🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.65 AU - 0.73 AU

Year: 214 Days

Day: 36.6 Hours

Environment

Temp: 106 °C

Axial Tilt: 22.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.62 AU - 1.02 AU

Year: 277 Days

Day: 29.2 Hours

Environment

Temp: 117 °C

Axial Tilt: 3.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.86 AU - 1.26 AU

Year: 407 Days

Day: 34 Hours

Environment

Temp: 8 °C

Axial Tilt: 39.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.53 AU - 2.07 AU

Year: 900 Days

Day: 32.1 Hours

Environment

Temp: -58 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,344,375 km

• M1: 195,973 km (0.113 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.97

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 1.55 AU - 2.45 AU

Year: 1054 Days

Day: 14.1 Hours

Environment

Temp: -63 °C

Axial Tilt: 14.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,344,375 km

• M1: 712,983 km (0.109 R)

Asteroid Belt

Center: 4.79 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.4

Radius: 14.1

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 7.5 AU - 7.66 AU

Year: 7780 Days

Day: 13.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 74,344,375 km

• M1: 198,666 km (0.074 R)
• M2: 362,027 km (0.082 R)
• M3: 518,357 km (0.092 R)
• M4: 661,671 km (0.051 R)
• M5: 1,077,254 km (0.07 R)
• M6: 1,287,589 km (0.111 R)
• M7: 2,043,657 km (0.063 R)
• M8: 2,240,976 km (0.061 R)
• M9: 3,093,235 km (0.033 R)
• M10: 3,321,222 km (0.108 R)
• M11: 3,476,355 km (0.114 R)
• M12: 3,634,031 km (0.107 R)
• M13: 4,011,018 km (0.059 R)
• M14: 4,288,223 km (0.035 R)
• M15: 4,629,306 km (0.06 R)
• M16: 4,979,365 km (0.103 R)
• M17: 5,581,945 km (0.09 R)
• M18: 5,923,328 km (0.09 R)
• M19: 6,691,962 km (0.081 R)
• M20: 6,856,220 km (0.098 R)
• M21: 7,021,675 km (0.1 R)
• M22: 7,492,161 km (0.035 R)
• M23: 7,869,147 km (0.103 R)
• M24: 8,112,244 km (0.065 R)
• M25: 8,856,643 km (0.064 R)
• M26: 8,964,652 km (0.077 R)
• M27: 9,109,613 km (0.066 R)
• M28: 9,401,777 km (0.047 R)
• M29: 9,622,883 km (0.074 R)
• M30: 10,032,781 km (0.03 R)
• M31: 10,715,995 km (0.087 R)
• M32: 11,610,740 km (0.095 R)
• M33: 11,808,508 km (0.094 R)
• M34: 11,967,530 km (0.114 R)
• M35: 12,207,336 km (0.109 R)
• M36: 12,570,111 km (0.085 R)
• M37: 13,223,853 km (0.074 R)
• M38: 13,846,779 km (0.115 R)
• M39: 14,225,112 km (0.037 R)
• M40: 14,351,971 km (0.057 R)
• M41: 15,554,439 km (0.098 R)
• M42: 15,685,337 km (0.063 R)
• M43: 15,816,384 km (0.096 R)
• M44: 15,947,881 km (0.116 R)
• M45: 16,344,615 km (0.069 R)
• M46: 16,433,176 km (0.114 R)
• M47: 16,655,329 km (0.081 R)
• M48: 17,463,607 km (0.072 R)
• M49: 18,746,109 km (0.115 R)
• M50: 19,351,981 km (0.119 R)
• M51: 19,633,673 km (0.112 R)
• M52: 19,822,316 km (0.095 R)
• M53: 20,106,403 km (0.116 R)
• M54: 20,439,407 km (0.088 R)
• M55: 20,774,357 km (0.112 R)
• M56: 21,062,931 km (0.1 R)
• M57: 22,328,679 km (0.105 R)
• M58: 24,172,174 km (0.066 R)
• M59: 24,273,152 km (0.025 R)
• M60: 24,933,328 km (0.069 R)
• M61: 25,496,563 km (0.069 R)
• M62: 26,531,482 km (0.109 R)
• M63: 27,211,553 km (0.097 R)
• M64: 27,685,629 km (0.115 R)
• M65: 29,017,050 km (0.095 R)
• M66: 31,521,019 km (0.051 R)
• M67: 31,686,774 km (0.114 R)
• M68: 32,019,031 km (0.102 R)
• M69: 32,463,935 km (0.083 R)
• M70: 33,980,408 km (0.105 R)
• M71: 34,490,986 km (0.07 R)
• M72: 34,832,817 km (0.118 R)
• M73: 35,807,447 km (0.08 R)
• M74: 36,211,361 km (0.049 R)
• M75: 36,384,895 km (0.047 R)
• M76: 36,732,860 km (0.077 R)
• M77: 36,965,484 km (0.103 R)
• M78: 37,666,201 km (0.098 R)
• M79: 38,018,204 km (0.039 R)
• M80: 38,666,412 km (0.118 R)
• M81: 39,080,948 km (0.069 R)
• M82: 39,854,369 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.8

Radius: 11

Gravity: 4.2 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 7.37 AU - 8.29 AU

Year: 8168 Days

Day: 10.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 74,344,375 km

• M1: 143,016 km (0.099 R)
• M2: 268,678 km (0.073 R)
• M3: 497,563 km (0.091 R)
• M4: 692,189 km (0.12 R)
• M5: 806,931 km (0.069 R)
• M6: 944,262 km (0.087 R)
• M7: 1,040,453 km (0.091 R)
• M8: 1,331,870 km (0.036 R)
• M9: 1,496,876 km (0.071 R)
• M10: 1,908,270 km (0.1 R)
• M11: 2,510,402 km (0.096 R)
• M12: 2,601,058 km (0.056 R)
• M13: 2,785,812 km (0.113 R)
• M14: 2,856,272 km (0.07 R)
• M15: 2,927,331 km (0.065 R)
• M16: 3,168,483 km (0.093 R)
• M17: 3,491,764 km (0.067 R)
• M18: 3,593,490 km (0.05 R)
• M19: 3,721,995 km (0.119 R)
• M20: 3,983,642 km (0.104 R)
• M21: 4,063,228 km (0.117 R)
• M22: 4,224,195 km (0.069 R)
• M23: 4,580,388 km (0.09 R)
• M24: 4,664,013 km (0.094 R)
• M25: 4,889,307 km (0.103 R)
• M26: 4,974,728 km (0.096 R)
• M27: 5,118,342 km (0.101 R)
• M28: 5,234,130 km (0.086 R)
• M29: 6,502,720 km (0.077 R)
• M30: 6,659,948 km (0.086 R)
• M31: 6,818,372 km (0.047 R)
• M32: 7,333,886 km (0.095 R)
• M33: 7,662,553 km (0.083 R)
• M34: 7,928,837 km (0.036 R)
• M35: 8,232,221 km (0.095 R)
• M36: 8,470,830 km (0.109 R)
• M37: 9,626,174 km (0.109 R)
• M38: 9,841,595 km (0.056 R)
• M39: 9,949,904 km (0.047 R)
• M40: 10,387,029 km (0.066 R)
• M41: 10,719,136 km (0.071 R)
• M42: 11,545,365 km (0.104 R)
• M43: 11,621,511 km (0.117 R)
• M44: 11,736,103 km (0.106 R)
• M45: 12,004,780 km (0.088 R)
• M46: 12,665,853 km (0.044 R)
• M47: 12,901,919 km (0.086 R)
• M48: 13,099,837 km (0.081 R)
• M49: 13,259,009 km (0.096 R)
• M50: 15,384,495 km (0.06 R)
• M51: 15,552,344 km (0.105 R)
• M52: 15,678,605 km (0.087 R)
• M53: 16,144,602 km (0.101 R)
• M54: 16,357,929 km (0.113 R)
• M55: 16,443,648 km (0.046 R)
• M56: 16,960,359 km (0.096 R)
• M57: 19,577,724 km (0.116 R)
• M58: 20,585,565 km (0.104 R)
• M59: 20,816,993 km (0.11 R)
• M60: 21,049,168 km (0.084 R)
• M61: 21,375,890 km (0.079 R)
• M62: 21,986,848 km (0.115 R)
• M63: 22,460,924 km (0.092 R)
• M64: 22,603,789 km (0.117 R)
• M65: 23,322,458 km (0.046 R)
• M66: 24,880,968 km (0.076 R)
• M67: 25,523,641 km (0.059 R)
• M68: 25,822,088 km (0.086 R)
• M69: 26,021,652 km (0.112 R)
• M70: 27,078,112 km (0.071 R)
• M71: 27,179,540 km (0.085 R)
• M72: 27,331,681 km (0.097 R)
• M73: 27,739,185 km (0.047 R)
• M74: 28,354,032 km (0.079 R)
• M75: 29,128,949 km (0.117 R)
• M76: 29,910,897 km (0.057 R)
• M77: 30,120,484 km (0.093 R)
• M78: 30,752,535 km (0.088 R)
• M79: 31,655,209 km (0.045 R)
• M80: 32,620,564 km (0.106 R)
• M81: 33,650,096 km (0.093 R)
• M82: 34,360,686 km (0.116 R)
• M83: 34,525,244 km (0.091 R)
• M84: 35,076,063 km (0.074 R)
• M85: 35,963,328 km (0.061 R)
• M86: 36,130,579 km (0.094 R)
• M87: 37,703,600 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.6

Radius: 12.6

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 8.31 AU - 9.77 AU

Year: 10132 Days

Day: 11.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 74,344,375 km

• M1: 571,763 km (0.05 R)
• M2: 861,833 km (0.028 R)
• M3: 1,045,240 km (0.097 R)
• M4: 1,545,645 km (0.116 R)
• M5: 1,673,851 km (0.093 R)
• M6: 1,772,436 km (0.115 R)
• M7: 1,856,210 km (0.116 R)
• M8: 2,186,822 km (0.087 R)
• M9: 2,498,733 km (0.065 R)
• M10: 2,650,725 km (0.066 R)
• M11: 3,562,075 km (0.069 R)
• M12: 3,669,037 km (0.08 R)
• M13: 4,493,920 km (0.109 R)
• M14: 4,609,858 km (0.071 R)
• M15: 5,107,421 km (0.063 R)
• M16: 5,277,214 km (0.083 R)
• M17: 6,754,643 km (0.075 R)
• M18: 7,210,767 km (0.079 R)
• M19: 7,401,504 km (0.058 R)
• M20: 7,483,783 km (0.043 R)
• M21: 8,096,536 km (0.109 R)
• M22: 8,466,192 km (0.086 R)
• M23: 10,798,573 km (0.086 R)
• M24: 11,017,135 km (0.049 R)
• M25: 12,002,686 km (0.104 R)
• M26: 12,424,253 km (0.093 R)
• M27: 15,510,008 km (0.093 R)
• M28: 16,111,691 km (0.109 R)
• M29: 16,325,765 km (0.073 R)
• M30: 16,576,940 km (0.06 R)
• M31: 16,829,162 km (0.066 R)
• M32: 17,082,880 km (0.089 R)
• M33: 18,035,968 km (0.118 R)
• M34: 18,481,620 km (0.091 R)
• M35: 19,006,260 km (0.115 R)
• M36: 19,649,980 km (0.056 R)
• M37: 20,609,500 km (0.057 R)
• M38: 20,958,662 km (0.088 R)
• M39: 21,544,936 km (0.083 R)
• M40: 21,702,163 km (0.099 R)
• M41: 22,057,458 km (0.085 R)
• M42: 24,556,640 km (0.118 R)
• M43: 25,009,473 km (0.051 R)
• M44: 25,589,613 km (0.114 R)
• M45: 25,797,854 km (0.108 R)
• M46: 25,923,217 km (0.081 R)
• M47: 26,006,692 km (0.068 R)
• M48: 27,441,934 km (0.104 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.1

Radius: 10.9

Gravity: 5.44 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 8.23 AU - 13.41 AU

Year: 13268 Days

Day: 9.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 74,344,375 km

• M1: 694,134 km (0.102 R)
• M2: 787,782 km (0.088 R)
• M3: 1,229,545 km (0.062 R)
• M4: 1,298,510 km (0.041 R)
• M5: 1,664,426 km (0.101 R)
• M6: 1,980,077 km (0.079 R)
• M7: 2,315,027 km (0.077 R)
• M8: 2,459,987 km (0.11 R)
• M9: 2,668,078 km (0.064 R)
• M10: 3,392,281 km (0.049 R)
• M11: 3,725,585 km (0.062 R)
• M12: 4,034,655 km (0.113 R)
• M13: 4,387,855 km (0.118 R)
• M14: 6,219,083 km (0.111 R)
• M15: 6,340,706 km (0.108 R)
• M16: 7,384,001 km (0.066 R)
• M17: 7,816,190 km (0.055 R)
• M18: 7,947,536 km (0.104 R)
• M19: 8,524,984 km (0.098 R)
• M20: 10,529,895 km (0.105 R)
• M21: 10,918,550 km (0.108 R)
• M22: 11,960,799 km (0.045 R)
• M23: 12,366,209 km (0.046 R)
• M24: 12,827,718 km (0.112 R)
• M25: 13,820,450 km (0.114 R)
• M26: 14,675,701 km (0.068 R)
• M27: 14,783,710 km (0.117 R)
• M28: 14,892,169 km (0.053 R)
• M29: 18,497,029 km (0.047 R)
• M30: 18,613,865 km (0.097 R)
• M31: 19,024,660 km (0.103 R)
• M32: 21,001,596 km (0.118 R)
• M33: 21,798,205 km (0.026 R)
• M34: 21,921,623 km (0.11 R)
• M35: 22,293,374 km (0.087 R)
• M36: 22,479,922 km (0.108 R)
• M37: 23,737,442 km (0.119 R)
• M38: 24,182,945 km (0.099 R)
• M39: 24,888,598 km (0.065 R)
• M40: 26,781,310 km (0.102 R)
• M41: 27,711,510 km (0.096 R)
• M42: 29,603,623 km (0.117 R)
• M43: 30,014,419 km (0.062 R)
• M44: 30,220,565 km (0.039 R)
• M45: 30,358,345 km (0.045 R)
• M46: 30,634,353 km (0.088 R)
• M47: 31,049,936 km (0.045 R)
• M48: 31,397,601 km (0.1 R)
• M49: 32,167,133 km (0.12 R)
• M50: 33,867,761 km (0.111 R)
• M51: 35,597,412 km (0.039 R)
• M52: 36,034,387 km (0.095 R)
• M53: 36,107,391 km (0.097 R)
• M54: 36,399,705 km (0.065 R)
• M55: 38,394,294 km (0.119 R)
• M56: 41,261,187 km (0.11 R)
• M57: 42,488,787 km (0.063 R)
• M58: 43,884,087 km (0.101 R)
• M59: 45,452,022 km (0.068 R)
• M60: 46,242,796 km (0.069 R)
• M61: 47,197,829 km (0.039 R)
• M62: 47,838,257 km (0.099 R)
• M63: 48,320,262 km (0.118 R)
• M64: 50,101,823 km (0.063 R)
• M65: 50,754,967 km (0.069 R)
• M66: 51,657,641 km (0.083 R)
• M67: 51,822,348 km (0.082 R)
• M68: 54,313,601 km (0.114 R)
• M69: 54,984,548 km (0.053 R)
• M70: 55,658,337 km (0.086 R)
• M71: 56,080,651 km (0.118 R)
• M72: 56,673,957 km (0.079 R)

Planet 10 - Ice Giant

Semi-Major Axis: 14.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 622.4

Radius: 5.4

Gravity: 21.34 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 14.12 AU - 14.58 AU

Year: 20264 Days

Day: 22.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 74,344,375 km

• M1: 110,702 km (0.086 R)
• M2: 203,603 km (0.091 R)
• M3: 246,537 km (0.038 R)
• M4: 360,830 km (0.101 R)
• M5: 973,433 km (0.106 R)
• M6: 1,355,357 km (0.108 R)
• M7: 1,413,401 km (0.109 R)
• M8: 1,843,345 km (0.118 R)
• M9: 2,451,311 km (0.108 R)
• M10: 2,594,326 km (0.044 R)
• M11: 3,116,273 km (0.096 R)
• M12: 3,548,761 km (0.086 R)
• M13: 3,710,626 km (0.114 R)
• M14: 3,833,595 km (0.057 R)
• M15: 3,999,798 km (0.107 R)
• M16: 4,955,280 km (0.104 R)
• M17: 6,218,783 km (0.119 R)
• M18: 6,710,661 km (0.104 R)
• M19: 6,860,708 km (0.082 R)
• M20: 7,317,580 km (0.099 R)
• M21: 7,679,607 km (0.091 R)
• M22: 8,100,426 km (0.063 R)
• M23: 8,367,308 km (0.111 R)
• M24: 8,582,879 km (0.097 R)
• M25: 8,637,033 km (0.082 R)
• M26: 8,909,750 km (0.108 R)
• M27: 9,240,660 km (0.055 R)
• M28: 14,469,106 km (0.091 R)
• M29: 15,910,930 km (0.119 R)
• M30: 16,987,885 km (0.102 R)
• M31: 17,603,929 km (0.111 R)
• M32: 17,810,973 km (0.094 R)
• M33: 18,366,879 km (0.092 R)
• M34: 19,282,418 km (0.114 R)
• M35: 19,495,744 km (0.099 R)
• M36: 19,853,133 km (0.061 R)
• M37: 19,996,598 km (0.107 R)
• M38: 20,501,790 km (0.072 R)
• M39: 21,230,631 km (0.116 R)
• M40: 21,377,386 km (0.078 R)
• M41: 21,672,094 km (0.065 R)
• M42: 22,638,795 km (0.09 R)
• M43: 24,691,129 km (0.048 R)
• M44: 24,845,514 km (0.105 R)
• M45: 25,778,555 km (0.062 R)
• M46: 26,485,854 km (0.076 R)
• M47: 26,722,967 km (0.109 R)
• M48: 27,598,713 km (0.116 R)
• M49: 27,758,932 km (0.084 R)
• M50: 28,080,268 km (0.061 R)
• M51: 28,564,666 km (0.08 R)
• M52: 28,889,144 km (0.113 R)
• M53: 30,116,595 km (0.041 R)
• M54: 31,110,822 km (0.079 R)
• M55: 32,622,209 km (0.116 R)
• M56: 35,978,138 km (0.114 R)
• M57: 37,297,741 km (0.102 R)
• M58: 37,474,865 km (0.095 R)
• M59: 38,991,937 km (0.116 R)
• M60: 43,010,435 km (0.073 R)
• M61: 43,941,831 km (0.088 R)
• M62: 45,068,453 km (0.049 R)
• M63: 45,729,975 km (0.075 R)
• M64: 45,824,820 km (0.06 R)
• M65: 46,109,505 km (0.064 R)
• M66: 46,299,643 km (0.03 R)
• M67: 47,254,078 km (0.12 R)
• M68: 47,733,838 km (0.05 R)
• M69: 48,891,726 km (0.089 R)
• M70: 50,547,774 km (0.1 R)
• M71: 51,038,306 km (0.053 R)
• M72: 52,420,440 km (0.119 R)
• M73: 53,714,611 km (0.11 R)
• M74: 54,315,546 km (0.054 R)
• M75: 58,789,719 km (0.095 R)
• M76: 59,305,533 km (0.043 R)
• M77: 59,512,277 km (0.097 R)
• M78: 60,030,334 km (0.107 R)
• M79: 60,445,768 km (0.118 R)
• M80: 60,653,858 km (0.084 R)
• M81: 60,966,368 km (0.116 R)
• M82: 61,070,638 km (0.091 R)
• M83: 62,642,463 km (0.046 R)
• M84: 63,486,195 km (0.106 R)
• M85: 63,909,407 km (0.085 R)
• M86: 66,468,578 km (0.102 R)
• M87: 66,575,989 km (0.119 R)
• M88: 66,898,373 km (0.045 R)
• M89: 68,084,983 km (0.065 R)
• M90: 71,136,929 km (0.045 R)
• M91: 71,356,539 km (0.046 R)
• M92: 72,017,013 km (0.103 R)
• M93: 72,347,924 km (0.05 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 283 - 13,058 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit