🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.4

Radius: 10.5

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.69 AU - 0.77 AU

Year: 409 Days

Day: 9.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 65,534,979 km

• M1: 132,394 km (0.092 R)
• M2: 236,664 km (0.115 R)
• M3: 307,274 km (0.049 R)
• M4: 394,938 km (0.088 R)
• M5: 477,367 km (0.113 R)
• M6: 591,360 km (0.061 R)
• M7: 678,127 km (0.093 R)
• M8: 886,517 km (0.098 R)
• M9: 970,741 km (0.108 R)
• M10: 1,189,303 km (0.112 R)
• M11: 1,269,039 km (0.071 R)
• M12: 1,611,468 km (0.115 R)
• M13: 1,679,386 km (0.086 R)
• M14: 1,910,814 km (0.119 R)
• M15: 2,101,252 km (0.042 R)
• M16: 2,251,149 km (0.117 R)
• M17: 2,327,444 km (0.118 R)
• M18: 2,482,726 km (0.107 R)
• M19: 2,561,714 km (0.083 R)
• M20: 2,635,466 km (0.068 R)
• M21: 2,766,065 km (0.071 R)
• M22: 2,867,193 km (0.104 R)
• M23: 2,937,354 km (0.046 R)
• M24: 3,020,979 km (0.116 R)
• M25: 3,217,401 km (0.104 R)
• M26: 3,290,405 km (0.069 R)
• M27: 3,431,326 km (0.084 R)
• M28: 3,567,610 km (0.096 R)
• M29: 3,657,070 km (0.051 R)
• M30: 3,880,718 km (0.045 R)
• M31: 3,965,690 km (0.104 R)
• M32: 4,094,344 km (0.09 R)
• M33: 4,195,472 km (0.088 R)
• M34: 4,297,348 km (0.071 R)
• M35: 4,378,131 km (0.105 R)
• M36: 4,459,213 km (0.096 R)
• M37: 4,638,132 km (0.109 R)
• M38: 4,713,380 km (0.068 R)
• M39: 4,834,704 km (0.102 R)
• M40: 5,010,781 km (0.104 R)
• M41: 5,088,123 km (0.112 R)
• M42: 5,228,146 km (0.112 R)
• M43: 5,314,315 km (0.115 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 26.8

Radius: 14.7

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.82 AU - 0.82 AU

Year: 487 Days

Day: 8.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 65,534,979 km

• M1: 184,305 km (0.116 R)
• M2: 285,882 km (0.116 R)
• M3: 379,530 km (0.112 R)
• M4: 530,923 km (0.096 R)
• M5: 637,437 km (0.073 R)
• M6: 731,534 km (0.064 R)
• M7: 860,337 km (0.066 R)
• M8: 1,015,770 km (0.118 R)
• M9: 1,129,763 km (0.073 R)
• M10: 1,241,214 km (0.08 R)
• M11: 1,359,396 km (0.065 R)
• M12: 1,458,280 km (0.041 R)
• M13: 1,599,650 km (0.052 R)
• M14: 1,691,204 km (0.034 R)
• M15: 1,815,221 km (0.113 R)
• M16: 1,942,379 km (0.081 R)
• M17: 2,084,497 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 974.2

Radius: 11.8

Gravity: 7 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.59 AU - 2.45 AU

Year: 1883 Days

Day: 5.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 65,534,979 km

• M1: 149,598 km (0.059 R)
• M2: 404,961 km (0.105 R)
• M3: 727,345 km (0.026 R)
• M4: 831,764 km (0.117 R)
• M5: 979,567 km (0.075 R)
• M6: 1,302,698 km (0.109 R)
• M7: 1,996,384 km (0.109 R)
• M8: 2,084,198 km (0.075 R)
• M9: 2,198,939 km (0.077 R)
• M10: 2,289,745 km (0.059 R)
• M11: 2,488,710 km (0.118 R)
• M12: 2,665,834 km (0.085 R)
• M13: 2,791,047 km (0.079 R)
• M14: 2,903,994 km (0.108 R)
• M15: 3,004,075 km (0.074 R)
• M16: 3,149,035 km (0.088 R)
• M17: 3,341,119 km (0.076 R)
• M18: 3,537,092 km (0.065 R)
• M19: 3,690,579 km (0.067 R)
• M20: 3,877,577 km (0.099 R)
• M21: 3,988,130 km (0.114 R)
• M22: 4,228,683 km (0.025 R)
• M23: 4,375,289 km (0.104 R)
• M24: 4,540,295 km (0.113 R)
• M25: 4,640,227 km (0.117 R)
• M26: 5,325,684 km (0.063 R)
• M27: 5,573,119 km (0.039 R)
• M28: 5,662,279 km (0.12 R)
• M29: 5,770,139 km (0.099 R)
• M30: 5,987,804 km (0.114 R)
• M31: 6,282,213 km (0.032 R)
• M32: 6,562,709 km (0.093 R)
• M33: 6,657,105 km (0.087 R)
• M34: 7,330,595 km (0.119 R)
• M35: 7,428,581 km (0.074 R)
• M36: 7,645,798 km (0.028 R)
• M37: 7,804,970 km (0.042 R)
• M38: 8,025,776 km (0.106 R)
• M39: 8,126,904 km (0.109 R)
• M40: 8,330,357 km (0.075 R)
• M41: 9,224,055 km (0.075 R)
• M42: 9,436,334 km (0.065 R)
• M43: 9,521,755 km (0.113 R)
• M44: 10,061,055 km (0.098 R)
• M45: 10,148,271 km (0.113 R)
• M46: 10,235,786 km (0.115 R)
• M47: 10,367,432 km (0.071 R)
• M48: 10,922,141 km (0.118 R)
• M49: 11,101,808 km (0.042 R)
• M50: 11,192,015 km (0.094 R)
• M51: 11,350,290 km (0.107 R)
• M52: 11,486,723 km (0.079 R)
• M53: 11,692,270 km (0.062 R)
• M54: 12,130,293 km (0.103 R)
• M55: 12,714,772 km (0.075 R)
• M56: 13,452,289 km (0.104 R)
• M57: 13,548,481 km (0.083 R)
• M58: 13,693,142 km (0.047 R)
• M59: 13,789,932 km (0.105 R)
• M60: 14,968,763 km (0.106 R)
• M61: 15,118,361 km (0.091 R)
• M62: 15,368,937 km (0.107 R)
• M63: 15,444,335 km (0.118 R)
• M64: 15,950,275 km (0.104 R)
• M65: 16,128,595 km (0.115 R)
• M66: 16,358,976 km (0.072 R)
• M67: 16,564,673 km (0.068 R)
• M68: 16,642,015 km (0.069 R)
• M69: 17,186,701 km (0.045 R)
• M70: 17,526,887 km (0.118 R)
• M71: 17,658,383 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130

Radius: 10.9

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 2.8 AU - 3.7 AU

Year: 3844 Days

Day: 9.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 65,534,979 km

• M1: 137,929 km (0.071 R)
• M2: 214,224 km (0.062 R)
• M3: 461,958 km (0.097 R)
• M4: 998,865 km (0.088 R)
• M5: 1,164,619 km (0.109 R)
• M6: 1,523,804 km (0.104 R)
• M7: 1,593,816 km (0.067 R)
• M8: 1,842,298 km (0.082 R)
• M9: 2,037,074 km (0.082 R)
• M10: 2,808,401 km (0.057 R)
• M11: 3,046,112 km (0.095 R)
• M12: 3,501,488 km (0.084 R)
• M13: 3,608,600 km (0.086 R)
• M14: 3,853,641 km (0.107 R)
• M15: 4,020,144 km (0.082 R)
• M16: 4,245,887 km (0.107 R)
• M17: 4,345,968 km (0.076 R)
• M18: 4,533,863 km (0.095 R)
• M19: 4,783,841 km (0.105 R)
• M20: 5,008,088 km (0.101 R)
• M21: 5,467,204 km (0.109 R)
• M22: 5,844,190 km (0.092 R)
• M23: 6,084,145 km (0.078 R)
• M24: 6,197,241 km (0.098 R)
• M25: 6,590,235 km (0.081 R)
• M26: 6,689,867 km (0.108 R)
• M27: 7,144,046 km (0.072 R)
• M28: 8,620,577 km (0.118 R)
• M29: 9,207,300 km (0.057 R)
• M30: 9,580,547 km (0.109 R)
• M31: 9,788,039 km (0.091 R)
• M32: 9,882,735 km (0.082 R)
• M33: 10,149,767 km (0.041 R)
• M34: 10,419,192 km (0.063 R)
• M35: 10,535,430 km (0.056 R)
• M36: 11,182,291 km (0.116 R)
• M37: 11,580,521 km (0.057 R)
• M38: 11,781,431 km (0.08 R)
• M39: 12,596,590 km (0.106 R)
• M40: 12,865,566 km (0.119 R)
• M41: 13,115,395 km (0.112 R)
• M42: 13,324,832 km (0.119 R)
• M43: 13,535,466 km (0.03 R)
• M44: 13,768,390 km (0.079 R)
• M45: 14,281,211 km (0.099 R)
• M46: 14,475,090 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.5

Radius: 13.4

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 2.9 AU - 3.88 AU

Year: 4095 Days

Day: 14.6 Hours

Environment

Temp: -205 °C

Axial Tilt: 138 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 65,534,979 km

• M1: 215,571 km (0.103 R)
• M2: 412,142 km (0.085 R)
• M3: 557,551 km (0.096 R)
• M4: 659,278 km (0.102 R)
• M5: 814,261 km (0.089 R)
• M6: 995,275 km (0.115 R)
• M7: 1,286,242 km (0.115 R)
• M8: 1,399,039 km (0.097 R)
• M9: 1,500,766 km (0.104 R)
• M10: 1,885,083 km (0.036 R)
• M11: 2,214,946 km (0.04 R)
• M12: 2,404,487 km (0.099 R)
• M13: 2,563,659 km (0.062 R)
• M14: 2,744,822 km (0.111 R)
• M15: 3,451,821 km (0.025 R)
• M16: 3,571,799 km (0.117 R)
• M17: 3,857,231 km (0.063 R)
• M18: 4,171,387 km (0.064 R)
• M19: 4,277,901 km (0.032 R)
• M20: 4,450,387 km (0.093 R)
• M21: 4,581,285 km (0.102 R)
• M22: 4,891,850 km (0.114 R)
• M23: 4,981,908 km (0.087 R)
• M24: 5,186,409 km (0.104 R)
• M25: 5,580,449 km (0.065 R)
• M26: 5,674,546 km (0.116 R)
• M27: 5,960,278 km (0.105 R)
• M28: 6,745,218 km (0.109 R)
• M29: 7,150,030 km (0.032 R)
• M30: 7,536,741 km (0.054 R)
• M31: 7,877,525 km (0.119 R)
• M32: 8,036,398 km (0.106 R)
• M33: 8,250,023 km (0.086 R)
• M34: 9,458,625 km (0.112 R)
• M35: 9,712,791 km (0.108 R)
• M36: 10,083,644 km (0.075 R)
• M37: 10,401,241 km (0.107 R)
• M38: 10,546,650 km (0.06 R)
• M39: 10,634,314 km (0.041 R)
• M40: 10,751,449 km (0.101 R)
• M41: 10,869,033 km (0.119 R)
• M42: 11,254,248 km (0.085 R)
• M43: 11,613,881 km (0.111 R)
• M44: 11,886,000 km (0.105 R)
• M45: 12,344,367 km (0.075 R)
• M46: 12,529,420 km (0.056 R)
• M47: 12,684,254 km (0.074 R)
• M48: 12,933,334 km (0.12 R)
• M49: 15,181,491 km (0.119 R)
• M50: 15,445,980 km (0.118 R)
• M51: 15,612,183 km (0.095 R)
• M52: 16,147,744 km (0.094 R)
• M53: 16,723,546 km (0.095 R)
• M54: 17,306,080 km (0.056 R)
• M55: 17,582,537 km (0.065 R)
• M56: 17,686,507 km (0.084 R)
• M57: 17,895,346 km (0.065 R)
• M58: 18,244,956 km (0.075 R)
• M59: 19,343,304 km (0.072 R)
• M60: 19,558,426 km (0.119 R)
• M61: 19,738,242 km (0.106 R)
• M62: 20,063,318 km (0.112 R)
• M63: 20,718,707 km (0.041 R)
• M64: 22,163,074 km (0.104 R)
• M65: 22,463,317 km (0.088 R)
• M66: 22,954,297 km (0.109 R)
• M67: 23,372,423 km (0.031 R)
• M68: 23,831,390 km (0.096 R)
• M69: 24,758,298 km (0.081 R)
• M70: 25,539,797 km (0.072 R)
• M71: 25,815,207 km (0.11 R)
• M72: 25,973,033 km (0.089 R)
• M73: 26,210,445 km (0.112 R)
• M74: 26,727,156 km (0.084 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 439.7

Radius: 6.6

Gravity: 10.09 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 7.53 AU - 10.51 AU

Year: 17771 Days

Day: 19.3 Hours

Environment

Temp: -235 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 65,534,979 km

• M1: 97,388 km (0.085 R)
• M2: 204,650 km (0.079 R)
• M3: 293,361 km (0.111 R)
• M4: 530,773 km (0.102 R)
• M5: 1,040,004 km (0.111 R)
• M6: 1,478,625 km (0.114 R)
• M7: 1,557,015 km (0.116 R)
• M8: 2,262,219 km (0.072 R)
• M9: 2,444,728 km (0.092 R)
• M10: 2,727,468 km (0.091 R)
• M11: 2,823,959 km (0.115 R)
• M12: 2,954,558 km (0.12 R)
• M13: 3,959,407 km (0.072 R)
• M14: 4,142,515 km (0.034 R)
• M15: 4,253,815 km (0.029 R)
• M16: 4,328,465 km (0.114 R)
• M17: 4,403,563 km (0.112 R)
• M18: 5,582,245 km (0.081 R)
• M19: 5,787,642 km (0.089 R)
• M20: 6,333,525 km (0.108 R)
• M21: 6,983,677 km (0.104 R)
• M22: 7,339,122 km (0.087 R)
• M23: 7,929,136 km (0.118 R)
• M24: 8,346,514 km (0.068 R)
• M25: 9,154,492 km (0.114 R)
• M26: 11,776,195 km (0.1 R)
• M27: 15,179,098 km (0.086 R)
• M28: 16,572,153 km (0.062 R)
• M29: 19,602,707 km (0.118 R)
• M30: 20,040,430 km (0.034 R)
• M31: 20,608,004 km (0.084 R)
• M32: 20,734,714 km (0.1 R)
• M33: 20,861,872 km (0.084 R)
• M34: 20,989,180 km (0.037 R)
• M35: 23,457,545 km (0.106 R)
• M36: 24,524,028 km (0.09 R)
• M37: 24,725,686 km (0.12 R)
• M38: 25,810,869 km (0.095 R)
• M39: 25,879,235 km (0.088 R)
• M40: 26,359,294 km (0.051 R)
• M41: 27,816,976 km (0.104 R)
• M42: 27,957,149 km (0.104 R)
• M43: 28,027,311 km (0.059 R)
• M44: 28,097,622 km (0.109 R)
• M45: 31,245,759 km (0.039 R)
• M46: 31,976,694 km (0.063 R)
• M47: 34,053,263 km (0.066 R)
• M48: 34,805,291 km (0.118 R)
• M49: 35,107,778 km (0.087 R)
• M50: 35,411,013 km (0.066 R)
• M51: 36,020,026 km (0.107 R)
• M52: 36,096,470 km (0.098 R)
• M53: 37,557,892 km (0.102 R)
• M54: 38,881,983 km (0.12 R)
• M55: 39,431,605 km (0.112 R)
• M56: 41,015,996 km (0.073 R)
• M57: 41,175,617 km (0.112 R)
• M58: 41,896,230 km (0.101 R)
• M59: 42,137,382 km (0.096 R)
• M60: 42,863,680 km (0.091 R)
• M61: 42,944,612 km (0.093 R)
• M62: 43,025,544 km (0.027 R)
• M63: 43,512,635 km (0.118 R)
• M64: 47,390,810 km (0.071 R)
• M65: 48,230,054 km (0.056 R)
• M66: 50,349,707 km (0.108 R)
• M67: 51,808,286 km (0.091 R)
• M68: 53,454,910 km (0.064 R)
• M69: 53,629,191 km (0.062 R)
• M70: 53,716,407 km (0.104 R)
• M71: 55,118,587 km (0.115 R)
• M72: 56,001,065 km (0.119 R)
• M73: 56,799,320 km (0.081 R)
• M74: 58,586,565 km (0.045 R)
• M75: 58,766,232 km (0.069 R)
• M76: 59,126,314 km (0.115 R)
• M77: 60,029,586 km (0.097 R)
• M78: 60,210,749 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 329.3

Radius: 7.6

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 8.91 AU - 12.55 AU

Year: 23057 Days

Day: 15.3 Hours

Environment

Temp: -235 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 65,534,979 km

• M1: 202,855 km (0.114 R)
• M2: 308,022 km (0.076 R)
• M3: 401,072 km (0.113 R)
• M4: 848,220 km (0.099 R)
• M5: 1,008,589 km (0.046 R)
• M6: 1,204,113 km (0.105 R)
• M7: 1,465,610 km (0.07 R)
• M8: 2,514,591 km (0.117 R)
• M9: 4,401,020 km (0.115 R)
• M10: 4,640,975 km (0.106 R)
• M11: 4,762,598 km (0.106 R)
• M12: 5,903,880 km (0.1 R)
• M13: 6,213,099 km (0.062 R)
• M14: 6,302,409 km (0.069 R)
• M15: 6,392,167 km (0.085 R)
• M16: 6,572,882 km (0.074 R)
• M17: 6,663,987 km (0.083 R)
• M18: 6,847,244 km (0.066 R)
• M19: 6,985,921 km (0.066 R)
• M20: 7,265,819 km (0.114 R)
• M21: 8,127,802 km (0.113 R)
• M22: 8,770,325 km (0.12 R)
• M23: 9,531,778 km (0.107 R)
• M24: 9,946,613 km (0.078 R)
• M25: 10,526,454 km (0.051 R)
• M26: 10,579,711 km (0.057 R)
• M27: 10,740,080 km (0.062 R)
• M28: 11,499,140 km (0.088 R)
• M29: 11,608,944 km (0.115 R)
• M30: 12,556,497 km (0.085 R)
• M31: 13,010,976 km (0.111 R)
• M32: 13,355,500 km (0.115 R)
• M33: 13,877,746 km (0.089 R)
• M34: 14,288,541 km (0.106 R)
• M35: 14,822,755 km (0.116 R)
• M36: 15,242,677 km (0.115 R)
• M37: 15,484,277 km (0.108 R)
• M38: 15,727,374 km (0.111 R)
• M39: 16,836,343 km (0.079 R)
• M40: 20,245,379 km (0.086 R)
• M41: 21,180,515 km (0.04 R)
• M42: 21,653,245 km (0.047 R)
• M43: 23,439,742 km (0.092 R)
• M44: 23,648,880 km (0.118 R)
• M45: 23,928,778 km (0.062 R)
• M46: 24,703,994 km (0.077 R)
• M47: 25,201,706 km (0.055 R)
• M48: 25,630,902 km (0.042 R)
• M49: 25,846,323 km (0.077 R)
• M50: 26,206,854 km (0.069 R)
• M51: 26,423,921 km (0.096 R)
• M52: 26,496,476 km (0.047 R)
• M53: 27,078,860 km (0.051 R)
• M54: 28,478,797 km (0.065 R)
• M55: 31,579,213 km (0.082 R)
• M56: 32,041,770 km (0.086 R)
• M57: 32,506,720 km (0.076 R)
• M58: 33,835,897 km (0.05 R)
• M59: 34,151,249 km (0.103 R)
• M60: 36,224,526 km (0.115 R)
• M61: 36,627,991 km (0.071 R)
• M62: 37,195,267 km (0.089 R)
• M63: 38,174,385 km (0.119 R)
• M64: 38,749,439 km (0.041 R)
• M65: 39,244,757 km (0.109 R)
• M66: 40,241,378 km (0.058 R)
• M67: 40,742,980 km (0.065 R)
• M68: 41,330,601 km (0.077 R)
• M69: 41,921,063 km (0.069 R)
• M70: 42,769,433 km (0.099 R)
• M71: 43,709,207 km (0.029 R)
• M72: 43,966,665 km (0.084 R)
• M73: 44,052,683 km (0.057 R)
• M74: 44,138,702 km (0.11 R)
• M75: 46,919,876 km (0.117 R)
• M76: 47,271,581 km (0.108 R)
• M77: 47,359,544 km (0.076 R)
• M78: 47,712,296 km (0.106 R)
• M79: 48,420,343 km (0.115 R)
• M80: 49,042,820 km (0.119 R)
• M81: 50,925,808 km (0.079 R)
• M82: 51,377,743 km (0.086 R)
• M83: 52,285,353 km (0.114 R)
• M84: 52,558,669 km (0.071 R)
• M85: 52,923,837 km (0.093 R)
• M86: 55,689,453 km (0.092 R)
• M87: 57,089,689 km (0.092 R)
• M88: 57,935,515 km (0.07 R)
• M89: 58,690,835 km (0.063 R)
• M90: 59,069,617 km (0.041 R)
• M91: 61,648,086 km (0.102 R)
• M92: 61,840,469 km (0.083 R)
• M93: 65,142,692 km (0.073 R)
• M94: 65,436,801 km (0.11 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 322 - 12,364 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit