🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.01

Radius: 1

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.49 AU - 0.69 AU

Year: 166 Days

Day: 42.5 Hours

Environment

Temp: 170 °C

Axial Tilt: 8.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.61 AU - 0.79 AU

Year: 215 Days

Day: 33.6 Hours

Environment

Temp: 197 °C

Axial Tilt: 9.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.34

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.72 AU - 0.78 AU

Year: 238 Days

Day: 27.4 Hours

Environment

Temp: 168 °C

Axial Tilt: 28.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 1.09 AU - 1.63 AU

Year: 582 Days

Day: 26.2 Hours

Environment

Temp: -19 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.29 AU - 2.91 AU

Year: 1539 Days

Day: 20.6 Hours

Environment

Temp: -86 °C

Axial Tilt: 37.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,700,976 km

• M1: 42,935 km (0.088 R)

Asteroid Belt

Center: 6.62 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 10.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.4

Radius: 15

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 9.05 AU - 12.23 AU

Year: 12740 Days

Day: 11.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 36,700,976 km

• M1: 196,871 km (0.097 R)
• M2: 390,450 km (0.087 R)
• M3: 843,433 km (0.113 R)
• M4: 1,294,171 km (0.096 R)
• M5: 1,958,087 km (0.079 R)
• M6: 2,465,523 km (0.045 R)
• M7: 2,947,228 km (0.066 R)
• M8: 3,388,841 km (0.112 R)
• M9: 3,599,923 km (0.108 R)
• M10: 4,487,936 km (0.048 R)
• M11: 4,720,411 km (0.103 R)
• M12: 4,838,145 km (0.1 R)
• M13: 6,155,055 km (0.09 R)
• M14: 6,284,008 km (0.1 R)
• M15: 7,166,935 km (0.113 R)
• M16: 7,439,353 km (0.032 R)
• M17: 7,576,983 km (0.059 R)
• M18: 7,808,111 km (0.099 R)
• M19: 8,183,004 km (0.085 R)
• M20: 8,467,987 km (0.112 R)
• M21: 9,194,884 km (0.025 R)
• M22: 10,195,244 km (0.062 R)
• M23: 10,968,217 km (0.104 R)
• M24: 11,760,188 km (0.105 R)
• M25: 11,920,706 km (0.102 R)
• M26: 12,190,132 km (0.03 R)
• M27: 12,515,956 km (0.081 R)
• M28: 12,899,824 km (0.087 R)
• M29: 13,176,431 km (0.098 R)
• M30: 13,961,221 km (0.094 R)
• M31: 14,245,308 km (0.111 R)
• M32: 14,359,451 km (0.114 R)
• M33: 14,588,635 km (0.118 R)
• M34: 15,166,980 km (0.08 R)
• M35: 16,286,571 km (0.065 R)
• M36: 17,984,656 km (0.092 R)
• M37: 19,611,533 km (0.116 R)
• M38: 20,057,634 km (0.108 R)
• M39: 20,571,502 km (0.118 R)
• M40: 20,830,157 km (0.038 R)
• M41: 21,024,784 km (0.108 R)
• M42: 23,205,622 km (0.096 R)
• M43: 23,340,110 km (0.119 R)
• M44: 24,220,643 km (0.112 R)
• M45: 24,905,353 km (0.119 R)
• M46: 25,111,947 km (0.078 R)
• M47: 25,874,597 km (0.103 R)
• M48: 26,574,566 km (0.105 R)
• M49: 27,351,577 km (0.052 R)
• M50: 27,707,321 km (0.058 R)
• M51: 28,207,875 km (0.058 R)
• M52: 28,855,933 km (0.111 R)
• M53: 29,218,110 km (0.096 R)
• M54: 32,394,222 km (0.088 R)
• M55: 32,770,610 km (0.104 R)
• M56: 33,148,495 km (0.104 R)
• M57: 33,451,879 km (0.078 R)
• M58: 33,832,306 km (0.082 R)
• M59: 34,061,341 km (0.085 R)
• M60: 35,213,843 km (0.101 R)
• M61: 35,368,527 km (0.119 R)
• M62: 37,320,630 km (0.046 R)
• M63: 37,715,269 km (0.057 R)
• M64: 38,907,414 km (0.087 R)
• M65: 40,273,542 km (0.062 R)
• M66: 41,737,058 km (0.083 R)
• M67: 43,052,472 km (0.084 R)
• M68: 43,300,655 km (0.109 R)
• M69: 43,632,313 km (0.067 R)
• M70: 43,881,693 km (0.107 R)
• M71: 44,465,125 km (0.12 R)
• M72: 44,716,000 km (0.078 R)
• M73: 48,707,421 km (0.046 R)
• M74: 51,138,985 km (0.034 R)
• M75: 52,016,975 km (0.09 R)
• M76: 52,193,052 km (0.097 R)
• M77: 53,077,025 km (0.076 R)
• M78: 54,949,392 km (0.099 R)
• M79: 57,752,856 km (0.099 R)
• M80: 58,942,309 km (0.077 R)
• M81: 59,126,015 km (0.106 R)
• M82: 60,324,743 km (0.085 R)
• M83: 60,509,796 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.7

Radius: 9.4

Gravity: 8.5 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 8.88 AU - 13.28 AU

Year: 13539 Days

Day: 9.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 36,700,976 km

• M1: 132,245 km (0.086 R)
• M2: 300,542 km (0.081 R)
• M3: 399,726 km (0.103 R)
• M4: 462,407 km (0.108 R)
• M5: 617,989 km (0.1 R)
• M6: 1,187,209 km (0.108 R)
• M7: 1,482,814 km (0.102 R)
• M8: 1,912,310 km (0.069 R)
• M9: 2,319,066 km (0.11 R)
• M10: 2,470,908 km (0.088 R)
• M11: 2,563,659 km (0.081 R)
• M12: 2,978,942 km (0.069 R)
• M13: 3,144,398 km (0.069 R)
• M14: 3,729,475 km (0.118 R)
• M15: 4,199,511 km (0.05 R)
• M16: 4,422,861 km (0.052 R)
• M17: 4,881,229 km (0.071 R)
• M18: 5,719,725 km (0.067 R)
• M19: 5,884,432 km (0.109 R)
• M20: 6,516,334 km (0.08 R)
• M21: 7,347,649 km (0.101 R)
• M22: 7,526,867 km (0.09 R)
• M23: 7,662,253 km (0.117 R)
• M24: 8,073,348 km (0.118 R)
• M25: 8,212,026 km (0.104 R)
• M26: 8,351,451 km (0.039 R)
• M27: 9,204,607 km (0.078 R)
• M28: 9,349,418 km (0.119 R)
• M29: 9,837,855 km (0.09 R)
• M30: 10,184,773 km (0.098 R)
• M31: 10,334,670 km (0.048 R)
• M32: 10,737,986 km (0.065 R)
• M33: 12,189,833 km (0.083 R)
• M34: 12,562,332 km (0.088 R)
• M35: 13,264,245 km (0.111 R)
• M36: 13,427,905 km (0.078 R)
• M37: 13,647,365 km (0.106 R)
• M38: 13,868,022 km (0.072 R)
• M39: 14,145,376 km (0.084 R)
• M40: 14,424,675 km (0.1 R)
• M41: 15,102,354 km (0.038 R)
• M42: 15,732,610 km (0.091 R)
• M43: 16,138,169 km (0.108 R)
• M44: 17,435,333 km (0.11 R)
• M45: 18,399,491 km (0.115 R)
• M46: 19,010,897 km (0.116 R)
• M47: 19,878,116 km (0.112 R)
• M48: 20,631,641 km (0.119 R)
• M49: 22,166,664 km (0.116 R)
• M50: 24,070,148 km (0.1 R)
• M51: 24,403,601 km (0.056 R)
• M52: 24,604,362 km (0.057 R)
• M53: 25,684,608 km (0.082 R)
• M54: 25,957,026 km (0.091 R)
• M55: 27,542,464 km (0.111 R)
• M56: 29,087,960 km (0.102 R)
• M57: 29,942,762 km (0.05 R)
• M58: 30,950,603 km (0.111 R)
• M59: 32,115,820 km (0.068 R)
• M60: 32,335,879 km (0.082 R)
• M61: 33,147,148 km (0.073 R)
• M62: 35,091,322 km (0.099 R)
• M63: 36,918,511 km (0.052 R)
• M64: 36,995,254 km (0.078 R)
• M65: 40,902,751 km (0.075 R)
• M66: 41,141,359 km (0.101 R)
• M67: 41,300,681 km (0.11 R)
• M68: 42,180,616 km (0.119 R)
• M69: 42,260,800 km (0.055 R)
• M70: 42,421,618 km (0.098 R)
• M71: 42,582,585 km (0.075 R)
• M72: 42,824,335 km (0.096 R)
• M73: 43,066,684 km (0.079 R)
• M74: 44,857,221 km (0.118 R)
• M75: 45,103,309 km (0.096 R)
• M76: 45,596,683 km (0.109 R)
• M77: 46,838,196 km (0.119 R)
• M78: 47,171,051 km (0.106 R)
• M79: 48,258,628 km (0.087 R)
• M80: 48,847,594 km (0.089 R)
• M81: 48,931,818 km (0.073 R)
• M82: 49,185,087 km (0.12 R)
• M83: 49,269,610 km (0.096 R)
• M84: 49,608,300 km (0.12 R)
• M85: 51,227,098 km (0.06 R)
• M86: 57,606,101 km (0.114 R)
• M87: 59,757,318 km (0.106 R)
• M88: 59,937,733 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 376.8

Radius: 7.7

Gravity: 6.36 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 13.89 AU - 14.15 AU

Year: 19271 Days

Day: 22.8 Hours

Environment

Temp: -193 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 36,700,976 km

• M1: 156,479 km (0.06 R)
• M2: 207,343 km (0.085 R)
• M3: 280,496 km (0.116 R)
• M4: 493,374 km (0.087 R)
• M5: 694,882 km (0.111 R)
• M6: 1,010,534 km (0.063 R)
• M7: 1,148,912 km (0.066 R)
• M8: 1,418,487 km (0.12 R)
• M9: 1,707,959 km (0.071 R)
• M10: 1,987,258 km (0.087 R)
• M11: 2,311,138 km (0.092 R)
• M12: 2,525,960 km (0.102 R)
• M13: 4,128,602 km (0.059 R)
• M14: 4,465,197 km (0.056 R)
• M15: 4,655,935 km (0.087 R)
• M16: 4,732,977 km (0.098 R)
• M17: 5,045,637 km (0.113 R)
• M18: 5,364,879 km (0.072 R)
• M19: 5,690,703 km (0.095 R)
• M20: 5,939,335 km (0.034 R)
• M21: 6,533,388 km (0.107 R)
• M22: 6,837,520 km (0.089 R)
• M23: 6,969,166 km (0.097 R)
• M24: 7,549,905 km (0.028 R)
• M25: 8,099,678 km (0.113 R)
• M26: 8,662,315 km (0.046 R)
• M27: 9,334,608 km (0.08 R)
• M28: 9,677,037 km (0.101 R)
• M29: 9,874,656 km (0.111 R)
• M30: 10,023,656 km (0.117 R)
• M31: 10,173,553 km (0.103 R)
• M32: 10,374,313 km (0.119 R)
• M33: 10,831,185 km (0.079 R)
• M34: 12,777,154 km (0.101 R)
• M35: 13,762,256 km (0.058 R)
• M36: 14,432,455 km (0.059 R)
• M37: 14,828,291 km (0.078 R)
• M38: 16,212,520 km (0.034 R)
• M39: 16,742,246 km (0.115 R)
• M40: 17,397,335 km (0.075 R)
• M41: 18,671,011 km (0.046 R)
• M42: 19,040,518 km (0.088 R)
• M43: 19,661,648 km (0.067 R)
• M44: 21,693,486 km (0.061 R)
• M45: 22,537,817 km (0.108 R)
• M46: 22,799,763 km (0.113 R)
• M47: 23,392,918 km (0.099 R)
• M48: 23,525,462 km (0.06 R)
• M49: 24,325,661 km (0.078 R)
• M50: 24,729,126 km (0.115 R)
• M51: 26,089,869 km (0.043 R)
• M52: 27,404,984 km (0.095 R)
• M53: 28,105,850 km (0.05 R)
• M54: 29,739,907 km (0.089 R)
• M55: 30,171,347 km (0.052 R)
• M56: 30,387,815 km (0.1 R)
• M57: 31,550,939 km (0.088 R)
• M58: 31,697,395 km (0.099 R)
• M59: 32,580,621 km (0.081 R)
• M60: 34,823,841 km (0.102 R)
• M61: 36,193,559 km (0.079 R)
• M62: 38,828,576 km (0.111 R)
• M63: 41,204,490 km (0.11 R)
• M64: 41,604,963 km (0.081 R)
• M65: 41,845,965 km (0.097 R)
• M66: 42,006,783 km (0.098 R)
• M67: 42,490,732 km (0.08 R)
• M68: 42,895,394 km (0.078 R)
• M69: 44,773,296 km (0.113 R)
• M70: 45,020,133 km (0.091 R)
• M71: 45,102,561 km (0.114 R)
• M72: 46,511,175 km (0.098 R)
• M73: 46,928,104 km (0.098 R)
• M74: 47,430,155 km (0.115 R)
• M75: 47,514,079 km (0.091 R)
• M76: 48,439,641 km (0.083 R)
• M77: 48,524,164 km (0.09 R)
• M78: 48,693,209 km (0.109 R)
• M79: 48,862,405 km (0.042 R)
• M80: 48,947,077 km (0.081 R)
• M81: 54,117,030 km (0.103 R)
• M82: 55,878,545 km (0.087 R)
• M83: 56,055,669 km (0.04 R)
• M84: 57,390,530 km (0.103 R)
• M85: 57,927,437 km (0.114 R)
• M86: 59,276,810 km (0.095 R)
• M87: 59,457,524 km (0.051 R)
• M88: 59,819,401 km (0.102 R)
• M89: 59,910,058 km (0.089 R)
• M90: 60,727,610 km (0.088 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 707

Radius: 7.7

Gravity: 11.92 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 15.33 AU - 22.05 AU

Year: 29661 Days

Day: 17.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 36,700,976 km

• M1: 142,118 km (0.111 R)
• M2: 357,389 km (0.028 R)
• M3: 986,598 km (0.084 R)
• M4: 2,106,787 km (0.091 R)
• M5: 2,441,587 km (0.079 R)
• M6: 3,302,523 km (0.085 R)
• M7: 3,398,265 km (0.08 R)
• M8: 3,592,443 km (0.069 R)
• M9: 3,641,661 km (0.103 R)
• M10: 3,691,028 km (0.119 R)
• M11: 5,957,885 km (0.062 R)
• M12: 6,549,694 km (0.088 R)
• M13: 7,472,264 km (0.075 R)
• M14: 7,852,691 km (0.075 R)
• M15: 7,980,897 km (0.109 R)
• M16: 9,504,701 km (0.085 R)
• M17: 9,847,579 km (0.102 R)
• M18: 10,687,272 km (0.101 R)
• M19: 10,758,181 km (0.085 R)
• M20: 11,476,849 km (0.107 R)
• M21: 12,733,920 km (0.114 R)
• M22: 12,960,262 km (0.055 R)
• M23: 13,264,245 km (0.104 R)
• M24: 13,570,472 km (0.101 R)
• M25: 15,456,302 km (0.106 R)
• M26: 15,778,536 km (0.091 R)
• M27: 16,923,858 km (0.118 R)
• M28: 17,006,735 km (0.096 R)
• M29: 17,339,291 km (0.111 R)
• M30: 17,674,091 km (0.117 R)
• M31: 18,605,936 km (0.108 R)
• M32: 22,398,392 km (0.108 R)
• M33: 23,037,773 km (0.059 R)
• M34: 24,803,327 km (0.11 R)
• M35: 25,559,544 km (0.1 R)
• M36: 25,749,833 km (0.049 R)
• M37: 26,611,816 km (0.075 R)
• M38: 27,678,299 km (0.108 R)
• M39: 28,069,497 km (0.086 R)
• M40: 28,167,633 km (0.076 R)
• M41: 29,254,163 km (0.107 R)
• M42: 30,253,776 km (0.028 R)
• M43: 31,672,113 km (0.113 R)
• M44: 33,423,156 km (0.096 R)
• M45: 34,258,062 km (0.095 R)
• M46: 35,629,426 km (0.099 R)
• M47: 35,842,004 km (0.09 R)
• M48: 36,268,358 km (0.113 R)
• M49: 37,018,591 km (0.089 R)
• M50: 37,233,863 km (0.096 R)
• M51: 40,291,494 km (0.109 R)
• M52: 45,947,939 km (0.068 R)
• M53: 46,643,270 km (0.114 R)
• M54: 47,458,877 km (0.116 R)
• M55: 47,575,713 km (0.065 R)
• M56: 47,809,834 km (0.104 R)
• M57: 48,514,440 km (0.081 R)
• M58: 51,366,822 km (0.083 R)
• M59: 51,727,054 km (0.106 R)
• M60: 52,571,235 km (0.087 R)
• M61: 54,395,282 km (0.061 R)
• M62: 54,762,545 km (0.098 R)
• M63: 55,130,705 km (0.117 R)
• M64: 56,983,624 km (0.119 R)
• M65: 58,105,159 km (0.053 R)
• M66: 64,208,453 km (0.05 R)
• M67: 64,596,660 km (0.096 R)
• M68: 65,635,617 km (0.098 R)
• M69: 66,287,714 km (0.038 R)
• M70: 67,598,341 km (0.075 R)
• M71: 70,112,184 km (0.036 R)
• M72: 71,313,604 km (0.099 R)
• M73: 72,656,544 km (0.114 R)
• M74: 73,195,994 km (0.09 R)
• M75: 73,466,168 km (0.119 R)
• M76: 74,686,438 km (0.109 R)
• M77: 75,913,290 km (0.069 R)
• M78: 79,078,781 km (0.098 R)
• M79: 81,026,695 km (0.095 R)
• M80: 82,006,561 km (0.096 R)
• M81: 82,568,151 km (0.031 R)
• M82: 83,272,009 km (0.116 R)
• M83: 83,977,962 km (0.077 R)
• M84: 89,840,552 km (0.042 R)
• M85: 92,601,830 km (0.07 R)
• M86: 92,894,144 km (0.104 R)
• M87: 94,213,149 km (0.054 R)
• M88: 94,360,054 km (0.101 R)
• M89: 98,953,008 km (0.107 R)
• M90: 99,251,904 km (0.071 R)
• M91: 99,700,548 km (0.114 R)
• M92: 99,850,296 km (0.031 R)
• M93: 100,000,193 km (0.074 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 31.3

Radius: 4.6

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 17.74 AU - 21.04 AU

Year: 31343 Days

Day: 23.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 36,700,976 km

• M1: 529,876 km (0.04 R)
• M2: 622,926 km (0.098 R)
• M3: 664,514 km (0.102 R)
• M4: 1,013,825 km (0.112 R)
• M5: 1,268,590 km (0.089 R)
• M6: 1,814,622 km (0.056 R)
• M7: 1,895,106 km (0.117 R)
• M8: 2,648,331 km (0.103 R)
• M9: 3,864,263 km (0.081 R)
• M10: 5,691,301 km (0.091 R)
• M11: 7,515,049 km (0.095 R)
• M12: 8,539,495 km (0.049 R)
• M13: 9,782,953 km (0.039 R)
• M14: 10,461,828 km (0.113 R)
• M15: 10,570,436 km (0.079 R)
• M16: 11,676,563 km (0.069 R)
• M17: 15,003,918 km (0.109 R)
• M18: 18,424,474 km (0.048 R)
• M19: 20,018,439 km (0.113 R)
• M20: 20,923,057 km (0.051 R)
• M21: 22,304,594 km (0.101 R)
• M22: 25,397,380 km (0.108 R)
• M23: 25,543,388 km (0.094 R)
• M24: 30,410,255 km (0.119 R)
• M25: 30,772,432 km (0.039 R)
• M26: 31,553,033 km (0.063 R)
• M27: 32,498,342 km (0.113 R)
• M28: 33,773,215 km (0.068 R)
• M29: 36,371,730 km (0.118 R)
• M30: 36,536,138 km (0.12 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 199 - 10,850 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit