🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.4

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.57 AU - 0.59 AU

Year: 167 Days

Day: 16.2 Hours

Environment

Temp: 132 °C

Axial Tilt: 5.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.67 AU - 0.77 AU

Year: 231 Days

Day: 29.2 Hours

Environment

Temp: 167 °C

Axial Tilt: 39.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 81,070,318 km

• M1: 249,529 km (0.107 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.69 AU - 0.87 AU

Year: 261 Days

Day: 40.8 Hours

Environment

Temp: 104 °C

Axial Tilt: 8.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.98

Radius: 0.99

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.12 AU - 1.46 AU

Year: 555 Days

Day: 30.7 Hours

Environment

Temp: -36 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.1 AU - 3.28 AU

Year: 2158 Days

Day: 35.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 26.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 81,070,318 km

• M1: 176,226 km (0.065 R)
• M2: 699,819 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 969.6

Radius: 9.3

Gravity: 11.21 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 5.01 AU - 6.43 AU

Year: 5181 Days

Day: 8.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 81,070,318 km

• M1: 124,465 km (0.104 R)
• M2: 199,264 km (0.072 R)
• M3: 372,050 km (0.047 R)
• M4: 586,573 km (0.084 R)
• M5: 649,853 km (0.067 R)
• M6: 898,634 km (0.12 R)
• M7: 988,393 km (0.032 R)
• M8: 1,049,878 km (0.085 R)
• M9: 1,209,948 km (0.048 R)
• M10: 1,343,838 km (0.097 R)
• M11: 1,412,653 km (0.097 R)
• M12: 1,536,071 km (0.104 R)
• M13: 1,663,229 km (0.089 R)
• M14: 1,947,764 km (0.076 R)
• M15: 2,085,843 km (0.026 R)
• M16: 2,392,818 km (0.106 R)
• M17: 2,846,847 km (0.083 R)
• M18: 2,936,307 km (0.104 R)
• M19: 3,164,294 km (0.089 R)
• M20: 3,421,902 km (0.117 R)
• M21: 3,589,302 km (0.086 R)
• M22: 4,108,107 km (0.09 R)
• M23: 4,389,202 km (0.078 R)
• M24: 5,463,763 km (0.062 R)
• M25: 5,944,271 km (0.099 R)
• M26: 6,088,185 km (0.077 R)
• M27: 6,764,965 km (0.062 R)
• M28: 7,127,591 km (0.034 R)
• M29: 7,342,114 km (0.104 R)
• M30: 7,935,120 km (0.074 R)
• M31: 8,093,694 km (0.089 R)
• M32: 9,001,304 km (0.069 R)
• M33: 10,111,918 km (0.088 R)
• M34: 10,876,214 km (0.11 R)
• M35: 11,229,714 km (0.098 R)
• M36: 12,166,645 km (0.087 R)
• M37: 12,276,300 km (0.115 R)
• M38: 12,755,612 km (0.109 R)
• M39: 13,016,212 km (0.094 R)
• M40: 13,128,410 km (0.104 R)
• M41: 13,353,854 km (0.079 R)
• M42: 13,961,371 km (0.065 R)
• M43: 14,076,262 km (0.088 R)
• M44: 14,306,942 km (0.051 R)
• M45: 14,655,505 km (0.085 R)
• M46: 14,889,326 km (0.117 R)
• M47: 15,045,955 km (0.11 R)
• M48: 16,601,325 km (0.08 R)
• M49: 17,131,200 km (0.096 R)
• M50: 19,177,549 km (0.062 R)
• M51: 19,776,390 km (0.113 R)
• M52: 19,991,661 km (0.085 R)
• M53: 20,251,213 km (0.103 R)
• M54: 20,337,831 km (0.116 R)
• M55: 20,424,747 km (0.082 R)
• M56: 20,511,663 km (0.028 R)
• M57: 21,256,062 km (0.098 R)
• M58: 21,344,175 km (0.087 R)
• M59: 21,609,263 km (0.117 R)
• M60: 22,501,165 km (0.12 R)
• M61: 22,771,040 km (0.082 R)
• M62: 22,861,247 km (0.083 R)
• M63: 23,678,351 km (0.111 R)
• M64: 23,769,755 km (0.103 R)
• M65: 24,044,567 km (0.053 R)
• M66: 24,228,422 km (0.037 R)
• M67: 24,505,029 km (0.104 R)
• M68: 24,690,081 km (0.038 R)
• M69: 24,968,483 km (0.088 R)
• M70: 25,341,281 km (0.088 R)
• M71: 25,668,900 km (0.088 R)
• M72: 25,856,795 km (0.067 R)
• M73: 26,045,139 km (0.094 R)
• M74: 26,233,931 km (0.093 R)
• M75: 26,755,579 km (0.111 R)
• M76: 27,760,727 km (0.114 R)
• M77: 27,905,388 km (0.113 R)
• M78: 28,778,292 km (0.067 R)
• M79: 29,169,191 km (0.069 R)
• M80: 29,906,709 km (0.107 R)
• M81: 30,253,028 km (0.087 R)
• M82: 31,350,179 km (0.076 R)
• M83: 32,968,977 km (0.086 R)
• M84: 33,943,009 km (0.097 R)
• M85: 34,304,288 km (0.09 R)
• M86: 34,459,421 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.4

Radius: 8.7

Gravity: 5.37 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 5.02 AU - 7.1 AU

Year: 5650 Days

Day: 14.5 Hours

Environment

Temp: -163 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 81,070,318 km

• M1: 139,874 km (0.113 R)
• M2: 303,384 km (0.072 R)
• M3: 423,960 km (0.102 R)
• M4: 594,352 km (0.113 R)
• M5: 693,985 km (0.089 R)
• M6: 898,335 km (0.055 R)
• M7: 1,094,907 km (0.06 R)
• M8: 1,149,660 km (0.108 R)
• M9: 1,219,671 km (0.095 R)
• M10: 1,276,519 km (0.041 R)
• M11: 1,378,544 km (0.118 R)
• M12: 1,559,857 km (0.067 R)
• M13: 1,685,220 km (0.084 R)
• M14: 1,781,411 km (0.105 R)
• M15: 2,047,097 km (0.095 R)
• M16: 2,115,463 km (0.074 R)
• M17: 2,379,055 km (0.119 R)
• M18: 2,579,067 km (0.105 R)
• M19: 2,879,909 km (0.104 R)
• M20: 3,132,579 km (0.114 R)
• M21: 3,251,659 km (0.105 R)
• M22: 4,105,564 km (0.099 R)
• M23: 4,412,389 km (0.076 R)
• M24: 5,258,814 km (0.086 R)
• M25: 5,376,996 km (0.106 R)
• M26: 5,448,354 km (0.058 R)
• M27: 5,956,838 km (0.087 R)
• M28: 6,354,319 km (0.087 R)
• M29: 6,940,892 km (0.101 R)
• M30: 7,122,803 km (0.109 R)
• M31: 7,201,342 km (0.114 R)
• M32: 7,678,260 km (0.089 R)
• M33: 7,812,599 km (0.1 R)
• M34: 8,220,104 km (0.119 R)
• M35: 8,495,663 km (0.091 R)
• M36: 8,551,164 km (0.086 R)
• M37: 8,886,712 km (0.103 R)
• M38: 9,715,035 km (0.096 R)
• M39: 9,889,616 km (0.059 R)
• M40: 10,271,240 km (0.059 R)
• M41: 10,958,194 km (0.066 R)
• M42: 11,079,218 km (0.064 R)
• M43: 11,721,891 km (0.118 R)
• M44: 12,032,007 km (0.098 R)
• M45: 12,692,332 km (0.102 R)
• M46: 12,787,626 km (0.07 R)
• M47: 12,915,083 km (0.041 R)
• M48: 13,042,990 km (0.105 R)
• M49: 13,171,195 km (0.085 R)
• M50: 14,245,457 km (0.057 R)
• M51: 14,876,760 km (0.082 R)
• M52: 15,178,948 km (0.081 R)
• M53: 15,381,503 km (0.064 R)
• M54: 15,823,565 km (0.039 R)
• M55: 16,132,036 km (0.091 R)
• M56: 16,650,542 km (0.065 R)
• M57: 17,350,361 km (0.041 R)
• M58: 17,420,971 km (0.11 R)
• M59: 17,491,581 km (0.063 R)
• M60: 17,562,341 km (0.106 R)
• M61: 17,668,556 km (0.114 R)
• M62: 18,562,253 km (0.06 R)
• M63: 19,874,825 km (0.076 R)
• M64: 20,096,529 km (0.096 R)
• M65: 20,207,680 km (0.099 R)
• M66: 20,803,977 km (0.054 R)
• M67: 20,878,926 km (0.114 R)
• M68: 20,991,424 km (0.045 R)
• M69: 21,292,714 km (0.061 R)
• M70: 21,785,190 km (0.066 R)
• M71: 22,588,680 km (0.114 R)
• M72: 24,303,520 km (0.096 R)
• M73: 25,176,574 km (0.078 R)
• M74: 25,536,656 km (0.084 R)
• M75: 25,737,416 km (0.061 R)
• M76: 25,979,166 km (0.038 R)
• M77: 26,505,302 km (0.067 R)
• M78: 26,667,915 km (0.115 R)
• M79: 27,116,858 km (0.118 R)
• M80: 27,485,916 km (0.069 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715

Radius: 9

Gravity: 8.83 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 5.3 AU - 8.12 AU

Year: 6583 Days

Day: 12.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 81,070,318 km

• M1: 121,174 km (0.108 R)
• M2: 193,280 km (0.097 R)
• M3: 352,153 km (0.111 R)
• M4: 462,108 km (0.091 R)
• M5: 534,364 km (0.11 R)
• M6: 865,424 km (0.069 R)
• M7: 926,460 km (0.087 R)
• M8: 1,186,012 km (0.08 R)
• M9: 1,289,384 km (0.108 R)
• M10: 1,951,803 km (0.108 R)
• M11: 2,200,585 km (0.077 R)
• M12: 2,328,790 km (0.088 R)
• M13: 2,660,449 km (0.109 R)
• M14: 3,150,082 km (0.079 R)
• M15: 3,295,043 km (0.07 R)
• M16: 4,398,028 km (0.083 R)
• M17: 4,807,776 km (0.106 R)
• M18: 5,003,301 km (0.114 R)
• M19: 5,258,515 km (0.106 R)
• M20: 5,344,534 km (0.104 R)
• M21: 5,840,750 km (0.096 R)
• M22: 5,929,910 km (0.101 R)
• M23: 6,382,294 km (0.095 R)
• M24: 7,066,106 km (0.118 R)
• M25: 7,352,436 km (0.052 R)
• M26: 7,448,777 km (0.104 R)
• M27: 7,513,254 km (0.086 R)
• M28: 7,610,193 km (0.046 R)
• M29: 7,772,956 km (0.06 R)
• M30: 7,903,854 km (0.082 R)
• M31: 8,101,622 km (0.059 R)
• M32: 8,535,905 km (0.084 R)
• M33: 8,840,935 km (0.1 R)
• M34: 9,287,933 km (0.089 R)
• M35: 9,812,872 km (0.114 R)
• M36: 10,168,317 km (0.069 R)
• M37: 11,296,434 km (0.117 R)
• M38: 11,407,735 km (0.106 R)
• M39: 11,856,529 km (0.055 R)
• M40: 13,276,512 km (0.108 R)
• M41: 13,630,012 km (0.086 R)
• M42: 14,507,104 km (0.043 R)
• M43: 15,567,154 km (0.098 R)
• M44: 15,773,899 km (0.097 R)
• M45: 15,981,541 km (0.101 R)
• M46: 16,736,411 km (0.079 R)
• M47: 16,863,420 km (0.077 R)
• M48: 16,948,242 km (0.087 R)
• M49: 17,118,335 km (0.114 R)
• M50: 17,417,231 km (0.076 R)
• M51: 17,761,007 km (0.031 R)
• M52: 18,630,320 km (0.103 R)
• M53: 19,026,156 km (0.088 R)
• M54: 19,158,551 km (0.119 R)
• M55: 19,915,366 km (0.116 R)
• M56: 20,365,057 km (0.106 R)
• M57: 21,000,399 km (0.045 R)
• M58: 21,137,282 km (0.101 R)
• M59: 22,243,857 km (0.091 R)
• M60: 23,038,820 km (0.066 R)
• M61: 23,321,710 km (0.066 R)
• M62: 23,653,219 km (0.06 R)
• M63: 23,748,213 km (0.047 R)
• M64: 24,272,853 km (0.092 R)
• M65: 24,994,513 km (0.081 R)
• M66: 25,188,242 km (0.043 R)
• M67: 25,577,047 km (0.109 R)
• M68: 26,409,709 km (0.091 R)
• M69: 29,164,254 km (0.071 R)
• M70: 29,266,131 km (0.118 R)
• M71: 29,931,243 km (0.115 R)
• M72: 30,136,940 km (0.113 R)
• M73: 30,394,697 km (0.042 R)
• M74: 30,756,724 km (0.091 R)
• M75: 31,589,535 km (0.115 R)
• M76: 32,482,634 km (0.113 R)
• M77: 33,597,288 km (0.111 R)
• M78: 34,186,105 km (0.089 R)
• M79: 34,778,363 km (0.051 R)
• M80: 35,537,124 km (0.101 R)
• M81: 36,027,805 km (0.114 R)

Planet 9 - Gas Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 44.7

Radius: 11.3

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 5.8 AU - 8.44 AU

Year: 7196 Days

Day: 5.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 81,070,318 km

• M1: 224,397 km (0.048 R)
• M2: 474,973 km (0.12 R)
• M3: 648,058 km (0.077 R)
• M4: 778,807 km (0.036 R)
• M5: 988,393 km (0.12 R)
• M6: 1,114,055 km (0.08 R)
• M7: 1,422,377 km (0.085 R)
• M8: 1,812,229 km (0.091 R)
• M9: 2,513,843 km (0.053 R)
• M10: 2,689,022 km (0.09 R)
• M11: 2,998,689 km (0.101 R)
• M12: 3,582,420 km (0.083 R)
• M13: 3,822,974 km (0.085 R)
• M14: 4,054,401 km (0.099 R)
• M15: 4,157,026 km (0.112 R)
• M16: 4,822,287 km (0.115 R)
• M17: 4,931,195 km (0.06 R)
• M18: 5,040,999 km (0.104 R)
• M19: 5,832,223 km (0.057 R)
• M20: 6,284,607 km (0.08 R)
• M21: 6,818,222 km (0.098 R)
• M22: 7,205,830 km (0.094 R)
• M23: 7,384,450 km (0.108 R)
• M24: 7,474,209 km (0.104 R)
• M25: 8,392,590 km (0.076 R)
• M26: 8,770,026 km (0.081 R)
• M27: 9,056,655 km (0.05 R)
• M28: 9,230,189 km (0.052 R)
• M29: 9,580,397 km (0.077 R)
• M30: 10,154,105 km (0.077 R)
• M31: 10,576,420 km (0.074 R)
• M32: 10,718,538 km (0.068 R)
• M33: 10,881,749 km (0.076 R)
• M34: 11,025,064 km (0.089 R)
• M35: 11,521,729 km (0.063 R)
• M36: 11,667,886 km (0.094 R)
• M37: 11,772,754 km (0.035 R)
• M38: 12,004,481 km (0.11 R)
• M39: 12,344,218 km (0.111 R)
• M40: 12,558,292 km (0.102 R)
• M41: 13,142,173 km (0.096 R)
• M42: 14,023,454 km (0.079 R)
• M43: 14,134,904 km (0.062 R)
• M44: 14,291,533 km (0.115 R)
• M45: 14,583,848 km (0.11 R)
• M46: 15,334,979 km (0.079 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 549.5

Radius: 5.2

Gravity: 20.32 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 14.09 AU - 18.19 AU

Year: 24559 Days

Day: 15.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 81,070,318 km

• M1: 71,957 km (0.083 R)
• M2: 311,164 km (0.09 R)
• M3: 837,898 km (0.094 R)
• M4: 1,501,065 km (0.1 R)
• M5: 1,597,107 km (0.104 R)
• M6: 1,795,474 km (0.113 R)
• M7: 2,143,438 km (0.066 R)
• M8: 2,215,395 km (0.117 R)
• M9: 2,939,748 km (0.06 R)
• M10: 4,038,095 km (0.111 R)
• M11: 4,399,225 km (0.063 R)
• M12: 4,865,072 km (0.092 R)
• M13: 5,007,938 km (0.048 R)
• M14: 5,055,810 km (0.111 R)
• M15: 5,395,546 km (0.097 R)
• M16: 5,493,982 km (0.1 R)
• M17: 5,843,143 km (0.108 R)
• M18: 6,148,024 km (0.068 R)
• M19: 7,473,610 km (0.099 R)
• M20: 7,971,771 km (0.12 R)
• M21: 9,116,793 km (0.026 R)
• M22: 9,827,982 km (0.071 R)
• M23: 12,649,996 km (0.068 R)
• M24: 13,043,887 km (0.058 R)
• M25: 14,522,512 km (0.107 R)
• M26: 14,728,210 km (0.051 R)
• M27: 15,142,596 km (0.117 R)
• M28: 15,212,009 km (0.117 R)
• M29: 15,841,667 km (0.106 R)
• M30: 16,766,032 km (0.079 R)
• M31: 17,489,038 km (0.102 R)
• M32: 17,707,900 km (0.062 R)
• M33: 18,148,316 km (0.054 R)
• M34: 18,222,068 km (0.099 R)
• M35: 18,369,871 km (0.07 R)
• M36: 18,965,270 km (0.094 R)
• M37: 19,415,859 km (0.1 R)
• M38: 19,718,196 km (0.114 R)
• M39: 20,711,526 km (0.099 R)
• M40: 20,788,569 km (0.036 R)
• M41: 20,943,104 km (0.097 R)
• M42: 21,175,579 km (0.117 R)
• M43: 21,486,742 km (0.109 R)
• M44: 21,877,941 km (0.03 R)
• M45: 22,271,383 km (0.045 R)
• M46: 25,254,963 km (0.051 R)
• M47: 28,190,522 km (0.072 R)
• M48: 29,221,550 km (0.047 R)
• M49: 30,615,354 km (0.105 R)
• M50: 31,055,321 km (0.114 R)
• M51: 31,143,584 km (0.1 R)
• M52: 31,408,821 km (0.105 R)
• M53: 33,376,781 km (0.047 R)
• M54: 33,557,794 km (0.114 R)
• M55: 34,193,436 km (0.085 R)
• M56: 35,108,376 km (0.091 R)
• M57: 35,384,384 km (0.083 R)
• M58: 36,123,996 km (0.097 R)
• M59: 36,216,897 km (0.08 R)
• M60: 37,806,823 km (0.104 R)
• M61: 40,957,653 km (0.103 R)
• M62: 42,711,538 km (0.104 R)
• M63: 42,809,675 km (0.076 R)
• M64: 43,104,532 km (0.096 R)
• M65: 44,489,659 km (0.103 R)
• M66: 46,695,629 km (0.086 R)
• M67: 47,303,445 km (0.09 R)
• M68: 48,834,280 km (0.062 R)
• M69: 52,679,394 km (0.102 R)
• M70: 52,890,028 km (0.099 R)
• M71: 53,312,044 km (0.102 R)
• M72: 53,523,425 km (0.058 R)
• M73: 55,331,914 km (0.027 R)
• M74: 56,836,270 km (0.1 R)
• M75: 58,790,018 km (0.108 R)
• M76: 60,324,743 km (0.093 R)
• M77: 60,545,101 km (0.065 R)
• M78: 61,539,926 km (0.082 R)
• M79: 62,317,387 km (0.111 R)
• M80: 62,540,138 km (0.034 R)
• M81: 63,098,138 km (0.104 R)
• M82: 63,882,031 km (0.103 R)
• M83: 66,139,612 km (0.055 R)
• M84: 66,480,546 km (0.118 R)
• M85: 67,164,058 km (0.077 R)
• M86: 67,506,638 km (0.116 R)
• M87: 67,620,930 km (0.084 R)
• M88: 69,228,509 km (0.109 R)
• M89: 69,805,658 km (0.079 R)
• M90: 70,152,725 km (0.114 R)
• M91: 72,949,906 km (0.082 R)
• M92: 73,890,278 km (0.059 R)
• M93: 77,213,295 km (0.09 R)
• M94: 79,979,210 km (0.077 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 12,215 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit