🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.56 AU - 0.66 AU

Year: 168 Days

Day: 37.9 Hours

Environment

Temp: 216 °C

Axial Tilt: 23.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 96,336,842 km

• M1: 342,130 km (0.096 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.27

Radius: 1.1

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.59 AU - 0.99 AU

Year: 248 Days

Day: 12.4 Hours

Environment

Temp: 177 °C

Axial Tilt: 29.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.19

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.84 AU - 1.16 AU

Year: 353 Days

Day: 31.4 Hours

Environment

Temp: 161 °C

Axial Tilt: 18.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 96,336,842 km

• M1: 169,195 km (0.094 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.06 AU - 1.46 AU

Year: 499 Days

Day: 33.8 Hours

Environment

Temp: 14 °C

Axial Tilt: 16.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 5.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 4.3 AU - 6.38 AU

Year: 4357 Days

Day: 36.1 Hours

Environment

Temp: -141 °C

Axial Tilt: 35.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 7.17 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 8.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.8

Radius: 10.5

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 7.34 AU - 10.64 AU

Year: 9518 Days

Day: 7.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 96,336,842 km

• M1: 134,488 km (0.031 R)
• M2: 333,902 km (0.096 R)
• M3: 402,717 km (0.12 R)
• M4: 630,555 km (0.077 R)
• M5: 721,361 km (0.11 R)
• M6: 900,430 km (0.106 R)
• M7: 969,245 km (0.099 R)
• M8: 1,149,959 km (0.1 R)
• M9: 1,912,609 km (0.09 R)
• M10: 2,095,268 km (0.071 R)
• M11: 2,703,084 km (0.086 R)
• M12: 2,908,931 km (0.094 R)
• M13: 3,335,883 km (0.114 R)
• M14: 3,725,885 km (0.057 R)
• M15: 4,248,729 km (0.103 R)
• M16: 4,367,959 km (0.055 R)
• M17: 4,579,640 km (0.032 R)
• M18: 4,981,609 km (0.056 R)
• M19: 5,076,005 km (0.107 R)
• M20: 5,918,989 km (0.095 R)
• M21: 6,187,218 km (0.078 R)
• M22: 7,121,607 km (0.027 R)
• M23: 7,878,572 km (0.116 R)
• M24: 8,062,577 km (0.12 R)
• M25: 8,585,571 km (0.041 R)
• M26: 9,196,529 km (0.064 R)
• M27: 9,273,871 km (0.09 R)
• M28: 9,351,512 km (0.081 R)
• M29: 9,585,633 km (0.098 R)
• M30: 10,379,848 km (0.094 R)
• M31: 11,195,306 km (0.118 R)
• M32: 11,694,365 km (0.111 R)
• M33: 11,946,736 km (0.104 R)
• M34: 12,714,323 km (0.111 R)
• M35: 13,104,175 km (0.095 R)
• M36: 14,567,093 km (0.111 R)
• M37: 15,020,524 km (0.05 R)
• M38: 15,111,779 km (0.072 R)
• M39: 15,249,109 km (0.104 R)
• M40: 15,663,196 km (0.081 R)
• M41: 15,894,923 km (0.054 R)
• M42: 16,408,792 km (0.106 R)
• M43: 17,261,201 km (0.107 R)
• M44: 17,644,770 km (0.12 R)
• M45: 18,128,120 km (0.066 R)
• M46: 18,273,978 km (0.042 R)
• M47: 18,420,285 km (0.056 R)
• M48: 18,959,885 km (0.096 R)
• M49: 19,157,354 km (0.103 R)
• M50: 19,803,916 km (0.082 R)
• M51: 21,580,241 km (0.098 R)
• M52: 21,734,925 km (0.091 R)
• M53: 21,993,430 km (0.115 R)
• M54: 22,149,012 km (0.081 R)
• M55: 22,252,982 km (0.088 R)
• M56: 23,195,748 km (0.077 R)
• M57: 23,354,172 km (0.091 R)
• M58: 23,938,053 km (0.051 R)
• M59: 25,174,330 km (0.095 R)
• M60: 25,500,303 km (0.107 R)
• M61: 26,431,401 km (0.082 R)
• M62: 26,597,005 km (0.081 R)
• M63: 27,429,518 km (0.113 R)
• M64: 27,541,118 km (0.095 R)
• M65: 28,045,412 km (0.104 R)
• M66: 28,326,955 km (0.106 R)
• M67: 29,348,110 km (0.115 R)
• M68: 30,208,148 km (0.111 R)
• M69: 30,438,978 km (0.086 R)
• M70: 31,367,981 km (0.053 R)
• M71: 31,894,565 km (0.077 R)
• M72: 32,070,792 km (0.105 R)
• M73: 33,075,341 km (0.084 R)
• M74: 33,671,040 km (0.094 R)
• M75: 34,270,329 km (0.11 R)
• M76: 35,783,960 km (0.058 R)
• M77: 36,334,181 km (0.066 R)
• M78: 36,887,245 km (0.067 R)
• M79: 37,443,001 km (0.098 R)
• M80: 37,815,051 km (0.097 R)
• M81: 39,127,024 km (0.091 R)
• M82: 39,756,981 km (0.077 R)
• M83: 40,517,386 km (0.084 R)
• M84: 40,899,459 km (0.107 R)
• M85: 41,090,945 km (0.063 R)
• M86: 41,474,663 km (0.104 R)
• M87: 43,411,507 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624.1

Radius: 11.3

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 7.08 AU - 11.3 AU

Year: 9837 Days

Day: 11.6 Hours

Environment

Temp: -161 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 96,336,842 km

• M1: 161,865 km (0.087 R)
• M2: 300,393 km (0.116 R)
• M3: 466,596 km (0.114 R)
• M4: 1,007,392 km (0.098 R)
• M5: 1,158,037 km (0.117 R)
• M6: 1,316,312 km (0.077 R)
• M7: 2,540,770 km (0.103 R)
• M8: 2,644,442 km (0.112 R)
• M9: 3,267,666 km (0.11 R)
• M10: 3,466,332 km (0.089 R)
• M11: 3,935,471 km (0.095 R)
• M12: 4,208,188 km (0.099 R)
• M13: 4,645,014 km (0.032 R)
• M14: 4,804,485 km (0.082 R)
• M15: 5,063,589 km (0.073 R)
• M16: 5,260,908 km (0.109 R)
• M17: 5,494,431 km (0.118 R)
• M18: 5,629,368 km (0.112 R)
• M19: 5,799,610 km (0.117 R)
• M20: 5,937,091 km (0.117 R)
• M21: 6,075,618 km (0.093 R)
• M22: 6,180,337 km (0.071 R)
• M23: 6,426,874 km (0.107 R)
• M24: 6,712,606 km (0.1 R)
• M25: 7,222,585 km (0.095 R)
• M26: 7,745,280 km (0.099 R)
• M27: 8,011,116 km (0.115 R)
• M28: 8,591,107 km (0.075 R)
• M29: 9,750,789 km (0.066 R)
• M30: 10,453,301 km (0.111 R)
• M31: 10,959,091 km (0.088 R)
• M32: 11,863,261 km (0.096 R)
• M33: 13,151,149 km (0.119 R)
• M34: 13,880,588 km (0.094 R)
• M35: 14,810,937 km (0.117 R)
• M36: 19,394,317 km (0.113 R)
• M37: 19,859,566 km (0.042 R)
• M38: 20,537,992 km (0.045 R)
• M39: 21,543,141 km (0.111 R)
• M40: 22,564,296 km (0.069 R)
• M41: 24,208,825 km (0.051 R)
• M42: 24,486,628 km (0.095 R)
• M43: 24,765,479 km (0.118 R)
• M44: 25,551,915 km (0.1 R)
• M45: 26,632,311 km (0.11 R)
• M46: 26,804,348 km (0.11 R)
• M47: 27,785,710 km (0.069 R)
• M48: 28,896,474 km (0.084 R)
• M49: 29,132,241 km (0.104 R)
• M50: 30,920,384 km (0.109 R)
• M51: 31,524,161 km (0.065 R)
• M52: 32,927,987 km (0.045 R)
• M53: 34,852,115 km (0.102 R)
• M54: 36,112,776 km (0.084 R)
• M55: 36,621,110 km (0.082 R)
• M56: 37,773,762 km (0.09 R)
• M57: 38,031,519 km (0.042 R)
• M58: 39,394,355 km (0.057 R)
• M59: 41,568,162 km (0.114 R)
• M60: 42,234,471 km (0.065 R)
• M61: 42,635,992 km (0.076 R)
• M62: 42,770,181 km (0.09 R)
• M63: 43,173,347 km (0.071 R)
• M64: 43,308,135 km (0.073 R)
• M65: 43,712,947 km (0.062 R)
• M66: 43,983,569 km (0.094 R)
• M67: 44,322,708 km (0.117 R)
• M68: 44,594,676 km (0.111 R)
• M69: 45,482,091 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 12.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.6

Radius: 10.9

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 10.82 AU - 13.94 AU

Year: 15381 Days

Day: 13.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 96,336,842 km

• M1: 248,931 km (0.108 R)
• M2: 446,400 km (0.118 R)
• M3: 518,357 km (0.069 R)
• M4: 606,470 km (0.084 R)
• M5: 851,810 km (0.08 R)
• M6: 1,942,977 km (0.076 R)
• M7: 2,069,238 km (0.094 R)
• M8: 2,161,240 km (0.058 R)
• M9: 2,254,590 km (0.047 R)
• M10: 2,503,670 km (0.098 R)
• M11: 2,843,108 km (0.094 R)
• M12: 3,112,683 km (0.084 R)
• M13: 3,721,696 km (0.11 R)
• M14: 4,039,890 km (0.112 R)
• M15: 4,606,268 km (0.09 R)
• M16: 5,917,493 km (0.103 R)
• M17: 6,262,466 km (0.049 R)
• M18: 6,586,794 km (0.087 R)
• M19: 7,139,708 km (0.114 R)
• M20: 7,621,264 km (0.111 R)
• M21: 8,230,725 km (0.117 R)
• M22: 8,319,138 km (0.084 R)
• M23: 8,437,470 km (0.09 R)
• M24: 8,946,551 km (0.058 R)
• M25: 9,037,507 km (0.09 R)
• M26: 9,250,684 km (0.102 R)
• M27: 10,057,465 km (0.07 R)
• M28: 12,204,942 km (0.086 R)
• M29: 13,468,895 km (0.086 R)
• M30: 13,922,775 km (0.078 R)
• M31: 16,415,075 km (0.038 R)
• M32: 17,012,569 km (0.099 R)
• M33: 18,267,097 km (0.089 R)
• M34: 18,343,990 km (0.077 R)
• M35: 19,866,896 km (0.081 R)
• M36: 20,065,114 km (0.076 R)
• M37: 20,783,931 km (0.087 R)
• M38: 20,904,507 km (0.1 R)
• M39: 21,267,880 km (0.067 R)
• M40: 21,511,276 km (0.117 R)
• M41: 21,714,729 km (0.057 R)
• M42: 22,123,730 km (0.065 R)
• M43: 22,452,696 km (0.043 R)
• M44: 22,617,852 km (0.068 R)
• M45: 23,365,841 km (0.099 R)
• M46: 24,164,095 km (0.097 R)
• M47: 25,485,792 km (0.118 R)
• M48: 25,701,213 km (0.027 R)
• M49: 26,047,084 km (0.091 R)
• M50: 28,555,690 km (0.107 R)
• M51: 28,958,857 km (0.119 R)
• M52: 29,273,760 km (0.104 R)
• M53: 29,408,997 km (0.103 R)
• M54: 29,906,858 km (0.12 R)
• M55: 30,544,444 km (0.09 R)

Asteroid Belt

Center: 15.62 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 18.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 434.7

Radius: 4.8

Gravity: 18.87 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 17.78 AU - 19.94 AU

Year: 28921 Days

Day: 21.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 96,336,842 km

• M1: 89,160 km (0.037 R)
• M2: 143,315 km (0.079 R)
• M3: 198,068 km (0.056 R)
• M4: 332,406 km (0.113 R)
• M5: 390,002 km (0.078 R)
• M6: 430,393 km (0.059 R)
• M7: 804,687 km (0.108 R)
• M8: 1,137,393 km (0.038 R)
• M9: 1,741,618 km (0.101 R)
• M10: 1,810,284 km (0.06 R)
• M11: 2,057,569 km (0.037 R)
• M12: 3,930,983 km (0.06 R)
• M13: 4,204,149 km (0.114 R)
• M14: 5,357,100 km (0.107 R)
• M15: 5,558,159 km (0.07 R)
• M16: 5,608,873 km (0.092 R)
• M17: 5,916,147 km (0.055 R)
• M18: 6,071,878 km (0.077 R)
• M19: 7,476,902 km (0.101 R)
• M20: 7,871,690 km (0.109 R)
• M21: 8,740,405 km (0.113 R)
• M22: 9,578,153 km (0.063 R)
• M23: 9,638,890 km (0.049 R)
• M24: 10,006,602 km (0.092 R)
• M25: 10,130,169 km (0.074 R)
• M26: 11,200,692 km (0.097 R)
• M27: 13,243,451 km (0.118 R)
• M28: 13,788,885 km (0.089 R)
• M29: 13,857,550 km (0.107 R)
• M30: 13,926,365 km (0.059 R)
• M31: 14,133,558 km (0.052 R)
• M32: 15,397,660 km (0.064 R)
• M33: 17,138,530 km (0.07 R)
• M34: 17,956,980 km (0.064 R)
• M35: 18,182,424 km (0.081 R)
• M36: 23,783,817 km (0.12 R)
• M37: 23,866,246 km (0.108 R)
• M38: 24,362,761 km (0.114 R)
• M39: 24,445,788 km (0.119 R)
• M40: 25,113,892 km (0.056 R)
• M41: 25,197,817 km (0.057 R)
• M42: 25,957,475 km (0.055 R)
• M43: 27,240,127 km (0.088 R)
• M44: 28,280,879 km (0.103 R)
• M45: 28,455,609 km (0.102 R)
• M46: 29,955,478 km (0.025 R)
• M47: 31,119,499 km (0.11 R)
• M48: 31,934,059 km (0.09 R)
• M49: 32,116,120 km (0.11 R)
• M50: 35,261,714 km (0.083 R)
• M51: 36,110,682 km (0.115 R)
• M52: 37,348,904 km (0.077 R)
• M53: 37,636,580 km (0.077 R)
• M54: 38,310,668 km (0.046 R)
• M55: 38,697,828 km (0.089 R)
• M56: 41,244,881 km (0.093 R)
• M57: 42,238,809 km (0.118 R)
• M58: 42,438,522 km (0.107 R)
• M59: 43,643,533 km (0.047 R)
• M60: 44,656,311 km (0.11 R)
• M61: 44,961,640 km (0.078 R)
• M62: 45,676,867 km (0.103 R)
• M63: 46,498,758 km (0.092 R)
• M64: 47,740,720 km (0.118 R)
• M65: 49,729,474 km (0.045 R)
• M66: 50,575,001 km (0.1 R)
• M67: 52,816,725 km (0.079 R)
• M68: 54,112,243 km (0.062 R)
• M69: 54,763,891 km (0.085 R)
• M70: 55,418,082 km (0.063 R)
• M71: 58,172,030 km (0.101 R)
• M72: 61,082,905 km (0.026 R)
• M73: 62,101,517 km (0.112 R)
• M74: 62,215,062 km (0.119 R)
• M75: 63,697,128 km (0.08 R)
• M76: 65,537,182 km (0.105 R)
• M77: 67,744,797 km (0.045 R)
• M78: 67,978,619 km (0.102 R)
• M79: 68,681,579 km (0.101 R)
• M80: 69,504,816 km (0.092 R)
• M81: 71,042,383 km (0.104 R)
• M82: 71,279,945 km (0.112 R)
• M83: 71,517,656 km (0.037 R)
• M84: 72,352,113 km (0.04 R)
• M85: 74,633,031 km (0.115 R)
• M86: 74,874,482 km (0.1 R)
• M87: 76,815,515 km (0.116 R)
• M88: 76,937,437 km (0.071 R)
• M89: 78,650,333 km (0.119 R)
• M90: 80,994,980 km (0.115 R)
• M91: 81,118,997 km (0.078 R)
• M92: 82,487,518 km (0.107 R)
• M93: 82,862,111 km (0.061 R)
• M94: 83,112,239 km (0.108 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 594.2

Radius: 5

Gravity: 23.77 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 16.64 AU - 22.52 AU

Year: 30593 Days

Day: 20.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 96,336,842 km

• M1: 355,145 km (0.087 R)
• M2: 1,270,236 km (0.113 R)
• M3: 1,548,488 km (0.036 R)
• M4: 2,405,983 km (0.081 R)
• M5: 2,532,692 km (0.091 R)
• M6: 3,479,198 km (0.069 R)
• M7: 3,574,492 km (0.102 R)
• M8: 4,890,803 km (0.12 R)
• M9: 6,750,903 km (0.077 R)
• M10: 7,972,669 km (0.093 R)
• M11: 8,161,761 km (0.107 R)
• M12: 8,802,788 km (0.046 R)
• M13: 8,998,162 km (0.09 R)
• M14: 10,681,737 km (0.106 R)
• M15: 10,820,564 km (0.048 R)
• M16: 12,168,740 km (0.112 R)
• M17: 12,899,525 km (0.1 R)
• M18: 13,870,415 km (0.078 R)
• M19: 14,097,804 km (0.079 R)
• M20: 15,331,239 km (0.076 R)
• M21: 15,802,621 km (0.079 R)
• M22: 16,518,746 km (0.073 R)
• M23: 16,598,931 km (0.082 R)
• M24: 17,817,555 km (0.066 R)
• M25: 17,982,262 km (0.115 R)
• M26: 18,729,354 km (0.104 R)
• M27: 20,339,775 km (0.115 R)
• M28: 21,117,983 km (0.066 R)
• M29: 21,729,988 km (0.093 R)
• M30: 23,240,328 km (0.071 R)
• M31: 23,420,295 km (0.086 R)
• M32: 24,876,032 km (0.085 R)
• M33: 24,968,034 km (0.094 R)
• M34: 26,360,940 km (0.115 R)
• M35: 26,642,483 km (0.114 R)
• M36: 26,736,580 km (0.118 R)
• M37: 29,805,281 km (0.037 R)
• M38: 30,000,806 km (0.037 R)
• M39: 30,786,793 km (0.073 R)
• M40: 31,480,179 km (0.08 R)
• M41: 31,679,294 km (0.033 R)
• M42: 31,778,926 km (0.1 R)
• M43: 31,878,857 km (0.098 R)
• M44: 33,692,732 km (0.045 R)
• M45: 33,794,458 km (0.042 R)
• M46: 33,896,334 km (0.09 R)
• M47: 34,202,561 km (0.087 R)
• M48: 34,407,211 km (0.098 R)
• M49: 34,714,934 km (0.116 R)
• M50: 35,023,554 km (0.071 R)
• M51: 35,747,309 km (0.067 R)
• M52: 36,894,425 km (0.1 R)
• M53: 39,010,936 km (0.09 R)
• M54: 43,360,344 km (0.081 R)
• M55: 44,248,507 km (0.091 R)
• M56: 47,289,981 km (0.116 R)
• M57: 49,586,009 km (0.109 R)
• M58: 53,216,002 km (0.108 R)
• M59: 61,720,940 km (0.095 R)
• M60: 64,227,303 km (0.094 R)
• M61: 64,479,674 km (0.097 R)
• M62: 65,492,901 km (0.057 R)
• M63: 65,746,918 km (0.116 R)
• M64: 66,256,149 km (0.082 R)
• M65: 67,919,976 km (0.058 R)
• M66: 68,950,706 km (0.098 R)
• M67: 70,897,273 km (0.107 R)
• M68: 74,313,789 km (0.104 R)
• M69: 76,309,126 km (0.109 R)
• M70: 76,710,347 km (0.075 R)
• M71: 77,514,735 km (0.093 R)
• M72: 78,052,689 km (0.105 R)
• M73: 83,223,839 km (0.074 R)
• M74: 85,572,824 km (0.06 R)
• M75: 85,850,628 km (0.112 R)
• M76: 88,925,911 km (0.109 R)
• M77: 93,177,333 km (0.066 R)

Kuiper Belt

Range: 31.1 - 47.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 359 - 13,774 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit