🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.5

Radius: 11.2

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.53 AU - 0.59 AU

Year: 289 Days

Day: 10 Hours

Environment

Temp: -142 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 25,891,205 km

• M1: 139,425 km (0.101 R)
• M2: 228,885 km (0.108 R)
• M3: 308,770 km (0.06 R)
• M4: 387,458 km (0.065 R)
• M5: 460,761 km (0.091 R)
• M6: 659,427 km (0.067 R)
• M7: 770,130 km (0.104 R)
• M8: 856,597 km (0.03 R)
• M9: 938,727 km (0.112 R)
• M10: 1,023,848 km (0.09 R)
• M11: 1,158,935 km (0.109 R)
• M12: 1,336,657 km (0.093 R)
• M13: 1,433,596 km (0.111 R)
• M14: 1,509,143 km (0.118 R)
• M15: 1,590,973 km (0.086 R)
• M16: 1,835,566 km (0.118 R)
• M17: 1,928,616 km (0.113 R)
• M18: 2,065,797 km (0.096 R)
• M19: 2,239,181 km (0.104 R)
• M20: 2,350,183 km (0.045 R)
• M21: 2,423,186 km (0.084 R)
• M22: 2,514,291 km (0.092 R)
• M23: 2,647,134 km (0.065 R)
• M24: 2,806,306 km (0.119 R)
• M25: 2,980,738 km (0.075 R)
• M26: 3,078,575 km (0.081 R)
• M27: 3,183,742 km (0.078 R)
• M28: 3,391,384 km (0.095 R)
• M29: 3,571,051 km (0.083 R)
• M30: 3,681,753 km (0.042 R)
• M31: 3,767,174 km (0.101 R)
• M32: 3,859,924 km (0.037 R)
• M33: 3,966,887 km (0.08 R)
• M34: 4,217,912 km (0.114 R)
• M35: 4,495,416 km (0.054 R)
• M36: 4,678,973 km (0.038 R)
• M37: 4,771,723 km (0.092 R)
• M38: 4,850,561 km (0.045 R)
• M39: 4,922,668 km (0.051 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.7

Radius: 11.7

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.7 AU - 0.82 AU

Year: 457 Days

Day: 9.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 25,891,205 km

• M1: 156,330 km (0.069 R)
• M2: 278,551 km (0.073 R)
• M3: 363,074 km (0.119 R)
• M4: 489,185 km (0.058 R)
• M5: 569,220 km (0.064 R)
• M6: 647,460 km (0.099 R)
• M7: 845,078 km (0.069 R)
• M8: 958,025 km (0.092 R)
• M9: 1,081,144 km (0.101 R)
• M10: 1,247,646 km (0.104 R)
• M11: 1,339,200 km (0.099 R)
• M12: 1,458,130 km (0.112 R)
• M13: 1,560,156 km (0.118 R)
• M14: 1,707,211 km (0.1 R)
• M15: 1,782,459 km (0.083 R)
• M16: 1,936,544 km (0.089 R)
• M17: 2,078,064 km (0.115 R)
• M18: 2,158,697 km (0.045 R)
• M19: 2,264,164 km (0.117 R)
• M20: 2,341,506 km (0.073 R)
• M21: 2,431,713 km (0.061 R)
• M22: 2,703,383 km (0.106 R)
• M23: 2,926,733 km (0.103 R)
• M24: 3,011,256 km (0.078 R)
• M25: 3,096,526 km (0.082 R)
• M26: 3,269,761 km (0.101 R)
• M27: 3,563,272 km (0.12 R)
• M28: 3,660,660 km (0.076 R)
• M29: 3,787,369 km (0.11 R)
• M30: 3,908,244 km (0.073 R)
• M31: 4,073,999 km (0.088 R)
• M32: 4,190,685 km (0.108 R)
• M33: 4,457,269 km (0.093 R)
• M34: 4,539,996 km (0.104 R)
• M35: 4,638,282 km (0.106 R)
• M36: 4,844,727 km (0.032 R)
• M37: 4,976,224 km (0.098 R)
• M38: 5,077,651 km (0.101 R)
• M39: 5,171,898 km (0.092 R)
• M40: 5,362,186 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221

Radius: 11.4

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.7 AU - 1.12 AU

Year: 599 Days

Day: 6 Hours

Environment

Temp: -172 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 25,891,205 km

• M1: 150,795 km (0.066 R)
• M2: 234,270 km (0.087 R)
• M3: 310,565 km (0.083 R)
• M4: 431,739 km (0.1 R)
• M5: 521,648 km (0.054 R)
• M6: 609,163 km (0.088 R)
• M7: 738,714 km (0.056 R)
• M8: 929,601 km (0.117 R)
• M9: 1,010,833 km (0.053 R)
• M10: 1,128,866 km (0.109 R)
• M11: 1,247,347 km (0.113 R)
• M12: 1,374,804 km (0.11 R)
• M13: 1,589,178 km (0.11 R)
• M14: 1,683,126 km (0.093 R)
• M15: 1,892,263 km (0.049 R)
• M16: 2,142,690 km (0.097 R)
• M17: 2,213,899 km (0.076 R)
• M18: 2,341,955 km (0.096 R)
• M19: 2,478,238 km (0.111 R)
• M20: 2,658,354 km (0.114 R)
• M21: 2,782,820 km (0.101 R)
• M22: 2,903,246 km (0.116 R)
• M23: 2,994,650 km (0.079 R)
• M24: 3,149,334 km (0.061 R)
• M25: 3,224,582 km (0.11 R)
• M26: 3,408,737 km (0.078 R)
• M27: 3,479,646 km (0.091 R)
• M28: 3,629,244 km (0.064 R)
• M29: 3,767,772 km (0.093 R)
• M30: 3,841,075 km (0.055 R)
• M31: 3,982,445 km (0.097 R)
• M32: 4,098,084 km (0.047 R)
• M33: 4,353,747 km (0.097 R)
• M34: 4,707,546 km (0.046 R)
• M35: 4,801,044 km (0.061 R)
• M36: 4,931,643 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.2

Radius: 12.3

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.04 AU - 1.32 AU

Year: 885 Days

Day: 9 Hours

Environment

Temp: -182 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 25,891,205 km

• M1: 175,478 km (0.08 R)
• M2: 254,915 km (0.116 R)
• M3: 351,854 km (0.065 R)
• M4: 529,876 km (0.041 R)
• M5: 705,653 km (0.098 R)
• M6: 1,002,605 km (0.095 R)
• M7: 1,190,350 km (0.084 R)
• M8: 1,411,905 km (0.117 R)
• M9: 1,498,971 km (0.09 R)
• M10: 1,592,619 km (0.115 R)
• M11: 1,674,599 km (0.077 R)
• M12: 1,905,129 km (0.1 R)
• M13: 2,497,387 km (0.113 R)
• M14: 2,811,692 km (0.084 R)
• M15: 2,945,582 km (0.1 R)
• M16: 3,150,382 km (0.103 R)
• M17: 3,272,154 km (0.075 R)
• M18: 3,395,423 km (0.11 R)
• M19: 3,544,273 km (0.095 R)
• M20: 3,652,731 km (0.119 R)
• M21: 3,731,868 km (0.102 R)
• M22: 3,817,738 km (0.108 R)
• M23: 4,193,228 km (0.079 R)
• M24: 4,308,269 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.9

Radius: 10.1

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.25 AU - 1.39 AU

Year: 1047 Days

Day: 8.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 25,891,205 km

• M1: 134,937 km (0.118 R)
• M2: 232,475 km (0.092 R)
• M3: 314,006 km (0.105 R)
• M4: 388,057 km (0.118 R)
• M5: 481,556 km (0.063 R)
• M6: 579,841 km (0.106 R)
• M7: 681,269 km (0.092 R)
• M8: 750,981 km (0.119 R)
• M9: 823,237 km (0.117 R)
• M10: 893,249 km (0.053 R)
• M11: 970,591 km (0.071 R)
• M12: 1,034,170 km (0.077 R)
• M13: 1,177,186 km (0.099 R)
• M14: 1,262,756 km (0.065 R)
• M15: 1,380,340 km (0.106 R)
• M16: 1,458,878 km (0.04 R)
• M17: 1,538,913 km (0.118 R)
• M18: 1,690,755 km (0.104 R)
• M19: 1,887,626 km (0.072 R)
• M20: 2,016,280 km (0.076 R)
• M21: 2,140,895 km (0.05 R)
• M22: 2,225,418 km (0.116 R)
• M23: 2,332,680 km (0.083 R)
• M24: 2,434,406 km (0.106 R)
• M25: 2,530,298 km (0.071 R)
• M26: 2,597,318 km (0.081 R)
• M27: 2,680,195 km (0.085 R)
• M28: 2,918,505 km (0.054 R)
• M29: 3,044,317 km (0.116 R)
• M30: 3,131,831 km (0.111 R)
• M31: 3,523,628 km (0.12 R)
• M32: 3,590,498 km (0.075 R)
• M33: 3,683,100 km (0.099 R)
• M34: 3,948,486 km (0.057 R)
• M35: 4,044,229 km (0.085 R)
• M36: 4,398,626 km (0.119 R)
• M37: 4,497,959 km (0.043 R)
• M38: 4,855,947 km (0.081 R)
• M39: 4,939,871 km (0.11 R)
• M40: 5,052,518 km (0.08 R)
• M41: 5,175,638 km (0.093 R)
• M42: 5,242,209 km (0.091 R)
• M43: 5,318,803 km (0.041 R)
• M44: 5,463,464 km (0.039 R)
• M45: 5,609,322 km (0.097 R)
• M46: 5,736,779 km (0.052 R)
• M47: 5,855,261 km (0.111 R)
• M48: 5,934,847 km (0.083 R)
• M49: 6,074,721 km (0.108 R)
• M50: 6,276,678 km (0.107 R)
• M51: 6,511,547 km (0.03 R)
• M52: 6,676,703 km (0.091 R)
• M53: 6,916,508 km (0.12 R)
• M54: 7,138,062 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.9

Radius: 8.1

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.61 AU - 2.65 AU

Year: 2146 Days

Day: 6.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 25,891,205 km

• M1: 121,473 km (0.081 R)
• M2: 190,737 km (0.09 R)
• M3: 266,135 km (0.099 R)
• M4: 436,826 km (0.092 R)
• M5: 613,202 km (0.082 R)
• M6: 942,467 km (0.112 R)
• M7: 1,051,374 km (0.089 R)
• M8: 1,183,918 km (0.055 R)
• M9: 1,352,365 km (0.116 R)
• M10: 1,434,344 km (0.1 R)
• M11: 1,571,376 km (0.072 R)
• M12: 1,668,764 km (0.096 R)
• M13: 1,723,816 km (0.086 R)
• M14: 1,984,865 km (0.106 R)
• M15: 2,344,348 km (0.068 R)
• M16: 2,443,681 km (0.069 R)
• M17: 2,519,228 km (0.12 R)
• M18: 2,698,297 km (0.092 R)
• M19: 2,802,567 km (0.085 R)
• M20: 2,974,754 km (0.06 R)
• M21: 3,069,000 km (0.069 R)
• M22: 3,727,231 km (0.103 R)
• M23: 3,785,275 km (0.116 R)
• M24: 4,079,983 km (0.103 R)
• M25: 4,139,822 km (0.115 R)
• M26: 4,230,179 km (0.111 R)
• M27: 4,428,097 km (0.12 R)
• M28: 4,535,957 km (0.113 R)
• M29: 4,598,040 km (0.061 R)
• M30: 4,722,954 km (0.101 R)
• M31: 4,896,488 km (0.113 R)
• M32: 5,024,095 km (0.109 R)
• M33: 5,628,620 km (0.091 R)
• M34: 6,067,091 km (0.037 R)
• M35: 6,187,069 km (0.119 R)
• M36: 6,446,771 km (0.092 R)
• M37: 6,551,639 km (0.117 R)
• M38: 6,657,105 km (0.091 R)
• M39: 6,745,368 km (0.102 R)
• M40: 6,816,427 km (0.106 R)
• M41: 7,012,699 km (0.083 R)
• M42: 8,248,827 km (0.077 R)
• M43: 8,515,410 km (0.061 R)
• M44: 8,649,898 km (0.109 R)
• M45: 8,746,389 km (0.085 R)
• M46: 8,843,179 km (0.082 R)
• M47: 9,116,195 km (0.073 R)
• M48: 9,174,987 km (0.093 R)
• M49: 9,273,422 km (0.093 R)
• M50: 9,451,444 km (0.078 R)
• M51: 9,570,673 km (0.093 R)
• M52: 9,770,536 km (0.101 R)
• M53: 9,931,503 km (0.067 R)
• M54: 10,215,291 km (0.047 R)
• M55: 10,542,910 km (0.115 R)
• M56: 10,625,338 km (0.118 R)
• M57: 10,998,884 km (0.109 R)
• M58: 11,482,684 km (0.117 R)
• M59: 11,588,749 km (0.093 R)
• M60: 11,695,113 km (0.099 R)
• M61: 11,887,496 km (0.12 R)
• M62: 12,059,384 km (0.101 R)
• M63: 12,645,358 km (0.119 R)
• M64: 12,733,023 km (0.093 R)
• M65: 12,975,072 km (0.083 R)
• M66: 13,041,344 km (0.108 R)
• M67: 14,711,305 km (0.098 R)
• M68: 14,780,419 km (0.114 R)
• M69: 14,942,135 km (0.087 R)
• M70: 15,127,636 km (0.033 R)
• M71: 15,244,023 km (0.072 R)
• M72: 15,313,885 km (0.067 R)
• M73: 15,547,856 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.3

Radius: 11.1

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 2.15 AU - 2.27 AU

Year: 2268 Days

Day: 11 Hours

Environment

Temp: -212 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 25,891,205 km

• M1: 138,677 km (0.094 R)
• M2: 241,601 km (0.108 R)
• M3: 631,901 km (0.069 R)
• M4: 703,260 km (0.116 R)
• M5: 865,124 km (0.056 R)
• M6: 945,907 km (0.032 R)
• M7: 1,029,383 km (0.105 R)
• M8: 1,137,542 km (0.094 R)
• M9: 1,377,796 km (0.104 R)
• M10: 1,498,073 km (0.046 R)
• M11: 1,571,974 km (0.091 R)
• M12: 1,659,938 km (0.113 R)
• M13: 1,880,595 km (0.097 R)
• M14: 2,293,335 km (0.11 R)
• M15: 2,780,127 km (0.091 R)
• M16: 2,933,913 km (0.079 R)
• M17: 3,027,711 km (0.07 R)
• M18: 3,106,549 km (0.097 R)
• M19: 3,186,135 km (0.116 R)
• M20: 3,298,783 km (0.099 R)
• M21: 4,158,970 km (0.056 R)
• M22: 4,264,587 km (0.08 R)
• M23: 4,388,902 km (0.059 R)
• M24: 4,659,674 km (0.044 R)
• M25: 4,861,781 km (0.109 R)
• M26: 5,698,632 km (0.099 R)
• M27: 5,895,203 km (0.093 R)
• M28: 6,274,583 km (0.112 R)
• M29: 6,559,418 km (0.09 R)
• M30: 7,226,325 km (0.116 R)
• M31: 8,090,103 km (0.11 R)
• M32: 8,467,090 km (0.118 R)
• M33: 8,849,911 km (0.087 R)
• M34: 9,585,932 km (0.109 R)
• M35: 9,843,540 km (0.107 R)
• M36: 10,055,969 km (0.082 R)
• M37: 10,969,713 km (0.049 R)
• M38: 11,214,455 km (0.033 R)
• M39: 11,288,356 km (0.089 R)
• M40: 11,461,142 km (0.111 R)
• M41: 11,759,589 km (0.091 R)
• M42: 11,909,786 km (0.072 R)
• M43: 12,161,409 km (0.045 R)
• M44: 12,338,683 km (0.091 R)
• M45: 12,875,590 km (0.112 R)
• M46: 13,004,543 km (0.032 R)
• M47: 13,133,945 km (0.118 R)
• M48: 13,315,856 km (0.052 R)
• M49: 13,446,305 km (0.078 R)
• M50: 13,655,892 km (0.095 R)
• M51: 13,972,292 km (0.113 R)
• M52: 14,397,897 km (0.086 R)
• M53: 14,746,909 km (0.117 R)
• M54: 15,153,068 km (0.073 R)
• M55: 15,261,975 km (0.112 R)
• M56: 15,343,954 km (0.1 R)
• M57: 15,645,394 km (0.1 R)
• M58: 15,865,901 km (0.092 R)
• M59: 16,142,957 km (0.079 R)
• M60: 16,477,457 km (0.064 R)
• M61: 16,729,979 km (0.068 R)
• M62: 17,210,337 km (0.103 R)
• M63: 17,953,689 km (0.09 R)
• M64: 18,416,545 km (0.095 R)
• M65: 18,795,327 km (0.071 R)
• M66: 19,147,331 km (0.086 R)
• M67: 19,324,155 km (0.098 R)
• M68: 19,471,958 km (0.09 R)
• M69: 19,887,691 km (0.085 R)
• M70: 19,977,300 km (0.054 R)
• M71: 20,066,909 km (0.066 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.3

Radius: 13.8

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 3.36 AU - 4.3 AU

Year: 5174 Days

Day: 13.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 25,891,205 km

• M1: 180,714 km (0.117 R)
• M2: 273,315 km (0.066 R)
• M3: 377,435 km (0.095 R)
• M4: 494,421 km (0.116 R)
• M5: 742,753 km (0.064 R)
• M6: 889,359 km (0.112 R)
• M7: 1,254,229 km (0.101 R)
• M8: 1,958,535 km (0.073 R)
• M9: 2,152,115 km (0.1 R)
• M10: 2,284,958 km (0.116 R)
• M11: 2,403,439 km (0.114 R)
• M12: 2,664,488 km (0.094 R)
• M13: 2,843,706 km (0.114 R)
• M14: 2,971,612 km (0.093 R)
• M15: 3,502,984 km (0.103 R)
• M16: 3,620,867 km (0.057 R)
• M17: 4,023,136 km (0.101 R)
• M18: 4,229,880 km (0.075 R)
• M19: 4,525,186 km (0.105 R)
• M20: 4,653,840 km (0.083 R)
• M21: 5,047,283 km (0.103 R)
• M22: 5,773,431 km (0.093 R)
• M23: 6,172,558 km (0.053 R)
• M24: 6,580,810 km (0.108 R)
• M25: 6,776,036 km (0.064 R)
• M26: 6,923,689 km (0.062 R)
• M27: 7,072,539 km (0.098 R)
• M28: 7,423,794 km (0.083 R)
• M29: 7,729,423 km (0.03 R)
• M30: 7,987,330 km (0.113 R)
• M31: 8,222,049 km (0.089 R)
• M32: 8,326,917 km (0.064 R)
• M33: 8,458,862 km (0.092 R)
• M34: 8,618,034 km (0.075 R)
• M35: 9,955,290 km (0.067 R)
• M36: 10,151,712 km (0.115 R)
• M37: 10,406,028 km (0.102 R)
• M38: 10,662,439 km (0.098 R)
• M39: 10,805,753 km (0.102 R)
• M40: 11,152,521 km (0.07 R)
• M41: 11,415,066 km (0.056 R)
• M42: 11,620,613 km (0.118 R)
• M43: 11,709,025 km (0.119 R)
• M44: 11,827,357 km (0.084 R)
• M45: 12,214,816 km (0.094 R)
• M46: 12,455,220 km (0.107 R)
• M47: 13,032,667 km (0.116 R)
• M48: 13,432,692 km (0.104 R)
• M49: 13,930,853 km (0.085 R)
• M50: 14,024,800 km (0.065 R)
• M51: 14,308,288 km (0.093 R)
• M52: 14,593,721 km (0.063 R)
• M53: 14,944,977 km (0.113 R)
• M54: 15,137,809 km (0.109 R)
• M55: 15,754,002 km (0.087 R)
• M56: 16,910,394 km (0.076 R)
• M57: 17,245,792 km (0.106 R)
• M58: 17,617,393 km (0.044 R)
• M59: 17,821,146 km (0.113 R)
• M60: 18,059,904 km (0.109 R)
• M61: 18,678,641 km (0.075 R)
• M62: 19,479,438 km (0.11 R)
• M63: 19,655,066 km (0.088 R)
• M64: 19,831,143 km (0.066 R)
• M65: 20,540,835 km (0.076 R)
• M66: 21,186,649 km (0.047 R)
• M67: 22,168,011 km (0.108 R)
• M68: 22,351,418 km (0.083 R)
• M69: 22,461,671 km (0.098 R)
• M70: 22,719,578 km (0.113 R)
• M71: 22,978,532 km (0.039 R)
• M72: 23,462,032 km (0.073 R)
• M73: 23,611,481 km (0.105 R)
• M74: 23,723,829 km (0.073 R)
• M75: 24,666,595 km (0.108 R)
• M76: 24,970,877 km (0.078 R)
• M77: 25,161,763 km (0.101 R)
• M78: 25,276,355 km (0.111 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 447 - 14,259 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit