🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.45 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.1

Radius: 10.3

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.68 AU - 1.12 AU

Year: 600 Days

Day: 8.9 Hours

Environment

Temp: -177 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 73,534,084 km

• M1: 128,654 km (0.08 R)
• M2: 202,705 km (0.099 R)
• M3: 281,842 km (0.035 R)
• M4: 391,498 km (0.09 R)
• M5: 515,514 km (0.072 R)
• M6: 616,194 km (0.116 R)
• M7: 956,678 km (0.097 R)
• M8: 1,063,641 km (0.062 R)
• M9: 1,158,785 km (0.085 R)
• M10: 1,234,781 km (0.118 R)
• M11: 1,307,037 km (0.096 R)
• M12: 1,409,511 km (0.039 R)
• M13: 1,538,614 km (0.041 R)
• M14: 1,628,822 km (0.11 R)
• M15: 1,714,840 km (0.087 R)
• M16: 1,789,789 km (0.109 R)
• M17: 2,114,267 km (0.097 R)
• M18: 2,380,401 km (0.113 R)
• M19: 2,471,506 km (0.061 R)
• M20: 2,549,597 km (0.107 R)
• M21: 2,766,813 km (0.089 R)
• M22: 2,855,375 km (0.113 R)
• M23: 2,930,024 km (0.089 R)
• M24: 3,119,415 km (0.095 R)
• M25: 3,375,676 km (0.095 R)
• M26: 3,834,343 km (0.09 R)
• M27: 4,016,703 km (0.117 R)
• M28: 4,083,723 km (0.106 R)
• M29: 4,202,055 km (0.117 R)
• M30: 4,364,368 km (0.037 R)
• M31: 4,433,333 km (0.113 R)
• M32: 4,528,776 km (0.094 R)
• M33: 4,633,644 km (0.119 R)
• M34: 4,757,063 km (0.106 R)
• M35: 4,971,287 km (0.108 R)
• M36: 5,106,823 km (0.119 R)
• M37: 5,206,903 km (0.046 R)
• M38: 5,576,709 km (0.079 R)
• M39: 5,812,027 km (0.104 R)
• M40: 5,983,616 km (0.119 R)
• M41: 6,050,785 km (0.052 R)
• M42: 6,118,254 km (0.051 R)
• M43: 6,263,663 km (0.047 R)
• M44: 6,361,201 km (0.067 R)
• M45: 6,538,025 km (0.06 R)
• M46: 6,696,599 km (0.086 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.4

Radius: 11

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.93 AU - 1.01 AU

Year: 672 Days

Day: 14.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 73,534,084 km

• M1: 137,032 km (0.093 R)
• M2: 215,571 km (0.046 R)
• M3: 286,181 km (0.074 R)
• M4: 370,404 km (0.118 R)
• M5: 482,752 km (0.027 R)
• M6: 577,149 km (0.106 R)
• M7: 669,301 km (0.105 R)
• M8: 818,151 km (0.115 R)
• M9: 891,753 km (0.054 R)
• M10: 1,012,179 km (0.108 R)
• M11: 1,097,749 km (0.051 R)
• M12: 1,239,867 km (0.052 R)
• M13: 1,375,852 km (0.11 R)
• M14: 1,471,594 km (0.084 R)
• M15: 1,562,999 km (0.093 R)
• M16: 1,786,348 km (0.114 R)
• M17: 1,891,515 km (0.083 R)
• M18: 2,020,319 km (0.057 R)
• M19: 2,159,595 km (0.081 R)
• M20: 2,249,354 km (0.082 R)
• M21: 2,471,357 km (0.031 R)
• M22: 2,565,304 km (0.084 R)
• M23: 2,652,520 km (0.102 R)
• M24: 2,805,708 km (0.119 R)
• M25: 2,895,616 km (0.099 R)
• M26: 3,003,327 km (0.079 R)
• M27: 3,095,479 km (0.089 R)
• M28: 3,325,710 km (0.104 R)
• M29: 3,491,166 km (0.114 R)
• M30: 3,623,709 km (0.112 R)
• M31: 3,930,534 km (0.083 R)
• M32: 4,068,464 km (0.075 R)
• M33: 4,170,789 km (0.074 R)
• M34: 4,283,436 km (0.108 R)
• M35: 4,387,406 km (0.083 R)
• M36: 4,482,850 km (0.102 R)
• M37: 4,617,488 km (0.086 R)
• M38: 4,782,943 km (0.097 R)
• M39: 4,960,217 km (0.061 R)
• M40: 5,189,999 km (0.11 R)
• M41: 5,290,977 km (0.036 R)
• M42: 5,474,534 km (0.053 R)
• M43: 5,732,740 km (0.074 R)
• M44: 5,942,327 km (0.104 R)
• M45: 6,016,378 km (0.118 R)
• M46: 6,133,214 km (0.102 R)
• M47: 6,250,797 km (0.045 R)
• M48: 6,488,209 km (0.078 R)
• M49: 6,662,940 km (0.103 R)
• M50: 6,750,754 km (0.094 R)
• M51: 6,839,016 km (0.052 R)
• M52: 7,050,248 km (0.119 R)
• M53: 7,139,858 km (0.1 R)
• M54: 7,263,725 km (0.072 R)
• M55: 7,342,862 km (0.086 R)
• M56: 7,559,180 km (0.087 R)
• M57: 7,754,555 km (0.072 R)
• M58: 7,835,488 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326

Radius: 13.1

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.87 AU - 1.15 AU

Year: 713 Days

Day: 9.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 57.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 73,534,084 km

• M1: 163,062 km (0.105 R)
• M2: 318,344 km (0.105 R)
• M3: 426,952 km (0.088 R)
• M4: 579,692 km (0.098 R)
• M5: 666,309 km (0.081 R)
• M6: 758,162 km (0.097 R)
• M7: 841,488 km (0.055 R)
• M8: 952,041 km (0.113 R)
• M9: 1,082,640 km (0.075 R)
• M10: 1,240,765 km (0.116 R)
• M11: 1,325,437 km (0.11 R)
• M12: 1,445,564 km (0.079 R)
• M13: 1,598,154 km (0.096 R)
• M14: 1,697,038 km (0.045 R)
• M15: 1,804,150 km (0.119 R)
• M16: 1,901,539 km (0.105 R)
• M17: 2,019,272 km (0.109 R)
• M18: 2,114,267 km (0.115 R)
• M19: 2,321,759 km (0.041 R)
• M20: 2,448,319 km (0.075 R)
• M21: 2,618,412 km (0.105 R)
• M22: 2,736,295 km (0.107 R)
• M23: 2,905,939 km (0.093 R)
• M24: 3,021,129 km (0.053 R)
• M25: 3,144,996 km (0.101 R)
• M26: 3,323,018 km (0.118 R)
• M27: 3,611,891 km (0.11 R)
• M28: 3,751,615 km (0.039 R)
• M29: 3,956,564 km (0.117 R)
• M30: 4,377,982 km (0.094 R)
• M31: 4,535,508 km (0.053 R)
• M32: 4,873,450 km (0.048 R)
• M33: 5,176,086 km (0.095 R)
• M34: 5,899,841 km (0.085 R)
• M35: 6,139,048 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.7

Radius: 10.9

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.11 AU - 3.03 AU

Year: 2896 Days

Day: 10.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 73,534,084 km

• M1: 149,448 km (0.08 R)
• M2: 255,663 km (0.115 R)
• M3: 335,548 km (0.1 R)
• M4: 405,261 km (0.092 R)
• M5: 481,556 km (0.119 R)
• M6: 583,581 km (0.09 R)
• M7: 708,645 km (0.113 R)
• M8: 858,991 km (0.091 R)
• M9: 1,071,270 km (0.067 R)
• M10: 1,148,762 km (0.044 R)
• M11: 1,219,522 km (0.034 R)
• M12: 1,450,351 km (0.047 R)
• M13: 1,828,535 km (0.098 R)
• M14: 1,922,632 km (0.061 R)
• M15: 2,029,146 km (0.036 R)
• M16: 2,159,744 km (0.055 R)
• M17: 2,237,236 km (0.09 R)
• M18: 2,475,546 km (0.107 R)
• M19: 2,556,777 km (0.082 R)
• M20: 2,818,125 km (0.086 R)
• M21: 3,088,298 km (0.105 R)
• M22: 3,176,112 km (0.099 R)
• M23: 3,264,674 km (0.082 R)
• M24: 3,354,134 km (0.116 R)
• M25: 3,522,581 km (0.048 R)
• M26: 3,667,242 km (0.052 R)
• M27: 3,760,292 km (0.116 R)
• M28: 3,989,775 km (0.111 R)
• M29: 4,071,904 km (0.066 R)
• M30: 4,140,719 km (0.053 R)
• M31: 4,321,583 km (0.064 R)
• M32: 4,648,155 km (0.104 R)
• M33: 4,909,204 km (0.073 R)
• M34: 5,041,598 km (0.074 R)
• M35: 5,295,017 km (0.071 R)
• M36: 5,521,957 km (0.08 R)
• M37: 5,845,387 km (0.103 R)
• M38: 5,954,444 km (0.08 R)
• M39: 6,526,506 km (0.081 R)
• M40: 6,704,977 km (0.092 R)
• M41: 6,852,031 km (0.03 R)
• M42: 7,116,371 km (0.031 R)
• M43: 7,911,932 km (0.034 R)
• M44: 8,241,496 km (0.067 R)
• M45: 8,469,633 km (0.116 R)
• M46: 8,646,607 km (0.097 R)
• M47: 8,717,816 km (0.055 R)
• M48: 8,789,025 km (0.065 R)
• M49: 8,860,532 km (0.072 R)
• M50: 8,968,243 km (0.085 R)
• M51: 9,148,658 km (0.08 R)
• M52: 9,567,981 km (0.091 R)
• M53: 9,770,835 km (0.11 R)
• M54: 9,863,586 km (0.108 R)
• M55: 10,444,774 km (0.11 R)
• M56: 10,749,056 km (0.098 R)
• M57: 11,230,462 km (0.099 R)
• M58: 11,640,210 km (0.099 R)
• M59: 11,955,712 km (0.088 R)
• M60: 13,287,133 km (0.112 R)
• M61: 13,369,263 km (0.112 R)
• M62: 13,720,518 km (0.033 R)
• M63: 13,991,141 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.1

Radius: 12.5

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.22 AU - 4.68 AU

Year: 5518 Days

Day: 5.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 88.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 73,534,084 km

• M1: 155,881 km (0.119 R)
• M2: 411,394 km (0.101 R)
• M3: 506,538 km (0.105 R)
• M4: 716,574 km (0.092 R)
• M5: 992,432 km (0.087 R)
• M6: 1,138,889 km (0.063 R)
• M7: 1,253,780 km (0.049 R)
• M8: 1,332,618 km (0.052 R)
• M9: 1,485,357 km (0.102 R)
• M10: 1,676,693 km (0.118 R)
• M11: 1,967,810 km (0.069 R)
• M12: 2,611,530 km (0.051 R)
• M13: 3,017,090 km (0.074 R)
• M14: 3,713,318 km (0.04 R)
• M15: 3,873,238 km (0.11 R)
• M16: 4,412,389 km (0.12 R)
• M17: 4,675,233 km (0.109 R)
• M18: 4,753,622 km (0.081 R)
• M19: 4,943,462 km (0.025 R)
• M20: 5,152,001 km (0.082 R)
• M21: 5,232,934 km (0.105 R)
• M22: 5,445,512 km (0.069 R)
• M23: 5,660,933 km (0.067 R)
• M24: 6,066,194 km (0.084 R)
• M25: 6,289,693 km (0.064 R)
• M26: 6,568,394 km (0.096 R)
• M27: 6,691,662 km (0.045 R)
• M28: 6,904,839 km (0.099 R)
• M29: 7,066,106 km (0.109 R)
• M30: 7,594,635 km (0.104 R)
• M31: 7,798,387 km (0.092 R)
• M32: 7,891,587 km (0.05 R)
• M33: 8,098,032 km (0.12 R)
• M34: 8,287,423 km (0.093 R)
• M35: 8,670,244 km (0.027 R)
• M36: 9,098,243 km (0.088 R)
• M37: 9,216,126 km (0.1 R)
• M38: 9,793,425 km (0.108 R)
• M39: 10,650,022 km (0.109 R)
• M40: 10,982,728 km (0.112 R)
• M41: 11,297,781 km (0.086 R)
• M42: 11,424,640 km (0.111 R)
• M43: 11,637,218 km (0.068 R)
• M44: 11,829,601 km (0.03 R)
• M45: 12,369,500 km (0.106 R)
• M46: 12,543,931 km (0.086 R)
• M47: 12,895,336 km (0.061 R)
• M48: 13,563,141 km (0.058 R)
• M49: 13,697,929 km (0.087 R)
• M50: 13,969,150 km (0.117 R)
• M51: 14,150,911 km (0.077 R)
• M52: 15,539,030 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.6

Radius: 13.8

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.4 AU - 4.9 AU

Year: 5943 Days

Day: 13.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 73,534,084 km

• M1: 176,525 km (0.08 R)
• M2: 334,950 km (0.046 R)
• M3: 536,907 km (0.105 R)
• M4: 644,916 km (0.082 R)
• M5: 900,430 km (0.068 R)
• M6: 1,293,573 km (0.097 R)
• M7: 1,462,918 km (0.064 R)
• M8: 1,875,957 km (0.044 R)
• M9: 2,033,783 km (0.099 R)
• M10: 2,288,399 km (0.047 R)
• M11: 2,650,725 km (0.093 R)
• M12: 2,769,057 km (0.095 R)
• M13: 2,970,415 km (0.099 R)
• M14: 3,134,973 km (0.042 R)
• M15: 3,980,949 km (0.11 R)
• M16: 4,630,503 km (0.1 R)
• M17: 5,139,584 km (0.11 R)
• M18: 5,288,434 km (0.107 R)
• M19: 5,564,891 km (0.085 R)
• M20: 6,423,134 km (0.105 R)
• M21: 7,406,291 km (0.085 R)
• M22: 8,261,393 km (0.086 R)
• M23: 8,671,141 km (0.106 R)
• M24: 8,819,094 km (0.12 R)
• M25: 9,694,092 km (0.072 R)
• M26: 10,064,197 km (0.09 R)
• M27: 10,157,546 km (0.103 R)
• M28: 10,251,044 km (0.113 R)
• M29: 10,533,485 km (0.097 R)
• M30: 10,659,895 km (0.081 R)
• M31: 10,882,198 km (0.078 R)
• M32: 11,041,968 km (0.117 R)
• M33: 11,266,964 km (0.119 R)
• M34: 11,721,592 km (0.087 R)
• M35: 12,448,188 km (0.086 R)
• M36: 12,918,225 km (0.037 R)
• M37: 13,121,379 km (0.069 R)
• M38: 13,737,423 km (0.12 R)
• M39: 13,979,622 km (0.061 R)
• M40: 14,679,291 km (0.09 R)
• M41: 15,247,165 km (0.057 R)
• M42: 15,822,368 km (0.11 R)
• M43: 16,331,600 km (0.077 R)
• M44: 16,514,707 km (0.093 R)
• M45: 16,624,961 km (0.082 R)
• M46: 16,809,116 km (0.052 R)
• M47: 16,994,019 km (0.113 R)
• M48: 17,440,718 km (0.067 R)
• M49: 17,702,963 km (0.104 R)
• M50: 18,459,629 km (0.097 R)
• M51: 19,381,601 km (0.102 R)
• M52: 19,536,734 km (0.046 R)
• M53: 20,397,370 km (0.114 R)
• M54: 20,515,702 km (0.049 R)
• M55: 20,872,045 km (0.026 R)
• M56: 21,031,067 km (0.101 R)
• M57: 21,190,538 km (0.094 R)
• M58: 22,115,053 km (0.087 R)
• M59: 22,847,784 km (0.077 R)
• M60: 23,423,287 km (0.08 R)
• M61: 23,837,224 km (0.109 R)
• M62: 24,546,617 km (0.111 R)
• M63: 24,882,763 km (0.094 R)
• M64: 25,178,219 km (0.095 R)
• M65: 25,815,207 km (0.055 R)
• M66: 25,985,898 km (0.069 R)
• M67: 26,114,253 km (0.079 R)
• M68: 26,672,852 km (0.073 R)
• M69: 26,759,020 km (0.103 R)
• M70: 27,061,806 km (0.111 R)
• M71: 27,714,202 km (0.094 R)
• M72: 28,240,039 km (0.113 R)
• M73: 29,212,425 km (0.089 R)
• M74: 29,434,877 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 963.1

Radius: 5.5

Gravity: 31.84 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 6.84 AU - 9.24 AU

Year: 16025 Days

Day: 24.8 Hours

Environment

Temp: -239 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 73,534,084 km

• M1: 74,949 km (0.074 R)
• M2: 131,197 km (0.118 R)
• M3: 324,627 km (0.119 R)
• M4: 376,388 km (0.088 R)
• M5: 656,136 km (0.103 R)
• M6: 841,039 km (0.07 R)
• M7: 1,016,069 km (0.113 R)
• M8: 2,018,973 km (0.108 R)
• M9: 2,933,465 km (0.039 R)
• M10: 3,472,167 km (0.11 R)
• M11: 3,916,771 km (0.101 R)
• M12: 4,336,393 km (0.077 R)
• M13: 4,638,581 km (0.119 R)
• M14: 4,770,227 km (0.073 R)
• M15: 4,947,650 km (0.098 R)
• M16: 5,082,139 km (0.071 R)
• M17: 5,914,202 km (0.082 R)
• M18: 6,443,180 km (0.065 R)
• M19: 6,837,520 km (0.074 R)
• M20: 7,239,490 km (0.098 R)
• M21: 8,491,175 km (0.101 R)
• M22: 9,086,874 km (0.066 R)
• M23: 9,639,937 km (0.074 R)
• M24: 9,920,732 km (0.096 R)
• M25: 10,147,224 km (0.072 R)
• M26: 10,490,102 km (0.076 R)
• M27: 11,422,994 km (0.085 R)
• M28: 11,899,463 km (0.118 R)
• M29: 13,367,168 km (0.086 R)
• M30: 13,617,296 km (0.058 R)
• M31: 13,995,330 km (0.075 R)
• M32: 15,804,865 km (0.114 R)
• M33: 16,938,967 km (0.088 R)
• M34: 18,237,327 km (0.098 R)
• M35: 18,723,669 km (0.103 R)
• M36: 18,863,394 km (0.045 R)
• M37: 19,003,418 km (0.101 R)
• M38: 19,073,579 km (0.088 R)
• M39: 21,803,291 km (0.104 R)
• M40: 23,063,504 km (0.106 R)
• M41: 23,815,831 km (0.111 R)
• M42: 24,271,058 km (0.082 R)
• M43: 27,695,802 km (0.09 R)
• M44: 29,059,087 km (0.095 R)
• M45: 29,220,802 km (0.117 R)
• M46: 29,545,430 km (0.073 R)
• M47: 30,772,880 km (0.086 R)
• M48: 31,103,043 km (0.06 R)
• M49: 31,600,456 km (0.053 R)
• M50: 32,351,587 km (0.046 R)
• M51: 32,435,362 km (0.071 R)
• M52: 32,771,358 km (0.098 R)
• M53: 32,855,582 km (0.037 R)
• M54: 33,362,120 km (0.087 R)
• M55: 33,701,259 km (0.116 R)
• M56: 34,297,556 km (0.083 R)
• M57: 35,327,836 km (0.08 R)
• M58: 36,194,158 km (0.079 R)
• M59: 36,281,074 km (0.088 R)
• M60: 37,418,616 km (0.104 R)
• M61: 37,506,580 km (0.048 R)
• M62: 37,859,332 km (0.087 R)
• M63: 38,390,254 km (0.117 R)
• M64: 38,923,720 km (0.026 R)
• M65: 39,102,191 km (0.094 R)
• M66: 39,549,339 km (0.094 R)
• M67: 39,998,132 km (0.089 R)
• M68: 41,263,730 km (0.037 R)
• M69: 41,354,686 km (0.118 R)
• M70: 41,445,641 km (0.088 R)
• M71: 42,084,275 km (0.109 R)
• M72: 42,726,199 km (0.062 R)
• M73: 42,910,204 km (0.109 R)
• M74: 45,701,701 km (0.075 R)
• M75: 47,976,785 km (0.09 R)
• M76: 48,839,366 km (0.06 R)
• M77: 50,579,938 km (0.11 R)
• M78: 52,045,847 km (0.11 R)
• M79: 52,144,133 km (0.029 R)
• M80: 53,228,718 km (0.097 R)
• M81: 53,525,669 km (0.074 R)
• M82: 55,721,018 km (0.08 R)
• M83: 56,425,774 km (0.038 R)
• M84: 56,829,688 km (0.091 R)
• M85: 58,149,291 km (0.089 R)
• M86: 58,353,193 km (0.095 R)
• M87: 59,684,464 km (0.118 R)
• M88: 60,715,343 km (0.088 R)
• M89: 64,580,054 km (0.094 R)
• M90: 64,685,670 km (0.115 R)
• M91: 67,450,239 km (0.102 R)
• M92: 70,036,038 km (0.115 R)
• M93: 72,106,174 km (0.107 R)
• M94: 72,983,715 km (0.117 R)
• M95: 73,423,981 km (0.106 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 281 - 10,294 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit