🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.69

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 18.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 350.8

Radius: 10.2

Gravity: 3.37 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.12 AU - 1.24 AU

Year: 828 Days

Day: 6.6 Hours

Environment

Temp: -174 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 25,109,967 km

• M1: 127,009 km (0.036 R)
• M2: 209,287 km (0.086 R)
• M3: 326,572 km (0.06 R)
• M4: 413,189 km (0.057 R)
• M5: 505,790 km (0.027 R)
• M6: 641,775 km (0.115 R)
• M7: 776,563 km (0.041 R)
• M8: 1,005,298 km (0.117 R)
• M9: 1,209,948 km (0.051 R)
• M10: 1,422,227 km (0.046 R)
• M11: 1,783,356 km (0.094 R)
• M12: 1,876,556 km (0.053 R)
• M13: 1,944,024 km (0.071 R)
• M14: 2,144,635 km (0.069 R)
• M15: 2,251,149 km (0.079 R)
• M16: 2,344,947 km (0.097 R)
• M17: 2,410,620 km (0.071 R)
• M18: 2,566,351 km (0.077 R)
• M19: 2,657,008 km (0.098 R)
• M20: 2,856,871 km (0.078 R)
• M21: 2,942,889 km (0.057 R)
• M22: 3,045,813 km (0.112 R)
• M23: 3,206,481 km (0.073 R)
• M24: 3,320,624 km (0.06 R)
• M25: 3,603,514 km (0.111 R)
• M26: 3,765,079 km (0.105 R)
• M27: 4,060,236 km (0.089 R)
• M28: 4,130,846 km (0.085 R)
• M29: 4,390,099 km (0.034 R)
• M30: 4,544,484 km (0.053 R)
• M31: 4,608,662 km (0.116 R)
• M32: 4,886,914 km (0.106 R)
• M33: 5,056,558 km (0.102 R)
• M34: 5,695,341 km (0.081 R)
• M35: 6,115,112 km (0.12 R)
• M36: 6,186,171 km (0.058 R)
• M37: 6,257,380 km (0.107 R)
• M38: 6,452,007 km (0.1 R)
• M39: 6,795,034 km (0.112 R)
• M40: 6,963,482 km (0.117 R)
• M41: 7,122,654 km (0.078 R)
• M42: 7,208,074 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.3

Radius: 13.2

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.3 AU - 1.32 AU

Year: 968 Days

Day: 6 Hours

Environment

Temp: -175 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 25,109,967 km

• M1: 164,408 km (0.062 R)
• M2: 257,009 km (0.107 R)
• M3: 440,267 km (0.117 R)
• M4: 527,183 km (0.099 R)
• M5: 663,018 km (0.039 R)
• M6: 753,824 km (0.113 R)
• M7: 849,566 km (0.118 R)
• M8: 969,693 km (0.115 R)
• M9: 1,065,137 km (0.066 R)
• M10: 1,344,137 km (0.064 R)
• M11: 1,429,108 km (0.078 R)
• M12: 1,533,677 km (0.111 R)
• M13: 1,634,955 km (0.116 R)
• M14: 1,720,226 km (0.103 R)
• M15: 1,838,259 km (0.095 R)
• M16: 1,920,837 km (0.041 R)
• M17: 2,024,059 km (0.032 R)
• M18: 2,243,370 km (0.074 R)
• M19: 2,366,339 km (0.097 R)
• M20: 2,583,555 km (0.052 R)
• M21: 2,676,605 km (0.03 R)
• M22: 3,113,431 km (0.11 R)
• M23: 3,220,543 km (0.081 R)
• M24: 3,661,258 km (0.064 R)
• M25: 3,758,198 km (0.107 R)
• M26: 3,913,630 km (0.099 R)
• M27: 4,188,591 km (0.109 R)
• M28: 4,349,857 km (0.075 R)
• M29: 4,435,577 km (0.079 R)
• M30: 4,521,895 km (0.027 R)
• M31: 4,687,350 km (0.117 R)
• M32: 4,784,140 km (0.087 R)
• M33: 4,908,306 km (0.049 R)
• M34: 5,069,573 km (0.043 R)
• M35: 5,731,992 km (0.056 R)
• M36: 5,902,085 km (0.112 R)
• M37: 6,073,674 km (0.064 R)
• M38: 6,169,715 km (0.092 R)
• M39: 6,256,632 km (0.12 R)
• M40: 6,421,937 km (0.12 R)
• M41: 6,578,866 km (0.084 R)
• M42: 6,697,497 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.1

Radius: 9.8

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.16 AU - 1.64 AU

Year: 1070 Days

Day: 5.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 25,109,967 km

• M1: 150,346 km (0.08 R)
• M2: 234,719 km (0.082 R)
• M3: 297,849 km (0.089 R)
• M4: 361,877 km (0.061 R)
• M5: 428,000 km (0.074 R)
• M6: 546,032 km (0.084 R)
• M7: 686,804 km (0.095 R)
• M8: 778,657 km (0.075 R)
• M9: 880,683 km (0.112 R)
• M10: 993,779 km (0.06 R)
• M11: 1,080,246 km (0.103 R)
• M12: 1,169,407 km (0.091 R)
• M13: 1,254,677 km (0.052 R)
• M14: 1,348,774 km (0.107 R)
• M15: 1,473,539 km (0.09 R)
• M16: 1,871,021 km (0.119 R)
• M17: 1,940,434 km (0.1 R)
• M18: 2,050,388 km (0.051 R)
• M19: 2,186,672 km (0.065 R)
• M20: 2,700,541 km (0.096 R)
• M21: 3,130,784 km (0.098 R)
• M22: 3,195,261 km (0.09 R)
• M23: 3,796,644 km (0.113 R)
• M24: 3,915,126 km (0.119 R)
• M25: 4,075,196 km (0.084 R)
• M26: 4,247,532 km (0.103 R)
• M27: 4,453,379 km (0.107 R)
• M28: 4,557,649 km (0.115 R)
• M29: 4,652,195 km (0.098 R)
• M30: 4,736,717 km (0.115 R)
• M31: 4,896,638 km (0.047 R)
• M32: 5,487,100 km (0.049 R)
• M33: 5,655,099 km (0.109 R)
• M34: 5,745,456 km (0.097 R)
• M35: 6,030,889 km (0.091 R)
• M36: 6,123,190 km (0.046 R)
• M37: 6,250,947 km (0.1 R)
• M38: 6,461,880 km (0.113 R)
• M39: 6,926,980 km (0.107 R)
• M40: 7,072,389 km (0.102 R)
• M41: 7,341,366 km (0.079 R)
• M42: 7,477,201 km (0.06 R)
• M43: 7,676,166 km (0.113 R)
• M44: 7,751,264 km (0.107 R)
• M45: 7,902,208 km (0.046 R)
• M46: 8,117,629 km (0.064 R)
• M47: 8,270,817 km (0.041 R)
• M48: 8,489,679 km (0.055 R)
• M49: 8,606,216 km (0.059 R)
• M50: 8,684,306 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.5

Radius: 8.8

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.19 AU - 1.81 AU

Year: 1186 Days

Day: 11.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 25,109,967 km

• M1: 117,883 km (0.102 R)
• M2: 203,603 km (0.113 R)
• M3: 280,646 km (0.113 R)
• M4: 407,654 km (0.043 R)
• M5: 474,524 km (0.108 R)
• M6: 632,051 km (0.12 R)
• M7: 741,257 km (0.077 R)
• M8: 801,396 km (0.063 R)
• M9: 907,610 km (0.032 R)
• M10: 972,536 km (0.113 R)
• M11: 1,059,452 km (0.088 R)
• M12: 1,114,205 km (0.065 R)
• M13: 1,170,005 km (0.094 R)
• M14: 1,262,756 km (0.1 R)
• M15: 1,418,038 km (0.073 R)
• M16: 1,532,929 km (0.091 R)
• M17: 1,788,592 km (0.094 R)
• M18: 1,862,942 km (0.09 R)
• M19: 2,023,461 km (0.073 R)
• M20: 2,304,106 km (0.08 R)
• M21: 2,634,867 km (0.063 R)
• M22: 2,990,461 km (0.081 R)
• M23: 3,139,012 km (0.055 R)
• M24: 3,381,959 km (0.114 R)
• M25: 3,474,560 km (0.044 R)
• M26: 3,630,890 km (0.097 R)
• M27: 3,983,043 km (0.083 R)
• M28: 4,070,109 km (0.099 R)
• M29: 4,246,186 km (0.097 R)
• M30: 4,685,705 km (0.105 R)
• M31: 4,766,188 km (0.119 R)
• M32: 4,858,640 km (0.071 R)
• M33: 5,068,974 km (0.101 R)
• M34: 5,199,124 km (0.118 R)
• M35: 5,366,225 km (0.077 R)
• M36: 5,718,079 km (0.063 R)
• M37: 5,965,065 km (0.051 R)
• M38: 6,456,943 km (0.111 R)
• M39: 6,546,552 km (0.098 R)
• M40: 6,909,477 km (0.098 R)
• M41: 7,172,620 km (0.113 R)
• M42: 7,305,462 km (0.104 R)
• M43: 7,412,425 km (0.1 R)
• M44: 7,817,835 km (0.073 R)
• M45: 7,899,815 km (0.107 R)
• M46: 8,036,996 km (0.049 R)
• M47: 8,258,251 km (0.085 R)
• M48: 8,327,814 km (0.036 R)
• M49: 8,453,476 km (0.098 R)
• M50: 8,579,737 km (0.118 R)
• M51: 8,636,135 km (0.037 R)
• M52: 8,820,141 km (0.085 R)
• M53: 8,905,412 km (0.109 R)
• M54: 9,019,704 km (0.082 R)
• M55: 9,148,807 km (0.099 R)
• M56: 9,278,509 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 452

Radius: 14.9

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 2.21 AU - 3.03 AU

Year: 2738 Days

Day: 7.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 25,109,967 km

• M1: 202,705 km (0.092 R)
• M2: 309,219 km (0.084 R)
• M3: 473,776 km (0.08 R)
• M4: 571,913 km (0.1 R)
• M5: 695,181 km (0.042 R)
• M6: 846,724 km (0.083 R)
• M7: 945,608 km (0.106 R)
• M8: 1,039,406 km (0.104 R)
• M9: 1,136,794 km (0.046 R)
• M10: 1,341,594 km (0.084 R)
• M11: 1,638,695 km (0.107 R)
• M12: 1,789,490 km (0.113 R)
• M13: 2,006,556 km (0.088 R)
• M14: 2,118,306 km (0.117 R)
• M15: 2,414,210 km (0.1 R)
• M16: 2,533,590 km (0.091 R)
• M17: 2,723,579 km (0.045 R)
• M18: 2,862,256 km (0.1 R)
• M19: 3,219,645 km (0.046 R)
• M20: 3,606,655 km (0.1 R)
• M21: 3,883,561 km (0.051 R)
• M22: 4,072,204 km (0.079 R)
• M23: 4,491,377 km (0.119 R)
• M24: 4,589,962 km (0.088 R)
• M25: 4,739,560 km (0.094 R)
• M26: 4,924,463 km (0.062 R)
• M27: 5,284,395 km (0.083 R)
• M28: 6,011,740 km (0.046 R)
• M29: 6,249,002 km (0.083 R)
• M30: 6,378,105 km (0.102 R)
• M31: 6,639,004 km (0.074 R)
• M32: 6,903,343 km (0.116 R)
• M33: 7,132,826 km (0.118 R)
• M34: 7,306,510 km (0.032 R)
• M35: 7,481,689 km (0.096 R)
• M36: 7,816,489 km (0.115 R)
• M37: 8,055,845 km (0.067 R)
• M38: 8,297,595 km (0.078 R)
• M39: 8,808,921 km (0.108 R)
• M40: 8,995,619 km (0.109 R)
• M41: 9,099,889 km (0.117 R)
• M42: 9,819,604 km (0.104 R)
• M43: 9,948,558 km (0.086 R)
• M44: 10,077,960 km (0.115 R)
• M45: 11,179,000 km (0.11 R)
• M46: 11,471,614 km (0.089 R)
• M47: 11,698,404 km (0.082 R)
• M48: 11,880,913 km (0.049 R)
• M49: 12,064,320 km (0.054 R)
• M50: 12,248,774 km (0.052 R)
• M51: 12,387,751 km (0.053 R)
• M52: 12,573,701 km (0.087 R)
• M53: 13,232,380 km (0.101 R)
• M54: 13,589,770 km (0.03 R)
• M55: 13,685,662 km (0.045 R)
• M56: 13,805,789 km (0.084 R)
• M57: 14,168,265 km (0.077 R)
• M58: 14,387,426 km (0.078 R)
• M59: 15,175,358 km (0.119 R)
• M60: 15,524,519 km (0.108 R)
• M61: 15,851,091 km (0.045 R)
• M62: 15,952,070 km (0.092 R)
• M63: 16,053,348 km (0.106 R)
• M64: 16,256,352 km (0.054 R)
• M65: 16,716,216 km (0.092 R)
• M66: 17,232,179 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 539.4

Radius: 13.3

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 5.48 AU - 5.72 AU

Year: 8557 Days

Day: 8.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 25,109,967 km

• M1: 211,232 km (0.066 R)
• M2: 403,615 km (0.082 R)
• M3: 519,703 km (0.051 R)
• M4: 706,102 km (0.037 R)
• M5: 981,362 km (0.089 R)
• M6: 1,384,229 km (0.116 R)
• M7: 1,614,759 km (0.048 R)
• M8: 1,735,036 km (0.071 R)
• M9: 2,114,117 km (0.087 R)
• M10: 2,613,325 km (0.106 R)
• M11: 2,950,070 km (0.054 R)
• M12: 3,455,711 km (0.101 R)
• M13: 3,692,225 km (0.082 R)
• M14: 4,181,410 km (0.042 R)
• M15: 4,377,234 km (0.092 R)
• M16: 4,462,205 km (0.098 R)
• M17: 5,221,115 km (0.095 R)
• M18: 5,585,087 km (0.113 R)
• M19: 6,857,267 km (0.108 R)
• M20: 6,956,301 km (0.093 R)
• M21: 7,088,994 km (0.116 R)
• M22: 7,424,542 km (0.108 R)
• M23: 7,560,228 km (0.042 R)
• M24: 7,696,661 km (0.101 R)
• M25: 7,972,220 km (0.082 R)
• M26: 8,146,053 km (0.071 R)
• M27: 8,782,442 km (0.099 R)
• M28: 9,692,895 km (0.091 R)
• M29: 10,404,981 km (0.119 R)
• M30: 10,518,974 km (0.094 R)
• M31: 10,786,605 km (0.118 R)
• M32: 11,056,479 km (0.114 R)
• M33: 11,211,612 km (0.1 R)
• M34: 12,925,705 km (0.048 R)
• M35: 13,048,375 km (0.056 R)
• M36: 13,833,913 km (0.079 R)
• M37: 15,148,729 km (0.1 R)
• M38: 15,494,450 km (0.118 R)
• M39: 15,799,181 km (0.096 R)
• M40: 16,105,856 km (0.092 R)
• M41: 16,281,933 km (0.053 R)
• M42: 16,636,181 km (0.079 R)
• M43: 16,858,782 km (0.086 R)
• M44: 17,037,701 km (0.044 R)
• M45: 17,487,542 km (0.076 R)
• M46: 17,895,795 km (0.108 R)
• M47: 19,232,751 km (0.109 R)
• M48: 19,419,748 km (0.113 R)
• M49: 20,268,417 km (0.04 R)
• M50: 20,793,057 km (0.078 R)
• M51: 21,177,374 km (0.084 R)
• M52: 21,612,554 km (0.083 R)
• M53: 22,197,482 km (0.084 R)
• M54: 22,295,468 km (0.06 R)
• M55: 23,183,930 km (0.105 R)
• M56: 23,532,643 km (0.086 R)
• M57: 23,632,574 km (0.049 R)
• M58: 23,933,116 km (0.088 R)
• M59: 24,134,325 km (0.102 R)
• M60: 24,335,983 km (0.075 R)
• M61: 24,944,547 km (0.106 R)
• M62: 25,455,424 km (0.062 R)
• M63: 25,712,134 km (0.111 R)
• M64: 26,331,768 km (0.111 R)
• M65: 26,695,590 km (0.073 R)
• M66: 27,323,153 km (0.076 R)
• M67: 27,691,463 km (0.105 R)
• M68: 28,167,334 km (0.093 R)
• M69: 28,486,127 km (0.041 R)
• M70: 28,752,711 km (0.107 R)
• M71: 29,342,126 km (0.109 R)
• M72: 31,629,179 km (0.085 R)
• M73: 32,237,593 km (0.113 R)
• M74: 34,199,270 km (0.111 R)
• M75: 34,539,306 km (0.117 R)
• M76: 35,853,673 km (0.027 R)
• M77: 37,067,959 km (0.101 R)
• M78: 37,475,763 km (0.106 R)
• M79: 38,707,851 km (0.101 R)
• M80: 38,825,883 km (0.105 R)
• M81: 39,003,306 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.9

Radius: 10.3

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 4.9 AU - 6.58 AU

Year: 8879 Days

Day: 5.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 25,109,967 km

• M1: 153,039 km (0.108 R)
• M2: 238,908 km (0.079 R)
• M3: 350,807 km (0.114 R)
• M4: 532,568 km (0.095 R)
• M5: 620,831 km (0.076 R)
• M6: 791,373 km (0.109 R)
• M7: 929,900 km (0.073 R)
• M8: 1,089,671 km (0.078 R)
• M9: 1,339,799 km (0.079 R)
• M10: 1,652,608 km (0.092 R)
• M11: 1,772,136 km (0.098 R)
• M12: 1,956,890 km (0.094 R)
• M13: 2,051,884 km (0.083 R)
• M14: 2,566,651 km (0.113 R)
• M15: 2,812,141 km (0.111 R)
• M16: 2,919,702 km (0.082 R)
• M17: 3,120,612 km (0.067 R)
• M18: 3,401,856 km (0.075 R)
• M19: 3,908,992 km (0.118 R)
• M20: 3,989,177 km (0.098 R)
• M21: 4,151,191 km (0.104 R)
• M22: 4,629,157 km (0.06 R)
• M23: 4,842,483 km (0.088 R)
• M24: 4,993,727 km (0.112 R)
• M25: 5,256,570 km (0.071 R)
• M26: 5,434,442 km (0.047 R)
• M27: 5,591,819 km (0.061 R)
• M28: 5,773,431 km (0.09 R)
• M29: 7,025,266 km (0.079 R)
• M30: 7,369,790 km (0.109 R)
• M31: 7,519,088 km (0.057 R)
• M32: 8,126,306 km (0.066 R)
• M33: 8,539,944 km (0.062 R)
• M34: 8,670,693 km (0.102 R)
• M35: 9,173,341 km (0.098 R)
• M36: 9,307,232 km (0.059 R)
• M37: 9,821,848 km (0.086 R)
• M38: 9,931,354 km (0.06 R)
• M39: 10,124,036 km (0.043 R)
• M40: 10,401,390 km (0.092 R)
• M41: 10,513,140 km (0.093 R)
• M42: 10,653,313 km (0.11 R)
• M43: 11,277,286 km (0.079 R)
• M44: 11,478,345 km (0.087 R)
• M45: 11,767,668 km (0.107 R)
• M46: 11,854,883 km (0.078 R)
• M47: 12,059,384 km (0.113 R)
• M48: 12,206,139 km (0.041 R)
• M49: 12,948,743 km (0.105 R)
• M50: 13,310,471 km (0.116 R)
• M51: 13,920,680 km (0.094 R)
• M52: 14,353,317 km (0.107 R)
• M53: 14,571,281 km (0.114 R)
• M54: 15,073,631 km (0.066 R)
• M55: 15,709,572 km (0.116 R)
• M56: 16,063,071 km (0.041 R)
• M57: 16,289,413 km (0.105 R)
• M58: 16,647,251 km (0.066 R)
• M59: 17,073,455 km (0.077 R)
• M60: 17,304,434 km (0.051 R)
• M61: 17,802,895 km (0.074 R)
• M62: 18,137,844 km (0.054 R)
• M63: 18,205,163 km (0.114 R)
• M64: 18,678,192 km (0.101 R)
• M65: 18,746,109 km (0.046 R)
• M66: 18,916,202 km (0.096 R)
• M67: 18,984,419 km (0.09 R)
• M68: 19,121,001 km (0.098 R)
• M69: 19,326,549 km (0.115 R)
• M70: 20,121,512 km (0.095 R)
• M71: 20,470,374 km (0.119 R)
• M72: 20,962,252 km (0.114 R)
• M73: 21,351,356 km (0.082 R)
• M74: 22,280,808 km (0.054 R)
• M75: 22,461,073 km (0.059 R)
• M76: 22,750,545 km (0.1 R)
• M77: 23,589,490 km (0.067 R)
• M78: 24,290,057 km (0.057 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 267 - 19,455 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit