🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.82 AU - 1.36 AU

Year: 500 Days

Day: 21 Hours

Environment

Temp: -74 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.96 AU - 1.38 AU

Year: 556 Days

Day: 33.9 Hours

Environment

Temp: -78 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 75,272,926 km

• M1: 952,190 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.5

Radius: 10.3

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 3.2 AU - 5.1 AU

Year: 3717 Days

Day: 9.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 75,272,926 km

• M1: 130,001 km (0.049 R)
• M2: 224,098 km (0.117 R)
• M3: 445,951 km (0.072 R)
• M4: 572,361 km (0.072 R)
• M5: 673,490 km (0.107 R)
• M6: 842,984 km (0.105 R)
• M7: 982,559 km (0.029 R)
• M8: 1,107,024 km (0.083 R)
• M9: 1,200,822 km (0.109 R)
• M10: 1,297,612 km (0.112 R)
• M11: 1,409,810 km (0.094 R)
• M12: 1,657,395 km (0.093 R)
• M13: 1,947,615 km (0.038 R)
• M14: 2,033,633 km (0.104 R)
• M15: 2,284,210 km (0.078 R)
• M16: 2,451,760 km (0.101 R)
• M17: 2,544,959 km (0.106 R)
• M18: 2,783,119 km (0.079 R)
• M19: 2,913,119 km (0.102 R)
• M20: 3,128,690 km (0.065 R)
• M21: 3,401,407 km (0.112 R)
• M22: 3,628,796 km (0.092 R)
• M23: 3,699,705 km (0.048 R)
• M24: 3,789,015 km (0.119 R)
• M25: 3,861,121 km (0.089 R)
• M26: 3,933,526 km (0.116 R)
• M27: 4,024,781 km (0.08 R)
• M28: 4,228,085 km (0.101 R)
• M29: 4,568,121 km (0.082 R)
• M30: 4,664,162 km (0.062 R)
• M31: 4,916,983 km (0.105 R)
• M32: 5,194,337 km (0.055 R)
• M33: 5,274,522 km (0.084 R)
• M34: 5,702,521 km (0.069 R)
• M35: 5,785,249 km (0.066 R)
• M36: 5,972,994 km (0.09 R)
• M37: 6,505,114 km (0.058 R)
• M38: 6,635,114 km (0.088 R)
• M39: 6,766,012 km (0.088 R)
• M40: 6,963,930 km (0.08 R)
• M41: 7,052,492 km (0.028 R)
• M42: 7,186,083 km (0.082 R)
• M43: 7,365,451 km (0.06 R)
• M44: 8,121,369 km (0.092 R)
• M45: 8,662,764 km (0.094 R)
• M46: 9,264,447 km (0.076 R)
• M47: 9,509,039 km (0.051 R)
• M48: 9,830,076 km (0.074 R)
• M49: 10,129,571 km (0.097 R)
• M50: 11,619,416 km (0.093 R)
• M51: 11,883,157 km (0.08 R)
• M52: 12,122,215 km (0.119 R)
• M53: 12,229,028 km (0.088 R)
• M54: 12,309,362 km (0.113 R)
• M55: 13,396,489 km (0.076 R)
• M56: 13,784,247 km (0.057 R)
• M57: 14,401,189 km (0.092 R)
• M58: 14,599,406 km (0.09 R)
• M59: 14,941,237 km (0.03 R)
• M60: 15,228,016 km (0.084 R)
• M61: 15,516,740 km (0.103 R)
• M62: 16,305,270 km (0.078 R)
• M63: 16,541,485 km (0.096 R)
• M64: 16,927,747 km (0.099 R)
• M65: 17,921,376 km (0.099 R)
• M66: 18,195,589 km (0.116 R)
• M67: 18,379,295 km (0.046 R)
• M68: 19,057,871 km (0.027 R)
• M69: 19,431,417 km (0.11 R)
• M70: 19,870,487 km (0.086 R)
• M71: 19,996,448 km (0.108 R)
• M72: 20,249,269 km (0.085 R)
• M73: 20,503,136 km (0.107 R)
• M74: 21,496,915 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.3

Radius: 8.4

Gravity: 8.61 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 4.77 AU - 6.55 AU

Year: 5921 Days

Day: 13.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 75,272,926 km

• M1: 240,105 km (0.032 R)
• M2: 521,947 km (0.102 R)
• M3: 850,613 km (0.081 R)
• M4: 992,881 km (0.12 R)
• M5: 1,174,343 km (0.068 R)
• M6: 1,317,508 km (0.113 R)
• M7: 1,399,638 km (0.025 R)
• M8: 1,569,282 km (0.066 R)
• M9: 1,656,647 km (0.119 R)
• M10: 1,909,916 km (0.096 R)
• M11: 2,060,411 km (0.083 R)
• M12: 2,293,335 km (0.105 R)
• M13: 2,679,747 km (0.07 R)
• M14: 2,784,764 km (0.115 R)
• M15: 3,174,616 km (0.086 R)
• M16: 3,466,931 km (0.116 R)
• M17: 3,604,710 km (0.119 R)
• M18: 3,744,435 km (0.057 R)
• M19: 3,814,895 km (0.112 R)
• M20: 4,029,269 km (0.063 R)
• M21: 4,419,869 km (0.107 R)
• M22: 5,290,080 km (0.084 R)
• M23: 5,799,012 km (0.032 R)
• M24: 6,045,549 km (0.109 R)
• M25: 6,379,751 km (0.111 R)
• M26: 6,436,000 km (0.116 R)
• M27: 6,805,955 km (0.093 R)
• M28: 7,241,285 km (0.091 R)
• M29: 8,261,393 km (0.028 R)
• M30: 8,882,224 km (0.088 R)
• M31: 9,230,189 km (0.077 R)
• M32: 9,550,328 km (0.083 R)
• M33: 10,037,568 km (0.087 R)
• M34: 10,234,589 km (0.107 R)
• M35: 11,788,013 km (0.116 R)
• M36: 11,857,277 km (0.078 R)
• M37: 12,415,726 km (0.064 R)
• M38: 13,161,770 km (0.119 R)
• M39: 13,233,577 km (0.027 R)
• M40: 13,341,587 km (0.108 R)
• M41: 13,413,693 km (0.118 R)
• M42: 14,215,687 km (0.061 R)
• M43: 14,474,192 km (0.057 R)
• M44: 14,808,843 km (0.101 R)
• M45: 14,958,291 km (0.11 R)
• M46: 15,637,465 km (0.092 R)
• M47: 16,597,285 km (0.105 R)
• M48: 16,713,822 km (0.057 R)
• M49: 16,830,508 km (0.04 R)
• M50: 16,947,494 km (0.091 R)
• M51: 17,418,278 km (0.108 R)
• M52: 18,052,723 km (0.083 R)
• M53: 18,212,494 km (0.079 R)
• M54: 18,977,836 km (0.085 R)
• M55: 19,425,732 km (0.047 R)
• M56: 19,877,069 km (0.117 R)
• M57: 20,000,787 km (0.043 R)
• M58: 20,373,435 km (0.066 R)
• M59: 21,336,247 km (0.093 R)
• M60: 21,801,945 km (0.098 R)
• M61: 21,929,552 km (0.054 R)
• M62: 22,142,729 km (0.11 R)
• M63: 22,270,934 km (0.03 R)
• M64: 22,399,439 km (0.087 R)
• M65: 22,485,308 km (0.103 R)
• M66: 22,614,112 km (0.112 R)
• M67: 22,700,280 km (0.034 R)
• M68: 23,567,050 km (0.058 R)
• M69: 24,444,591 km (0.076 R)
• M70: 25,511,822 km (0.106 R)
• M71: 25,691,190 km (0.096 R)
• M72: 26,867,030 km (0.112 R)
• M73: 28,014,296 km (0.098 R)
• M74: 28,199,348 km (0.034 R)
• M75: 28,617,175 km (0.111 R)
• M76: 28,896,923 km (0.117 R)
• M77: 29,177,419 km (0.096 R)
• M78: 29,600,033 km (0.12 R)
• M79: 30,261,405 km (0.076 R)
• M80: 30,879,992 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389

Radius: 9.5

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 7.05 AU - 10.63 AU

Year: 11557 Days

Day: 14.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 75,272,926 km

• M1: 232,325 km (0.101 R)
• M2: 344,673 km (0.094 R)
• M3: 520,451 km (0.04 R)
• M4: 665,262 km (0.086 R)
• M5: 774,917 km (0.1 R)
• M6: 925,562 km (0.077 R)
• M7: 1,013,526 km (0.066 R)
• M8: 1,295,218 km (0.117 R)
• M9: 1,414,897 km (0.105 R)
• M10: 1,622,688 km (0.074 R)
• M11: 2,550,195 km (0.098 R)
• M12: 2,908,183 km (0.064 R)
• M13: 3,013,500 km (0.102 R)
• M14: 3,643,456 km (0.039 R)
• M15: 3,930,086 km (0.11 R)
• M16: 4,223,896 km (0.115 R)
• M17: 4,343,574 km (0.072 R)
• M18: 4,740,009 km (0.046 R)
• M19: 5,308,032 km (0.053 R)
• M20: 6,611,927 km (0.093 R)
• M21: 7,210,019 km (0.087 R)
• M22: 7,317,430 km (0.117 R)
• M23: 7,425,290 km (0.066 R)
• M24: 8,420,116 km (0.057 R)
• M25: 8,684,904 km (0.053 R)
• M26: 9,300,350 km (0.118 R)
• M27: 9,652,653 km (0.063 R)
• M28: 10,491,897 km (0.025 R)
• M29: 10,736,041 km (0.102 R)
• M30: 11,064,408 km (0.107 R)
• M31: 11,396,067 km (0.094 R)
• M32: 12,539,593 km (0.107 R)
• M33: 12,885,463 km (0.114 R)
• M34: 13,190,643 km (0.112 R)
• M35: 13,278,307 km (0.084 R)
• M36: 13,410,103 km (0.116 R)
• M37: 13,986,354 km (0.069 R)
• M38: 14,616,011 km (0.109 R)
• M39: 15,624,002 km (0.111 R)
• M40: 15,949,527 km (0.079 R)
• M41: 16,607,159 km (0.077 R)
• M42: 16,986,838 km (0.12 R)
• M43: 17,177,875 km (0.07 R)
• M44: 17,851,813 km (0.032 R)
• M45: 18,878,952 km (0.084 R)
• M46: 18,977,836 km (0.113 R)
• M47: 19,474,501 km (0.101 R)
• M48: 19,774,595 km (0.11 R)
• M49: 20,582,423 km (0.088 R)
• M50: 20,990,376 km (0.099 R)
• M51: 21,503,946 km (0.069 R)
• M52: 21,865,973 km (0.065 R)
• M53: 22,753,537 km (0.11 R)
• M54: 23,016,979 km (0.069 R)
• M55: 23,334,276 km (0.085 R)
• M56: 23,866,246 km (0.069 R)
• M57: 24,348,549 km (0.109 R)
• M58: 25,322,731 km (0.113 R)
• M59: 25,869,511 km (0.105 R)
• M60: 26,530,734 km (0.093 R)
• M61: 27,197,491 km (0.102 R)
• M62: 28,151,477 km (0.119 R)
• M63: 28,547,462 km (0.091 R)
• M64: 29,517,006 km (0.11 R)
• M65: 30,207,849 km (0.086 R)
• M66: 31,605,393 km (0.107 R)
• M67: 34,041,295 km (0.107 R)
• M68: 34,765,648 km (0.119 R)
• M69: 35,190,506 km (0.12 R)
• M70: 37,030,709 km (0.092 R)
• M71: 37,278,443 km (0.093 R)
• M72: 37,464,692 km (0.067 R)
• M73: 37,589,008 km (0.093 R)
• M74: 38,588,172 km (0.105 R)
• M75: 39,154,101 km (0.066 R)
• M76: 39,406,473 km (0.033 R)
• M77: 39,786,003 km (0.114 R)
• M78: 39,912,862 km (0.105 R)
• M79: 41,124,155 km (0.098 R)
• M80: 41,959,959 km (0.097 R)
• M81: 42,088,912 km (0.109 R)
• M82: 42,412,193 km (0.079 R)
• M83: 42,541,745 km (0.076 R)
• M84: 42,996,223 km (0.106 R)
• M85: 43,452,198 km (0.091 R)
• M86: 43,713,545 km (0.048 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 683.7

Radius: 5.8

Gravity: 20.32 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 9.19 AU - 14.19 AU

Year: 17575 Days

Day: 18.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 75,272,926 km

• M1: 200,162 km (0.047 R)
• M2: 737,368 km (0.119 R)
• M3: 1,200,523 km (0.068 R)
• M4: 1,649,017 km (0.088 R)
• M5: 1,891,366 km (0.1 R)
• M6: 2,477,191 km (0.097 R)
• M7: 2,684,235 km (0.099 R)
• M8: 2,789,851 km (0.026 R)
• M9: 3,078,425 km (0.088 R)
• M10: 3,452,420 km (0.075 R)
• M11: 4,201,905 km (0.096 R)
• M12: 5,394,200 km (0.106 R)
• M13: 6,165,676 km (0.053 R)
• M14: 6,399,049 km (0.093 R)
• M15: 6,587,991 km (0.1 R)
• M16: 7,659,112 km (0.096 R)
• M17: 9,364,528 km (0.117 R)
• M18: 10,675,304 km (0.102 R)
• M19: 10,731,104 km (0.081 R)
• M20: 11,011,899 km (0.1 R)
• M21: 11,238,241 km (0.091 R)
• M22: 11,351,935 km (0.088 R)
• M23: 11,580,521 km (0.108 R)
• M24: 11,926,391 km (0.105 R)
• M25: 12,392,837 km (0.096 R)
• M26: 12,805,727 km (0.119 R)
• M27: 13,827,331 km (0.103 R)
• M28: 15,125,093 km (0.109 R)
• M29: 15,250,755 km (0.115 R)
• M30: 16,719,956 km (0.105 R)
• M31: 16,784,881 km (0.118 R)
• M32: 17,702,365 km (0.103 R)
• M33: 17,834,759 km (0.102 R)
• M34: 18,033,874 km (0.092 R)
• M35: 18,568,686 km (0.103 R)
• M36: 18,838,112 km (0.091 R)
• M37: 19,791,050 km (0.063 R)
• M38: 21,460,862 km (0.111 R)
• M39: 22,814,423 km (0.093 R)
• M40: 23,175,253 km (0.079 R)
• M41: 23,975,602 km (0.113 R)
• M42: 24,637,273 km (0.119 R)
• M43: 24,785,076 km (0.104 R)
• M44: 25,753,124 km (0.105 R)
• M45: 27,572,683 km (0.09 R)
• M46: 28,808,511 km (0.115 R)
• M47: 29,747,237 km (0.114 R)
• M48: 30,062,291 km (0.051 R)
• M49: 31,976,246 km (0.064 R)
• M50: 32,056,879 km (0.112 R)
• M51: 32,137,512 km (0.109 R)
• M52: 33,355,688 km (0.105 R)
• M53: 34,837,155 km (0.1 R)
• M54: 35,003,209 km (0.084 R)
• M55: 35,252,589 km (0.106 R)
• M56: 35,669,518 km (0.109 R)
• M57: 36,256,091 km (0.051 R)
• M58: 37,184,196 km (0.116 R)
• M59: 40,974,109 km (0.063 R)
• M60: 41,236,952 km (0.115 R)
• M61: 42,028,923 km (0.085 R)
• M62: 42,382,423 km (0.06 R)
• M63: 42,914,692 km (0.051 R)
• M64: 44,434,607 km (0.118 R)
• M65: 45,336,831 km (0.077 R)
• M66: 45,699,457 km (0.034 R)
• M67: 46,884,421 km (0.079 R)
• M68: 47,526,795 km (0.106 R)
• M69: 49,098,769 km (0.091 R)
• M70: 49,191,819 km (0.107 R)
• M71: 49,751,016 km (0.106 R)
• M72: 50,031,362 km (0.116 R)
• M73: 50,218,659 km (0.113 R)
• M74: 52,293,581 km (0.055 R)
• M75: 53,915,970 km (0.093 R)
• M76: 54,107,904 km (0.112 R)
• M77: 55,748,694 km (0.114 R)
• M78: 55,845,633 km (0.099 R)
• M79: 56,039,961 km (0.062 R)
• M80: 56,137,050 km (0.047 R)
• M81: 56,916,754 km (0.098 R)
• M82: 60,468,806 km (0.112 R)
• M83: 61,769,110 km (0.063 R)
• M84: 62,171,080 km (0.102 R)
• M85: 62,674,626 km (0.063 R)
• M86: 62,876,583 km (0.067 R)
• M87: 63,179,669 km (0.065 R)
• M88: 64,702,725 km (0.057 R)
• M89: 66,237,898 km (0.094 R)
• M90: 66,546,369 km (0.085 R)
• M91: 67,577,996 km (0.027 R)
• M92: 68,511,038 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 333.1

Radius: 7

Gravity: 6.8 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 15.16 AU - 16.9 AU

Year: 28221 Days

Day: 19 Hours

Environment

Temp: -219 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 75,272,926 km

• M1: 106,065 km (0.088 R)
• M2: 332,406 km (0.101 R)
• M3: 688,599 km (0.043 R)
• M4: 2,358,410 km (0.105 R)
• M5: 3,489,969 km (0.08 R)
• M6: 3,733,813 km (0.106 R)
• M7: 3,983,343 km (0.079 R)
• M8: 4,152,837 km (0.113 R)
• M9: 4,324,575 km (0.111 R)
• M10: 4,411,342 km (0.045 R)
• M11: 4,498,707 km (0.112 R)
• M12: 4,586,671 km (0.064 R)
• M13: 5,450,299 km (0.104 R)
• M14: 6,313,928 km (0.078 R)
• M15: 7,167,982 km (0.111 R)
• M16: 7,687,236 km (0.062 R)
• M17: 8,434,478 km (0.084 R)
• M18: 8,488,782 km (0.116 R)
• M19: 9,316,656 km (0.102 R)
• M20: 9,541,801 km (0.076 R)
• M21: 9,825,588 km (0.106 R)
• M22: 10,054,772 km (0.038 R)
• M23: 11,048,252 km (0.092 R)
• M24: 11,647,092 km (0.108 R)
• M25: 12,195,069 km (0.079 R)
• M26: 12,503,240 km (0.082 R)
• M27: 14,730,603 km (0.032 R)
• M28: 15,256,589 km (0.027 R)
• M29: 16,734,915 km (0.088 R)
• M30: 17,352,755 km (0.086 R)
• M31: 17,421,869 km (0.114 R)
• M32: 18,469,353 km (0.074 R)
• M33: 19,250,553 km (0.116 R)
• M34: 19,537,332 km (0.071 R)
• M35: 20,042,524 km (0.104 R)
• M36: 21,583,682 km (0.054 R)
• M37: 22,330,923 km (0.031 R)
• M38: 24,081,517 km (0.093 R)
• M39: 24,467,929 km (0.095 R)
• M40: 25,325,124 km (0.057 R)
• M41: 25,482,053 km (0.116 R)
• M42: 26,988,952 km (0.032 R)
• M43: 27,631,924 km (0.049 R)
• M44: 27,874,422 km (0.092 R)
• M45: 29,426,200 km (0.087 R)
• M46: 30,838,404 km (0.039 R)
• M47: 31,510,547 km (0.094 R)
• M48: 31,933,012 km (0.105 R)
• M49: 32,187,478 km (0.118 R)
• M50: 32,954,765 km (0.038 R)
• M51: 33,040,485 km (0.073 R)
• M52: 33,469,681 km (0.03 R)
• M53: 33,728,186 km (0.114 R)
• M54: 33,900,822 km (0.074 R)
• M55: 34,073,757 km (0.074 R)
• M56: 34,420,525 km (0.101 R)
• M57: 35,030,286 km (0.058 R)
• M58: 36,260,429 km (0.09 R)
• M59: 36,791,951 km (0.081 R)
• M60: 37,147,694 km (0.037 R)
• M61: 38,491,981 km (0.112 R)
• M62: 38,943,617 km (0.119 R)
• M63: 39,215,436 km (0.049 R)
• M64: 42,153,987 km (0.101 R)
• M65: 43,837,861 km (0.096 R)
• M66: 43,931,958 km (0.087 R)
• M67: 46,308,470 km (0.094 R)
• M68: 46,404,512 km (0.089 R)
• M69: 48,726,570 km (0.111 R)
• M70: 49,215,007 km (0.106 R)
• M71: 49,508,967 km (0.091 R)
• M72: 49,901,661 km (0.066 R)
• M73: 50,492,722 km (0.065 R)
• M74: 52,180,036 km (0.115 R)
• M75: 52,379,750 km (0.073 R)
• M76: 55,609,568 km (0.075 R)
• M77: 56,324,646 km (0.079 R)
• M78: 57,867,299 km (0.112 R)
• M79: 57,970,671 km (0.107 R)
• M80: 58,280,937 km (0.11 R)
• M81: 58,384,608 km (0.095 R)
• M82: 59,841,093 km (0.12 R)
• M83: 62,259,791 km (0.112 R)
• M84: 62,471,622 km (0.117 R)
• M85: 64,924,877 km (0.12 R)
• M86: 65,462,383 km (0.075 R)
• M87: 66,975,116 km (0.068 R)
• M88: 67,192,183 km (0.057 R)
• M89: 68,062,693 km (0.099 R)
• M90: 69,156,253 km (0.12 R)
• M91: 71,249,726 km (0.112 R)
• M92: 73,699,541 km (0.12 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 210 - 14,335 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit