🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.57 AU - 0.73 AU

Year: 338 Days

Day: 32 Hours

Environment

Temp: -128 °C

Axial Tilt: 2.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696

Radius: 10.6

Gravity: 6.19 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.59 AU - 0.89 AU

Year: 411 Days

Day: 12.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 65,871,824 km

• M1: 150,047 km (0.077 R)
• M2: 237,861 km (0.106 R)
• M3: 344,823 km (0.088 R)
• M4: 454,329 km (0.116 R)
• M5: 552,914 km (0.058 R)
• M6: 656,136 km (0.062 R)
• M7: 746,344 km (0.119 R)
• M8: 816,056 km (0.095 R)
• M9: 888,163 km (0.115 R)
• M10: 1,003,054 km (0.066 R)
• M11: 1,170,753 km (0.073 R)
• M12: 1,263,204 km (0.071 R)
• M13: 1,492,239 km (0.03 R)
• M14: 1,625,530 km (0.118 R)
• M15: 1,779,616 km (0.108 R)
• M16: 1,875,509 km (0.072 R)
• M17: 1,961,677 km (0.084 R)
• M18: 2,108,432 km (0.107 R)
• M19: 2,222,276 km (0.065 R)
• M20: 2,307,697 km (0.083 R)
• M21: 2,475,396 km (0.052 R)
• M22: 2,621,553 km (0.073 R)
• M23: 2,718,343 km (0.057 R)
• M24: 2,796,732 km (0.092 R)
• M25: 2,915,812 km (0.08 R)
• M26: 3,050,001 km (0.043 R)
• M27: 3,331,694 km (0.108 R)
• M28: 3,472,316 km (0.049 R)
• M29: 3,550,406 km (0.11 R)
• M30: 3,905,851 km (0.082 R)
• M31: 3,972,272 km (0.119 R)
• M32: 4,069,062 km (0.08 R)
• M33: 4,204,448 km (0.102 R)
• M34: 4,356,589 km (0.117 R)
• M35: 4,433,333 km (0.061 R)
• M36: 4,572,758 km (0.108 R)
• M37: 4,650,699 km (0.101 R)
• M38: 4,808,225 km (0.111 R)
• M39: 4,959,469 km (0.112 R)
• M40: 5,112,208 km (0.111 R)
• M41: 5,242,209 km (0.075 R)
• M42: 5,422,624 km (0.063 R)
• M43: 5,563,395 km (0.094 R)
• M44: 5,646,871 km (0.113 R)
• M45: 5,730,795 km (0.081 R)

Asteroid Belt

Center: 1.01 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.8

Radius: 9

Gravity: 8.7 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.07 AU - 1.47 AU

Year: 924 Days

Day: 14.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 65,871,824 km

• M1: 146,008 km (0.093 R)
• M2: 202,256 km (0.113 R)
• M3: 266,583 km (0.096 R)
• M4: 362,924 km (0.106 R)
• M5: 468,690 km (0.089 R)
• M6: 565,031 km (0.096 R)
• M7: 629,657 km (0.112 R)
• M8: 685,757 km (0.089 R)
• M9: 921,822 km (0.089 R)
• M10: 1,059,751 km (0.108 R)
• M11: 1,141,731 km (0.099 R)
• M12: 1,334,263 km (0.099 R)
• M13: 1,430,904 km (0.118 R)
• M14: 1,499,120 km (0.101 R)
• M15: 1,599,800 km (0.071 R)
• M16: 1,799,812 km (0.055 R)
• M17: 1,882,091 km (0.06 R)
• M18: 1,982,621 km (0.093 R)
• M19: 2,059,215 km (0.1 R)
• M20: 2,189,066 km (0.091 R)
• M21: 2,277,179 km (0.116 R)
• M22: 2,339,711 km (0.097 R)
• M23: 2,651,024 km (0.052 R)
• M24: 2,811,842 km (0.102 R)
• M25: 2,985,525 km (0.075 R)
• M26: 3,054,041 km (0.047 R)
• M27: 3,272,902 km (0.105 R)
• M28: 3,486,678 km (0.057 R)
• M29: 3,810,557 km (0.032 R)
• M30: 3,938,613 km (0.117 R)
• M31: 4,253,965 km (0.109 R)
• M32: 4,353,448 km (0.104 R)
• M33: 4,465,048 km (0.088 R)
• M34: 4,611,504 km (0.066 R)
• M35: 4,713,679 km (0.062 R)
• M36: 5,001,954 km (0.079 R)
• M37: 5,095,303 km (0.12 R)
• M38: 5,165,764 km (0.109 R)
• M39: 5,248,492 km (0.039 R)
• M40: 5,307,732 km (0.065 R)
• M41: 5,462,865 km (0.12 R)
• M42: 5,704,616 km (0.113 R)
• M43: 5,949,956 km (0.091 R)
• M44: 6,223,720 km (0.036 R)
• M45: 6,514,538 km (0.085 R)
• M46: 6,655,160 km (0.116 R)
• M47: 6,822,560 km (0.083 R)
• M48: 7,096,175 km (0.042 R)
• M49: 7,188,178 km (0.114 R)
• M50: 7,320,273 km (0.041 R)
• M51: 7,439,801 km (0.039 R)
• M52: 7,802,427 km (0.025 R)
• M53: 7,911,035 km (0.08 R)
• M54: 7,992,715 km (0.058 R)
• M55: 8,391,992 km (0.107 R)
• M56: 8,685,054 km (0.076 R)
• M57: 8,882,374 km (0.11 R)
• M58: 9,095,401 km (0.093 R)
• M59: 9,410,903 km (0.093 R)
• M60: 9,570,075 km (0.102 R)
• M61: 9,861,641 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 658.6

Radius: 12.3

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.37 AU - 2.07 AU

Year: 1456 Days

Day: 14.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 65,871,824 km

• M1: 179,218 km (0.095 R)
• M2: 293,361 km (0.12 R)
• M3: 382,522 km (0.084 R)
• M4: 531,970 km (0.078 R)
• M5: 618,737 km (0.118 R)
• M6: 1,020,407 km (0.073 R)
• M7: 1,224,907 km (0.119 R)
• M8: 1,443,320 km (0.119 R)
• M9: 1,938,639 km (0.053 R)
• M10: 2,029,744 km (0.067 R)
• M11: 2,132,667 km (0.092 R)
• M12: 2,269,101 km (0.115 R)
• M13: 2,386,984 km (0.104 R)
• M14: 2,474,050 km (0.109 R)
• M15: 2,595,523 km (0.095 R)
• M16: 2,913,867 km (0.086 R)
• M17: 3,054,190 km (0.106 R)
• M18: 3,208,874 km (0.07 R)
• M19: 3,538,588 km (0.074 R)
• M20: 3,701,201 km (0.057 R)
• M21: 3,943,549 km (0.078 R)
• M22: 4,125,460 km (0.068 R)
• M23: 4,204,299 km (0.097 R)
• M24: 4,390,249 km (0.068 R)
• M25: 4,511,273 km (0.09 R)
• M26: 4,992,380 km (0.074 R)
• M27: 5,246,397 km (0.071 R)
• M28: 5,620,691 km (0.113 R)
• M29: 5,855,410 km (0.119 R)
• M30: 6,078,461 km (0.032 R)
• M31: 6,168,519 km (0.11 R)
• M32: 6,258,876 km (0.119 R)
• M33: 6,502,421 km (0.1 R)
• M34: 6,888,982 km (0.027 R)
• M35: 7,061,468 km (0.11 R)
• M36: 7,172,021 km (0.049 R)
• M37: 7,587,604 km (0.118 R)
• M38: 7,912,830 km (0.081 R)
• M39: 8,126,605 km (0.084 R)
• M40: 8,627,309 km (0.094 R)
• M41: 8,779,450 km (0.067 R)
• M42: 9,086,425 km (0.113 R)
• M43: 9,414,493 km (0.118 R)
• M44: 9,693,643 km (0.11 R)
• M45: 9,816,762 km (0.032 R)
• M46: 10,064,346 km (0.115 R)
• M47: 10,206,764 km (0.113 R)
• M48: 10,385,832 km (0.102 R)
• M49: 10,493,692 km (0.119 R)
• M50: 10,674,406 km (0.112 R)
• M51: 10,837,917 km (0.108 R)
• M52: 10,947,273 km (0.091 R)
• M53: 11,057,227 km (0.101 R)
• M54: 11,259,484 km (0.088 R)
• M55: 11,967,830 km (0.096 R)
• M56: 12,346,611 km (0.051 R)
• M57: 12,441,905 km (0.099 R)
• M58: 12,594,794 km (0.044 R)
• M59: 12,902,667 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 641.1

Radius: 11.3

Gravity: 5.02 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 2.52 AU - 3.62 AU

Year: 3473 Days

Day: 5.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 65,871,824 km

• M1: 148,700 km (0.051 R)
• M2: 220,806 km (0.1 R)
• M3: 297,849 km (0.114 R)
• M4: 397,930 km (0.059 R)
• M5: 522,097 km (0.08 R)
• M6: 868,715 km (0.113 R)
• M7: 957,726 km (0.062 R)
• M8: 1,038,508 km (0.095 R)
• M9: 1,121,685 km (0.113 R)
• M10: 1,532,032 km (0.108 R)
• M11: 1,726,060 km (0.07 R)
• M12: 1,811,780 km (0.109 R)
• M13: 2,138,502 km (0.091 R)
• M14: 2,309,043 km (0.099 R)
• M15: 2,436,052 km (0.084 R)
• M16: 2,949,920 km (0.085 R)
• M17: 3,406,942 km (0.114 R)
• M18: 3,588,703 km (0.079 R)
• M19: 3,811,155 km (0.085 R)
• M20: 3,980,949 km (0.103 R)
• M21: 4,153,286 km (0.044 R)
• M22: 4,308,718 km (0.101 R)
• M23: 4,525,485 km (0.062 R)
• M24: 4,766,039 km (0.088 R)
• M25: 5,197,329 km (0.079 R)
• M26: 5,512,981 km (0.085 R)
• M27: 5,921,981 km (0.116 R)
• M28: 6,229,704 km (0.102 R)
• M29: 6,701,237 km (0.104 R)
• M30: 7,021,974 km (0.086 R)
• M31: 7,230,813 km (0.083 R)
• M32: 7,465,383 km (0.098 R)
• M33: 8,874,594 km (0.068 R)
• M34: 9,024,940 km (0.091 R)
• M35: 9,661,030 km (0.096 R)
• M36: 10,101,746 km (0.102 R)
• M37: 10,628,779 km (0.1 R)
• M38: 10,922,440 km (0.075 R)
• M39: 11,002,923 km (0.089 R)
• M40: 11,272,948 km (0.072 R)
• M41: 11,709,474 km (0.057 R)
• M42: 11,874,630 km (0.084 R)
• M43: 12,262,986 km (0.068 R)
• M44: 12,796,751 km (0.078 R)
• M45: 13,166,258 km (0.082 R)
• M46: 13,539,355 km (0.114 R)
• M47: 13,886,871 km (0.088 R)
• M48: 14,531,638 km (0.058 R)
• M49: 14,887,382 km (0.032 R)
• M50: 15,066,450 km (0.083 R)
• M51: 15,972,116 km (0.115 R)
• M52: 16,247,226 km (0.108 R)
• M53: 16,431,531 km (0.095 R)
• M54: 16,523,982 km (0.108 R)
• M55: 16,740,301 km (0.116 R)
• M56: 16,988,633 km (0.113 R)
• M57: 17,394,941 km (0.1 R)
• M58: 17,489,038 km (0.106 R)
• M59: 17,772,676 km (0.089 R)
• M60: 17,899,236 km (0.115 R)
• M61: 18,057,809 km (0.08 R)
• M62: 18,440,481 km (0.054 R)
• M63: 18,568,537 km (0.084 R)
• M64: 18,761,368 km (0.103 R)
• M65: 18,857,859 km (0.096 R)
• M66: 20,227,876 km (0.099 R)
• M67: 20,327,059 km (0.115 R)
• M68: 20,891,642 km (0.039 R)
• M69: 21,159,123 km (0.113 R)
• M70: 21,427,651 km (0.091 R)
• M71: 21,596,098 km (0.101 R)
• M72: 21,866,571 km (0.108 R)
• M73: 21,968,298 km (0.09 R)
• M74: 22,172,200 km (0.05 R)
• M75: 22,376,700 km (0.076 R)
• M76: 22,753,238 km (0.034 R)
• M77: 23,132,020 km (0.062 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 121.7

Radius: 7.1

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 8.29 AU - 8.99 AU

Year: 16398 Days

Day: 23.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 65,871,824 km

• M1: 94,396 km (0.067 R)
• M2: 156,928 km (0.115 R)
• M3: 302,337 km (0.105 R)
• M4: 354,397 km (0.067 R)
• M5: 457,171 km (0.066 R)
• M6: 557,402 km (0.1 R)
• M7: 950,096 km (0.102 R)
• M8: 1,031,029 km (0.119 R)
• M9: 1,097,600 km (0.097 R)
• M10: 1,217,577 km (0.086 R)
• M11: 1,901,539 km (0.038 R)
• M12: 2,131,022 km (0.041 R)
• M13: 3,135,571 km (0.111 R)
• M14: 3,257,942 km (0.093 R)
• M15: 3,608,899 km (0.065 R)
• M16: 3,660,062 km (0.112 R)
• M17: 3,919,464 km (0.082 R)
• M18: 4,211,778 km (0.042 R)
• M19: 4,677,177 km (0.07 R)
• M20: 4,761,102 km (0.114 R)
• M21: 4,902,023 km (0.118 R)
• M22: 6,047,494 km (0.079 R)
• M23: 6,855,173 km (0.101 R)
• M24: 7,207,177 km (0.08 R)
• M25: 7,369,042 km (0.106 R)
• M26: 7,762,484 km (0.081 R)
• M27: 7,928,538 km (0.087 R)
• M28: 8,095,638 km (0.029 R)
• M29: 8,741,452 km (0.069 R)
• M30: 9,018,358 km (0.086 R)
• M31: 10,010,042 km (0.085 R)
• M32: 10,665,730 km (0.077 R)
• M33: 10,776,432 km (0.113 R)
• M34: 11,147,884 km (0.07 R)
• M35: 11,372,879 km (0.12 R)
• M36: 11,713,064 km (0.072 R)
• M37: 11,941,800 km (0.109 R)
• M38: 12,210,477 km (0.068 R)
• M39: 13,543,544 km (0.038 R)
• M40: 13,944,317 km (0.056 R)
• M41: 14,146,274 km (0.116 R)
• M42: 14,267,897 km (0.115 R)
• M43: 14,675,701 km (0.118 R)
• M44: 14,922,238 km (0.113 R)
• M45: 15,544,565 km (0.093 R)
• M46: 16,771,716 km (0.116 R)
• M47: 16,943,455 km (0.096 R)
• M48: 17,461,961 km (0.102 R)
• M49: 17,985,853 km (0.117 R)
• M50: 18,914,856 km (0.066 R)
• M51: 19,362,752 km (0.103 R)
• M52: 19,497,838 km (0.077 R)
• M53: 19,542,867 km (0.097 R)
• M54: 20,589,454 km (0.043 R)
• M55: 20,773,310 km (0.102 R)
• M56: 21,003,990 km (0.105 R)
• M57: 21,328,168 km (0.088 R)
• M58: 21,374,693 km (0.051 R)
• M59: 21,654,142 km (0.097 R)
• M60: 22,499,819 km (0.089 R)
• M61: 22,689,210 km (0.065 R)
• M62: 23,260,524 km (0.07 R)
• M63: 23,404,138 km (0.089 R)
• M64: 24,078,076 km (0.087 R)
• M65: 24,514,603 km (0.054 R)
• M66: 25,297,299 km (0.067 R)
• M67: 25,840,190 km (0.11 R)
• M68: 25,988,890 km (0.116 R)
• M69: 26,237,372 km (0.083 R)
• M70: 27,542,165 km (0.085 R)
• M71: 28,049,601 km (0.072 R)
• M72: 29,125,209 km (0.039 R)
• M73: 29,228,432 km (0.041 R)
• M74: 29,280,043 km (0.085 R)
• M75: 29,538,548 km (0.06 R)
• M76: 30,947,910 km (0.085 R)
• M77: 31,053,077 km (0.035 R)
• M78: 31,211,202 km (0.106 R)
• M79: 31,422,434 km (0.082 R)
• M80: 34,866,327 km (0.111 R)
• M81: 35,195,293 km (0.119 R)
• M82: 35,360,150 km (0.107 R)
• M83: 35,856,366 km (0.061 R)
• M84: 35,911,567 km (0.032 R)
• M85: 36,132,972 km (0.097 R)
• M86: 36,188,323 km (0.117 R)
• M87: 36,465,827 km (0.041 R)
• M88: 37,134,679 km (0.087 R)
• M89: 37,414,577 km (0.034 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 380.2

Radius: 7.6

Gravity: 6.58 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 8.18 AU - 12.6 AU

Year: 21624 Days

Day: 21.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 65,871,824 km

• M1: 100,380 km (0.118 R)
• M2: 874,549 km (0.057 R)
• M3: 1,500,018 km (0.051 R)
• M4: 1,667,418 km (0.115 R)
• M5: 2,693,210 km (0.084 R)
• M6: 3,142,154 km (0.113 R)
• M7: 3,249,116 km (0.116 R)
• M8: 3,651,534 km (0.105 R)
• M9: 4,304,230 km (0.051 R)
• M10: 5,671,704 km (0.045 R)
• M11: 7,540,181 km (0.112 R)
• M12: 7,779,987 km (0.073 R)
• M13: 8,218,159 km (0.1 R)
• M14: 8,714,525 km (0.094 R)
• M15: 9,840,249 km (0.045 R)
• M16: 10,741,127 km (0.076 R)
• M17: 11,283,270 km (0.069 R)
• M18: 11,502,730 km (0.079 R)
• M19: 12,394,333 km (0.117 R)
• M20: 12,507,280 km (0.077 R)
• M21: 12,563,977 km (0.077 R)
• M22: 13,077,547 km (0.118 R)
• M23: 13,134,992 km (0.116 R)
• M24: 13,307,927 km (0.108 R)
• M25: 14,066,239 km (0.032 R)
• M26: 14,125,181 km (0.097 R)
• M27: 14,718,785 km (0.06 R)
• M28: 15,199,592 km (0.119 R)
• M29: 16,238,250 km (0.064 R)
• M30: 16,485,985 km (0.101 R)
• M31: 16,859,979 km (0.079 R)
• M32: 18,062,447 km (0.076 R)
• M33: 18,447,961 km (0.092 R)
• M34: 18,512,437 km (0.069 R)
• M35: 19,357,964 km (0.112 R)
• M36: 19,423,488 km (0.053 R)
• M37: 20,549,362 km (0.065 R)
• M38: 20,817,292 km (0.097 R)
• M39: 21,221,356 km (0.117 R)
• M40: 21,492,277 km (0.066 R)
• M41: 22,725,263 km (0.052 R)
• M42: 23,280,570 km (0.11 R)
• M43: 23,350,283 km (0.106 R)
• M44: 23,840,365 km (0.111 R)
• M45: 23,910,676 km (0.077 R)
• M46: 24,121,909 km (0.05 R)
• M47: 24,546,318 km (0.12 R)
• M48: 24,617,377 km (0.117 R)
• M49: 25,978,867 km (0.111 R)
• M50: 26,196,083 km (0.11 R)
• M51: 27,364,742 km (0.115 R)
• M52: 28,029,555 km (0.098 R)
• M53: 28,624,954 km (0.086 R)
• M54: 30,283,695 km (0.078 R)
• M55: 30,588,725 km (0.051 R)
• M56: 30,818,059 km (0.075 R)
• M57: 31,663,885 km (0.107 R)
• M58: 32,051,045 km (0.118 R)
• M59: 35,203,221 km (0.09 R)
• M60: 36,248,761 km (0.109 R)
• M61: 36,816,036 km (0.056 R)
• M62: 38,123,521 km (0.094 R)
• M63: 38,535,215 km (0.07 R)
• M64: 38,700,371 km (0.068 R)
• M65: 39,862,597 km (0.046 R)
• M66: 42,732,781 km (0.043 R)
• M67: 43,331,771 km (0.07 R)
• M68: 43,589,528 km (0.047 R)
• M69: 43,933,753 km (0.032 R)
• M70: 44,019,921 km (0.075 R)
• M71: 44,278,875 km (0.082 R)
• M72: 45,494,208 km (0.032 R)
• M73: 45,668,640 km (0.117 R)
• M74: 45,756,005 km (0.116 R)
• M75: 47,868,626 km (0.113 R)
• M76: 48,669,124 km (0.057 R)
• M77: 49,833,145 km (0.059 R)
• M78: 50,734,622 km (0.093 R)
• M79: 52,097,159 km (0.097 R)
• M80: 52,737,139 km (0.058 R)
• M81: 53,471,665 km (0.058 R)
• M82: 55,322,789 km (0.11 R)
• M83: 56,162,631 km (0.109 R)
• M84: 58,043,974 km (0.11 R)
• M85: 59,468,594 km (0.092 R)
• M86: 59,563,888 km (0.092 R)
• M87: 59,659,332 km (0.118 R)
• M88: 60,616,459 km (0.07 R)
• M89: 62,255,154 km (0.068 R)
• M90: 64,103,884 km (0.107 R)
• M91: 64,985,764 km (0.098 R)
• M92: 65,182,335 km (0.05 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: 264 - 15,570 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit