🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.8 AU - 1.26 AU

Year: 394 Days

Day: 14 Hours

Environment

Temp: -0 °C

Axial Tilt: 4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.87 AU - 2.03 AU

Year: 1026 Days

Day: 39.1 Hours

Environment

Temp: -75 °C

Axial Tilt: 29.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,526,109 km

• M1: 1,264,700 km (0.08 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 2.75 AU - 3.37 AU

Year: 2017 Days

Day: 18 Hours

Environment

Temp: -115 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,526,109 km

• M1: 194,328 km (0.109 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 2.78 AU - 4.48 AU

Year: 2605 Days

Day: 47.6 Hours

Environment

Temp: -121 °C

Axial Tilt: 23.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463

Radius: 9.9

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 4.59 AU - 5.61 AU

Year: 4339 Days

Day: 11 Hours

Environment

Temp: -141 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 77,526,109 km

• M1: 176,226 km (0.091 R)
• M2: 415,732 km (0.097 R)
• M3: 484,548 km (0.077 R)
• M4: 625,618 km (0.071 R)
• M5: 707,000 km (0.027 R)
• M6: 904,469 km (0.108 R)
• M7: 1,095,356 km (0.032 R)
• M8: 1,157,888 km (0.117 R)
• M9: 1,260,362 km (0.1 R)
• M10: 1,393,055 km (0.115 R)
• M11: 1,475,035 km (0.112 R)
• M12: 1,730,698 km (0.06 R)
• M13: 2,093,921 km (0.104 R)
• M14: 2,284,659 km (0.109 R)
• M15: 3,049,702 km (0.119 R)
• M16: 3,395,273 km (0.091 R)
• M17: 4,025,080 km (0.073 R)
• M18: 4,163,458 km (0.092 R)
• M19: 4,243,194 km (0.105 R)
• M20: 4,526,233 km (0.075 R)
• M21: 4,732,379 km (0.117 R)
• M22: 5,196,581 km (0.068 R)
• M23: 5,282,600 km (0.085 R)
• M24: 5,499,667 km (0.107 R)
• M25: 5,609,322 km (0.093 R)
• M26: 5,875,456 km (0.116 R)
• M27: 6,191,257 km (0.084 R)
• M28: 6,675,207 km (0.115 R)
• M29: 6,910,075 km (0.077 R)
• M30: 7,076,129 km (0.119 R)
• M31: 7,315,635 km (0.086 R)
• M32: 7,728,824 km (0.047 R)
• M33: 8,451,382 km (0.084 R)
• M34: 8,578,092 km (0.09 R)
• M35: 8,910,648 km (0.1 R)
• M36: 9,614,805 km (0.065 R)
• M37: 10,147,972 km (0.119 R)
• M38: 10,363,991 km (0.079 R)
• M39: 10,499,676 km (0.077 R)
• M40: 11,187,378 km (0.076 R)
• M41: 11,298,828 km (0.049 R)
• M42: 11,410,578 km (0.048 R)
• M43: 11,832,892 km (0.078 R)
• M44: 12,031,708 km (0.071 R)
• M45: 12,260,443 km (0.092 R)
• M46: 12,548,269 km (0.102 R)
• M47: 12,692,931 km (0.111 R)
• M48: 12,984,198 km (0.067 R)
• M49: 13,484,303 km (0.061 R)
• M50: 13,573,164 km (0.109 R)
• M51: 13,811,175 km (0.106 R)
• M52: 14,140,888 km (0.05 R)
• M53: 14,868,981 km (0.107 R)
• M54: 15,206,773 km (0.116 R)
• M55: 15,330,191 km (0.107 R)
• M56: 15,515,992 km (0.084 R)
• M57: 16,329,954 km (0.03 R)
• M58: 16,551,359 km (0.086 R)
• M59: 16,869,553 km (0.027 R)
• M60: 16,965,446 km (0.076 R)
• M61: 17,189,843 km (0.088 R)
• M62: 17,254,020 km (0.11 R)
• M63: 17,803,643 km (0.089 R)
• M64: 17,966,405 km (0.109 R)
• M65: 18,129,766 km (0.108 R)
• M66: 19,553,938 km (0.114 R)
• M67: 19,822,915 km (0.103 R)
• M68: 20,876,532 km (0.114 R)
• M69: 21,013,863 km (0.065 R)
• M70: 21,289,273 km (0.064 R)
• M71: 21,913,545 km (0.066 R)
• M72: 23,002,617 km (0.052 R)
• M73: 23,073,527 km (0.096 R)
• M74: 23,893,772 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 31.1

Radius: 9.9

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 6.91 AU - 9.81 AU

Year: 9106 Days

Day: 11.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,526,109 km

• M1: 124,615 km (0.079 R)
• M2: 619,634 km (0.034 R)
• M3: 1,077,254 km (0.102 R)
• M4: 1,152,951 km (0.083 R)
• M5: 1,835,865 km (0.099 R)
• M6: 2,248,755 km (0.095 R)
• M7: 3,214,110 km (0.08 R)
• M8: 3,367,598 km (0.102 R)
• M9: 3,653,030 km (0.107 R)
• M10: 4,935,533 km (0.115 R)
• M11: 5,524,350 km (0.116 R)
• M12: 6,590,235 km (0.115 R)
• M13: 7,201,342 km (0.06 R)
• M14: 7,924,648 km (0.082 R)
• M15: 8,574,052 km (0.101 R)
• M16: 11,615,826 km (0.064 R)
• M17: 12,221,398 km (0.089 R)
• M18: 12,550,065 km (0.117 R)
• M19: 14,305,596 km (0.091 R)
• M20: 14,443,824 km (0.087 R)
• M21: 14,814,528 km (0.053 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.3

Radius: 14.4

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 9.12 AU - 10.6 AU

Year: 11664 Days

Day: 12.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 77,526,109 km

• M1: 204,500 km (0.11 R)
• M2: 382,671 km (0.119 R)
• M3: 537,505 km (0.062 R)
• M4: 684,261 km (0.108 R)
• M5: 904,469 km (0.114 R)
• M6: 1,756,728 km (0.087 R)
• M7: 2,397,904 km (0.102 R)
• M8: 2,685,880 km (0.12 R)
• M9: 2,804,212 km (0.118 R)
• M10: 3,015,893 km (0.095 R)
• M11: 3,682,352 km (0.066 R)
• M12: 3,982,146 km (0.083 R)
• M13: 4,083,872 km (0.078 R)
• M14: 4,220,904 km (0.097 R)
• M15: 5,371,760 km (0.082 R)
• M16: 7,021,526 km (0.094 R)
• M17: 7,646,546 km (0.091 R)
• M18: 7,816,190 km (0.064 R)
• M19: 9,309,027 km (0.04 R)
• M20: 9,856,705 km (0.044 R)
• M21: 10,274,382 km (0.097 R)
• M22: 10,603,347 km (0.11 R)
• M23: 12,399,120 km (0.079 R)
• M24: 16,373,936 km (0.1 R)
• M25: 17,592,410 km (0.103 R)
• M26: 17,760,858 km (0.106 R)
• M27: 18,553,876 km (0.041 R)
• M28: 20,350,995 km (0.095 R)
• M29: 21,359,883 km (0.04 R)
• M30: 21,479,711 km (0.093 R)
• M31: 21,659,827 km (0.098 R)
• M32: 21,900,679 km (0.055 R)
• M33: 22,324,490 km (0.092 R)
• M34: 22,506,850 km (0.087 R)
• M35: 23,057,221 km (0.062 R)
• M36: 23,797,730 km (0.085 R)
• M37: 23,922,046 km (0.104 R)
• M38: 24,608,999 km (0.039 R)
• M39: 24,797,493 km (0.071 R)
• M40: 25,112,695 km (0.108 R)
• M41: 26,002,354 km (0.11 R)
• M42: 26,386,820 km (0.109 R)
• M43: 26,902,335 km (0.115 R)
• M44: 28,074,434 km (0.102 R)
• M45: 28,865,208 km (0.087 R)
• M46: 29,130,445 km (0.053 R)
• M47: 29,997,963 km (0.102 R)
• M48: 30,199,322 km (0.106 R)
• M49: 30,468,598 km (0.079 R)
• M50: 30,603,536 km (0.075 R)
• M51: 30,738,622 km (0.073 R)
• M52: 31,895,164 km (0.12 R)
• M53: 33,412,984 km (0.115 R)
• M54: 33,621,673 km (0.118 R)
• M55: 34,040,696 km (0.071 R)
• M56: 34,601,838 km (0.087 R)
• M57: 34,883,680 km (0.109 R)
• M58: 35,236,881 km (0.103 R)
• M59: 36,089,589 km (0.091 R)
• M60: 37,526,027 km (0.067 R)
• M61: 39,347,531 km (0.077 R)
• M62: 39,494,586 km (0.041 R)
• M63: 39,641,641 km (0.094 R)
• M64: 40,010,399 km (0.111 R)
• M65: 41,272,407 km (0.071 R)
• M66: 43,076,408 km (0.099 R)
• M67: 43,303,647 km (0.113 R)
• M68: 43,835,617 km (0.086 R)
• M69: 44,752,502 km (0.037 R)
• M70: 45,213,413 km (0.063 R)
• M71: 45,753,013 km (0.06 R)
• M72: 47,854,414 km (0.071 R)
• M73: 48,325,647 km (0.082 R)
• M74: 48,798,526 km (0.04 R)
• M75: 49,748,772 km (0.115 R)
• M76: 50,066,817 km (0.09 R)
• M77: 50,465,346 km (0.12 R)
• M78: 51,105,325 km (0.057 R)
• M79: 51,908,965 km (0.096 R)
• M80: 52,797,876 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.8

Radius: 13.8

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 10.7 AU - 12.72 AU

Year: 15096 Days

Day: 13.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 77,526,109 km

• M1: 223,948 km (0.086 R)
• M2: 382,372 km (0.051 R)
• M3: 918,830 km (0.054 R)
• M4: 1,409,362 km (0.096 R)
• M5: 1,558,062 km (0.112 R)
• M6: 1,669,811 km (0.114 R)
• M7: 1,886,728 km (0.083 R)
• M8: 2,237,685 km (0.091 R)
• M9: 3,143,051 km (0.117 R)
• M10: 3,579,279 km (0.105 R)
• M11: 3,672,628 km (0.05 R)
• M12: 3,804,723 km (0.039 R)
• M13: 3,938,463 km (0.045 R)
• M14: 4,132,192 km (0.053 R)
• M15: 4,509,329 km (0.097 R)
• M16: 4,835,602 km (0.107 R)
• M17: 5,684,869 km (0.096 R)
• M18: 6,127,080 km (0.118 R)
• M19: 6,216,839 km (0.074 R)
• M20: 6,465,919 km (0.119 R)
• M21: 6,649,326 km (0.092 R)
• M22: 6,811,191 km (0.066 R)
• M23: 7,138,810 km (0.09 R)
• M24: 7,376,073 km (0.103 R)
• M25: 7,591,793 km (0.083 R)
• M26: 9,340,592 km (0.091 R)
• M27: 9,941,526 km (0.067 R)
• M28: 10,233,392 km (0.118 R)
• M29: 11,263,523 km (0.106 R)
• M30: 11,540,129 km (0.107 R)
• M31: 12,611,699 km (0.063 R)
• M32: 13,509,286 km (0.083 R)
• M33: 14,397,748 km (0.089 R)
• M34: 15,366,095 km (0.117 R)
• M35: 15,457,948 km (0.072 R)
• M36: 15,611,435 km (0.109 R)
• M37: 15,951,023 km (0.104 R)
• M38: 16,075,189 km (0.09 R)
• M39: 16,230,621 km (0.107 R)
• M40: 16,668,943 km (0.085 R)
• M41: 16,921,165 km (0.037 R)
• M42: 17,111,004 km (0.098 R)
• M43: 17,813,666 km (0.081 R)
• M44: 18,787,099 km (0.109 R)
• M45: 19,181,289 km (0.057 R)
• M46: 19,711,165 km (0.094 R)
• M47: 19,977,898 km (0.09 R)
• M48: 20,920,963 km (0.088 R)
• M49: 21,363,773 km (0.114 R)
• M50: 21,500,655 km (0.12 R)
• M51: 22,120,140 km (0.099 R)
• M52: 22,397,494 km (0.113 R)
• M53: 23,236,140 km (0.027 R)
• M54: 23,341,606 km (0.113 R)
• M55: 23,517,982 km (0.107 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 102.2

Radius: 5.8

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 11 AU - 14.28 AU

Year: 16930 Days

Day: 19.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 77,526,109 km

• M1: 75,397 km (0.063 R)
• M2: 451,187 km (0.083 R)
• M3: 499,507 km (0.114 R)
• M4: 797,656 km (0.076 R)
• M5: 887,564 km (0.072 R)
• M6: 1,514,379 km (0.05 R)
• M7: 1,879,697 km (0.116 R)
• M8: 1,960,031 km (0.057 R)
• M9: 2,165,878 km (0.096 R)
• M10: 2,250,102 km (0.103 R)
• M11: 2,576,075 km (0.119 R)
• M12: 2,939,897 km (0.063 R)
• M13: 3,151,728 km (0.104 R)
• M14: 3,319,876 km (0.064 R)
• M15: 4,099,430 km (0.116 R)
• M16: 4,309,466 km (0.038 R)
• M17: 4,631,251 km (0.108 R)
• M18: 4,712,931 km (0.108 R)
• M19: 5,156,489 km (0.112 R)
• M20: 5,905,526 km (0.106 R)
• M21: 6,172,558 km (0.067 R)
• M22: 6,292,685 km (0.102 R)
• M23: 6,413,410 km (0.118 R)
• M24: 7,375,325 km (0.112 R)
• M25: 7,695,165 km (0.102 R)
• M26: 7,759,642 km (0.068 R)
• M27: 8,282,187 km (0.05 R)
• M28: 8,648,103 km (0.089 R)
• M29: 8,748,783 km (0.106 R)
• M30: 10,163,530 km (0.03 R)
• M31: 10,376,408 km (0.072 R)
• M32: 10,447,766 km (0.056 R)
• M33: 11,352,833 km (0.116 R)
• M34: 11,721,891 km (0.087 R)
• M35: 11,796,091 km (0.061 R)
• M36: 12,245,035 km (0.081 R)
• M37: 12,471,675 km (0.082 R)
• M38: 12,852,402 km (0.113 R)
• M39: 12,890,699 km (0.109 R)
• M40: 14,373,363 km (0.086 R)
• M41: 15,663,196 km (0.109 R)
• M42: 17,326,874 km (0.118 R)
• M43: 17,708,947 km (0.113 R)
• M44: 17,965,208 km (0.107 R)
• M45: 18,697,789 km (0.068 R)
• M46: 19,133,268 km (0.089 R)
• M47: 19,308,448 km (0.112 R)
• M48: 22,136,296 km (0.06 R)
• M49: 23,997,593 km (0.118 R)
• M50: 24,139,262 km (0.057 R)
• M51: 24,186,535 km (0.032 R)
• M52: 24,328,503 km (0.11 R)
• M53: 24,565,766 km (0.094 R)
• M54: 24,994,663 km (0.064 R)
• M55: 25,763,446 km (0.061 R)
• M56: 26,588,778 km (0.068 R)
• M57: 27,521,520 km (0.111 R)
• M58: 28,514,850 km (0.089 R)
• M59: 29,570,263 km (0.078 R)
• M60: 30,536,366 km (0.052 R)
• M61: 30,587,379 km (0.082 R)
• M62: 30,741,016 km (0.108 R)
• M63: 32,551,300 km (0.026 R)
• M64: 32,865,156 km (0.103 R)
• M65: 33,232,569 km (0.113 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 302

Radius: 4.9

Gravity: 12.58 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 17.78 AU - 20.04 AU

Year: 30979 Days

Day: 18.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 77,526,109 km

• M1: 88,263 km (0.115 R)
• M2: 138,378 km (0.116 R)
• M3: 349,012 km (0.08 R)
• M4: 423,811 km (0.107 R)
• M5: 483,800 km (0.076 R)
• M6: 1,374,356 km (0.118 R)
• M7: 1,495,680 km (0.099 R)
• M8: 1,588,879 km (0.055 R)
• M9: 1,813,725 km (0.075 R)
• M10: 2,293,485 km (0.067 R)
• M11: 3,321,372 km (0.111 R)
• M12: 3,650,038 km (0.12 R)
• M13: 4,561,239 km (0.076 R)
• M14: 4,742,402 km (0.095 R)
• M15: 5,252,980 km (0.108 R)
• M16: 5,586,732 km (0.07 R)
• M17: 6,375,562 km (0.079 R)
• M18: 7,409,433 km (0.098 R)
• M19: 7,622,460 km (0.112 R)
• M20: 9,112,006 km (0.072 R)
• M21: 9,744,057 km (0.096 R)
• M22: 10,390,171 km (0.087 R)
• M23: 10,628,480 km (0.113 R)
• M24: 11,050,047 km (0.103 R)
• M25: 11,661,603 km (0.118 R)
• M26: 12,158,717 km (0.119 R)
• M27: 13,625,972 km (0.112 R)
• M28: 14,812,882 km (0.077 R)
• M29: 15,013,792 km (0.088 R)
• M30: 15,148,430 km (0.069 R)
• M31: 15,418,604 km (0.094 R)
• M32: 15,826,856 km (0.08 R)
• M33: 16,169,884 km (0.115 R)
• M34: 17,636,991 km (0.032 R)
• M35: 18,422,230 km (0.096 R)
• M36: 19,073,280 km (0.112 R)
• M37: 19,291,992 km (0.064 R)
• M38: 20,397,670 km (0.066 R)
• M39: 20,696,117 km (0.119 R)
• M40: 21,599,689 km (0.09 R)
• M41: 22,439,381 km (0.115 R)
• M42: 23,523,218 km (0.053 R)
• M43: 25,021,441 km (0.092 R)
• M44: 25,340,832 km (0.118 R)
• M45: 25,902,871 km (0.041 R)
• M46: 25,983,505 km (0.102 R)
• M47: 26,144,921 km (0.069 R)
• M48: 28,108,991 km (0.03 R)
• M49: 30,971,397 km (0.107 R)
• M50: 31,744,519 km (0.1 R)
• M51: 33,397,276 km (0.089 R)
• M52: 36,243,675 km (0.093 R)
• M53: 36,514,447 km (0.109 R)
• M54: 36,604,953 km (0.074 R)
• M55: 36,785,967 km (0.12 R)
• M56: 37,148,891 km (0.06 R)
• M57: 39,074,216 km (0.119 R)
• M58: 39,444,620 km (0.114 R)
• M59: 44,364,146 km (0.091 R)
• M60: 46,993,628 km (0.108 R)
• M61: 47,881,342 km (0.052 R)
• M62: 48,476,292 km (0.062 R)
• M63: 49,673,225 km (0.091 R)
• M64: 52,096,411 km (0.089 R)
• M65: 52,504,065 km (0.061 R)
• M66: 53,424,990 km (0.11 R)
• M67: 55,906,669 km (0.079 R)
• M68: 56,428,466 km (0.103 R)
• M69: 58,003,433 km (0.085 R)
• M70: 58,108,899 km (0.099 R)
• M71: 60,446,216 km (0.057 R)
• M72: 61,303,861 km (0.095 R)
• M73: 61,518,833 km (0.12 R)
• M74: 62,705,892 km (0.044 R)
• M75: 62,814,201 km (0.096 R)
• M76: 63,247,885 km (0.111 R)
• M77: 63,574,009 km (0.095 R)
• M78: 63,682,766 km (0.109 R)
• M79: 64,227,602 km (0.116 R)
• M80: 65,651,474 km (0.099 R)
• M81: 66,643,308 km (0.094 R)
• M82: 67,751,080 km (0.067 R)
• M83: 68,418,736 km (0.112 R)
• M84: 69,760,479 km (0.043 R)
• M85: 70,209,721 km (0.1 R)
• M86: 71,676,229 km (0.076 R)
• M87: 73,723,327 km (0.062 R)
• M88: 75,444,001 km (0.091 R)
• M89: 75,789,722 km (0.116 R)
• M90: 76,830,026 km (0.103 R)
• M91: 76,945,814 km (0.084 R)
• M92: 77,177,841 km (0.099 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: 314 - 20,201 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit