🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.81

Radius: 1.87

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.88 AU - 1.08 AU

Year: 349 Days

Day: 26.4 Hours

Environment

Temp: 89 °C

Axial Tilt: 37.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.18

Radius: 1.37

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.3 AU - 3.16 AU

Year: 1623 Days

Day: 37.2 Hours

Environment

Temp: -95 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 2.14 AU - 3.4 AU

Year: 1659 Days

Day: 18 Hours

Environment

Temp: -98 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 3.71 AU - 4.11 AU

Year: 2783 Days

Day: 41.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 103,384,482 km

• M1: 705,803 km (0.104 R)
• M2: 1,148,164 km (0.113 R)

Planet 5 - Terrestrial

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 4.13 AU - 5.95 AU

Year: 4072 Days

Day: 16 Hours

Environment

Temp: -139 °C

Axial Tilt: 44.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 103,384,482 km

• M1: 423,512 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 947.5

Radius: 11

Gravity: 7.83 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 6.35 AU - 6.63 AU

Year: 5950 Days

Day: 5.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 103,384,482 km

• M1: 137,929 km (0.109 R)
• M2: 243,246 km (0.079 R)
• M3: 352,303 km (0.054 R)
• M4: 438,023 km (0.115 R)
• M5: 609,163 km (0.113 R)
• M6: 910,004 km (0.099 R)
• M7: 1,345,184 km (0.085 R)
• M8: 2,323,853 km (0.077 R)
• M9: 3,181,049 km (0.095 R)
• M10: 3,733,664 km (0.111 R)
• M11: 3,811,455 km (0.096 R)
• M12: 3,942,203 km (0.095 R)
• M13: 4,618,385 km (0.095 R)
• M14: 4,702,011 km (0.094 R)
• M15: 4,955,878 km (0.115 R)
• M16: 5,214,234 km (0.103 R)
• M17: 5,359,793 km (0.055 R)
• M18: 6,076,815 km (0.027 R)
• M19: 6,446,771 km (0.104 R)
• M20: 7,015,392 km (0.12 R)
• M21: 7,370,837 km (0.061 R)
• M22: 7,567,259 km (0.079 R)
• M23: 7,732,265 km (0.096 R)
• M24: 7,865,108 km (0.1 R)
• M25: 7,965,189 km (0.115 R)
• M26: 8,302,083 km (0.109 R)
• M27: 8,781,694 km (0.088 R)
• M28: 10,201,079 km (0.092 R)
• M29: 10,310,435 km (0.062 R)
• M30: 10,567,145 km (0.119 R)
• M31: 10,677,698 km (0.059 R)
• M32: 10,900,150 km (0.113 R)
• M33: 11,652,627 km (0.044 R)
• M34: 11,996,852 km (0.12 R)
• M35: 12,538,845 km (0.12 R)
• M36: 12,970,285 km (0.086 R)
• M37: 13,767,193 km (0.025 R)
• M38: 14,497,978 km (0.075 R)
• M39: 14,909,522 km (0.056 R)
• M40: 16,422,555 km (0.106 R)
• M41: 16,636,480 km (0.095 R)
• M42: 17,197,322 km (0.087 R)
• M43: 17,284,089 km (0.108 R)
• M44: 17,501,754 km (0.094 R)
• M45: 18,961,381 km (0.095 R)
• M46: 19,096,019 km (0.072 R)
• M47: 19,501,728 km (0.116 R)
• M48: 19,955,907 km (0.05 R)
• M49: 20,275,897 km (0.116 R)
• M50: 20,921,113 km (0.037 R)
• M51: 21,619,884 km (0.092 R)
• M52: 21,854,454 km (0.045 R)
• M53: 23,040,166 km (0.1 R)
• M54: 23,183,930 km (0.039 R)
• M55: 23,761,677 km (0.092 R)
• M56: 23,858,467 km (0.095 R)
• M57: 24,246,823 km (0.087 R)
• M58: 24,539,436 km (0.09 R)
• M59: 24,637,273 km (0.111 R)
• M60: 24,784,178 km (0.074 R)
• M61: 25,029,669 km (0.079 R)
• M62: 25,622,375 km (0.111 R)
• M63: 26,069,972 km (0.089 R)
• M64: 26,721,022 km (0.037 R)
• M65: 26,821,552 km (0.114 R)
• M66: 26,972,795 km (0.076 R)
• M67: 27,124,338 km (0.033 R)
• M68: 27,428,022 km (0.097 R)
• M69: 29,119,076 km (0.045 R)
• M70: 30,003,349 km (0.091 R)
• M71: 30,896,448 km (0.092 R)
• M72: 31,266,703 km (0.05 R)
• M73: 31,478,982 km (0.109 R)
• M74: 32,279,181 km (0.076 R)
• M75: 32,924,098 km (0.111 R)
• M76: 33,681,961 km (0.076 R)
• M77: 34,609,916 km (0.074 R)
• M78: 35,380,495 km (0.085 R)
• M79: 35,601,750 km (0.058 R)
• M80: 35,989,957 km (0.056 R)
• M81: 36,435,309 km (0.087 R)
• M82: 37,106,705 km (0.056 R)
• M83: 37,613,093 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.6

Radius: 9.5

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 6.02 AU - 7 AU

Year: 5978 Days

Day: 10.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 103,384,482 km

• M1: 226,790 km (0.118 R)
• M2: 299,944 km (0.107 R)
• M3: 374,593 km (0.067 R)
• M4: 436,078 km (0.114 R)
• M5: 632,201 km (0.117 R)
• M6: 761,453 km (0.105 R)
• M7: 1,155,494 km (0.099 R)
• M8: 1,218,923 km (0.092 R)
• M9: 1,366,277 km (0.059 R)
• M10: 1,806,693 km (0.065 R)
• M11: 2,209,561 km (0.054 R)
• M12: 2,289,446 km (0.092 R)
• M13: 2,452,208 km (0.068 R)
• M14: 2,703,682 km (0.075 R)
• M15: 2,810,944 km (0.049 R)
• M16: 3,029,806 km (0.075 R)
• M17: 3,141,406 km (0.061 R)
• M18: 3,209,024 km (0.119 R)
• M19: 3,322,718 km (0.102 R)
• M20: 3,743,388 km (0.036 R)
• M21: 4,008,924 km (0.104 R)
• M22: 4,558,397 km (0.082 R)
• M23: 4,868,064 km (0.069 R)
• M24: 5,291,725 km (0.104 R)
• M25: 6,033,432 km (0.105 R)
• M26: 6,117,805 km (0.086 R)
• M27: 6,259,474 km (0.112 R)
• M28: 6,373,468 km (0.12 R)
• M29: 8,166,249 km (0.117 R)
• M30: 9,671,951 km (0.076 R)
• M31: 10,103,391 km (0.041 R)
• M32: 10,507,306 km (0.089 R)
• M33: 10,643,141 km (0.056 R)
• M34: 11,053,936 km (0.051 R)
• M35: 11,192,165 km (0.083 R)
• M36: 11,261,429 km (0.107 R)
• M37: 12,282,135 km (0.097 R)
• M38: 12,713,126 km (0.092 R)
• M39: 12,785,382 km (0.093 R)
• M40: 13,149,054 km (0.096 R)
• M41: 14,410,763 km (0.079 R)
• M42: 15,324,507 km (0.101 R)
• M43: 15,672,023 km (0.098 R)
• M44: 15,749,514 km (0.108 R)
• M45: 16,061,127 km (0.102 R)
• M46: 17,167,702 km (0.111 R)
• M47: 17,327,772 km (0.094 R)
• M48: 17,851,514 km (0.064 R)
• M49: 18,054,369 km (0.094 R)
• M50: 18,339,502 km (0.106 R)
• M51: 19,121,301 km (0.041 R)
• M52: 19,370,381 km (0.032 R)
• M53: 19,746,171 km (0.09 R)
• M54: 20,039,981 km (0.107 R)
• M55: 20,166,391 km (0.051 R)
• M56: 20,674,725 km (0.07 R)
• M57: 21,015,808 km (0.081 R)
• M58: 21,272,967 km (0.11 R)
• M59: 21,445,004 km (0.062 R)
• M60: 22,530,337 km (0.116 R)
• M61: 23,367,187 km (0.059 R)
• M62: 23,500,180 km (0.11 R)
• M63: 23,633,472 km (0.068 R)
• M64: 23,900,953 km (0.071 R)
• M65: 25,161,913 km (0.099 R)
• M66: 25,754,769 km (0.066 R)
• M67: 26,629,468 km (0.107 R)
• M68: 26,907,720 km (0.041 R)
• M69: 27,093,820 km (0.079 R)
• M70: 27,514,040 km (0.106 R)
• M71: 28,455,310 km (0.058 R)
• M72: 29,120,572 km (0.074 R)
• M73: 29,407,351 km (0.116 R)
• M74: 29,790,920 km (0.081 R)
• M75: 30,321,244 km (0.099 R)
• M76: 30,903,330 km (0.079 R)
• M77: 32,177,156 km (0.12 R)
• M78: 32,622,060 km (0.104 R)
• M79: 32,820,426 km (0.034 R)
• M80: 32,969,426 km (0.082 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14.1

Radius: 14.7

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 6.75 AU - 7.85 AU

Year: 7098 Days

Day: 12.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 103,384,482 km

• M1: 205,547 km (0.106 R)
• M2: 337,493 km (0.045 R)
• M3: 557,551 km (0.111 R)
• M4: 809,474 km (0.098 R)
• M5: 954,135 km (0.088 R)
• M6: 1,185,264 km (0.076 R)
• M7: 1,375,253 km (0.1 R)
• M8: 1,544,448 km (0.114 R)
• M9: 1,696,290 km (0.065 R)
• M10: 2,068,191 km (0.114 R)
• M11: 2,165,280 km (0.087 R)
• M12: 2,771,301 km (0.106 R)
• M13: 3,109,093 km (0.094 R)
• M14: 3,449,876 km (0.119 R)
• M15: 3,879,522 km (0.115 R)
• M16: 4,778,156 km (0.057 R)
• M17: 4,932,242 km (0.098 R)
• M18: 5,577,308 km (0.06 R)
• M19: 6,840,213 km (0.087 R)
• M20: 6,960,639 km (0.058 R)
• M21: 7,573,093 km (0.081 R)
• M22: 7,794,947 km (0.113 R)
• M23: 8,545,778 km (0.115 R)
• M24: 8,893,444 km (0.064 R)
• M25: 9,039,601 km (0.073 R)
• M26: 9,230,937 km (0.09 R)
• M27: 10,039,962 km (0.069 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 607.3

Radius: 4.4

Gravity: 31.37 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 13.49 AU - 18.55 AU

Year: 23076 Days

Day: 19.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (99)

Outer Limit: 103,384,482 km

• M1: 514,766 km (0.059 R)
• M2: 697,575 km (0.101 R)
• M3: 746,344 km (0.054 R)
• M4: 1,148,313 km (0.079 R)
• M5: 1,479,673 km (0.112 R)
• M6: 1,805,198 km (0.092 R)
• M7: 2,081,355 km (0.097 R)
• M8: 2,188,318 km (0.114 R)
• M9: 2,297,075 km (0.083 R)
• M10: 3,821,178 km (0.055 R)
• M11: 4,129,500 km (0.108 R)
• M12: 4,537,453 km (0.076 R)
• M13: 6,191,257 km (0.074 R)
• M14: 6,552,686 km (0.1 R)
• M15: 7,027,510 km (0.099 R)
• M16: 7,732,564 km (0.051 R)
• M17: 8,516,756 km (0.076 R)
• M18: 8,630,900 km (0.116 R)
• M19: 8,745,492 km (0.117 R)
• M20: 9,150,603 km (0.065 R)
• M21: 9,561,698 km (0.082 R)
• M22: 10,220,078 km (0.057 R)
• M23: 10,585,246 km (0.113 R)
• M24: 10,831,035 km (0.074 R)
• M25: 11,391,130 km (0.104 R)
• M26: 11,642,903 km (0.104 R)
• M27: 12,216,461 km (0.102 R)
• M28: 12,280,788 km (0.094 R)
• M29: 13,656,640 km (0.105 R)
• M30: 15,426,532 km (0.116 R)
• M31: 15,565,658 km (0.053 R)
• M32: 15,635,371 km (0.12 R)
• M33: 16,055,891 km (0.081 R)
• M34: 16,551,060 km (0.092 R)
• M35: 17,701,766 km (0.049 R)
• M36: 17,774,471 km (0.06 R)
• M37: 18,581,552 km (0.089 R)
• M38: 18,655,453 km (0.091 R)
• M39: 21,150,446 km (0.039 R)
• M40: 21,927,009 km (0.108 R)
• M41: 22,240,117 km (0.083 R)
• M42: 22,318,656 km (0.106 R)
• M43: 22,712,697 km (0.106 R)
• M44: 22,950,258 km (0.107 R)
• M45: 23,029,545 km (0.081 R)
• M46: 23,109,131 km (0.082 R)
• M47: 24,069,549 km (0.087 R)
• M48: 24,554,695 km (0.12 R)
• M49: 26,944,671 km (0.112 R)
• M50: 27,196,145 km (0.076 R)
• M51: 27,364,143 km (0.116 R)
• M52: 29,666,455 km (0.052 R)
• M53: 30,796,966 km (0.115 R)
• M54: 31,147,623 km (0.048 R)
• M55: 31,941,389 km (0.061 R)
• M56: 32,474,407 km (0.043 R)
• M57: 33,909,798 km (0.111 R)
• M58: 34,817,408 km (0.095 R)
• M59: 36,934,966 km (0.113 R)
• M60: 37,121,066 km (0.077 R)
• M61: 37,400,814 km (0.12 R)
• M62: 40,045,405 km (0.099 R)
• M63: 41,583,421 km (0.112 R)
• M64: 42,554,461 km (0.115 R)
• M65: 44,123,443 km (0.101 R)
• M66: 44,320,912 km (0.112 R)
• M67: 47,015,469 km (0.089 R)
• M68: 48,128,328 km (0.078 R)
• M69: 48,841,012 km (0.117 R)
• M70: 48,943,038 km (0.095 R)
• M71: 49,454,662 km (0.106 R)
• M72: 52,665,631 km (0.113 R)
• M73: 52,875,068 km (0.117 R)
• M74: 53,400,007 km (0.12 R)
• M75: 55,729,844 km (0.032 R)
• M76: 58,200,902 km (0.115 R)
• M77: 58,634,287 km (0.106 R)
• M78: 58,742,895 km (0.054 R)
• M79: 58,851,503 km (0.065 R)
• M80: 60,597,759 km (0.074 R)
• M81: 61,808,305 km (0.114 R)
• M82: 63,026,630 km (0.109 R)
• M83: 67,182,758 km (0.105 R)
• M84: 69,351,179 km (0.108 R)
• M85: 69,465,921 km (0.087 R)
• M86: 71,774,366 km (0.117 R)
• M87: 72,122,929 km (0.108 R)
• M88: 72,821,401 km (0.058 R)
• M89: 73,639,253 km (0.065 R)
• M90: 73,756,388 km (0.119 R)
• M91: 73,873,523 km (0.109 R)
• M92: 74,460,096 km (0.087 R)
• M93: 74,812,848 km (0.094 R)
• M94: 75,992,577 km (0.086 R)
• M95: 76,229,241 km (0.094 R)
• M96: 77,535,380 km (0.077 R)
• M97: 78,370,435 km (0.072 R)
• M98: 78,848,999 km (0.054 R)
• M99: 80,169,948 km (0.084 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 685.7

Radius: 6.5

Gravity: 16.23 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 15.07 AU - 24.49 AU

Year: 31660 Days

Day: 23.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 103,384,482 km

• M1: 90,058 km (0.087 R)
• M2: 216,618 km (0.051 R)
• M3: 289,921 km (0.027 R)
• M4: 372,947 km (0.088 R)
• M5: 786,436 km (0.072 R)
• M6: 846,126 km (0.101 R)
• M7: 1,002,007 km (0.071 R)
• M8: 1,872,367 km (0.056 R)
• M9: 2,118,306 km (0.09 R)
• M10: 3,595,585 km (0.057 R)
• M11: 3,901,213 km (0.073 R)
• M12: 4,004,885 km (0.104 R)
• M13: 5,434,292 km (0.053 R)
• M14: 6,263,214 km (0.113 R)
• M15: 6,445,873 km (0.102 R)
• M16: 8,035,650 km (0.116 R)
• M17: 8,568,966 km (0.091 R)
• M18: 8,839,738 km (0.045 R)
• M19: 8,976,321 km (0.101 R)
• M20: 9,739,420 km (0.082 R)
• M21: 9,880,491 km (0.109 R)
• M22: 11,327,401 km (0.038 R)
• M23: 12,455,220 km (0.096 R)
• M24: 12,762,045 km (0.088 R)
• M25: 12,916,430 km (0.109 R)
• M26: 14,173,201 km (0.115 R)
• M27: 14,253,087 km (0.106 R)
• M28: 15,633,127 km (0.098 R)
• M29: 18,431,206 km (0.108 R)
• M30: 18,693,152 km (0.091 R)
• M31: 18,956,444 km (0.067 R)
• M32: 19,309,196 km (0.118 R)
• M33: 20,021,281 km (0.112 R)
• M34: 21,105,567 km (0.046 R)
• M35: 23,048,394 km (0.06 R)
• M36: 23,993,554 km (0.113 R)
• M37: 24,662,555 km (0.11 R)
• M38: 26,607,776 km (0.08 R)
• M39: 26,706,361 km (0.096 R)
• M40: 28,601,766 km (0.098 R)
• M41: 29,821,139 km (0.072 R)
• M42: 30,334,259 km (0.078 R)
• M43: 30,643,478 km (0.107 R)
• M44: 30,746,701 km (0.112 R)
• M45: 31,265,057 km (0.107 R)
• M46: 31,786,256 km (0.098 R)
• M47: 32,310,298 km (0.117 R)
• M48: 34,434,887 km (0.105 R)
• M49: 34,757,420 km (0.085 R)
• M50: 35,297,318 km (0.112 R)
• M51: 35,405,627 km (0.064 R)
• M52: 36,057,724 km (0.101 R)
• M53: 36,166,781 km (0.101 R)
• M54: 36,713,861 km (0.118 R)
• M55: 37,484,290 km (0.097 R)
• M56: 40,959,747 km (0.077 R)
• M57: 41,758,600 km (0.107 R)
• M58: 44,419,647 km (0.034 R)
• M59: 44,888,038 km (0.082 R)
• M60: 47,015,768 km (0.077 R)
• M61: 47,373,607 km (0.115 R)
• M62: 48,572,933 km (0.063 R)
• M63: 50,268,625 km (0.072 R)
• M64: 50,634,541 km (0.093 R)
• M65: 51,001,355 km (0.038 R)
• M66: 52,353,720 km (0.115 R)
• M67: 52,972,307 km (0.061 R)
• M68: 53,220,490 km (0.042 R)
• M69: 54,091,897 km (0.115 R)
• M70: 54,592,003 km (0.056 R)
• M71: 56,101,445 km (0.094 R)
• M72: 59,032,816 km (0.076 R)
• M73: 60,452,200 km (0.076 R)
• M74: 63,061,786 km (0.116 R)
• M75: 63,324,779 km (0.081 R)
• M76: 66,107,897 km (0.093 R)
• M77: 67,178,569 km (0.081 R)
• M78: 67,581,436 km (0.1 R)
• M79: 71,381,222 km (0.076 R)
• M80: 72,479,570 km (0.101 R)
• M81: 73,306,996 km (0.107 R)
• M82: 75,110,398 km (0.101 R)
• M83: 77,068,933 km (0.038 R)
• M84: 80,180,270 km (0.066 R)
• M85: 80,607,671 km (0.097 R)
• M86: 82,325,055 km (0.111 R)
• M87: 86,817,030 km (0.12 R)
• M88: 88,724,403 km (0.112 R)
• M89: 89,314,118 km (0.11 R)
• M90: 89,609,424 km (0.07 R)
• M91: 92,879,184 km (0.092 R)
• M92: 93,328,128 km (0.105 R)
• M93: 94,980,286 km (0.107 R)
• M94: 97,856,605 km (0.107 R)
• M95: 100,761,496 km (0.065 R)
• M96: 101,222,706 km (0.079 R)
• M97: 102,456,141 km (0.093 R)

Kuiper Belt

Range: 30.5 - 58.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 338 - 12,339 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit