (0.113 R)
• M46: 10,954,753 km (0.096 R)
• M47: 11,070,392 km (0.102 R)
• M48: 11,678,507 km (0.071 R)
• M49: 12,129,844 km (0.069 R)
• M50: 12,321,629 km (0.056 R)
• M51: 12,417,970 km (0.082 R)
• M52: 12,538,695 km (0.093 R)
• M53: 12,829,813 km (0.116 R)
• M54: 12,951,884 km (0.066 R)
• M55: 13,692,095 km (0.062 R)
• M56: 13,816,859 km (0.104 R)
• M57: 14,522,213 km (0.117 R)
• M58: 14,725,966 km (0.102 R)
• M59: 14,956,346 km (0.054 R)
• M60: 15,602,310 km (0.108 R)
• M61: 15,968,077 km (0.105 R)
• M62: 16,152,082 km (0.075 R)
• M63: 16,363,165 km (0.12 R)
• M64: 17,243,698 km (0.06 R)
• M65: 17,405,413 km (0.089 R)
• M66: 17,676,185 km (0.05 R)
• M67: 17,784,793 km (0.027 R)
• M68: 18,194,392 km (0.051 R)
• M69: 18,331,573 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 482.8

Radius: 12.2

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 2.9 AU - 2.96 AU

Year: 3344 Days

Day: 10 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 85,260,089 km

• M1: 152,440 km (0.1 R)
• M2: 242,199 km (0.06 R)
• M3: 333,603 km (0.103 R)
• M4: 721,062 km (0.096 R)
• M5: 885,919 km (0.047 R)
• M6: 978,669 km (0.058 R)
• M7: 1,075,010 km (0.082 R)
• M8: 1,220,419 km (0.038 R)
• M9: 1,372,710 km (0.1 R)
• M10: 1,854,714 km (0.103 R)
• M11: 1,962,874 km (0.119 R)
• M12: 2,045,302 km (0.041 R)
• M13: 2,416,754 km (0.062 R)
• M14: 2,520,575 km (0.066 R)
• M15: 2,610,632 km (0.095 R)
• M16: 3,093,834 km (0.075 R)
• M17: 3,174,467 km (0.036 R)
• M18: 3,337,828 km (0.043 R)
• M19: 3,844,815 km (0.094 R)
• M20: 4,412,389 km (0.11 R)
• M21: 4,558,397 km (0.09 R)
• M22: 5,254,924 km (0.117 R)
• M23: 5,704,765 km (0.068 R)
• M24: 5,884,283 km (0.107 R)
• M25: 6,371,972 km (0.077 R)
• M26: 6,767,359 km (0.107 R)
• M27: 6,893,919 km (0.078 R)
• M28: 7,128,039 km (0.118 R)
• M29: 8,135,282 km (0.109 R)
• M30: 8,747,137 km (0.104 R)
• M31: 9,070,268 km (0.082 R)
• M32: 9,186,656 km (0.03 R)
• M33: 9,326,978 km (0.099 R)
• M34: 9,515,173 km (0.057 R)
• M35: 9,943,322 km (0.111 R)
• M36: 10,304,900 km (0.097 R)
• M37: 10,843,003 km (0.059 R)
• M38: 11,016,238 km (0.044 R)
• M39: 11,290,151 km (0.088 R)
• M40: 11,390,382 km (0.083 R)
• M41: 11,591,741 km (0.107 R)
• M42: 12,279,741 km (0.106 R)
• M43: 12,486,186 km (0.088 R)
• M44: 12,693,828 km (0.11 R)
• M45: 13,376,443 km (0.105 R)
• M46: 13,615,501 km (0.091 R)
• M47: 14,043,949 km (0.106 R)
• M48: 15,273,045 km (0.113 R)
• M49: 15,746,223 km (0.115 R)
• M50: 16,196,064 km (0.065 R)
• M51: 16,394,131 km (0.06 R)
• M52: 16,821,533 km (0.091 R)
• M53: 17,022,143 km (0.105 R)
• M54: 17,194,779 km (0.101 R)
• M55: 17,368,014 km (0.118 R)
• M56: 17,454,780 km (0.08 R)
• M57: 18,655,902 km (0.114 R)
• M58: 18,833,923 km (0.094 R)
• M59: 18,982,773 km (0.063 R)
• M60: 19,191,761 km (0.093 R)
• M61: 19,581,763 km (0.06 R)
• M62: 20,126,299 km (0.029 R)
• M63: 20,492,066 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92

Radius: 13.9

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 3.5 AU - 4.64 AU

Year: 5475 Days

Day: 6.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 85,260,089 km

• M1: 288,574 km (0.117 R)
• M2: 461,061 km (0.056 R)
• M3: 865,573 km (0.106 R)
• M4: 1,033,572 km (0.113 R)
• M5: 1,164,919 km (0.105 R)
• M6: 1,424,621 km (0.113 R)
• M7: 1,703,920 km (0.098 R)
• M8: 1,793,529 km (0.088 R)
• M9: 1,942,678 km (0.109 R)
• M10: 2,517,134 km (0.104 R)
• M11: 2,607,341 km (0.115 R)
• M12: 3,115,525 km (0.104 R)
• M13: 3,310,750 km (0.072 R)
• M14: 3,698,807 km (0.079 R)
• M15: 3,801,880 km (0.04 R)
• M16: 4,025,978 km (0.035 R)
• M17: 4,692,885 km (0.12 R)
• M18: 5,014,820 km (0.115 R)
• M19: 5,112,806 km (0.09 R)
• M20: 5,227,997 km (0.109 R)
• M21: 5,327,479 km (0.117 R)
• M22: 5,427,560 km (0.045 R)
• M23: 6,163,432 km (0.064 R)
• M24: 6,392,018 km (0.084 R)
• M25: 6,821,663 km (0.074 R)
• M26: 7,353,483 km (0.086 R)
• M27: 7,633,830 km (0.069 R)
• M28: 8,013,210 km (0.102 R)
• M29: 8,711,533 km (0.03 R)
• M30: 8,869,359 km (0.096 R)
• M31: 9,268,336 km (0.084 R)
• M32: 9,530,731 km (0.046 R)
• M33: 9,673,148 km (0.116 R)
• M34: 10,332,875 km (0.04 R)
• M35: 10,879,804 km (0.107 R)
• M36: 11,522,477 km (0.093 R)
• M37: 11,630,786 km (0.083 R)
• M38: 12,265,829 km (0.078 R)
• M39: 13,115,096 km (0.113 R)
• M40: 13,250,931 km (0.087 R)
• M41: 13,364,475 km (0.118 R)
• M42: 13,638,389 km (0.101 R)
• M43: 13,868,022 km (0.11 R)
• M44: 14,052,626 km (0.07 R)
• M45: 14,401,039 km (0.118 R)
• M46: 14,752,444 km (0.113 R)
• M47: 15,272,746 km (0.116 R)
• M48: 15,535,290 km (0.105 R)
• M49: 16,088,952 km (0.079 R)
• M50: 16,234,361 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 814.5

Radius: 3.8

Gravity: 56.41 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 8.71 AU - 11.71 AU

Year: 21755 Days

Day: 20.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 85,260,089 km

• M1: 68,815 km (0.066 R)
• M2: 780,751 km (0.026 R)
• M3: 1,237,474 km (0.037 R)
• M4: 1,492,089 km (0.048 R)
• M5: 2,048,144 km (0.032 R)
• M6: 2,425,131 km (0.07 R)
• M7: 3,071,693 km (0.067 R)
• M8: 3,327,206 km (0.104 R)
• M9: 3,813,100 km (0.099 R)
• M10: 4,227,187 km (0.084 R)
• M11: 5,706,710 km (0.109 R)
• M12: 6,125,734 km (0.104 R)
• M13: 6,392,766 km (0.12 R)
• M14: 6,446,621 km (0.118 R)
• M15: 7,104,552 km (0.072 R)
• M16: 7,726,132 km (0.106 R)
• M17: 7,841,023 km (0.119 R)
• M18: 7,956,512 km (0.074 R)
• M19: 8,542,188 km (0.041 R)
• M20: 9,754,679 km (0.081 R)
• M21: 10,955,501 km (0.074 R)
• M22: 11,084,604 km (0.094 R)
• M23: 11,671,775 km (0.115 R)
• M24: 12,740,203 km (0.09 R)
• M25: 12,944,105 km (0.113 R)
• M26: 13,561,945 km (0.068 R)
• M27: 13,909,311 km (0.112 R)
• M28: 14,330,130 km (0.088 R)
• M29: 14,754,988 km (0.086 R)
• M30: 15,400,203 km (0.107 R)
• M31: 17,616,047 km (0.115 R)
• M32: 18,760,919 km (0.106 R)
• M33: 19,070,138 km (0.072 R)
• M34: 20,165,943 km (0.039 R)
• M35: 20,961,055 km (0.06 R)
• M36: 22,010,036 km (0.057 R)
• M37: 22,581,948 km (0.09 R)
• M38: 23,907,236 km (0.11 R)
• M39: 24,074,636 km (0.05 R)
• M40: 24,663,752 km (0.096 R)
• M41: 24,832,947 km (0.094 R)
• M42: 25,002,591 km (0.092 R)
• M43: 25,856,197 km (0.046 R)
• M44: 26,719,376 km (0.107 R)
• M45: 27,154,407 km (0.119 R)
• M46: 27,855,423 km (0.071 R)
• M47: 28,562,422 km (0.054 R)
• M48: 29,903,866 km (0.091 R)
• M49: 31,632,171 km (0.067 R)
• M50: 31,816,026 km (0.05 R)
• M51: 32,462,140 km (0.108 R)
• M52: 33,579,785 km (0.063 R)
• M53: 33,955,126 km (0.113 R)
• M54: 35,279,815 km (0.061 R)
• M55: 36,524,919 km (0.092 R)
• M56: 36,814,390 km (0.076 R)
• M57: 38,959,624 km (0.101 R)
• M58: 39,353,964 km (0.088 R)
• M59: 39,948,017 km (0.069 R)
• M60: 40,047,350 km (0.037 R)
• M61: 40,146,683 km (0.07 R)
• M62: 40,445,280 km (0.102 R)
• M63: 40,844,557 km (0.12 R)
• M64: 41,345,560 km (0.109 R)
• M65: 42,353,700 km (0.119 R)
• M66: 42,759,111 km (0.04 R)
• M67: 43,267,893 km (0.113 R)
• M68: 43,778,470 km (0.085 R)
• M69: 44,291,142 km (0.064 R)
• M70: 48,781,472 km (0.111 R)
• M71: 48,993,751 km (0.064 R)
• M72: 51,890,415 km (0.111 R)
• M73: 52,107,182 km (0.051 R)
• M74: 52,324,249 km (0.1 R)
• M75: 53,523,575 km (0.105 R)
• M76: 55,838,004 km (0.118 R)
• M77: 55,949,005 km (0.1 R)
• M78: 56,616,661 km (0.118 R)
• M79: 60,222,119 km (0.089 R)
• M80: 63,089,910 km (0.102 R)
• M81: 64,249,593 km (0.087 R)
• M82: 65,767,413 km (0.097 R)
• M83: 66,707,486 km (0.114 R)
• M84: 66,943,102 km (0.098 R)
• M85: 68,363,085 km (0.098 R)
• M86: 68,838,507 km (0.112 R)
• M87: 69,434,505 km (0.063 R)
• M88: 73,531,991 km (0.114 R)
• M89: 75,978,664 km (0.088 R)
• M90: 77,211,949 km (0.09 R)
• M91: 78,451,816 km (0.04 R)
• M92: 78,700,597 km (0.066 R)
• M93: 81,706,318 km (0.074 R)
• M94: 81,958,540 km (0.108 R)
• M95: 83,730,826 km (0.085 R)
• M96: 84,876,895 km (0.089 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 205 - 13,295 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit