🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 104.1

Radius: 13.1

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.51 AU - 0.79 AU

Year: 362 Days

Day: 9.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 78.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 50,903,979 km

• M1: 169,345 km (0.032 R)
• M2: 251,324 km (0.092 R)
• M3: 370,853 km (0.095 R)
• M4: 466,895 km (0.077 R)
• M5: 660,175 km (0.047 R)
• M6: 765,492 km (0.115 R)
• M7: 895,493 km (0.115 R)
• M8: 984,952 km (0.116 R)
• M9: 1,069,475 km (0.096 R)
• M10: 1,173,745 km (0.117 R)
• M11: 1,305,690 km (0.057 R)
• M12: 1,405,921 km (0.068 R)
• M13: 1,492,987 km (0.083 R)
• M14: 1,585,289 km (0.107 R)
• M15: 1,669,811 km (0.091 R)
• M16: 1,816,417 km (0.116 R)
• M17: 1,901,688 km (0.056 R)
• M18: 1,988,455 km (0.114 R)
• M19: 2,076,568 km (0.063 R)
• M20: 2,169,768 km (0.097 R)
• M21: 2,300,965 km (0.091 R)
• M22: 2,390,125 km (0.091 R)
• M23: 2,503,221 km (0.097 R)
• M24: 2,726,870 km (0.036 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.5

Radius: 9.8

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.66 AU - 0.76 AU

Year: 413 Days

Day: 14.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 50,903,979 km

• M1: 122,969 km (0.096 R)
• M2: 204,799 km (0.06 R)
• M3: 290,968 km (0.11 R)
• M4: 358,885 km (0.107 R)
• M5: 420,968 km (0.069 R)
• M6: 493,224 km (0.115 R)
• M7: 561,590 km (0.032 R)
• M8: 627,713 km (0.054 R)
• M9: 758,760 km (0.12 R)
• M10: 822,788 km (0.056 R)
• M11: 899,382 km (0.062 R)
• M12: 1,026,840 km (0.105 R)
• M13: 1,094,757 km (0.085 R)
• M14: 1,160,431 km (0.108 R)
• M15: 1,259,464 km (0.088 R)
• M16: 1,345,034 km (0.073 R)
• M17: 1,505,104 km (0.078 R)
• M18: 1,591,871 km (0.107 R)
• M19: 1,802,654 km (0.065 R)
• M20: 1,899,743 km (0.086 R)
• M21: 1,965,566 km (0.072 R)
• M22: 2,027,350 km (0.097 R)
• M23: 2,192,207 km (0.117 R)
• M24: 2,311,138 km (0.06 R)
• M25: 2,381,598 km (0.092 R)
• M26: 2,519,677 km (0.08 R)
• M27: 2,644,442 km (0.111 R)
• M28: 2,718,343 km (0.09 R)
• M29: 2,965,927 km (0.1 R)
• M30: 3,075,882 km (0.109 R)
• M31: 3,203,938 km (0.102 R)
• M32: 3,368,046 km (0.119 R)
• M33: 3,540,832 km (0.114 R)
• M34: 3,628,347 km (0.093 R)
• M35: 3,943,250 km (0.108 R)
• M36: 4,094,943 km (0.091 R)
• M37: 4,162,262 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 436.6

Radius: 8.8

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.77 AU - 0.93 AU

Year: 541 Days

Day: 7.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 50,903,979 km

• M1: 109,954 km (0.117 R)
• M2: 170,392 km (0.043 R)
• M3: 233,223 km (0.094 R)
• M4: 295,306 km (0.09 R)
• M5: 362,326 km (0.11 R)
• M6: 429,196 km (0.101 R)
• M7: 501,153 km (0.032 R)
• M8: 600,486 km (0.104 R)
• M9: 707,000 km (0.085 R)
• M10: 903,870 km (0.046 R)
• M11: 967,449 km (0.083 R)
• M12: 1,089,671 km (0.081 R)
• M13: 1,242,261 km (0.071 R)
• M14: 1,444,517 km (0.111 R)
• M15: 1,525,150 km (0.103 R)
• M16: 1,657,544 km (0.043 R)
• M17: 1,770,790 km (0.093 R)
• M18: 1,834,219 km (0.064 R)
• M19: 1,963,322 km (0.053 R)
• M20: 2,193,703 km (0.094 R)
• M21: 2,324,751 km (0.03 R)
• M22: 2,394,464 km (0.062 R)
• M23: 2,706,973 km (0.109 R)
• M24: 2,820,967 km (0.117 R)
• M25: 3,081,267 km (0.082 R)
• M26: 3,292,200 km (0.111 R)
• M27: 3,413,973 km (0.084 R)
• M28: 3,493,559 km (0.03 R)
• M29: 3,551,753 km (0.107 R)
• M30: 3,625,056 km (0.12 R)
• M31: 3,713,767 km (0.113 R)
• M32: 3,825,517 km (0.092 R)
• M33: 3,953,573 km (0.114 R)
• M34: 4,206,393 km (0.068 R)
• M35: 4,284,034 km (0.111 R)
• M36: 4,393,540 km (0.07 R)
• M37: 4,456,521 km (0.084 R)
• M38: 4,679,421 km (0.082 R)
• M39: 4,954,981 km (0.111 R)
• M40: 5,111,310 km (0.042 R)
• M41: 5,269,286 km (0.059 R)
• M42: 5,344,833 km (0.088 R)
• M43: 5,505,202 km (0.101 R)
• M44: 5,564,592 km (0.1 R)
• M45: 5,641,485 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 997.9

Radius: 9

Gravity: 12.32 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.95 AU - 1.07 AU

Year: 701 Days

Day: 11.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 50,903,979 km

• M1: 114,293 km (0.033 R)
• M2: 179,517 km (0.058 R)
• M3: 295,605 km (0.108 R)
• M4: 362,326 km (0.082 R)
• M5: 435,779 km (0.055 R)
• M6: 505,491 km (0.084 R)
• M7: 652,546 km (0.087 R)
• M8: 785,538 km (0.038 R)
• M9: 1,002,455 km (0.074 R)
• M10: 1,085,632 km (0.109 R)
• M11: 1,406,070 km (0.086 R)
• M12: 1,573,620 km (0.067 R)
• M13: 1,633,459 km (0.085 R)
• M14: 1,701,825 km (0.071 R)
• M15: 1,771,089 km (0.088 R)
• M16: 1,944,623 km (0.034 R)
• M17: 2,057,868 km (0.112 R)
• M18: 2,115,463 km (0.114 R)
• M19: 2,232,150 km (0.085 R)
• M20: 2,350,931 km (0.105 R)
• M21: 2,489,458 km (0.101 R)
• M22: 2,568,595 km (0.12 R)
• M23: 2,948,873 km (0.085 R)
• M24: 3,164,743 km (0.066 R)
• M25: 3,424,894 km (0.105 R)
• M26: 3,732,018 km (0.12 R)
• M27: 3,955,517 km (0.098 R)
• M28: 4,027,474 km (0.1 R)
• M29: 4,120,823 km (0.073 R)
• M30: 4,309,466 km (0.112 R)
• M31: 4,760,952 km (0.03 R)
• M32: 4,914,888 km (0.046 R)
• M33: 5,092,760 km (0.082 R)
• M34: 5,318,055 km (0.095 R)
• M35: 5,386,271 km (0.033 R)
• M36: 5,489,195 km (0.116 R)
• M37: 5,546,640 km (0.108 R)
• M38: 5,639,092 km (0.105 R)
• M39: 5,743,661 km (0.12 R)
• M40: 5,802,004 km (0.094 R)
• M41: 5,966,412 km (0.094 R)
• M42: 6,061,107 km (0.116 R)
• M43: 6,120,498 km (0.107 R)
• M44: 6,275,930 km (0.119 R)
• M45: 6,420,591 km (0.099 R)
• M46: 6,493,445 km (0.048 R)
• M47: 6,824,206 km (0.111 R)
• M48: 6,972,906 km (0.045 R)
• M49: 7,273,748 km (0.108 R)
• M50: 7,720,148 km (0.026 R)
• M51: 7,784,624 km (0.112 R)
• M52: 7,875,281 km (0.093 R)
• M53: 8,070,506 km (0.097 R)
• M54: 8,162,209 km (0.059 R)
• M55: 8,267,526 km (0.075 R)
• M56: 8,466,043 km (0.09 R)
• M57: 8,545,928 km (0.093 R)
• M58: 8,679,519 km (0.038 R)
• M59: 8,760,003 km (0.055 R)
• M60: 8,867,863 km (0.068 R)
• M61: 9,003,099 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.3

Radius: 8.7

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.51 AU - 1.65 AU

Year: 1371 Days

Day: 8 Hours

Environment

Temp: -188 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 50,903,979 km

• M1: 112,797 km (0.111 R)
• M2: 224,995 km (0.051 R)
• M3: 306,376 km (0.092 R)
• M4: 365,168 km (0.091 R)
• M5: 494,571 km (0.076 R)
• M6: 556,354 km (0.027 R)
• M7: 771,027 km (0.094 R)
• M8: 1,018,612 km (0.091 R)
• M9: 1,082,789 km (0.053 R)
• M10: 1,169,407 km (0.116 R)
• M11: 1,254,827 km (0.114 R)
• M12: 1,331,421 km (0.097 R)
• M13: 1,439,880 km (0.108 R)
• M14: 1,527,993 km (0.068 R)
• M15: 1,811,630 km (0.113 R)
• M16: 2,047,097 km (0.052 R)
• M17: 2,194,900 km (0.095 R)
• M18: 2,306,051 km (0.097 R)
• M19: 2,414,360 km (0.087 R)
• M20: 2,496,788 km (0.066 R)
• M21: 2,631,576 km (0.119 R)
• M22: 2,735,397 km (0.046 R)
• M23: 2,850,438 km (0.102 R)
• M24: 3,020,830 km (0.085 R)
• M25: 3,119,864 km (0.111 R)
• M26: 3,239,991 km (0.079 R)
• M27: 3,346,504 km (0.113 R)
• M28: 3,464,387 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 363.7

Radius: 12.5

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 2.83 AU - 4.01 AU

Year: 4366 Days

Day: 13.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 50,903,979 km

• M1: 188,344 km (0.035 R)
• M2: 282,441 km (0.1 R)
• M3: 433,834 km (0.099 R)
• M4: 522,994 km (0.06 R)
• M5: 620,233 km (0.093 R)
• M6: 804,986 km (0.047 R)
• M7: 975,677 km (0.055 R)
• M8: 1,077,553 km (0.083 R)
• M9: 1,329,775 km (0.095 R)
• M10: 1,522,158 km (0.119 R)
• M11: 1,601,744 km (0.097 R)
• M12: 1,751,492 km (0.108 R)
• M13: 1,906,176 km (0.044 R)
• M14: 1,992,494 km (0.1 R)
• M15: 2,154,359 km (0.067 R)
• M16: 2,459,987 km (0.115 R)
• M17: 2,666,283 km (0.106 R)
• M18: 2,861,807 km (0.087 R)
• M19: 3,028,459 km (0.107 R)
• M20: 3,198,552 km (0.108 R)
• M21: 3,441,798 km (0.034 R)
• M22: 3,763,882 km (0.062 R)
• M23: 4,002,491 km (0.119 R)
• M24: 4,189,488 km (0.039 R)
• M25: 4,630,802 km (0.045 R)
• M26: 4,748,386 km (0.056 R)
• M27: 5,066,880 km (0.117 R)
• M28: 5,167,858 km (0.088 R)
• M29: 5,454,189 km (0.069 R)
• M30: 5,745,905 km (0.057 R)
• M31: 5,936,044 km (0.099 R)
• M32: 6,106,884 km (0.103 R)
• M33: 6,453,503 km (0.072 R)
• M34: 6,918,303 km (0.093 R)
• M35: 8,092,048 km (0.119 R)
• M36: 8,329,310 km (0.066 R)
• M37: 8,448,989 km (0.113 R)
• M38: 8,689,692 km (0.106 R)
• M39: 8,786,781 km (0.106 R)
• M40: 8,981,856 km (0.09 R)
• M41: 9,178,278 km (0.114 R)
• M42: 9,450,845 km (0.106 R)
• M43: 9,625,725 km (0.115 R)
• M44: 10,105,635 km (0.116 R)
• M45: 10,438,640 km (0.051 R)
• M46: 10,541,713 km (0.1 R)
• M47: 10,671,265 km (0.092 R)
• M48: 11,115,271 km (0.104 R)
• M49: 11,247,067 km (0.112 R)
• M50: 11,752,558 km (0.114 R)
• M51: 12,048,762 km (0.043 R)
• M52: 12,129,844 km (0.107 R)
• M53: 12,347,210 km (0.067 R)
• M54: 13,146,062 km (0.113 R)
• M55: 13,229,688 km (0.117 R)
• M56: 14,018,517 km (0.116 R)
• M57: 14,361,396 km (0.102 R)
• M58: 14,649,072 km (0.064 R)
• M59: 14,851,628 km (0.088 R)
• M60: 14,938,694 km (0.096 R)
• M61: 16,415,524 km (0.03 R)
• M62: 16,565,720 km (0.089 R)
• M63: 16,988,783 km (0.091 R)
• M64: 17,262,697 km (0.118 R)
• M65: 17,446,104 km (0.098 R)
• M66: 18,000,214 km (0.07 R)
• M67: 18,217,131 km (0.105 R)
• M68: 18,341,597 km (0.08 R)
• M69: 18,560,009 km (0.114 R)
• M70: 18,653,957 km (0.099 R)
• M71: 18,936,547 km (0.097 R)
• M72: 19,537,632 km (0.111 R)
• M73: 19,824,710 km (0.116 R)
• M74: 20,113,135 km (0.116 R)
• M75: 20,241,639 km (0.066 R)
• M76: 20,532,158 km (0.096 R)
• M77: 21,084,473 km (0.108 R)
• M78: 21,707,549 km (0.085 R)
• M79: 22,004,800 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 91.3

Radius: 13.2

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.56 AU - 5.38 AU

Year: 6523 Days

Day: 11.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 50,903,979 km

• M1: 177,273 km (0.058 R)
• M2: 315,652 km (0.031 R)
• M3: 473,627 km (0.119 R)
• M4: 561,740 km (0.094 R)
• M5: 857,495 km (0.067 R)
• M6: 990,188 km (0.09 R)
• M7: 1,278,015 km (0.115 R)
• M8: 1,534,874 km (0.091 R)
• M9: 1,640,191 km (0.083 R)
• M10: 1,784,403 km (0.064 R)
• M11: 2,009,249 km (0.083 R)
• M12: 2,432,013 km (0.107 R)
• M13: 2,556,029 km (0.076 R)
• M14: 2,999,886 km (0.047 R)
• M15: 3,163,397 km (0.115 R)
• M16: 3,314,490 km (0.099 R)
• M17: 4,106,611 km (0.054 R)
• M18: 4,389,202 km (0.095 R)
• M19: 4,609,559 km (0.092 R)
• M20: 4,695,428 km (0.102 R)
• M21: 4,868,513 km (0.105 R)
• M22: 5,274,971 km (0.047 R)
• M23: 6,139,497 km (0.114 R)
• M24: 6,329,187 km (0.093 R)
• M25: 6,424,780 km (0.025 R)
• M26: 6,851,134 km (0.061 R)
• M27: 7,772,208 km (0.113 R)
• M28: 7,936,317 km (0.117 R)
• M29: 8,060,333 km (0.105 R)
• M30: 8,330,956 km (0.106 R)
• M31: 8,625,963 km (0.036 R)
• M32: 8,881,476 km (0.058 R)
• M33: 9,096,299 km (0.091 R)
• M34: 9,247,841 km (0.088 R)
• M35: 9,378,291 km (0.094 R)
• M36: 9,531,329 km (0.088 R)
• M37: 9,773,378 km (0.118 R)
• M38: 11,548,357 km (0.105 R)
• M39: 12,786,280 km (0.038 R)
• M40: 13,298,054 km (0.115 R)
• M41: 13,396,340 km (0.055 R)
• M42: 14,670,315 km (0.099 R)
• M43: 15,489,364 km (0.108 R)
• M44: 15,722,437 km (0.094 R)
• M45: 15,826,258 km (0.047 R)
• M46: 16,349,551 km (0.057 R)
• M47: 16,666,250 km (0.094 R)
• M48: 17,011,522 km (0.083 R)
• M49: 17,144,963 km (0.038 R)
• M50: 17,763,401 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 666.2

Radius: 7.1

Gravity: 13.22 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 5.8 AU - 6.94 AU

Year: 11097 Days

Day: 18.6 Hours

Environment

Temp: -237 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 50,903,979 km

• M1: 352,303 km (0.089 R)
• M2: 479,611 km (0.084 R)
• M3: 541,395 km (0.036 R)
• M4: 1,281,455 km (0.1 R)
• M5: 1,347,578 km (0.119 R)
• M6: 2,148,076 km (0.103 R)
• M7: 2,361,103 km (0.118 R)
• M8: 2,721,784 km (0.045 R)
• M9: 3,040,427 km (0.103 R)
• M10: 3,310,002 km (0.115 R)
• M11: 4,363,471 km (0.096 R)
• M12: 4,770,377 km (0.111 R)
• M13: 4,839,491 km (0.082 R)
• M14: 5,260,609 km (0.073 R)
• M15: 5,475,581 km (0.104 R)
• M16: 5,730,047 km (0.094 R)
• M17: 6,288,496 km (0.114 R)
• M18: 7,138,511 km (0.08 R)
• M19: 7,257,142 km (0.097 R)
• M20: 7,617,224 km (0.112 R)
• M21: 8,230,276 km (0.106 R)
• M22: 8,396,480 km (0.114 R)
• M23: 8,689,841 km (0.092 R)
• M24: 8,859,186 km (0.112 R)
• M25: 8,944,157 km (0.054 R)
• M26: 9,072,213 km (0.109 R)
• M27: 9,243,802 km (0.058 R)
• M28: 9,373,354 km (0.083 R)
• M29: 10,296,223 km (0.099 R)
• M30: 10,565,200 km (0.113 R)
• M31: 10,791,242 km (0.118 R)
• M32: 11,018,781 km (0.117 R)
• M33: 12,274,804 km (0.071 R)
• M34: 12,322,227 km (0.117 R)
• M35: 14,018,816 km (0.114 R)
• M36: 14,068,333 km (0.086 R)
• M37: 14,316,965 km (0.082 R)
• M38: 15,325,853 km (0.119 R)
• M39: 15,735,751 km (0.12 R)
• M40: 16,149,389 km (0.074 R)
• M41: 16,409,690 km (0.098 R)
• M42: 16,566,468 km (0.062 R)
• M43: 16,723,845 km (0.064 R)
• M44: 17,251,926 km (0.083 R)
• M45: 17,678,429 km (0.089 R)
• M46: 17,839,247 km (0.032 R)
• M47: 18,650,516 km (0.104 R)
• M48: 18,814,176 km (0.117 R)
• M49: 19,253,096 km (0.077 R)
• M50: 19,418,552 km (0.053 R)
• M51: 19,806,459 km (0.085 R)
• M52: 20,364,908 km (0.103 R)
• M53: 21,554,809 km (0.095 R)
• M54: 22,013,925 km (0.115 R)
• M55: 22,302,499 km (0.105 R)
• M56: 22,360,394 km (0.059 R)
• M57: 22,941,881 km (0.063 R)
• M58: 23,646,337 km (0.038 R)
• M59: 23,764,370 km (0.083 R)
• M60: 24,060,424 km (0.067 R)
• M61: 25,862,330 km (0.025 R)
• M62: 26,289,133 km (0.117 R)
• M63: 26,472,690 km (0.052 R)
• M64: 26,718,030 km (0.094 R)
• M65: 29,403,761 km (0.106 R)
• M66: 31,133,710 km (0.118 R)
• M67: 32,370,586 km (0.087 R)
• M68: 32,698,803 km (0.089 R)
• M69: 33,889,303 km (0.101 R)
• M70: 34,623,829 km (0.104 R)
• M71: 35,701,681 km (0.086 R)
• M72: 36,040,820 km (0.03 R)
• M73: 37,545,326 km (0.055 R)
• M74: 38,513,373 km (0.114 R)
• M75: 38,930,751 km (0.08 R)
• M76: 39,209,901 km (0.095 R)
• M77: 40,192,011 km (0.086 R)
• M78: 41,324,317 km (0.053 R)
• M79: 42,610,710 km (0.052 R)
• M80: 42,754,323 km (0.105 R)
• M81: 42,826,280 km (0.114 R)
• M82: 43,042,299 km (0.113 R)
• M83: 43,620,196 km (0.049 R)
• M84: 44,929,776 km (0.109 R)
• M85: 46,252,071 km (0.067 R)
• M86: 46,621,728 km (0.026 R)
• M87: 46,695,779 km (0.115 R)
• M88: 46,992,282 km (0.118 R)
• M89: 49,085,605 km (0.088 R)
• M90: 50,067,864 km (0.076 R)
• M91: 50,903,967 km (0.092 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 513 - 18,425 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit