🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.54

Radius: 1.66

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.7 AU - 0.9 AU

Year: 254 Days

Day: 41.7 Hours

Environment

Temp: 158 °C

Axial Tilt: 25.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 80,710,849 km

• M1: 547,977 km (0.097 R)

Asteroid Belt

Center: 1.09 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 2 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.35 AU - 1.39 AU

Year: 569 Days

Day: 35.5 Hours

Environment

Temp: 8 °C

Axial Tilt: 10.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 3.7 AU - 3.98 AU

Year: 2670 Days

Day: 28.7 Hours

Environment

Temp: -110 °C

Axial Tilt: 42.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 80,710,849 km

• M1: 266,135 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 713.5

Radius: 14.8

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 6.36 AU - 7.98 AU

Year: 6811 Days

Day: 9.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 80,710,849 km

• M1: 210,783 km (0.11 R)
• M2: 378,483 km (0.097 R)
• M3: 693,386 km (0.096 R)
• M4: 983,756 km (0.071 R)
• M5: 1,177,784 km (0.066 R)
• M6: 1,439,431 km (0.114 R)
• M7: 1,958,685 km (0.06 R)
• M8: 2,424,084 km (0.1 R)
• M9: 2,784,465 km (0.085 R)
• M10: 2,900,703 km (0.109 R)
• M11: 2,994,949 km (0.107 R)
• M12: 3,632,835 km (0.118 R)
• M13: 4,072,802 km (0.113 R)
• M14: 4,312,757 km (0.107 R)
• M15: 4,420,916 km (0.118 R)
• M16: 4,667,603 km (0.106 R)
• M17: 4,890,803 km (0.1 R)
• M18: 5,203,612 km (0.076 R)
• M19: 5,848,978 km (0.057 R)
• M20: 6,029,393 km (0.058 R)
• M21: 6,365,090 km (0.101 R)
• M22: 6,896,163 km (0.07 R)
• M23: 7,506,522 km (0.085 R)
• M24: 8,336,341 km (0.056 R)
• M25: 8,710,635 km (0.106 R)
• M26: 9,230,189 km (0.079 R)
• M27: 9,546,738 km (0.074 R)
• M28: 9,759,765 km (0.055 R)
• M29: 9,938,535 km (0.098 R)
• M30: 10,627,882 km (0.116 R)
• M31: 11,295,088 km (0.078 R)
• M32: 11,520,532 km (0.096 R)
• M33: 11,633,927 km (0.073 R)
• M34: 12,014,205 km (0.099 R)
• M35: 12,709,237 km (0.056 R)
• M36: 13,536,663 km (0.115 R)
• M37: 14,138,345 km (0.064 R)
• M38: 14,626,034 km (0.107 R)
• M39: 14,830,983 km (0.078 R)
• M40: 15,243,574 km (0.107 R)
• M41: 15,368,040 km (0.095 R)
• M42: 15,534,542 km (0.06 R)
• M43: 16,291,507 km (0.078 R)
• M44: 16,418,815 km (0.114 R)
• M45: 18,192,148 km (0.111 R)
• M46: 19,889,486 km (0.101 R)
• M47: 20,207,680 km (0.115 R)
• M48: 20,390,339 km (0.053 R)
• M49: 20,619,224 km (0.12 R)
• M50: 21,172,437 km (0.115 R)
• M51: 21,311,413 km (0.068 R)
• M52: 22,529,290 km (0.106 R)
• M53: 22,860,948 km (0.094 R)
• M54: 22,956,092 km (0.072 R)
• M55: 24,155,718 km (0.119 R)
• M56: 24,398,066 km (0.099 R)
• M57: 25,081,130 km (0.065 R)
• M58: 26,415,992 km (0.097 R)
• M59: 26,816,017 km (0.104 R)
• M60: 27,571,336 km (0.094 R)
• M61: 29,412,737 km (0.119 R)
• M62: 30,035,363 km (0.119 R)
• M63: 30,243,753 km (0.089 R)
• M64: 30,505,100 km (0.111 R)
• M65: 30,767,196 km (0.081 R)
• M66: 30,977,381 km (0.106 R)
• M67: 31,135,356 km (0.099 R)
• M68: 32,890,588 km (0.067 R)
• M69: 34,187,153 km (0.1 R)
• M70: 35,115,707 km (0.111 R)
• M71: 35,390,518 km (0.069 R)
• M72: 35,831,532 km (0.09 R)
• M73: 36,607,646 km (0.11 R)
• M74: 37,053,597 km (0.11 R)
• M75: 37,277,246 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.4

Radius: 12.6

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 8.2 AU - 10.6 AU

Year: 10224 Days

Day: 5.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 80,710,849 km

• M1: 176,077 km (0.058 R)
• M2: 257,608 km (0.056 R)
• M3: 516,262 km (0.072 R)
• M4: 595,848 km (0.054 R)
• M5: 1,101,788 km (0.062 R)
• M6: 1,360,443 km (0.05 R)
• M7: 1,764,357 km (0.094 R)
• M8: 1,849,628 km (0.088 R)
• M9: 1,936,395 km (0.12 R)
• M10: 2,415,258 km (0.084 R)
• M11: 2,705,328 km (0.106 R)
• M12: 3,084,110 km (0.086 R)
• M13: 3,319,726 km (0.061 R)
• M14: 3,780,787 km (0.1 R)
• M15: 3,976,760 km (0.117 R)
• M16: 4,204,747 km (0.081 R)
• M17: 4,320,387 km (0.098 R)
• M18: 4,437,073 km (0.096 R)
• M19: 4,614,197 km (0.026 R)
• M20: 4,823,783 km (0.118 R)
• M21: 5,283,647 km (0.047 R)
• M22: 5,661,831 km (0.087 R)
• M23: 5,789,886 km (0.111 R)
• M24: 5,886,527 km (0.113 R)
• M25: 6,344,745 km (0.112 R)
• M26: 6,511,247 km (0.063 R)
• M27: 8,510,024 km (0.115 R)
• M28: 8,841,982 km (0.102 R)
• M29: 9,328,923 km (0.075 R)
• M30: 9,518,464 km (0.047 R)
• M31: 10,485,764 km (0.062 R)
• M32: 11,041,220 km (0.051 R)
• M33: 11,241,981 km (0.086 R)
• M34: 11,322,614 km (0.113 R)
• M35: 12,429,788 km (0.11 R)
• M36: 12,764,438 km (0.119 R)
• M37: 12,932,886 km (0.113 R)
• M38: 13,571,369 km (0.055 R)
• M39: 13,786,491 km (0.101 R)
• M40: 14,132,960 km (0.109 R)
• M41: 14,263,559 km (0.12 R)
• M42: 14,790,442 km (0.062 R)
• M43: 14,923,136 km (0.1 R)
• M44: 15,592,586 km (0.117 R)
• M45: 15,817,880 km (0.09 R)
• M46: 16,089,700 km (0.074 R)
• M47: 17,285,585 km (0.045 R)
• M48: 17,518,808 km (0.034 R)
• M49: 17,659,281 km (0.043 R)
• M50: 19,084,350 km (0.073 R)
• M51: 19,519,081 km (0.111 R)
• M52: 20,054,941 km (0.11 R)
• M53: 20,644,955 km (0.117 R)
• M54: 21,041,539 km (0.098 R)
• M55: 21,190,838 km (0.092 R)
• M56: 21,290,619 km (0.109 R)
• M57: 21,490,632 km (0.114 R)
• M58: 21,942,866 km (0.115 R)
• M59: 22,043,845 km (0.032 R)
• M60: 22,601,845 km (0.088 R)
• M61: 23,113,021 km (0.12 R)
• M62: 23,267,256 km (0.036 R)
• M63: 23,421,641 km (0.06 R)
• M64: 23,887,190 km (0.116 R)
• M65: 24,355,730 km (0.077 R)
• M66: 26,259,961 km (0.068 R)
• M67: 27,938,001 km (0.034 R)
• M68: 28,047,357 km (0.1 R)
• M69: 28,486,576 km (0.057 R)
• M70: 29,094,243 km (0.069 R)
• M71: 29,594,648 km (0.059 R)
• M72: 30,153,994 km (0.088 R)
• M73: 32,771,358 km (0.034 R)
• M74: 33,698,865 km (0.104 R)
• M75: 33,931,939 km (0.058 R)
• M76: 34,165,760 km (0.077 R)
• M77: 34,634,899 km (0.096 R)
• M78: 35,106,132 km (0.062 R)
• M79: 35,401,588 km (0.101 R)
• M80: 35,698,091 km (0.106 R)
• M81: 35,935,802 km (0.104 R)
• M82: 36,592,238 km (0.117 R)
• M83: 37,192,574 km (0.116 R)
• M84: 37,373,288 km (0.104 R)
• M85: 38,341,934 km (0.095 R)
• M86: 40,427,927 km (0.065 R)
• M87: 41,797,196 km (0.027 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.3

Radius: 8.2

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 10.09 AU - 11.65 AU

Year: 12714 Days

Day: 11.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 80,710,849 km

• M1: 128,654 km (0.058 R)
• M2: 184,753 km (0.045 R)
• M3: 286,480 km (0.112 R)
• M4: 389,702 km (0.077 R)
• M5: 458,667 km (0.103 R)
• M6: 1,093,860 km (0.09 R)
• M7: 1,213,239 km (0.103 R)
• M8: 2,080,009 km (0.104 R)
• M9: 2,186,223 km (0.067 R)
• M10: 2,674,511 km (0.113 R)
• M11: 3,368,645 km (0.099 R)
• M12: 3,518,991 km (0.041 R)
• M13: 3,774,653 km (0.095 R)
• M14: 3,826,414 km (0.116 R)
• M15: 4,142,515 km (0.029 R)
• M16: 4,196,071 km (0.081 R)
• M17: 4,467,142 km (0.114 R)
• M18: 4,772,022 km (0.079 R)
• M19: 5,083,485 km (0.096 R)
• M20: 5,489,643 km (0.107 R)
• M21: 5,666,917 km (0.065 R)
• M22: 5,966,711 km (0.072 R)
• M23: 6,675,506 km (0.108 R)
• M24: 6,738,486 km (0.101 R)
• M25: 7,055,933 km (0.087 R)
• M26: 7,152,125 km (0.057 R)
• M27: 7,216,601 km (0.072 R)
• M28: 8,004,234 km (0.083 R)
• M29: 8,957,322 km (0.042 R)
• M30: 9,201,167 km (0.107 R)
• M31: 10,526,305 km (0.091 R)
• M32: 12,293,953 km (0.096 R)
• M33: 12,409,891 km (0.099 R)
• M34: 14,313,674 km (0.05 R)
• M35: 15,092,032 km (0.072 R)
• M36: 16,306,617 km (0.117 R)
• M37: 16,391,439 km (0.034 R)
• M38: 16,775,456 km (0.058 R)
• M39: 17,205,550 km (0.098 R)
• M40: 19,051,139 km (0.075 R)
• M41: 19,140,599 km (0.101 R)
• M42: 20,133,929 km (0.117 R)
• M43: 20,407,693 km (0.081 R)
• M44: 20,636,727 km (0.08 R)
• M45: 21,005,037 km (0.103 R)
• M46: 21,375,591 km (0.07 R)
• M47: 21,608,216 km (0.071 R)
• M48: 21,794,914 km (0.116 R)
• M49: 23,117,060 km (0.103 R)
• M50: 23,884,198 km (0.033 R)
• M51: 26,434,542 km (0.1 R)
• M52: 27,995,596 km (0.083 R)
• M53: 28,915,772 km (0.094 R)
• M54: 29,070,008 km (0.112 R)
• M55: 29,327,915 km (0.054 R)
• M56: 30,366,573 km (0.114 R)
• M57: 30,471,141 km (0.063 R)
• M58: 31,470,306 km (0.08 R)
• M59: 32,053,588 km (0.102 R)
• M60: 32,160,101 km (0.097 R)
• M61: 32,426,685 km (0.097 R)
• M62: 34,695,187 km (0.111 R)
• M63: 35,242,865 km (0.1 R)
• M64: 36,513,250 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 12.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872

Radius: 14

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 12.09 AU - 13.69 AU

Year: 16418 Days

Day: 6.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 97.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 80,710,849 km

• M1: 729,589 km (0.087 R)
• M2: 885,619 km (0.091 R)
• M3: 1,104,331 km (0.111 R)
• M4: 1,775,577 km (0.069 R)
• M5: 2,353,025 km (0.088 R)
• M6: 2,769,505 km (0.106 R)
• M7: 2,913,718 km (0.097 R)
• M8: 3,134,823 km (0.043 R)
• M9: 3,323,317 km (0.065 R)
• M10: 3,476,954 km (0.082 R)
• M11: 3,791,408 km (0.098 R)
• M12: 4,033,308 km (0.109 R)
• M13: 4,406,106 km (0.064 R)
• M14: 4,920,424 km (0.079 R)
• M15: 5,184,913 km (0.039 R)
• M16: 5,318,803 km (0.09 R)
• M17: 5,408,861 km (0.072 R)
• M18: 6,147,276 km (0.116 R)
• M19: 6,384,538 km (0.074 R)
• M20: 7,065,208 km (0.072 R)
• M21: 7,667,190 km (0.056 R)
• M22: 7,871,541 km (0.045 R)
• M23: 8,760,152 km (0.064 R)
• M24: 9,135,493 km (0.078 R)
• M25: 9,680,628 km (0.11 R)
• M26: 10,012,885 km (0.033 R)
• M27: 10,124,485 km (0.048 R)
• M28: 12,985,694 km (0.107 R)
• M29: 13,722,313 km (0.066 R)
• M30: 14,221,073 km (0.117 R)
• M31: 14,598,957 km (0.032 R)
• M32: 15,493,702 km (0.109 R)
• M33: 17,269,129 km (0.101 R)
• M34: 17,672,445 km (0.026 R)
• M35: 18,900,943 km (0.037 R)
• M36: 21,656,087 km (0.089 R)
• M37: 22,018,413 km (0.114 R)
• M38: 23,859,664 km (0.101 R)
• M39: 27,062,704 km (0.087 R)
• M40: 28,476,254 km (0.08 R)
• M41: 29,192,080 km (0.1 R)
• M42: 29,592,404 km (0.119 R)
• M43: 30,155,789 km (0.117 R)
• M44: 30,317,355 km (0.111 R)
• M45: 32,361,909 km (0.108 R)
• M46: 32,859,322 km (0.104 R)
• M47: 33,945,552 km (0.056 R)
• M48: 34,873,807 km (0.085 R)
• M49: 36,324,757 km (0.119 R)
• M50: 37,014,552 km (0.085 R)
• M51: 37,360,871 km (0.086 R)
• M52: 38,231,830 km (0.05 R)
• M53: 38,319,195 km (0.096 R)
• M54: 39,109,371 km (0.039 R)
• M55: 40,616,420 km (0.082 R)
• M56: 41,242,487 km (0.058 R)
• M57: 44,053,431 km (0.07 R)
• M58: 44,512,547 km (0.098 R)
• M59: 45,899,469 km (0.086 R)
• M60: 46,551,566 km (0.095 R)
• M61: 47,113,007 km (0.119 R)
• M62: 50,240,500 km (0.086 R)
• M63: 51,490,989 km (0.058 R)
• M64: 52,459,785 km (0.116 R)
• M65: 53,434,714 km (0.102 R)
• M66: 54,022,484 km (0.12 R)
• M67: 55,006,838 km (0.099 R)
• M68: 57,493,753 km (0.095 R)
• M69: 59,205,751 km (0.114 R)
• M70: 59,307,029 km (0.119 R)
• M71: 60,118,896 km (0.101 R)
• M72: 60,526,251 km (0.049 R)
• M73: 61,036,679 km (0.058 R)
• M74: 63,921,525 km (0.116 R)
• M75: 64,233,137 km (0.063 R)
• M76: 65,485,122 km (0.103 R)
• M77: 66,639,867 km (0.077 R)
• M78: 66,850,501 km (0.119 R)
• M79: 67,589,515 km (0.04 R)
• M80: 71,217,862 km (0.111 R)
• M81: 71,540,993 km (0.088 R)
• M82: 71,648,853 km (0.036 R)
• M83: 72,080,742 km (0.098 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 475

Radius: 5.3

Gravity: 16.91 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 14.55 AU - 20.69 AU

Year: 26239 Days

Day: 17 Hours

Environment

Temp: -195 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (98)

Outer Limit: 80,710,849 km

• M1: 260,599 km (0.097 R)
• M2: 293,960 km (0.063 R)
• M3: 423,661 km (0.098 R)
• M4: 464,202 km (0.096 R)
• M5: 835,803 km (0.093 R)
• M6: 1,049,878 km (0.119 R)
• M7: 1,280,857 km (0.076 R)
• M8: 1,464,563 km (0.099 R)
• M9: 1,959,583 km (0.077 R)
• M10: 2,135,360 km (0.116 R)
• M11: 2,243,370 km (0.109 R)
• M12: 2,353,025 km (0.11 R)
• M13: 2,427,225 km (0.093 R)
• M14: 2,616,168 km (0.116 R)
• M15: 3,210,969 km (0.107 R)
• M16: 3,629,992 km (0.113 R)
• M17: 4,066,070 km (0.079 R)
• M18: 4,564,829 km (0.112 R)
• M19: 5,227,249 km (0.042 R)
• M20: 5,275,719 km (0.055 R)
• M21: 5,520,161 km (0.036 R)
• M22: 5,969,703 km (0.077 R)
• M23: 6,122,143 km (0.084 R)
• M24: 6,173,306 km (0.075 R)
• M25: 7,063,712 km (0.098 R)
• M26: 7,716,109 km (0.1 R)
• M27: 8,218,009 km (0.109 R)
• M28: 8,387,653 km (0.103 R)
• M29: 8,615,641 km (0.085 R)
• M30: 8,787,977 km (0.062 R)
• M31: 9,194,435 km (0.12 R)
• M32: 9,311,719 km (0.062 R)
• M33: 9,905,623 km (0.116 R)
• M34: 10,881,001 km (0.112 R)
• M35: 12,660,169 km (0.078 R)
• M36: 12,921,666 km (0.065 R)
• M37: 14,595,815 km (0.094 R)
• M38: 15,702,540 km (0.111 R)
• M39: 17,412,743 km (0.09 R)
• M40: 19,782,972 km (0.111 R)
• M41: 20,774,507 km (0.113 R)
• M42: 23,603,253 km (0.049 R)
• M43: 24,248,020 km (0.029 R)
• M44: 24,329,102 km (0.037 R)
• M45: 24,410,184 km (0.071 R)
• M46: 24,572,647 km (0.082 R)
• M47: 25,968,096 km (0.114 R)
• M48: 26,217,027 km (0.106 R)
• M49: 27,896,712 km (0.058 R)
• M50: 28,066,505 km (0.109 R)
• M51: 28,578,130 km (0.11 R)
• M52: 29,697,421 km (0.034 R)
• M53: 30,480,566 km (0.084 R)
• M54: 31,535,381 km (0.083 R)
• M55: 31,623,793 km (0.041 R)
• M56: 32,423,394 km (0.082 R)
• M57: 34,406,014 km (0.109 R)
• M58: 35,045,096 km (0.083 R)
• M59: 36,799,131 km (0.106 R)
• M60: 36,985,530 km (0.115 R)
• M61: 37,827,766 km (0.057 R)
• M62: 39,817,418 km (0.102 R)
• M63: 39,913,011 km (0.113 R)
• M64: 40,200,239 km (0.116 R)
• M65: 40,680,598 km (0.115 R)
• M66: 41,162,752 km (0.114 R)
• M67: 41,938,117 km (0.045 R)
• M68: 42,327,670 km (0.057 R)
• M69: 43,306,639 km (0.058 R)
• M70: 44,689,821 km (0.08 R)
• M71: 44,888,487 km (0.088 R)
• M72: 45,187,234 km (0.044 R)
• M73: 45,287,015 km (0.118 R)
• M74: 47,296,564 km (0.1 R)
• M75: 47,600,546 km (0.119 R)
• M76: 47,803,551 km (0.025 R)
• M77: 48,312,333 km (0.067 R)
• M78: 48,822,761 km (0.12 R)
• M79: 51,298,157 km (0.096 R)
• M80: 52,865,943 km (0.055 R)
• M81: 52,970,960 km (0.081 R)
• M82: 53,708,478 km (0.11 R)
• M83: 54,449,287 km (0.094 R)
• M84: 55,193,536 km (0.045 R)
• M85: 55,941,226 km (0.094 R)
• M86: 57,554,490 km (0.11 R)
• M87: 59,073,955 km (0.068 R)
• M88: 60,386,826 km (0.117 R)
• M89: 60,606,585 km (0.044 R)
• M90: 62,041,379 km (0.081 R)
• M91: 63,487,392 km (0.106 R)
• M92: 67,093,747 km (0.114 R)
• M93: 71,345,768 km (0.107 R)
• M94: 72,043,343 km (0.105 R)
• M95: 72,860,147 km (0.097 R)
• M96: 76,395,444 km (0.063 R)
• M97: 76,633,155 km (0.027 R)
• M98: 79,263,534 km (0.118 R)

Kuiper Belt

Range: 30.9 - 49.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 206 - 17,396 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit