🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 2.84 AU - 3.06 AU

Year: 1889 Days

Day: 43.5 Hours

Environment

Temp: -97 °C

Axial Tilt: 21.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 4.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 3.96 AU - 4.28 AU

Year: 3117 Days

Day: 35.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 105,836,916 km

• M1: 51,910 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 6.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 555.3

Radius: 14.6

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 5.4 AU - 8.28 AU

Year: 6669 Days

Day: 13.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 105,836,916 km

• M1: 190,139 km (0.081 R)
• M2: 349,161 km (0.113 R)
• M3: 583,880 km (0.043 R)
• M4: 680,222 km (0.104 R)
• M5: 993,031 km (0.119 R)
• M6: 1,336,059 km (0.105 R)
• M7: 1,470,547 km (0.092 R)
• M8: 1,883,437 km (0.051 R)
• M9: 2,172,610 km (0.12 R)
• M10: 2,272,392 km (0.087 R)
• M11: 2,729,862 km (0.074 R)
• M12: 2,969,667 km (0.084 R)
• M13: 3,081,118 km (0.116 R)
• M14: 3,331,096 km (0.076 R)
• M15: 3,540,832 km (0.069 R)
• M16: 3,635,378 km (0.081 R)
• M17: 3,730,971 km (0.082 R)
• M18: 3,900,166 km (0.118 R)
• M19: 4,602,528 km (0.045 R)
• M20: 4,706,199 km (0.031 R)
• M21: 5,128,514 km (0.04 R)
• M22: 5,317,307 km (0.108 R)
• M23: 5,453,441 km (0.085 R)
• M24: 6,123,639 km (0.1 R)
• M25: 6,439,590 km (0.106 R)
• M26: 7,633,531 km (0.038 R)
• M27: 8,005,132 km (0.08 R)
• M28: 8,161,611 km (0.092 R)
• M29: 8,573,604 km (0.109 R)
• M30: 8,733,823 km (0.062 R)
• M31: 9,155,090 km (0.107 R)
• M32: 9,253,376 km (0.094 R)
• M33: 10,288,594 km (0.053 R)
• M34: 10,596,017 km (0.106 R)
• M35: 10,802,761 km (0.064 R)
• M36: 11,220,139 km (0.107 R)
• M37: 11,820,476 km (0.119 R)
• M38: 12,322,975 km (0.115 R)
• M39: 12,686,049 km (0.075 R)
• M40: 12,795,704 km (0.113 R)
• M41: 13,126,465 km (0.092 R)
• M42: 13,871,762 km (0.103 R)
• M43: 14,439,785 km (0.088 R)
• M44: 14,630,821 km (0.108 R)
• M45: 15,015,437 km (0.094 R)
• M46: 15,716,154 km (0.074 R)
• M47: 16,031,057 km (0.101 R)
• M48: 16,149,689 km (0.11 R)
• M49: 17,841,042 km (0.096 R)
• M50: 18,005,001 km (0.085 R)
• M51: 18,666,074 km (0.1 R)
• M52: 18,874,315 km (0.114 R)
• M53: 19,461,636 km (0.081 R)
• M54: 21,520,102 km (0.079 R)
• M55: 21,913,844 km (0.052 R)
• M56: 22,089,472 km (0.086 R)
• M57: 22,353,961 km (0.085 R)
• M58: 22,797,070 km (0.075 R)
• M59: 23,737,143 km (0.082 R)
• M60: 23,962,886 km (0.104 R)
• M61: 24,144,049 km (0.116 R)
• M62: 24,827,113 km (0.111 R)
• M63: 25,194,077 km (0.082 R)
• M64: 25,933,240 km (0.089 R)
• M65: 26,679,583 km (0.081 R)
• M66: 27,955,204 km (0.069 R)
• M67: 28,193,664 km (0.098 R)
• M68: 28,480,592 km (0.111 R)
• M69: 30,173,891 km (0.082 R)
• M70: 30,565,538 km (0.097 R)
• M71: 31,502,469 km (0.106 R)
• M72: 31,700,836 km (0.067 R)
• M73: 32,049,100 km (0.071 R)
• M74: 33,404,307 km (0.114 R)
• M75: 33,657,427 km (0.057 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.3

Radius: 11.3

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 6.85 AU - 8.31 AU

Year: 7780 Days

Day: 8.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 105,836,916 km

• M1: 159,322 km (0.114 R)
• M2: 238,309 km (0.032 R)
• M3: 320,289 km (0.062 R)
• M4: 452,534 km (0.097 R)
• M5: 556,654 km (0.087 R)
• M6: 758,461 km (0.104 R)
• M7: 898,934 km (0.07 R)
• M8: 1,100,592 km (0.106 R)
• M9: 1,388,268 km (0.115 R)
• M10: 1,533,827 km (0.073 R)
• M11: 1,715,439 km (0.074 R)
• M12: 2,116,810 km (0.12 R)
• M13: 2,285,556 km (0.095 R)
• M14: 2,618,860 km (0.034 R)
• M15: 2,745,719 km (0.102 R)
• M16: 2,837,423 km (0.058 R)
• M17: 3,176,711 km (0.031 R)
• M18: 3,331,694 km (0.079 R)
• M19: 3,429,980 km (0.092 R)
• M20: 3,569,106 km (0.09 R)
• M21: 4,102,273 km (0.099 R)
• M22: 4,507,833 km (0.037 R)
• M23: 4,616,740 km (0.07 R)
• M24: 4,726,545 km (0.11 R)
• M25: 4,859,537 km (0.116 R)
• M26: 4,948,847 km (0.111 R)
• M27: 5,426,812 km (0.106 R)
• M28: 5,542,751 km (0.116 R)
• M29: 5,991,245 km (0.098 R)
• M30: 6,280,567 km (0.108 R)
• M31: 6,797,877 km (0.047 R)
• M32: 7,612,437 km (0.116 R)
• M33: 8,057,790 km (0.069 R)
• M34: 8,511,670 km (0.115 R)
• M35: 8,919,175 km (0.096 R)
• M36: 9,166,759 km (0.098 R)
• M37: 9,612,411 km (0.1 R)
• M38: 9,696,784 km (0.034 R)
• M39: 9,809,581 km (0.059 R)
• M40: 10,265,406 km (0.083 R)
• M41: 11,494,951 km (0.105 R)
• M42: 11,734,307 km (0.092 R)
• M43: 11,884,803 km (0.089 R)
• M44: 12,127,002 km (0.112 R)
• M45: 12,218,256 km (0.06 R)
• M46: 12,616,187 km (0.114 R)
• M47: 14,026,596 km (0.12 R)
• M48: 14,186,366 km (0.111 R)
• M49: 14,378,899 km (0.07 R)
• M50: 15,059,718 km (0.06 R)
• M51: 15,190,617 km (0.085 R)
• M52: 15,354,725 km (0.111 R)
• M53: 15,751,010 km (0.08 R)
• M54: 16,117,226 km (0.111 R)
• M55: 16,892,143 km (0.112 R)
• M56: 17,062,236 km (0.075 R)
• M57: 17,164,560 km (0.086 R)
• M58: 17,335,551 km (0.071 R)
• M59: 17,644,620 km (0.065 R)
• M60: 18,373,311 km (0.028 R)
• M61: 19,005,512 km (0.091 R)
• M62: 19,502,326 km (0.032 R)
• M63: 20,039,233 km (0.087 R)
• M64: 20,436,116 km (0.099 R)
• M65: 20,981,550 km (0.116 R)
• M66: 21,347,766 km (0.031 R)
• M67: 22,384,629 km (0.096 R)
• M68: 22,534,077 km (0.054 R)
• M69: 23,399,949 km (0.105 R)
• M70: 23,665,635 km (0.116 R)
• M71: 24,776,848 km (0.11 R)
• M72: 24,970,278 km (0.11 R)
• M73: 25,319,440 km (0.055 R)
• M74: 25,709,441 km (0.102 R)
• M75: 25,905,115 km (0.055 R)
• M76: 26,062,043 km (0.119 R)
• M77: 26,258,765 km (0.047 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606.9

Radius: 10.3

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 8.21 AU - 8.77 AU

Year: 9222 Days

Day: 13.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 105,836,916 km

• M1: 148,251 km (0.025 R)
• M2: 251,025 km (0.115 R)
• M3: 543,190 km (0.12 R)
• M4: 628,909 km (0.079 R)
• M5: 751,281 km (0.03 R)
• M6: 815,757 km (0.027 R)
• M7: 1,244,056 km (0.118 R)
• M8: 1,401,433 km (0.082 R)
• M9: 1,802,056 km (0.116 R)
• M10: 1,890,917 km (0.069 R)
• M11: 2,073,127 km (0.119 R)
• M12: 2,479,734 km (0.084 R)
• M13: 2,679,896 km (0.1 R)
• M14: 2,911,324 km (0.057 R)
• M15: 3,176,262 km (0.108 R)
• M16: 3,311,798 km (0.081 R)
• M17: 3,476,954 km (0.091 R)
• M18: 3,560,579 km (0.06 R)
• M19: 3,729,774 km (0.108 R)
• M20: 3,930,684 km (0.104 R)
• M21: 4,524,139 km (0.1 R)
• M22: 4,677,028 km (0.1 R)
• M23: 4,769,479 km (0.072 R)
• M24: 5,337,502 km (0.038 R)
• M25: 5,926,918 km (0.12 R)
• M26: 6,605,943 km (0.069 R)
• M27: 6,919,650 km (0.071 R)
• M28: 7,060,720 km (0.101 R)
• M29: 7,345,555 km (0.075 R)
• M30: 7,453,415 km (0.05 R)
• M31: 7,816,638 km (0.11 R)
• M32: 8,560,289 km (0.07 R)
• M33: 8,787,828 km (0.075 R)
• M34: 9,094,354 km (0.084 R)
• M35: 9,404,470 km (0.067 R)
• M36: 9,482,560 km (0.116 R)
• M37: 9,797,015 km (0.072 R)
• M38: 10,114,761 km (0.079 R)
• M39: 10,315,222 km (0.043 R)
• M40: 10,801,565 km (0.083 R)
• M41: 11,129,932 km (0.047 R)
• M42: 11,378,414 km (0.099 R)
• M43: 11,880,913 km (0.092 R)
• M44: 12,605,117 km (0.103 R)
• M45: 13,256,017 km (0.118 R)
• M46: 14,635,608 km (0.109 R)
• M47: 15,549,801 km (0.074 R)
• M48: 15,874,129 km (0.111 R)
• M49: 16,482,394 km (0.076 R)
• M50: 16,576,641 km (0.12 R)
• M51: 16,765,733 km (0.072 R)
• M52: 17,337,196 km (0.114 R)
• M53: 17,915,093 km (0.09 R)
• M54: 18,793,831 km (0.09 R)
• M55: 19,387,435 km (0.112 R)
• M56: 19,936,908 km (0.054 R)
• M57: 20,339,775 km (0.085 R)
• M58: 21,461,610 km (0.105 R)
• M59: 21,616,144 km (0.086 R)
• M60: 21,874,500 km (0.106 R)
• M61: 22,185,813 km (0.098 R)
• M62: 23,552,240 km (0.081 R)
• M63: 25,543,238 km (0.116 R)
• M64: 25,871,157 km (0.102 R)
• M65: 26,918,790 km (0.101 R)
• M66: 27,699,542 km (0.061 R)
• M67: 28,714,414 km (0.039 R)
• M68: 29,397,777 km (0.102 R)
• M69: 29,913,740 km (0.054 R)
• M70: 30,201,716 km (0.09 R)
• M71: 31,596,716 km (0.055 R)
• M72: 31,772,643 km (0.114 R)
• M73: 33,310,359 km (0.084 R)
• M74: 33,548,968 km (0.1 R)
• M75: 34,872,161 km (0.065 R)
• M76: 35,175,247 km (0.07 R)
• M77: 35,296,720 km (0.072 R)
• M78: 36,826,957 km (0.095 R)
• M79: 37,817,743 km (0.091 R)
• M80: 38,503,949 km (0.12 R)
• M81: 42,447,797 km (0.104 R)
• M82: 43,225,856 km (0.067 R)
• M83: 43,616,755 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 15.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 382.3

Radius: 3.9

Gravity: 25.13 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 13 AU - 17.66 AU

Year: 22375 Days

Day: 16.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 105,836,916 km

• M1: 79,885 km (0.073 R)
• M2: 548,276 km (0.077 R)
• M3: 629,209 km (0.091 R)
• M4: 671,096 km (0.081 R)
• M5: 1,064,838 km (0.104 R)
• M6: 1,809,685 km (0.088 R)
• M7: 2,055,176 km (0.081 R)
• M8: 2,713,855 km (0.097 R)
• M9: 3,283,972 km (0.05 R)
• M10: 3,735,010 km (0.068 R)
• M11: 4,125,610 km (0.078 R)
• M12: 4,245,288 km (0.117 R)
• M13: 4,366,163 km (0.061 R)
• M14: 4,529,076 km (0.045 R)
• M15: 5,547,837 km (0.066 R)
• M16: 5,902,534 km (0.079 R)
• M17: 6,218,933 km (0.109 R)
• M18: 6,727,267 km (0.104 R)
• M19: 6,774,091 km (0.08 R)
• M20: 7,105,151 km (0.044 R)
• M21: 7,200,744 km (0.12 R)
• M22: 7,636,074 km (0.056 R)
• M23: 7,931,081 km (0.063 R)
• M24: 8,179,712 km (0.082 R)
• M25: 8,481,451 km (0.1 R)
• M26: 9,513,377 km (0.112 R)
• M27: 9,566,036 km (0.116 R)
• M28: 9,618,844 km (0.101 R)
• M29: 10,584,349 km (0.11 R)
• M30: 10,638,802 km (0.104 R)
• M31: 11,300,623 km (0.067 R)
• M32: 11,975,609 km (0.071 R)
• M33: 12,260,742 km (0.064 R)
• M34: 12,605,865 km (0.109 R)
• M35: 13,482,358 km (0.116 R)
• M36: 13,660,081 km (0.047 R)
• M37: 14,137,597 km (0.114 R)
• M38: 14,197,736 km (0.096 R)
• M39: 14,438,887 km (0.095 R)
• M40: 14,803,158 km (0.096 R)
• M41: 14,925,380 km (0.039 R)
• M42: 16,101,967 km (0.091 R)
• M43: 16,860,278 km (0.034 R)
• M44: 20,007,818 km (0.118 R)
• M45: 22,204,064 km (0.1 R)
• M46: 22,905,828 km (0.067 R)
• M47: 23,472,504 km (0.101 R)
• M48: 25,200,061 km (0.114 R)
• M49: 26,968,158 km (0.116 R)
• M50: 27,416,503 km (0.087 R)
• M51: 28,168,980 km (0.09 R)
• M52: 28,623,757 km (0.09 R)
• M53: 28,699,753 km (0.095 R)
• M54: 29,771,323 km (0.118 R)
• M55: 30,389,461 km (0.117 R)
• M56: 33,222,845 km (0.116 R)
• M57: 38,212,682 km (0.104 R)
• M58: 39,644,184 km (0.078 R)
• M59: 41,093,338 km (0.12 R)
• M60: 42,820,147 km (0.101 R)
• M61: 44,306,551 km (0.095 R)
• M62: 45,011,755 km (0.11 R)
• M63: 45,188,730 km (0.057 R)
• M64: 45,898,572 km (0.098 R)
• M65: 47,239,716 km (0.068 R)
• M66: 47,329,475 km (0.096 R)
• M67: 47,509,441 km (0.104 R)
• M68: 48,593,428 km (0.037 R)
• M69: 49,503,132 km (0.092 R)
• M70: 51,709,102 km (0.119 R)
• M71: 52,172,706 km (0.079 R)
• M72: 52,358,507 km (0.074 R)
• M73: 52,544,607 km (0.117 R)
• M74: 53,665,394 km (0.073 R)
• M75: 54,040,884 km (0.079 R)
• M76: 54,134,832 km (0.055 R)
• M77: 54,605,467 km (0.1 R)
• M78: 55,551,075 km (0.076 R)
• M79: 55,930,754 km (0.049 R)
• M80: 58,806,025 km (0.119 R)
• M81: 59,289,825 km (0.027 R)
• M82: 60,456,539 km (0.119 R)
• M83: 61,042,663 km (0.093 R)
• M84: 61,336,473 km (0.097 R)
• M85: 61,434,460 km (0.056 R)
• M86: 63,307,126 km (0.08 R)
• M87: 63,505,343 km (0.113 R)
• M88: 65,098,261 km (0.11 R)
• M89: 66,100,567 km (0.089 R)
• M90: 66,301,627 km (0.078 R)
• M91: 67,512,322 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 18.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 803.7

Radius: 7.1

Gravity: 15.94 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 15.33 AU - 22.19 AU

Year: 30290 Days

Day: 23.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (98)

Outer Limit: 105,836,916 km

• M1: 97,687 km (0.06 R)
• M2: 163,959 km (0.088 R)
• M3: 583,731 km (0.104 R)
• M4: 637,736 km (0.108 R)
• M5: 693,685 km (0.085 R)
• M6: 1,415,345 km (0.119 R)
• M7: 1,603,839 km (0.115 R)
• M8: 2,481,081 km (0.055 R)
• M9: 3,686,241 km (0.106 R)
• M10: 4,052,008 km (0.07 R)
• M11: 4,761,700 km (0.096 R)
• M12: 5,392,106 km (0.096 R)
• M13: 5,866,780 km (0.117 R)
• M14: 5,927,068 km (0.098 R)
• M15: 6,048,392 km (0.037 R)
• M16: 6,109,278 km (0.099 R)
• M17: 7,240,387 km (0.116 R)
• M18: 7,435,164 km (0.073 R)
• M19: 7,500,538 km (0.042 R)
• M20: 7,697,558 km (0.073 R)
• M21: 8,639,726 km (0.096 R)
• M22: 8,777,206 km (0.072 R)
• M23: 8,984,998 km (0.102 R)
• M24: 10,557,122 km (0.055 R)
• M25: 10,704,176 km (0.088 R)
• M26: 11,981,742 km (0.04 R)
• M27: 12,058,486 km (0.099 R)
• M28: 12,521,791 km (0.113 R)
• M29: 14,842,054 km (0.085 R)
• M30: 15,172,366 km (0.035 R)
• M31: 15,505,071 km (0.049 R)
• M32: 16,177,813 km (0.116 R)
• M33: 19,051,588 km (0.05 R)
• M34: 19,410,623 km (0.077 R)
• M35: 20,500,743 km (0.1 R)
• M36: 20,868,454 km (0.059 R)
• M37: 21,891,105 km (0.107 R)
• M38: 22,834,918 km (0.072 R)
• M39: 23,695,555 km (0.051 R)
• M40: 25,646,012 km (0.077 R)
• M41: 26,540,457 km (0.102 R)
• M42: 26,640,389 km (0.086 R)
• M43: 30,952,398 km (0.108 R)
• M44: 31,585,795 km (0.068 R)
• M45: 31,797,925 km (0.092 R)
• M46: 32,117,017 km (0.114 R)
• M47: 33,944,954 km (0.091 R)
• M48: 34,816,660 km (0.028 R)
• M49: 35,695,847 km (0.117 R)
• M50: 36,471,213 km (0.12 R)
• M51: 37,251,964 km (0.12 R)
• M52: 40,775,592 km (0.112 R)
• M53: 40,890,932 km (0.117 R)
• M54: 41,818,290 km (0.113 R)
• M55: 44,879,511 km (0.108 R)
• M56: 45,117,970 km (0.056 R)
• M57: 45,476,556 km (0.042 R)
• M58: 46,919,876 km (0.118 R)
• M59: 47,161,926 km (0.079 R)
• M60: 48,990,311 km (0.085 R)
• M61: 52,339,358 km (0.114 R)
• M62: 53,471,964 km (0.115 R)
• M63: 54,485,639 km (0.106 R)
• M64: 55,122,327 km (0.09 R)
• M65: 56,146,175 km (0.109 R)
• M66: 58,342,721 km (0.092 R)
• M67: 59,386,016 km (0.061 R)
• M68: 59,778,860 km (0.11 R)
• M69: 62,286,869 km (0.065 R)
• M70: 62,552,854 km (0.119 R)
• M71: 63,620,683 km (0.11 R)
• M72: 67,541,344 km (0.027 R)
• M73: 72,097,198 km (0.098 R)
• M74: 73,778,229 km (0.092 R)
• M75: 76,324,086 km (0.094 R)
• M76: 78,037,131 km (0.062 R)
• M77: 79,907,403 km (0.086 R)
• M78: 81,065,590 km (0.101 R)
• M79: 81,210,700 km (0.057 R)
• M80: 82,813,192 km (0.065 R)
• M81: 83,398,569 km (0.097 R)
• M82: 87,087,802 km (0.09 R)
• M83: 87,236,353 km (0.095 R)
• M84: 87,682,902 km (0.095 R)
• M85: 87,981,051 km (0.101 R)
• M86: 90,679,198 km (0.055 R)
• M87: 90,829,843 km (0.069 R)
• M88: 92,341,380 km (0.056 R)
• M89: 95,389,287 km (0.061 R)
• M90: 97,233,679 km (0.098 R)
• M91: 98,624,790 km (0.06 R)
• M92: 99,711,319 km (0.091 R)
• M93: 100,022,483 km (0.074 R)
• M94: 100,489,826 km (0.089 R)
• M95: 100,645,857 km (0.041 R)
• M96: 101,270,428 km (0.109 R)
• M97: 101,583,088 km (0.061 R)
• M98: 104,096,930 km (0.12 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 549 - 13,996 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit