🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.45 AU - 0.63 AU

Year: 144 Days

Day: 24.4 Hours

Environment

Temp: 220 °C

Axial Tilt: 14.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.52 AU - 2.34 AU

Year: 974 Days

Day: 16.1 Hours

Environment

Temp: -64 °C

Axial Tilt: 3.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 2.15 AU - 2.59 AU

Year: 1326 Days

Day: 15.6 Hours

Environment

Temp: -80 °C

Axial Tilt: 20.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.44

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.25 AU - 2.77 AU

Year: 1445 Days

Day: 36.1 Hours

Environment

Temp: -89 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 76,013,213 km

• M1: 1,339,350 km (0.034 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 2.67 AU - 3.57 AU

Year: 2003 Days

Day: 31.8 Hours

Environment

Temp: -102 °C

Axial Tilt: 14.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.3

Radius: 13.7

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 7.37 AU - 8.53 AU

Year: 8147 Days

Day: 9.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 76,013,213 km

• M1: 287,228 km (0.077 R)
• M2: 540,946 km (0.085 R)
• M3: 639,830 km (0.078 R)
• M4: 761,902 km (0.074 R)
• M5: 1,560,904 km (0.102 R)
• M6: 2,508,756 km (0.062 R)
• M7: 3,162,349 km (0.085 R)
• M8: 3,299,381 km (0.051 R)
• M9: 3,410,383 km (0.112 R)
• M10: 3,693,721 km (0.068 R)
• M11: 3,867,404 km (0.099 R)
• M12: 5,451,795 km (0.106 R)
• M13: 5,952,499 km (0.098 R)
• M14: 6,643,193 km (0.067 R)
• M15: 6,962,435 km (0.045 R)
• M16: 7,950,080 km (0.066 R)
• M17: 8,213,372 km (0.107 R)
• M18: 8,365,064 km (0.096 R)
• M19: 8,479,507 km (0.109 R)
• M20: 8,632,844 km (0.119 R)
• M21: 8,787,229 km (0.069 R)
• M22: 9,334,608 km (0.053 R)
• M23: 9,493,182 km (0.078 R)
• M24: 9,652,503 km (0.09 R)
• M25: 11,421,349 km (0.079 R)
• M26: 12,277,796 km (0.07 R)
• M27: 12,408,096 km (0.054 R)
• M28: 13,022,046 km (0.113 R)
• M29: 13,871,163 km (0.097 R)
• M30: 14,097,655 km (0.104 R)
• M31: 14,416,747 km (0.099 R)
• M32: 15,108,637 km (0.05 R)
• M33: 15,388,385 km (0.1 R)
• M34: 15,575,981 km (0.087 R)
• M35: 15,764,175 km (0.082 R)
• M36: 16,142,957 km (0.026 R)
• M37: 16,476,859 km (0.09 R)
• M38: 16,620,772 km (0.114 R)
• M39: 16,716,814 km (0.069 R)
• M40: 17,103,076 km (0.072 R)
• M41: 17,248,784 km (0.111 R)
• M42: 17,786,140 km (0.107 R)
• M43: 18,927,871 km (0.12 R)
• M44: 20,658,568 km (0.03 R)
• M45: 22,333,466 km (0.061 R)
• M46: 23,079,959 km (0.036 R)
• M47: 23,834,531 km (0.12 R)
• M48: 23,942,990 km (0.098 R)
• M49: 24,160,505 km (0.116 R)
• M50: 25,923,516 km (0.111 R)
• M51: 26,989,849 km (0.094 R)
• M52: 27,216,191 km (0.102 R)
• M53: 27,329,586 km (0.051 R)
• M54: 28,702,595 km (0.039 R)
• M55: 29,281,390 km (0.091 R)
• M56: 29,980,909 km (0.073 R)
• M57: 30,273,971 km (0.117 R)
• M58: 30,568,081 km (0.062 R)
• M59: 31,277,773 km (0.057 R)
• M60: 32,232,357 km (0.113 R)
• M61: 32,713,314 km (0.113 R)
• M62: 33,439,163 km (0.052 R)
• M63: 34,968,353 km (0.039 R)
• M64: 35,524,558 km (0.065 R)
• M65: 36,083,605 km (0.096 R)
• M66: 36,208,220 km (0.078 R)
• M67: 37,462,299 km (0.037 R)
• M68: 39,049,981 km (0.083 R)
• M69: 40,142,195 km (0.108 R)
• M70: 40,529,953 km (0.11 R)
• M71: 40,789,206 km (0.101 R)
• M72: 41,374,582 km (0.083 R)
• M73: 42,422,216 km (0.1 R)
• M74: 42,751,331 km (0.063 R)
• M75: 42,949,249 km (0.115 R)
• M76: 43,147,467 km (0.092 R)
• M77: 44,009,898 km (0.077 R)
• M78: 44,143,040 km (0.095 R)
• M79: 44,343,053 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.2

Radius: 12.7

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 8.85 AU - 9.39 AU

Year: 10010 Days

Day: 8.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 76,013,213 km

• M1: 158,723 km (0.104 R)
• M2: 289,472 km (0.06 R)
• M3: 599,139 km (0.096 R)
• M4: 749,037 km (0.104 R)
• M5: 974,630 km (0.119 R)
• M6: 1,704,369 km (0.112 R)
• M7: 1,909,766 km (0.107 R)
• M8: 2,040,365 km (0.106 R)
• M9: 2,592,681 km (0.102 R)
• M10: 2,811,692 km (0.087 R)
• M11: 3,151,878 km (0.109 R)
• M12: 3,748,324 km (0.11 R)
• M13: 4,080,880 km (0.106 R)
• M14: 4,663,863 km (0.08 R)
• M15: 4,841,735 km (0.083 R)
• M16: 5,021,851 km (0.114 R)
• M17: 5,112,806 km (0.103 R)
• M18: 5,273,325 km (0.118 R)
• M19: 5,528,838 km (0.116 R)
• M20: 6,270,993 km (0.079 R)
• M21: 6,691,363 km (0.103 R)
• M22: 6,942,837 km (0.083 R)
• M23: 8,193,625 km (0.106 R)
• M24: 8,327,964 km (0.089 R)
• M25: 8,544,432 km (0.051 R)
• M26: 8,680,566 km (0.106 R)
• M27: 8,762,695 km (0.064 R)
• M28: 9,597,751 km (0.116 R)
• M29: 9,682,722 km (0.072 R)
• M30: 9,824,840 km (0.083 R)
• M31: 11,104,949 km (0.11 R)
• M32: 12,007,772 km (0.118 R)
• M33: 12,221,847 km (0.084 R)
• M34: 14,204,767 km (0.092 R)
• M35: 15,748,168 km (0.075 R)
• M36: 16,218,354 km (0.07 R)
• M37: 17,241,005 km (0.099 R)
• M38: 17,795,116 km (0.091 R)
• M39: 18,566,442 km (0.114 R)
• M40: 22,058,206 km (0.028 R)
• M41: 22,395,848 km (0.111 R)
• M42: 24,263,727 km (0.102 R)
• M43: 24,495,903 km (0.117 R)
• M44: 24,651,036 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.6

Radius: 9

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 7.48 AU - 11.52 AU

Year: 10642 Days

Day: 7.3 Hours

Environment

Temp: -178 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 76,013,213 km

• M1: 156,779 km (0.104 R)
• M2: 533,167 km (0.109 R)
• M3: 599,289 km (0.067 R)
• M4: 1,849,030 km (0.073 R)
• M5: 2,738,838 km (0.064 R)
• M6: 2,955,306 km (0.114 R)
• M7: 3,353,984 km (0.055 R)
• M8: 3,430,728 km (0.105 R)
• M9: 3,585,861 km (0.084 R)
• M10: 3,664,400 km (0.106 R)
• M11: 3,876,380 km (0.089 R)
• M12: 4,229,581 km (0.061 R)
• M13: 4,312,607 km (0.111 R)
• M14: 4,452,182 km (0.106 R)
• M15: 4,564,829 km (0.1 R)
• M16: 4,879,733 km (0.104 R)
• M17: 4,966,949 km (0.066 R)
• M18: 5,261,058 km (0.084 R)
• M19: 5,350,517 km (0.057 R)
• M20: 5,682,625 km (0.107 R)
• M21: 6,686,426 km (0.105 R)
• M22: 7,308,155 km (0.077 R)
• M23: 7,541,827 km (0.088 R)
• M24: 8,016,800 km (0.111 R)
• M25: 8,466,491 km (0.086 R)
• M26: 8,782,592 km (0.116 R)
• M27: 8,853,352 km (0.097 R)
• M28: 9,066,828 km (0.113 R)
• M29: 9,138,336 km (0.108 R)
• M30: 9,282,099 km (0.079 R)
• M31: 9,390,258 km (0.087 R)
• M32: 9,535,219 km (0.076 R)
• M33: 9,790,732 km (0.028 R)
• M34: 10,308,490 km (0.062 R)
• M35: 11,025,513 km (0.082 R)
• M36: 11,101,808 km (0.115 R)
• M37: 11,216,848 km (0.1 R)
• M38: 11,447,827 km (0.106 R)
• M39: 12,111,144 km (0.093 R)
• M40: 12,387,900 km (0.09 R)
• M41: 13,926,365 km (0.037 R)
• M42: 14,009,093 km (0.108 R)
• M43: 14,424,675 km (0.091 R)
• M44: 15,481,584 km (0.113 R)
• M45: 15,567,154 km (0.114 R)
• M46: 16,475,662 km (0.112 R)
• M47: 16,914,433 km (0.068 R)
• M48: 17,046,827 km (0.114 R)
• M49: 17,312,513 km (0.046 R)
• M50: 17,803,343 km (0.058 R)
• M51: 18,661,886 km (0.068 R)
• M52: 18,798,618 km (0.046 R)
• M53: 19,027,353 km (0.099 R)
• M54: 19,533,742 km (0.095 R)
• M55: 19,904,894 km (0.025 R)
• M56: 19,998,094 km (0.054 R)
• M57: 20,091,293 km (0.042 R)
• M58: 21,032,114 km (0.092 R)
• M59: 21,843,084 km (0.091 R)
• M60: 21,987,297 km (0.118 R)
• M61: 22,228,299 km (0.056 R)
• M62: 22,567,288 km (0.101 R)
• M63: 22,664,377 km (0.117 R)
• M64: 22,956,691 km (0.081 R)
• M65: 23,250,052 km (0.1 R)
• M66: 24,237,398 km (0.03 R)
• M67: 24,486,479 km (0.118 R)
• M68: 25,137,678 km (0.071 R)
• M69: 25,490,729 km (0.08 R)
• M70: 25,794,712 km (0.104 R)
• M71: 26,099,892 km (0.096 R)
• M72: 26,201,917 km (0.106 R)
• M73: 26,355,106 km (0.067 R)
• M74: 26,662,380 km (0.072 R)
• M75: 27,695,353 km (0.063 R)
• M76: 29,428,444 km (0.076 R)
• M77: 29,534,509 km (0.032 R)
• M78: 30,013,821 km (0.08 R)
• M79: 31,088,083 km (0.116 R)
• M80: 31,847,591 km (0.042 R)
• M81: 32,174,912 km (0.026 R)
• M82: 32,613,084 km (0.057 R)
• M83: 35,622,395 km (0.032 R)
• M84: 36,189,370 km (0.102 R)
• M85: 37,159,961 km (0.066 R)
• M86: 37,619,676 km (0.102 R)
• M87: 38,023,590 km (0.101 R)
• M88: 38,428,851 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 652.4

Radius: 8.8

Gravity: 8.42 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 8.71 AU - 12.99 AU

Year: 12989 Days

Day: 11.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 76,013,213 km

• M1: 135,536 km (0.112 R)
• M2: 202,256 km (0.117 R)
• M3: 279,898 km (0.115 R)
• M4: 476,320 km (0.093 R)
• M5: 832,213 km (0.064 R)
• M6: 912,397 km (0.083 R)
• M7: 1,124,976 km (0.103 R)
• M8: 1,330,075 km (0.108 R)
• M9: 1,572,124 km (0.105 R)
• M10: 1,988,754 km (0.047 R)
• M11: 2,070,584 km (0.058 R)
• M12: 2,153,611 km (0.102 R)
• M13: 2,735,846 km (0.106 R)
• M14: 3,528,715 km (0.111 R)
• M15: 4,036,899 km (0.084 R)
• M16: 4,496,014 km (0.101 R)
• M17: 5,046,235 km (0.116 R)
• M18: 5,196,581 km (0.081 R)
• M19: 5,348,423 km (0.117 R)
• M20: 5,656,445 km (0.07 R)
• M21: 6,330,383 km (0.074 R)
• M22: 7,155,565 km (0.074 R)
• M23: 7,537,938 km (0.05 R)
• M24: 7,753,358 km (0.031 R)
• M25: 8,950,740 km (0.057 R)
• M26: 9,041,695 km (0.084 R)
• M27: 9,968,604 km (0.085 R)
• M28: 10,347,685 km (0.066 R)
• M29: 10,539,020 km (0.082 R)
• M30: 11,267,113 km (0.117 R)
• M31: 11,612,535 km (0.027 R)
• M32: 12,262,986 km (0.114 R)
• M33: 12,364,114 km (0.095 R)
• M34: 12,771,469 km (0.119 R)
• M35: 14,178,587 km (0.107 R)
• M36: 14,981,479 km (0.109 R)
• M37: 15,197,947 km (0.085 R)
• M38: 15,361,158 km (0.053 R)
• M39: 15,853,934 km (0.1 R)
• M40: 15,908,986 km (0.119 R)
• M41: 17,876,796 km (0.11 R)
• M42: 18,801,610 km (0.102 R)
• M43: 18,976,789 km (0.092 R)
• M44: 19,979,544 km (0.073 R)
• M45: 20,517,348 km (0.061 R)
• M46: 21,181,114 km (0.12 R)
• M47: 21,607,318 km (0.092 R)
• M48: 24,286,167 km (0.117 R)
• M49: 24,988,080 km (0.053 R)
• M50: 26,151,204 km (0.114 R)
• M51: 26,804,946 km (0.094 R)
• M52: 27,265,708 km (0.096 R)
• M53: 27,397,952 km (0.115 R)
• M54: 27,862,155 km (0.102 R)
• M55: 27,928,576 km (0.041 R)
• M56: 30,017,112 km (0.103 R)
• M57: 30,290,278 km (0.11 R)
• M58: 30,564,191 km (0.106 R)
• M59: 30,839,003 km (0.096 R)
• M60: 31,045,597 km (0.067 R)
• M61: 31,529,546 km (0.048 R)
• M62: 32,644,948 km (0.11 R)
• M63: 34,128,510 km (0.095 R)
• M64: 36,431,121 km (0.092 R)
• M65: 36,576,679 km (0.095 R)
• M66: 37,087,706 km (0.102 R)
• M67: 38,634,996 km (0.076 R)
• M68: 38,709,197 km (0.083 R)
• M69: 38,932,098 km (0.076 R)
• M70: 39,379,246 km (0.082 R)
• M71: 40,655,166 km (0.109 R)
• M72: 41,412,131 km (0.027 R)
• M73: 42,020,995 km (0.109 R)
• M74: 44,486,068 km (0.071 R)
• M75: 45,500,791 km (0.113 R)
• M76: 45,657,569 km (0.114 R)
• M77: 46,207,790 km (0.103 R)
• M78: 46,760,106 km (0.118 R)
• M79: 46,997,517 km (0.066 R)
• M80: 50,120,074 km (0.117 R)
• M81: 50,525,334 km (0.065 R)
• M82: 52,649,624 km (0.078 R)
• M83: 52,731,903 km (0.115 R)
• M84: 53,971,321 km (0.109 R)
• M85: 54,137,375 km (0.116 R)
• M86: 56,142,435 km (0.064 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 983.9

Radius: 6.8

Gravity: 21.28 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 11.21 AU - 14.41 AU

Year: 16663 Days

Day: 24.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 76,013,213 km

• M1: 366,814 km (0.113 R)
• M2: 785,389 km (0.092 R)
• M3: 933,491 km (0.058 R)
• M4: 1,200,523 km (0.119 R)
• M5: 1,371,962 km (0.114 R)
• M6: 1,582,147 km (0.106 R)
• M7: 2,168,870 km (0.115 R)
• M8: 2,237,984 km (0.084 R)
• M9: 2,521,771 km (0.097 R)
• M10: 2,816,928 km (0.115 R)
• M11: 4,104,666 km (0.106 R)
• M12: 4,233,620 km (0.045 R)
• M13: 4,363,919 km (0.045 R)
• M14: 5,081,241 km (0.097 R)
• M15: 5,219,919 km (0.101 R)
• M16: 5,359,793 km (0.072 R)
• M17: 5,786,745 km (0.111 R)
• M18: 5,931,406 km (0.042 R)
• M19: 7,391,481 km (0.09 R)
• M20: 8,350,852 km (0.103 R)
• M21: 9,632,607 km (0.081 R)
• M22: 10,150,814 km (0.096 R)
• M23: 11,576,182 km (0.091 R)
• M24: 12,126,852 km (0.078 R)
• M25: 14,087,631 km (0.088 R)
• M26: 14,347,782 km (0.04 R)
• M27: 16,212,520 km (0.088 R)
• M28: 16,280,587 km (0.106 R)
• M29: 17,590,615 km (0.11 R)
• M30: 19,654,467 km (0.119 R)
• M31: 19,872,282 km (0.095 R)
• M32: 20,604,264 km (0.091 R)
• M33: 20,899,421 km (0.079 R)
• M34: 21,494,222 km (0.045 R)
• M35: 21,943,764 km (0.066 R)
• M36: 22,396,596 km (0.118 R)
• M37: 22,624,135 km (0.112 R)
• M38: 22,852,421 km (0.036 R)
• M39: 23,696,153 km (0.034 R)
• M40: 24,471,968 km (0.07 R)
• M41: 25,651,248 km (0.112 R)
• M42: 25,809,821 km (0.066 R)
• M43: 27,252,244 km (0.096 R)
• M44: 27,414,109 km (0.109 R)
• M45: 28,228,221 km (0.116 R)
• M46: 29,630,401 km (0.09 R)
• M47: 30,047,181 km (0.096 R)
• M48: 30,465,756 km (0.094 R)
• M49: 32,330,793 km (0.12 R)
• M50: 32,502,082 km (0.116 R)
• M51: 33,276,999 km (0.077 R)
• M52: 33,623,318 km (0.076 R)
• M53: 36,793,895 km (0.073 R)
• M54: 39,325,091 km (0.071 R)
• M55: 40,519,182 km (0.073 R)
• M56: 41,538,990 km (0.06 R)
• M57: 41,632,040 km (0.091 R)
• M58: 43,037,213 km (0.077 R)
• M59: 43,792,981 km (0.086 R)
• M60: 45,221,791 km (0.088 R)
• M61: 46,279,298 km (0.111 R)
• M62: 46,375,789 km (0.093 R)
• M63: 47,344,884 km (0.06 R)
• M64: 47,539,511 km (0.093 R)
• M65: 47,636,899 km (0.088 R)
• M66: 47,734,437 km (0.116 R)
• M67: 47,831,974 km (0.105 R)
• M68: 48,222,874 km (0.101 R)
• M69: 50,291,962 km (0.071 R)
• M70: 53,601,815 km (0.076 R)
• M71: 54,007,674 km (0.033 R)
• M72: 55,129,359 km (0.083 R)
• M73: 55,436,483 km (0.078 R)
• M74: 55,641,731 km (0.081 R)
• M75: 56,155,600 km (0.097 R)
• M76: 57,810,751 km (0.098 R)
• M77: 58,958,017 km (0.076 R)
• M78: 60,218,080 km (0.076 R)
• M79: 60,323,397 km (0.114 R)
• M80: 62,551,058 km (0.119 R)
• M81: 63,299,646 km (0.078 R)
• M82: 64,481,918 km (0.119 R)
• M83: 64,697,638 km (0.115 R)
• M84: 65,562,912 km (0.086 R)
• M85: 66,432,076 km (0.105 R)
• M86: 66,650,040 km (0.097 R)
• M87: 66,868,154 km (0.096 R)
• M88: 68,621,740 km (0.1 R)
• M89: 68,841,948 km (0.079 R)
• M90: 70,501,437 km (0.089 R)
• M91: 71,057,493 km (0.109 R)
• M92: 72,285,990 km (0.093 R)

Kuiper Belt

Range: 30.2 - 46.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 259 - 11,528 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit