🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.47 AU - 0.59 AU

Year: 176 Days

Day: 24.7 Hours

Environment

Temp: 18 °C

Axial Tilt: 49.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 45,163,603 km

• M1: 36,502 km (0.11 R)
• M2: 112,049 km (0.054 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.76 AU - 1.02 AU

Year: 383 Days

Day: 40.1 Hours

Environment

Temp: -73 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,163,603 km

• M1: 636,090 km (0.098 R)

Asteroid Belt

Center: 2.16 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 967.5

Radius: 14.8

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 3.2 AU - 3.66 AU

Year: 2900 Days

Day: 9.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 45,163,603 km

• M1: 265,536 km (0.103 R)
• M2: 414,685 km (0.12 R)
• M3: 544,985 km (0.064 R)
• M4: 743,053 km (0.105 R)
• M5: 879,486 km (0.085 R)
• M6: 1,168,060 km (0.069 R)
• M7: 1,267,244 km (0.089 R)
• M8: 1,421,928 km (0.052 R)
• M9: 1,610,720 km (0.066 R)
• M10: 2,306,650 km (0.111 R)
• M11: 2,498,584 km (0.063 R)
• M12: 2,813,637 km (0.117 R)
• M13: 2,915,812 km (0.067 R)
• M14: 3,124,052 km (0.062 R)
• M15: 3,464,088 km (0.083 R)
• M16: 3,610,993 km (0.071 R)
• M17: 3,816,391 km (0.115 R)
• M18: 4,044,977 km (0.044 R)
• M19: 4,258,603 km (0.119 R)
• M20: 4,376,635 km (0.083 R)
• M21: 4,616,141 km (0.103 R)
• M22: 4,757,960 km (0.11 R)
• M23: 5,087,524 km (0.105 R)
• M24: 5,297,410 km (0.105 R)
• M25: 5,488,746 km (0.107 R)
• M26: 5,812,775 km (0.062 R)
• M27: 5,966,113 km (0.09 R)
• M28: 6,639,004 km (0.074 R)
• M29: 6,776,484 km (0.086 R)
• M30: 7,007,763 km (0.069 R)
• M31: 7,910,586 km (0.097 R)
• M32: 8,154,281 km (0.114 R)
• M33: 8,375,835 km (0.112 R)
• M34: 8,549,518 km (0.079 R)
• M35: 8,699,266 km (0.111 R)
• M36: 8,875,193 km (0.093 R)
• M37: 9,307,381 km (0.108 R)
• M38: 9,668,510 km (0.106 R)
• M39: 10,298,317 km (0.093 R)
• M40: 10,404,682 km (0.056 R)
• M41: 10,511,345 km (0.051 R)
• M42: 10,645,085 km (0.06 R)
• M43: 11,487,620 km (0.047 R)
• M44: 11,986,679 km (0.082 R)
• M45: 12,464,495 km (0.061 R)
• M46: 12,862,724 km (0.026 R)
• M47: 13,034,762 km (0.08 R)
• M48: 13,294,164 km (0.04 R)
• M49: 13,584,384 km (0.114 R)
• M50: 14,053,224 km (0.103 R)
• M51: 14,527,300 km (0.11 R)
• M52: 14,706,518 km (0.117 R)
• M53: 15,705,084 km (0.041 R)
• M54: 15,950,424 km (0.103 R)
• M55: 16,414,028 km (0.114 R)
• M56: 16,507,227 km (0.114 R)
• M57: 16,725,491 km (0.087 R)
• M58: 17,227,990 km (0.084 R)
• M59: 17,863,183 km (0.089 R)
• M60: 18,409,065 km (0.096 R)
• M61: 19,451,613 km (0.062 R)
• M62: 19,781,326 km (0.06 R)
• M63: 20,013,203 km (0.12 R)
• M64: 20,312,698 km (0.119 R)
• M65: 20,479,799 km (0.095 R)
• M66: 21,118,731 km (0.066 R)
• M67: 21,457,571 km (0.106 R)
• M68: 21,696,030 km (0.055 R)
• M69: 21,900,979 km (0.112 R)
• M70: 22,175,341 km (0.084 R)
• M71: 22,796,621 km (0.08 R)
• M72: 23,179,292 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.4

Radius: 12.2

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 5.66 AU - 6.6 AU

Year: 6929 Days

Day: 12 Hours

Environment

Temp: -179 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 45,163,603 km

• M1: 155,133 km (0.087 R)
• M2: 466,147 km (0.114 R)
• M3: 640,279 km (0.116 R)
• M4: 853,157 km (0.118 R)
• M5: 1,243,308 km (0.07 R)
• M6: 1,331,571 km (0.083 R)
• M7: 1,628,822 km (0.061 R)
• M8: 1,726,210 km (0.055 R)
• M9: 1,886,280 km (0.116 R)
• M10: 2,114,566 km (0.119 R)
• M11: 2,374,118 km (0.118 R)
• M12: 2,485,419 km (0.105 R)
• M13: 2,667,330 km (0.064 R)
• M14: 2,783,268 km (0.068 R)
• M15: 3,044,317 km (0.081 R)
• M16: 3,488,772 km (0.114 R)
• M17: 3,693,123 km (0.082 R)
• M18: 4,033,607 km (0.079 R)
• M19: 4,302,435 km (0.111 R)
• M20: 4,577,246 km (0.097 R)
• M21: 4,744,945 km (0.086 R)
• M22: 4,829,618 km (0.067 R)
• M23: 6,036,274 km (0.089 R)
• M24: 6,128,127 km (0.03 R)
• M25: 6,816,128 km (0.039 R)
• M26: 7,137,015 km (0.119 R)
• M27: 7,364,703 km (0.086 R)
• M28: 7,561,574 km (0.09 R)
• M29: 7,660,757 km (0.046 R)
• M30: 8,231,024 km (0.107 R)
• M31: 8,367,159 km (0.107 R)
• M32: 8,607,263 km (0.104 R)
• M33: 8,849,612 km (0.099 R)
• M34: 8,989,186 km (0.115 R)
• M35: 9,164,665 km (0.074 R)
• M36: 9,305,885 km (0.119 R)
• M37: 9,554,666 km (0.089 R)
• M38: 10,131,815 km (0.065 R)
• M39: 11,661,752 km (0.066 R)
• M40: 11,738,197 km (0.087 R)
• M41: 12,512,216 km (0.112 R)
• M42: 13,183,163 km (0.112 R)
• M43: 14,109,473 km (0.08 R)
• M44: 14,313,524 km (0.063 R)
• M45: 14,436,494 km (0.093 R)
• M46: 16,109,596 km (0.094 R)
• M47: 16,280,138 km (0.112 R)
• M48: 16,365,708 km (0.07 R)
• M49: 17,711,042 km (0.056 R)
• M50: 17,799,155 km (0.082 R)
• M51: 18,330,227 km (0.063 R)
• M52: 18,419,387 km (0.062 R)
• M53: 19,091,680 km (0.1 R)
• M54: 21,156,879 km (0.119 R)
• M55: 21,672,393 km (0.119 R)
• M56: 22,715,838 km (0.099 R)
• M57: 23,147,428 km (0.101 R)
• M58: 24,901,014 km (0.099 R)
• M59: 25,395,585 km (0.084 R)
• M60: 26,344,335 km (0.119 R)
• M61: 28,534,148 km (0.094 R)
• M62: 28,844,414 km (0.065 R)
• M63: 29,155,727 km (0.105 R)
• M64: 29,886,363 km (0.082 R)
• M65: 30,043,740 km (0.105 R)
• M66: 30,676,091 km (0.1 R)
• M67: 30,993,836 km (0.116 R)
• M68: 31,312,630 km (0.044 R)
• M69: 32,437,306 km (0.113 R)
• M70: 32,923,350 km (0.09 R)
• M71: 33,357,333 km (0.114 R)
• M72: 33,793,411 km (0.112 R)
• M73: 34,011,973 km (0.091 R)
• M74: 34,836,258 km (0.118 R)
• M75: 35,889,876 km (0.099 R)
• M76: 36,560,672 km (0.06 R)
• M77: 37,574,497 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 137.6

Radius: 14.2

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 4.81 AU - 7.53 AU

Year: 6997 Days

Day: 13.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 45,163,603 km

• M1: 379,231 km (0.112 R)
• M2: 483,201 km (0.076 R)
• M3: 645,515 km (0.063 R)
• M4: 912,697 km (0.047 R)
• M5: 1,146,668 km (0.105 R)
• M6: 1,542,055 km (0.071 R)
• M7: 1,701,526 km (0.11 R)
• M8: 2,066,545 km (0.101 R)
• M9: 2,645,190 km (0.04 R)
• M10: 2,757,238 km (0.12 R)
• M11: 2,936,756 km (0.068 R)
• M12: 3,069,748 km (0.04 R)
• M13: 3,273,052 km (0.12 R)
• M14: 3,693,422 km (0.119 R)
• M15: 4,112,595 km (0.039 R)
• M16: 4,318,591 km (0.039 R)
• M17: 4,432,435 km (0.064 R)
• M18: 5,297,859 km (0.083 R)
• M19: 6,023,409 km (0.097 R)
• M20: 6,129,623 km (0.113 R)
• M21: 6,322,455 km (0.091 R)
• M22: 6,935,208 km (0.041 R)
• M23: 7,544,370 km (0.08 R)
• M24: 8,502,096 km (0.117 R)
• M25: 8,983,352 km (0.075 R)
• M26: 9,547,635 km (0.101 R)
• M27: 9,721,767 km (0.083 R)
• M28: 9,846,681 km (0.084 R)
• M29: 11,467,126 km (0.059 R)
• M30: 11,811,799 km (0.107 R)
• M31: 12,294,701 km (0.107 R)
• M32: 13,279,953 km (0.101 R)
• M33: 13,641,979 km (0.093 R)
• M34: 13,754,028 km (0.088 R)
• M35: 15,238,638 km (0.109 R)
• M36: 15,500,733 km (0.056 R)
• M37: 15,999,941 km (0.08 R)
• M38: 16,743,742 km (0.063 R)
• M39: 16,923,858 km (0.053 R)
• M40: 18,450,354 km (0.094 R)
• M41: 19,671,522 km (0.055 R)
• M42: 19,766,516 km (0.119 R)
• M43: 20,148,140 km (0.101 R)
• M44: 20,468,130 km (0.116 R)
• M45: 20,789,616 km (0.098 R)
• M46: 21,764,396 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 245.7

Radius: 12.4

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 6.04 AU - 6.92 AU

Year: 7531 Days

Day: 9.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 45,163,603 km

• M1: 233,522 km (0.081 R)
• M2: 651,349 km (0.109 R)
• M3: 873,652 km (0.076 R)
• M4: 1,670,410 km (0.103 R)
• M5: 3,146,492 km (0.079 R)
• M6: 3,764,481 km (0.097 R)
• M7: 4,022,388 km (0.112 R)
• M8: 4,175,426 km (0.056 R)
• M9: 4,623,621 km (0.092 R)
• M10: 4,876,741 km (0.041 R)
• M11: 4,970,090 km (0.11 R)
• M12: 5,087,375 km (0.073 R)
• M13: 5,229,493 km (0.093 R)
• M14: 5,420,978 km (0.111 R)
• M15: 7,353,783 km (0.091 R)
• M16: 7,460,895 km (0.112 R)
• M17: 7,676,914 km (0.095 R)
• M18: 7,894,878 km (0.072 R)
• M19: 9,682,722 km (0.101 R)
• M20: 9,948,109 km (0.111 R)
• M21: 10,066,740 km (0.05 R)
• M22: 10,516,132 km (0.102 R)
• M23: 10,697,744 km (0.066 R)
• M24: 11,125,594 km (0.109 R)
• M25: 11,372,580 km (0.102 R)
• M26: 12,283,182 km (0.083 R)
• M27: 13,022,046 km (0.092 R)
• M28: 13,282,496 km (0.085 R)
• M29: 14,341,200 km (0.103 R)
• M30: 14,576,517 km (0.04 R)
• M31: 15,016,784 km (0.109 R)
• M32: 15,910,482 km (0.082 R)
• M33: 16,223,739 km (0.078 R)
• M34: 17,354,550 km (0.108 R)
• M35: 18,291,930 km (0.067 R)
• M36: 20,934,726 km (0.107 R)
• M37: 21,278,203 km (0.105 R)
• M38: 21,739,114 km (0.12 R)
• M39: 22,709,854 km (0.093 R)
• M40: 23,062,756 km (0.099 R)
• M41: 23,220,282 km (0.112 R)
• M42: 23,694,807 km (0.075 R)
• M43: 24,092,587 km (0.102 R)
• M44: 24,332,393 km (0.065 R)
• M45: 24,653,280 km (0.115 R)
• M46: 25,177,920 km (0.043 R)
• M47: 25,583,929 km (0.075 R)
• M48: 26,115,001 km (0.096 R)
• M49: 26,320,100 km (0.105 R)
• M50: 27,104,890 km (0.061 R)
• M51: 27,771,648 km (0.073 R)
• M52: 28,023,122 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.1

Radius: 13.3

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 6.21 AU - 7.25 AU

Year: 7971 Days

Day: 8.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 45,163,603 km

• M1: 205,847 km (0.118 R)
• M2: 306,376 km (0.107 R)
• M3: 418,724 km (0.086 R)
• M4: 658,530 km (0.109 R)
• M5: 819,796 km (0.067 R)
• M6: 1,330,075 km (0.088 R)
• M7: 1,424,321 km (0.091 R)
• M8: 1,579,903 km (0.104 R)
• M9: 1,720,974 km (0.08 R)
• M10: 1,972,897 km (0.083 R)
• M11: 3,329,151 km (0.055 R)
• M12: 3,752,962 km (0.045 R)
• M13: 5,156,639 km (0.032 R)
• M14: 5,308,331 km (0.056 R)
• M15: 5,492,336 km (0.103 R)
• M16: 5,616,203 km (0.11 R)
• M17: 6,057,218 km (0.045 R)
• M18: 6,153,110 km (0.038 R)
• M19: 6,805,955 km (0.118 R)
• M20: 7,515,348 km (0.098 R)
• M21: 7,966,386 km (0.117 R)
• M22: 8,177,468 km (0.051 R)
• M23: 8,569,415 km (0.079 R)
• M24: 8,822,086 km (0.096 R)
• M25: 9,077,150 km (0.118 R)
• M26: 9,224,055 km (0.119 R)
• M27: 9,483,009 km (0.116 R)
• M28: 9,895,002 km (0.035 R)
• M29: 10,274,531 km (0.06 R)
• M30: 10,504,463 km (0.073 R)
• M31: 10,930,668 km (0.086 R)
• M32: 11,362,557 km (0.072 R)
• M33: 12,041,133 km (0.112 R)
• M34: 12,446,393 km (0.104 R)
• M35: 12,568,914 km (0.096 R)
• M36: 13,145,763 km (0.108 R)
• M37: 13,815,663 km (0.099 R)
• M38: 14,668,520 km (0.088 R)
• M39: 15,188,522 km (0.115 R)
• M40: 15,847,052 km (0.087 R)
• M41: 16,157,617 km (0.086 R)
• M42: 16,604,765 km (0.115 R)
• M43: 16,874,939 km (0.097 R)
• M44: 17,556,956 km (0.069 R)
• M45: 18,294,324 km (0.07 R)
• M46: 18,573,473 km (0.076 R)
• M47: 18,947,917 km (0.083 R)
• M48: 19,990,315 km (0.055 R)
• M49: 20,518,545 km (0.115 R)
• M50: 20,711,825 km (0.07 R)
• M51: 21,392,795 km (0.114 R)
• M52: 21,539,700 km (0.117 R)
• M53: 22,328,829 km (0.102 R)
• M54: 22,527,644 km (0.068 R)
• M55: 22,826,989 km (0.098 R)
• M56: 23,530,399 km (0.084 R)
• M57: 23,631,377 km (0.058 R)
• M58: 24,037,236 km (0.112 R)
• M59: 24,343,014 km (0.116 R)
• M60: 24,496,352 km (0.1 R)
• M61: 25,216,516 km (0.037 R)
• M62: 26,048,131 km (0.111 R)
• M63: 26,152,700 km (0.113 R)
• M64: 27,312,233 km (0.102 R)
• M65: 27,684,732 km (0.09 R)
• M66: 28,542,376 km (0.119 R)
• M67: 29,028,719 km (0.091 R)
• M68: 30,614,307 km (0.037 R)
• M69: 31,947,672 km (0.051 R)
• M70: 32,508,964 km (0.096 R)
• M71: 32,621,461 km (0.068 R)
• M72: 33,186,642 km (0.117 R)
• M73: 33,470,429 km (0.08 R)
• M74: 33,697,968 km (0.101 R)
• M75: 34,441,170 km (0.059 R)
• M76: 36,060,417 km (0.113 R)
• M77: 36,469,119 km (0.101 R)
• M78: 38,237,814 km (0.066 R)
• M79: 38,356,744 km (0.07 R)
• M80: 38,833,662 km (0.103 R)
• M81: 38,953,191 km (0.111 R)
• M82: 39,974,197 km (0.069 R)
• M83: 40,215,648 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.8

Radius: 13.7

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 6.64 AU - 6.82 AU

Year: 7971 Days

Day: 14.5 Hours

Environment

Temp: -188 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 45,163,603 km

• M1: 181,761 km (0.112 R)
• M2: 1,076,057 km (0.084 R)
• M3: 1,344,885 km (0.088 R)
• M4: 1,701,227 km (0.089 R)
• M5: 1,994,140 km (0.058 R)
• M6: 2,182,783 km (0.026 R)
• M7: 2,451,909 km (0.107 R)
• M8: 2,603,452 km (0.104 R)
• M9: 2,863,004 km (0.111 R)
• M10: 3,022,924 km (0.039 R)
• M11: 3,241,038 km (0.08 R)
• M12: 3,351,890 km (0.114 R)
• M13: 3,635,079 km (0.073 R)
• M14: 4,104,517 km (0.106 R)
• M15: 4,562,286 km (0.052 R)
• M16: 4,687,200 km (0.066 R)
• M17: 5,165,764 km (0.113 R)
• M18: 5,559,954 km (0.116 R)
• M19: 5,727,205 km (0.053 R)
• M20: 5,896,101 km (0.106 R)
• M21: 6,204,272 km (0.106 R)
• M22: 6,658,900 km (0.12 R)
• M23: 6,908,280 km (0.119 R)
• M24: 7,124,449 km (0.076 R)
• M25: 7,306,210 km (0.105 R)
• M26: 8,049,263 km (0.079 R)
• M27: 8,314,949 km (0.108 R)
• M28: 9,367,220 km (0.08 R)
• M29: 11,723,985 km (0.106 R)
• M30: 11,852,938 km (0.09 R)
• M31: 12,724,645 km (0.1 R)
• M32: 14,483,168 km (0.095 R)
• M33: 14,806,898 km (0.106 R)
• M34: 15,039,672 km (0.101 R)
• M35: 15,273,494 km (0.047 R)
• M36: 16,173,475 km (0.088 R)
• M37: 16,944,502 km (0.052 R)
• M38: 17,188,047 km (0.077 R)
• M39: 18,123,782 km (0.065 R)
• M40: 18,823,900 km (0.056 R)
• M41: 19,227,814 km (0.077 R)
• M42: 20,508,970 km (0.114 R)
• M43: 21,029,122 km (0.086 R)
• M44: 21,133,691 km (0.063 R)
• M45: 21,553,612 km (0.069 R)
• M46: 21,659,079 km (0.114 R)
• M47: 22,029,334 km (0.099 R)
• M48: 22,348,426 km (0.075 R)
• M49: 22,669,164 km (0.069 R)
• M50: 22,883,687 km (0.051 R)
• M51: 23,423,287 km (0.115 R)
• M52: 25,233,271 km (0.07 R)
• M53: 26,634,255 km (0.084 R)
• M54: 27,715,848 km (0.092 R)
• M55: 28,464,136 km (0.057 R)
• M56: 28,869,846 km (0.086 R)
• M57: 29,219,157 km (0.108 R)
• M58: 30,571,073 km (0.1 R)
• M59: 31,883,196 km (0.074 R)
• M60: 34,995,131 km (0.113 R)
• M61: 35,119,147 km (0.109 R)
• M62: 35,429,862 km (0.118 R)
• M63: 35,616,710 km (0.041 R)
• M64: 35,928,771 km (0.071 R)
• M65: 37,059,881 km (0.057 R)
• M66: 38,522,200 km (0.118 R)
• M67: 39,357,105 km (0.075 R)
• M68: 41,044,719 km (0.075 R)
• M69: 41,963,250 km (0.077 R)
• M70: 43,620,346 km (0.06 R)
• M71: 43,820,507 km (0.102 R)
• M72: 44,222,028 km (0.093 R)
• M73: 44,490,407 km (0.108 R)
• M74: 44,692,065 km (0.071 R)
• M75: 45,028,660 km (0.114 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: 221 - 16,686 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit