🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.3

Radius: 13.8

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.47 AU - 0.55 AU

Year: 247 Days

Day: 13 Hours

Environment

Temp: -146 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 52,437,327 km

• M1: 176,825 km (0.105 R)
• M2: 271,969 km (0.038 R)
• M3: 393,742 km (0.062 R)
• M4: 493,673 km (0.086 R)
• M5: 579,692 km (0.09 R)
• M6: 752,178 km (0.079 R)
• M7: 842,386 km (0.101 R)
• M8: 971,489 km (0.1 R)
• M9: 1,060,499 km (0.066 R)
• M10: 1,178,981 km (0.107 R)
• M11: 1,353,562 km (0.115 R)
• M12: 1,592,021 km (0.064 R)
• M13: 1,707,959 km (0.08 R)
• M14: 1,822,401 km (0.088 R)
• M15: 1,966,913 km (0.078 R)
• M16: 2,068,639 km (0.108 R)
• M17: 2,253,393 km (0.077 R)
• M18: 2,478,687 km (0.069 R)
• M19: 2,604,200 km (0.079 R)
• M20: 2,763,073 km (0.08 R)
• M21: 2,856,721 km (0.069 R)
• M22: 3,101,313 km (0.075 R)
• M23: 3,198,851 km (0.078 R)
• M24: 3,402,753 km (0.112 R)
• M25: 3,497,897 km (0.104 R)
• M26: 3,588,255 km (0.062 R)
• M27: 3,696,713 km (0.092 R)
• M28: 3,806,219 km (0.111 R)
• M29: 4,040,489 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81.5

Radius: 8.7

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.51 AU - 0.59 AU

Year: 277 Days

Day: 10.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,437,327 km

• M1: 117,734 km (0.096 R)
• M2: 172,935 km (0.079 R)
• M3: 254,316 km (0.057 R)
• M4: 318,045 km (0.073 R)
• M5: 397,182 km (0.073 R)
• M6: 468,541 km (0.061 R)
• M7: 561,740 km (0.062 R)
• M8: 630,256 km (0.109 R)
• M9: 774,468 km (0.096 R)
• M10: 843,283 km (0.117 R)
• M11: 950,545 km (0.118 R)
• M12: 1,053,019 km (0.111 R)
• M13: 1,115,402 km (0.038 R)
• M14: 1,191,547 km (0.06 R)
• M15: 1,388,418 km (0.086 R)
• M16: 1,503,010 km (0.077 R)
• M17: 1,651,411 km (0.104 R)
• M18: 1,750,295 km (0.076 R)
• M19: 1,822,252 km (0.093 R)
• M20: 1,930,411 km (0.037 R)
• M21: 2,004,761 km (0.086 R)
• M22: 2,083,150 km (0.038 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 806.5

Radius: 13.4

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.67 AU - 0.67 AU

Year: 372 Days

Day: 8.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 52,437,327 km

• M1: 168,597 km (0.118 R)
• M2: 285,882 km (0.085 R)
• M3: 441,164 km (0.101 R)
• M4: 540,198 km (0.049 R)
• M5: 682,166 km (0.047 R)
• M6: 830,418 km (0.078 R)
• M7: 999,463 km (0.095 R)
• M8: 1,088,624 km (0.033 R)
• M9: 1,373,608 km (0.108 R)
• M10: 1,463,965 km (0.05 R)
• M11: 1,572,124 km (0.057 R)
• M12: 1,672,355 km (0.053 R)
• M13: 1,802,355 km (0.076 R)
• M14: 2,072,828 km (0.064 R)
• M15: 2,195,349 km (0.112 R)
• M16: 2,314,429 km (0.088 R)
• M17: 2,441,886 km (0.104 R)
• M18: 2,553,037 km (0.113 R)
• M19: 2,653,417 km (0.049 R)
• M20: 2,858,067 km (0.037 R)
• M21: 2,968,919 km (0.114 R)
• M22: 3,242,534 km (0.114 R)
• M23: 3,365,204 km (0.107 R)
• M24: 3,489,670 km (0.103 R)
• M25: 3,757,300 km (0.106 R)
• M26: 3,872,042 km (0.069 R)
• M27: 4,053,654 km (0.063 R)
• M28: 4,193,677 km (0.101 R)
• M29: 4,531,768 km (0.085 R)
• M30: 4,615,842 km (0.094 R)
• M31: 4,707,995 km (0.064 R)
• M32: 4,902,322 km (0.1 R)
• M33: 5,075,407 km (0.115 R)
• M34: 5,226,650 km (0.067 R)
• M35: 5,615,306 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.7

Radius: 11.9

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.02 AU - 1.18 AU

Year: 782 Days

Day: 8.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 52,437,327 km

• M1: 148,102 km (0.096 R)
• M2: 226,940 km (0.074 R)
• M3: 313,856 km (0.068 R)
• M4: 489,634 km (0.083 R)
• M5: 617,091 km (0.112 R)
• M6: 721,062 km (0.087 R)
• M7: 809,175 km (0.083 R)
• M8: 969,095 km (0.071 R)
• M9: 1,063,641 km (0.086 R)
• M10: 1,178,981 km (0.077 R)
• M11: 1,253,929 km (0.103 R)
• M12: 1,395,000 km (0.119 R)
• M13: 1,517,670 km (0.084 R)
• M14: 1,658,891 km (0.083 R)
• M15: 1,738,776 km (0.073 R)
• M16: 1,814,772 km (0.095 R)
• M17: 1,923,380 km (0.036 R)
• M18: 2,098,409 km (0.114 R)
• M19: 2,245,614 km (0.09 R)
• M20: 2,351,379 km (0.084 R)
• M21: 2,602,853 km (0.062 R)
• M22: 2,773,545 km (0.065 R)
• M23: 3,027,263 km (0.076 R)
• M24: 3,138,414 km (0.109 R)
• M25: 3,213,213 km (0.097 R)
• M26: 3,364,905 km (0.053 R)
• M27: 3,480,095 km (0.075 R)
• M28: 3,557,737 km (0.113 R)
• M29: 3,662,006 km (0.098 R)
• M30: 3,740,994 km (0.106 R)
• M31: 3,887,301 km (0.089 R)
• M32: 4,015,207 km (0.11 R)
• M33: 4,171,985 km (0.034 R)
• M34: 4,289,121 km (0.05 R)
• M35: 4,547,925 km (0.117 R)
• M36: 4,640,077 km (0.067 R)
• M37: 4,993,278 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 736.9

Radius: 13.2

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.18 AU - 1.72 AU

Year: 1184 Days

Day: 5.1 Hours

Environment

Temp: -197 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 52,437,327 km

• M1: 204,949 km (0.05 R)
• M2: 335,847 km (0.109 R)
• M3: 479,461 km (0.117 R)
• M4: 561,590 km (0.073 R)
• M5: 655,837 km (0.12 R)
• M6: 795,711 km (0.109 R)
• M7: 1,086,081 km (0.099 R)
• M8: 1,177,634 km (0.069 R)
• M9: 1,272,180 km (0.075 R)
• M10: 1,369,419 km (0.056 R)
• M11: 1,452,446 km (0.117 R)
• M12: 1,546,094 km (0.086 R)
• M13: 1,676,992 km (0.113 R)
• M14: 1,775,577 km (0.12 R)
• M15: 1,876,107 km (0.069 R)
• M16: 1,969,306 km (0.055 R)
• M17: 2,170,366 km (0.046 R)
• M18: 2,318,169 km (0.12 R)
• M19: 2,500,229 km (0.114 R)
• M20: 2,760,978 km (0.117 R)
• M21: 2,932,567 km (0.071 R)
• M22: 3,152,326 km (0.074 R)
• M23: 3,354,732 km (0.091 R)
• M24: 3,480,544 km (0.106 R)
• M25: 3,666,494 km (0.111 R)
• M26: 3,808,163 km (0.036 R)
• M27: 3,963,745 km (0.113 R)
• M28: 4,231,825 km (0.075 R)
• M29: 4,798,950 km (0.042 R)
• M30: 4,980,412 km (0.111 R)
• M31: 5,230,241 km (0.088 R)
• M32: 5,430,403 km (0.096 R)
• M33: 5,619,644 km (0.113 R)
• M34: 5,838,655 km (0.081 R)
• M35: 6,116,309 km (0.086 R)
• M36: 6,270,844 km (0.096 R)
• M37: 6,441,086 km (0.101 R)
• M38: 6,526,656 km (0.074 R)
• M39: 6,655,908 km (0.108 R)
• M40: 6,800,420 km (0.06 R)
• M41: 7,270,157 km (0.043 R)
• M42: 7,389,237 km (0.075 R)
• M43: 7,478,996 km (0.106 R)
• M44: 7,644,601 km (0.062 R)
• M45: 7,856,880 km (0.094 R)
• M46: 8,303,280 km (0.12 R)
• M47: 8,773,616 km (0.081 R)
• M48: 8,916,482 km (0.078 R)
• M49: 9,140,131 km (0.098 R)
• M50: 9,381,881 km (0.035 R)
• M51: 9,479,269 km (0.099 R)
• M52: 9,593,263 km (0.108 R)
• M53: 9,789,685 km (0.114 R)
• M54: 10,086,786 km (0.086 R)
• M55: 10,203,173 km (0.051 R)
• M56: 10,571,932 km (0.083 R)
• M57: 11,013,246 km (0.062 R)
• M58: 11,116,019 km (0.109 R)
• M59: 11,599,669 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 833.7

Radius: 10.1

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.65 AU - 1.77 AU

Year: 1517 Days

Day: 11.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 52,437,327 km

• M1: 126,859 km (0.068 R)
• M2: 224,098 km (0.037 R)
• M3: 370,255 km (0.115 R)
• M4: 515,215 km (0.083 R)
• M5: 644,916 km (0.102 R)
• M6: 732,880 km (0.115 R)
• M7: 817,552 km (0.11 R)
• M8: 897,737 km (0.119 R)
• M9: 972,237 km (0.1 R)
• M10: 1,200,074 km (0.08 R)
• M11: 1,292,376 km (0.068 R)
• M12: 1,416,093 km (0.047 R)
• M13: 1,614,460 km (0.119 R)
• M14: 1,696,440 km (0.074 R)
• M15: 1,769,294 km (0.053 R)
• M16: 2,195,050 km (0.107 R)
• M17: 2,437,548 km (0.108 R)
• M18: 2,567,997 km (0.029 R)
• M19: 2,713,107 km (0.044 R)
• M20: 2,935,858 km (0.104 R)
• M21: 3,307,459 km (0.1 R)
• M22: 3,452,270 km (0.095 R)
• M23: 3,585,861 km (0.108 R)
• M24: 3,653,330 km (0.088 R)
• M25: 3,816,990 km (0.064 R)
• M26: 3,899,717 km (0.036 R)
• M27: 4,179,914 km (0.09 R)
• M28: 4,308,119 km (0.07 R)
• M29: 4,437,821 km (0.045 R)
• M30: 4,554,058 km (0.106 R)
• M31: 4,627,212 km (0.076 R)
• M32: 4,730,434 km (0.072 R)
• M33: 4,804,485 km (0.079 R)
• M34: 5,059,550 km (0.087 R)
• M35: 5,211,691 km (0.101 R)
• M36: 5,319,102 km (0.099 R)
• M37: 5,411,703 km (0.069 R)
• M38: 5,536,168 km (0.079 R)
• M39: 5,946,964 km (0.105 R)
• M40: 6,043,156 km (0.106 R)
• M41: 6,499,130 km (0.115 R)
• M42: 6,614,769 km (0.06 R)
• M43: 6,714,551 km (0.119 R)
• M44: 6,831,536 km (0.086 R)
• M45: 7,357,971 km (0.099 R)
• M46: 7,426,786 km (0.057 R)
• M47: 7,687,087 km (0.101 R)
• M48: 7,932,577 km (0.042 R)
• M49: 8,056,444 km (0.078 R)
• M50: 8,359,679 km (0.051 R)
• M51: 8,521,843 km (0.071 R)
• M52: 9,199,072 km (0.118 R)
• M53: 9,366,472 km (0.103 R)
• M54: 9,516,220 km (0.109 R)
• M55: 10,450,010 km (0.109 R)
• M56: 10,702,680 km (0.086 R)
• M57: 10,996,790 km (0.108 R)
• M58: 11,075,628 km (0.076 R)
• M59: 11,293,592 km (0.106 R)
• M60: 11,753,755 km (0.12 R)
• M61: 11,996,253 km (0.046 R)
• M62: 12,118,176 km (0.087 R)
• M63: 12,342,722 km (0.098 R)
• M64: 12,733,771 km (0.08 R)
• M65: 13,338,595 km (0.109 R)
• M66: 13,464,856 km (0.081 R)
• M67: 13,528,135 km (0.117 R)
• M68: 13,718,723 km (0.105 R)
• M69: 13,803,695 km (0.116 R)
• M70: 13,952,694 km (0.1 R)
• M71: 14,274,030 km (0.11 R)
• M72: 14,424,825 km (0.037 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.8

Radius: 14.6

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 2.72 AU - 3.12 AU

Year: 3384 Days

Day: 5.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 52,437,327 km

• M1: 182,360 km (0.099 R)
• M2: 310,116 km (0.038 R)
• M3: 572,810 km (0.049 R)
• M4: 860,786 km (0.114 R)
• M5: 1,133,952 km (0.034 R)
• M6: 1,706,014 km (0.115 R)
• M7: 1,809,835 km (0.059 R)
• M8: 1,915,750 km (0.068 R)
• M9: 2,182,334 km (0.093 R)
• M10: 2,344,947 km (0.1 R)
• M11: 2,892,924 km (0.079 R)
• M12: 3,072,441 km (0.079 R)
• M13: 3,292,948 km (0.034 R)
• M14: 3,461,695 km (0.117 R)
• M15: 3,749,671 km (0.04 R)
• M16: 3,926,196 km (0.077 R)
• M17: 4,166,002 km (0.069 R)
• M18: 4,431,388 km (0.118 R)
• M19: 4,597,591 km (0.061 R)
• M20: 4,723,553 km (0.097 R)
• M21: 4,829,318 km (0.029 R)
• M22: 5,043,543 km (0.037 R)
• M23: 5,840,600 km (0.088 R)
• M24: 5,977,333 km (0.067 R)
• M25: 6,138,150 km (0.087 R)
• M26: 6,677,002 km (0.08 R)
• M27: 6,964,230 km (0.109 R)
• M28: 7,675,268 km (0.109 R)
• M29: 8,179,264 km (0.067 R)
• M30: 8,281,439 km (0.106 R)
• M31: 8,512,717 km (0.103 R)
• M32: 8,720,060 km (0.025 R)
• M33: 8,876,838 km (0.101 R)
• M34: 9,246,046 km (0.119 R)
• M35: 9,836,509 km (0.115 R)
• M36: 10,163,679 km (0.069 R)
• M37: 10,857,065 km (0.081 R)
• M38: 11,138,758 km (0.094 R)
• M39: 11,766,920 km (0.104 R)
• M40: 12,027,370 km (0.082 R)
• M41: 12,671,837 km (0.113 R)
• M42: 12,908,950 km (0.057 R)
• M43: 13,659,482 km (0.105 R)
• M44: 13,750,587 km (0.068 R)
• M45: 13,841,842 km (0.081 R)
• M46: 13,963,764 km (0.077 R)
• M47: 14,055,468 km (0.114 R)
• M48: 14,579,060 km (0.1 R)
• M49: 15,266,014 km (0.102 R)
• M50: 15,740,538 km (0.094 R)
• M51: 16,091,495 km (0.098 R)
• M52: 16,316,341 km (0.112 R)
• M53: 16,412,981 km (0.027 R)
• M54: 16,542,084 km (0.099 R)
• M55: 17,029,474 km (0.032 R)
• M56: 17,127,610 km (0.104 R)
• M57: 17,258,658 km (0.092 R)
• M58: 18,352,368 km (0.1 R)
• M59: 18,789,343 km (0.091 R)
• M60: 19,536,734 km (0.08 R)
• M61: 19,879,762 km (0.076 R)
• M62: 20,155,471 km (0.119 R)
• M63: 20,293,998 km (0.05 R)
• M64: 20,397,969 km (0.091 R)
• M65: 20,606,508 km (0.105 R)
• M66: 20,780,790 km (0.081 R)
• M67: 20,885,658 km (0.099 R)
• M68: 21,130,849 km (0.116 R)
• M69: 21,695,132 km (0.098 R)
• M70: 22,515,078 km (0.103 R)
• M71: 23,345,047 km (0.115 R)
• M72: 23,599,662 km (0.027 R)
• M73: 23,891,827 km (0.105 R)
• M74: 24,258,641 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 368.2

Radius: 7.2

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 7.01 AU - 9.17 AU

Year: 15607 Days

Day: 15 Hours

Environment

Temp: -241 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 52,437,327 km

• M1: 149,897 km (0.102 R)
• M2: 309,069 km (0.077 R)
• M3: 403,316 km (0.06 R)
• M4: 572,661 km (0.097 R)
• M5: 622,926 km (0.085 R)
• M6: 746,493 km (0.066 R)
• M7: 897,737 km (0.098 R)
• M8: 1,386,772 km (0.105 R)
• M9: 1,456,036 km (0.114 R)
• M10: 1,574,218 km (0.118 R)
• M11: 1,646,624 km (0.055 R)
• M12: 2,078,064 km (0.045 R)
• M13: 2,600,011 km (0.114 R)
• M14: 4,154,034 km (0.112 R)
• M15: 4,736,568 km (0.102 R)
• M16: 5,454,488 km (0.088 R)
• M17: 5,639,241 km (0.112 R)
• M18: 6,282,811 km (0.087 R)
• M19: 6,830,340 km (0.106 R)
• M20: 7,556,488 km (0.08 R)
• M21: 7,803,923 km (0.119 R)
• M22: 8,180,311 km (0.086 R)
• M23: 8,777,356 km (0.081 R)
• M24: 9,037,507 km (0.113 R)
• M25: 9,212,386 km (0.111 R)
• M26: 9,521,156 km (0.06 R)
• M27: 9,878,097 km (0.052 R)
• M28: 10,148,720 km (0.088 R)
• M29: 10,559,366 km (0.05 R)
• M30: 10,743,521 km (0.112 R)
• M31: 11,918,911 km (0.1 R)
• M32: 14,185,768 km (0.042 R)
• M33: 14,747,208 km (0.042 R)
• M34: 15,108,188 km (0.046 R)
• M35: 15,211,859 km (0.112 R)
• M36: 15,315,830 km (0.096 R)
• M37: 15,786,465 km (0.11 R)
• M38: 16,102,864 km (0.106 R)
• M39: 16,368,101 km (0.111 R)
• M40: 17,010,624 km (0.092 R)
• M41: 17,989,892 km (0.052 R)
• M42: 18,209,950 km (0.094 R)
• M43: 20,746,682 km (0.087 R)
• M44: 21,909,356 km (0.105 R)
• M45: 22,616,954 km (0.077 R)
• M46: 22,973,595 km (0.046 R)
• M47: 23,511,998 km (0.119 R)
• M48: 23,572,136 km (0.11 R)
• M49: 23,752,552 km (0.093 R)
• M50: 24,540,334 km (0.099 R)
• M51: 25,645,114 km (0.085 R)
• M52: 25,707,048 km (0.094 R)
• M53: 26,640,688 km (0.097 R)
• M54: 27,585,548 km (0.09 R)
• M55: 28,798,039 km (0.083 R)
• M56: 29,249,076 km (0.079 R)
• M57: 30,027,883 km (0.079 R)
• M58: 31,142,686 km (0.118 R)
• M59: 31,539,420 km (0.07 R)
• M60: 32,873,833 km (0.117 R)
• M61: 33,480,303 km (0.065 R)
• M62: 33,750,925 km (0.056 R)
• M63: 34,022,445 km (0.109 R)
• M64: 34,090,363 km (0.116 R)
• M65: 34,841,194 km (0.118 R)
• M66: 35,253,037 km (0.11 R)
• M67: 35,459,482 km (0.093 R)
• M68: 35,942,833 km (0.033 R)
• M69: 38,392,498 km (0.052 R)
• M70: 39,959,686 km (0.11 R)
• M71: 40,031,343 km (0.071 R)
• M72: 40,246,764 km (0.115 R)
• M73: 40,462,634 km (0.1 R)
• M74: 42,130,201 km (0.116 R)
• M75: 42,935,486 km (0.066 R)
• M76: 43,524,453 km (0.118 R)
• M77: 44,116,113 km (0.113 R)
• M78: 45,382,160 km (0.095 R)
• M79: 45,456,959 km (0.066 R)
• M80: 47,493,285 km (0.037 R)
• M81: 47,873,563 km (0.087 R)
• M82: 48,254,888 km (0.077 R)
• M83: 49,559,082 km (0.118 R)
• M84: 49,636,125 km (0.077 R)
• M85: 50,022,087 km (0.082 R)
• M86: 51,341,840 km (0.078 R)
• M87: 51,575,960 km (0.081 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 496 - 20,041 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit