🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122

Radius: 12

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.52 AU - 0.64 AU

Year: 300 Days

Day: 11.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 14,748,566 km

• M1: 149,299 km (0.106 R)
• M2: 236,215 km (0.105 R)
• M3: 325,675 km (0.03 R)
• M4: 414,386 km (0.083 R)
• M5: 516,412 km (0.08 R)
• M6: 635,342 km (0.086 R)
• M7: 809,624 km (0.07 R)
• M8: 934,388 km (0.105 R)
• M9: 1,018,761 km (0.078 R)
• M10: 1,106,127 km (0.076 R)
• M11: 1,187,957 km (0.118 R)
• M12: 1,266,196 km (0.098 R)
• M13: 1,398,890 km (0.099 R)
• M14: 1,506,151 km (0.077 R)
• M15: 1,619,397 km (0.086 R)
• M16: 1,710,203 km (0.081 R)
• M17: 1,831,976 km (0.101 R)
• M18: 1,943,576 km (0.107 R)
• M19: 2,023,610 km (0.1 R)
• M20: 2,101,551 km (0.096 R)
• M21: 2,211,655 km (0.093 R)
• M22: 2,291,989 km (0.086 R)
• M23: 2,380,551 km (0.051 R)
• M24: 2,459,389 km (0.027 R)
• M25: 2,557,376 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 573.3

Radius: 9.7

Gravity: 6.09 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.51 AU - 0.71 AU

Year: 323 Days

Day: 13.5 Hours

Environment

Temp: -156 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 14,748,566 km

• M1: 122,221 km (0.106 R)
• M2: 182,958 km (0.116 R)
• M3: 245,191 km (0.12 R)
• M4: 339,438 km (0.044 R)
• M5: 408,851 km (0.094 R)
• M6: 475,721 km (0.102 R)
• M7: 546,930 km (0.113 R)
• M8: 619,186 km (0.039 R)
• M9: 739,761 km (0.03 R)
• M10: 817,403 km (0.091 R)
• M11: 901,926 km (0.063 R)
• M12: 1,005,298 km (0.12 R)
• M13: 1,068,428 km (0.045 R)
• M14: 1,137,093 km (0.067 R)
• M15: 1,215,782 km (0.086 R)
• M16: 1,296,266 km (0.12 R)
• M17: 1,454,091 km (0.09 R)
• M18: 1,581,399 km (0.04 R)
• M19: 1,707,660 km (0.051 R)
• M20: 1,886,280 km (0.064 R)
• M21: 2,010,595 km (0.119 R)
• M22: 2,091,528 km (0.116 R)
• M23: 2,220,332 km (0.105 R)
• M24: 2,341,207 km (0.095 R)
• M25: 2,415,856 km (0.119 R)
• M26: 2,507,709 km (0.057 R)
• M27: 2,728,366 km (0.053 R)
• M28: 2,795,685 km (0.089 R)
• M29: 2,932,268 km (0.102 R)
• M30: 3,007,216 km (0.111 R)
• M31: 3,176,711 km (0.117 R)
• M32: 3,289,508 km (0.091 R)
• M33: 3,397,667 km (0.107 R)
• M34: 3,476,355 km (0.112 R)
• M35: 3,537,541 km (0.108 R)
• M36: 3,605,009 km (0.082 R)
• M37: 3,835,540 km (0.112 R)
• M38: 4,006,829 km (0.095 R)
• M39: 4,077,440 km (0.091 R)
• M40: 4,193,677 km (0.053 R)
• M41: 4,456,072 km (0.115 R)
• M42: 4,549,271 km (0.061 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.7

Radius: 10.3

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.65 AU - 0.77 AU

Year: 406 Days

Day: 5.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 14,748,566 km

• M1: 137,780 km (0.114 R)
• M2: 215,122 km (0.083 R)
• M3: 281,842 km (0.094 R)
• M4: 349,012 km (0.05 R)
• M5: 559,496 km (0.111 R)
• M6: 658,829 km (0.068 R)
• M7: 864,676 km (0.079 R)
• M8: 999,463 km (0.114 R)
• M9: 1,187,358 km (0.052 R)
• M10: 1,314,516 km (0.107 R)
• M11: 1,411,755 km (0.108 R)
• M12: 1,506,451 km (0.062 R)
• M13: 1,582,745 km (0.04 R)
• M14: 1,691,802 km (0.057 R)
• M15: 1,760,767 km (0.044 R)
• M16: 1,825,244 km (0.045 R)
• M17: 1,901,389 km (0.115 R)
• M18: 2,012,241 km (0.112 R)
• M19: 2,102,448 km (0.106 R)
• M20: 2,240,378 km (0.093 R)
• M21: 2,316,523 km (0.045 R)
• M22: 2,399,400 km (0.109 R)
• M23: 2,483,175 km (0.045 R)
• M24: 2,549,896 km (0.092 R)
• M25: 2,753,349 km (0.079 R)
• M26: 2,879,460 km (0.119 R)
• M27: 3,065,560 km (0.095 R)
• M28: 3,255,698 km (0.088 R)
• M29: 3,335,584 km (0.111 R)
• M30: 3,538,139 km (0.12 R)
• M31: 3,634,031 km (0.116 R)
• M32: 3,710,027 km (0.08 R)
• M33: 3,779,590 km (0.095 R)
• M34: 3,934,274 km (0.079 R)
• M35: 4,105,265 km (0.076 R)
• M36: 4,351,802 km (0.106 R)
• M37: 4,551,066 km (0.06 R)
• M38: 4,670,595 km (0.105 R)
• M39: 4,997,167 km (0.114 R)
• M40: 5,128,215 km (0.09 R)
• M41: 5,331,070 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.6

Radius: 8.2

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.85 AU - 0.95 AU

Year: 579 Days

Day: 12.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 14,748,566 km

• M1: 128,205 km (0.104 R)
• M2: 206,595 km (0.026 R)
• M3: 264,190 km (0.088 R)
• M4: 353,649 km (0.07 R)
• M5: 441,912 km (0.093 R)
• M6: 528,679 km (0.082 R)
• M7: 655,987 km (0.06 R)
• M8: 718,219 km (0.071 R)
• M9: 799,601 km (0.118 R)
• M10: 860,637 km (0.101 R)
• M11: 960,119 km (0.116 R)
• M12: 1,015,919 km (0.098 R)
• M13: 1,098,647 km (0.116 R)
• M14: 1,187,209 km (0.106 R)
• M15: 1,353,861 km (0.107 R)
• M16: 1,463,516 km (0.116 R)
• M17: 1,550,432 km (0.057 R)
• M18: 1,601,894 km (0.118 R)
• M19: 1,725,611 km (0.066 R)
• M20: 1,891,665 km (0.081 R)
• M21: 1,986,809 km (0.11 R)
• M22: 2,140,446 km (0.093 R)
• M23: 2,248,007 km (0.075 R)
• M24: 2,485,718 km (0.092 R)
• M25: 2,550,793 km (0.103 R)
• M26: 2,642,796 km (0.082 R)
• M27: 2,776,237 km (0.111 R)
• M28: 2,962,337 km (0.114 R)
• M29: 3,068,552 km (0.105 R)
• M30: 3,133,776 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 772.9

Radius: 12.1

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.2 AU - 1.48 AU

Year: 1052 Days

Day: 12.2 Hours

Environment

Temp: -185 °C

Axial Tilt: 72.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 14,748,566 km

• M1: 159,771 km (0.102 R)
• M2: 258,655 km (0.116 R)
• M3: 398,678 km (0.077 R)
• M4: 572,810 km (0.111 R)
• M5: 658,829 km (0.103 R)
• M6: 749,934 km (0.107 R)
• M7: 926,160 km (0.106 R)
• M8: 1,037,611 km (0.066 R)
• M9: 1,206,208 km (0.108 R)
• M10: 1,305,690 km (0.119 R)
• M11: 1,424,321 km (0.109 R)
• M12: 1,554,771 km (0.079 R)
• M13: 1,749,846 km (0.107 R)
• M14: 2,080,757 km (0.109 R)
• M15: 2,230,205 km (0.116 R)
• M16: 2,373,520 km (0.031 R)
• M17: 2,710,115 km (0.12 R)
• M18: 2,873,925 km (0.112 R)
• M19: 3,051,647 km (0.113 R)
• M20: 3,297,885 km (0.079 R)
• M21: 3,651,534 km (0.036 R)
• M22: 3,776,000 km (0.069 R)
• M23: 3,855,885 km (0.073 R)
• M24: 4,287,924 km (0.107 R)
• M25: 4,588,615 km (0.104 R)
• M26: 4,710,987 km (0.089 R)
• M27: 5,109,515 km (0.066 R)
• M28: 5,236,374 km (0.066 R)
• M29: 5,351,415 km (0.054 R)
• M30: 5,480,219 km (0.069 R)
• M31: 5,558,010 km (0.066 R)
• M32: 5,662,429 km (0.06 R)
• M33: 5,926,020 km (0.095 R)
• M34: 6,113,167 km (0.106 R)
• M35: 6,356,414 km (0.115 R)
• M36: 6,561,662 km (0.104 R)
• M37: 6,741,478 km (0.114 R)
• M38: 7,119,811 km (0.096 R)
• M39: 7,219,144 km (0.071 R)
• M40: 7,304,565 km (0.052 R)
• M41: 8,118,377 km (0.114 R)
• M42: 8,207,238 km (0.109 R)
• M43: 8,296,548 km (0.113 R)
• M44: 8,445,997 km (0.095 R)
• M45: 8,536,055 km (0.08 R)
• M46: 8,747,586 km (0.105 R)
• M47: 8,915,136 km (0.043 R)
• M48: 9,022,098 km (0.099 R)
• M49: 9,098,991 km (0.062 R)
• M50: 9,206,851 km (0.113 R)
• M51: 9,330,569 km (0.089 R)
• M52: 9,501,709 km (0.11 R)
• M53: 9,579,799 km (0.05 R)
• M54: 9,658,188 km (0.072 R)
• M55: 9,878,546 km (0.104 R)
• M56: 10,052,977 km (0.088 R)
• M57: 10,180,584 km (0.086 R)
• M58: 10,388,824 km (0.118 R)
• M59: 10,469,457 km (0.109 R)
• M60: 10,679,642 km (0.06 R)
• M61: 10,826,099 km (0.062 R)
• M62: 11,088,045 km (0.041 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 68.8

Radius: 14.2

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.07 AU - 1.67 AU

Year: 1088 Days

Day: 14.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 14,748,566 km

• M1: 183,108 km (0.089 R)
• M2: 336,146 km (0.057 R)
• M3: 511,026 km (0.109 R)
• M4: 696,079 km (0.067 R)
• M5: 792,719 km (0.116 R)
• M6: 887,115 km (0.113 R)
• M7: 1,026,391 km (0.088 R)
• M8: 1,139,487 km (0.109 R)
• M9: 1,292,825 km (0.077 R)
• M10: 1,406,968 km (0.078 R)
• M11: 1,519,914 km (0.095 R)
• M12: 1,801,009 km (0.116 R)
• M13: 1,893,460 km (0.059 R)
• M14: 2,224,520 km (0.09 R)
• M15: 2,324,302 km (0.093 R)
• M16: 2,528,354 km (0.037 R)
• M17: 2,685,431 km (0.101 R)
• M18: 2,827,849 km (0.107 R)
• M19: 3,015,743 km (0.079 R)
• M20: 3,251,659 km (0.103 R)
• M21: 3,378,369 km (0.098 R)
• M22: 3,526,171 km (0.046 R)
• M23: 3,643,456 km (0.103 R)
• M24: 4,003,089 km (0.06 R)
• M25: 4,207,889 km (0.104 R)
• M26: 4,381,273 km (0.026 R)
• M27: 4,557,050 km (0.078 R)
• M28: 4,678,075 km (0.047 R)
• M29: 4,923,116 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140

Radius: 12.9

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.59 AU - 1.73 AU

Year: 1451 Days

Day: 8.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 14,748,566 km

• M1: 164,857 km (0.068 R)
• M2: 258,954 km (0.097 R)
• M3: 352,901 km (0.091 R)
• M4: 477,816 km (0.116 R)
• M5: 564,582 km (0.108 R)
• M6: 658,231 km (0.085 R)
• M7: 758,162 km (0.066 R)
• M8: 848,370 km (0.101 R)
• M9: 937,530 km (0.058 R)
• M10: 1,069,326 km (0.1 R)
• M11: 1,160,879 km (0.106 R)
• M12: 1,303,745 km (0.11 R)
• M13: 1,421,180 km (0.094 R)
• M14: 1,627,475 km (0.092 R)
• M15: 1,748,051 km (0.041 R)
• M16: 1,920,687 km (0.086 R)
• M17: 2,179,342 km (0.118 R)
• M18: 2,268,203 km (0.104 R)
• M19: 2,388,629 km (0.094 R)
• M20: 2,612,577 km (0.102 R)
• M21: 2,707,273 km (0.096 R)
• M22: 3,039,679 km (0.099 R)
• M23: 3,164,743 km (0.034 R)
• M24: 3,317,034 km (0.058 R)
• M25: 3,480,544 km (0.076 R)
• M26: 3,646,747 km (0.106 R)
• M27: 3,914,677 km (0.105 R)
• M28: 4,014,459 km (0.057 R)
• M29: 4,170,489 km (0.098 R)
• M30: 4,338,039 km (0.104 R)
• M31: 4,507,683 km (0.118 R)
• M32: 4,641,274 km (0.091 R)
• M33: 4,844,129 km (0.089 R)
• M34: 5,000,608 km (0.112 R)
• M35: 5,228,745 km (0.077 R)
• M36: 5,338,998 km (0.092 R)
• M37: 5,500,863 km (0.082 R)
• M38: 5,633,557 km (0.074 R)
• M39: 6,048,541 km (0.107 R)
• M40: 6,334,423 km (0.09 R)
• M41: 6,592,180 km (0.112 R)
• M42: 6,711,559 km (0.048 R)
• M43: 6,809,695 km (0.062 R)
• M44: 7,073,885 km (0.119 R)
• M45: 7,601,068 km (0.087 R)
• M46: 7,726,431 km (0.032 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.2

Radius: 11.1

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.44 AU - 3.6 AU

Year: 3560 Days

Day: 9 Hours

Environment

Temp: -209 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 14,748,566 km

• M1: 172,486 km (0.1 R)
• M2: 254,167 km (0.113 R)
• M3: 347,366 km (0.054 R)
• M4: 448,345 km (0.089 R)
• M5: 844,779 km (0.079 R)
• M6: 1,041,351 km (0.046 R)
• M7: 1,119,142 km (0.104 R)
• M8: 1,267,094 km (0.042 R)
• M9: 1,378,993 km (0.106 R)
• M10: 1,940,284 km (0.099 R)
• M11: 2,153,611 km (0.077 R)
• M12: 2,322,806 km (0.116 R)
• M13: 2,531,944 km (0.104 R)
• M14: 2,603,003 km (0.081 R)
• M15: 2,802,118 km (0.066 R)
• M16: 3,196,159 km (0.093 R)
• M17: 3,350,992 km (0.116 R)
• M18: 3,508,369 km (0.051 R)
• M19: 3,912,583 km (0.083 R)
• M20: 3,995,161 km (0.102 R)
• M21: 4,568,420 km (0.079 R)
• M22: 4,875,993 km (0.056 R)
• M23: 5,372,957 km (0.114 R)
• M24: 6,244,963 km (0.066 R)
• M25: 6,390,522 km (0.083 R)
• M26: 6,685,230 km (0.068 R)
• M27: 6,834,080 km (0.077 R)
• M28: 7,034,541 km (0.088 R)
• M29: 7,313,242 km (0.107 R)
• M30: 8,598,586 km (0.104 R)
• M31: 8,760,751 km (0.103 R)
• M32: 8,869,359 km (0.09 R)
• M33: 9,308,728 km (0.119 R)
• M34: 9,670,904 km (0.116 R)
• M35: 10,009,294 km (0.114 R)
• M36: 10,495,338 km (0.06 R)
• M37: 11,729,221 km (0.09 R)
• M38: 11,969,475 km (0.045 R)
• M39: 12,150,788 km (0.083 R)
• M40: 12,638,477 km (0.118 R)
• M41: 12,915,682 km (0.072 R)
• M42: 13,917,688 km (0.049 R)
• M43: 14,331,775 km (0.078 R)
• M44: 14,782,364 km (0.048 R)
• M45: 14,911,916 km (0.111 R)
• M46: 15,009,454 km (0.075 R)
• M47: 15,895,971 km (0.105 R)
• M48: 16,062,024 km (0.071 R)
• M49: 16,328,907 km (0.116 R)
• M50: 17,070,463 km (0.058 R)
• M51: 17,582,238 km (0.1 R)
• M52: 17,753,976 km (0.058 R)
• M53: 18,203,219 km (0.08 R)
• M54: 18,272,632 km (0.05 R)
• M55: 18,621,195 km (0.04 R)
• M56: 19,077,468 km (0.087 R)
• M57: 19,858,220 km (0.093 R)
• M58: 20,037,139 km (0.094 R)
• M59: 20,216,507 km (0.114 R)
• M60: 21,048,720 km (0.1 R)
• M61: 21,194,727 km (0.104 R)
• M62: 21,671,196 km (0.078 R)
• M63: 21,855,351 km (0.086 R)
• M64: 22,077,055 km (0.086 R)
• M65: 23,196,945 km (0.053 R)
• M66: 23,309,891 km (0.037 R)
• M67: 23,612,229 km (0.112 R)
• M68: 23,687,925 km (0.083 R)
• M69: 24,373,383 km (0.046 R)
• M70: 24,834,144 km (0.091 R)
• M71: 25,142,765 km (0.03 R)
• M72: 25,491,627 km (0.112 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125.2

Radius: 8

Gravity: 1.96 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 3.1 AU - 3.42 AU

Year: 3992 Days

Day: 11.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 14,748,566 km

• M1: 171,888 km (0.102 R)
• M2: 273,166 km (0.077 R)
• M3: 495,019 km (0.107 R)
• M4: 548,875 km (0.029 R)
• M5: 670,797 km (0.067 R)
• M6: 976,126 km (0.086 R)
• M7: 1,144,424 km (0.078 R)
• M8: 1,265,149 km (0.07 R)
• M9: 1,380,340 km (0.086 R)
• M10: 1,499,120 km (0.079 R)
• M11: 1,570,030 km (0.119 R)
• M12: 1,930,561 km (0.084 R)
• M13: 2,131,919 km (0.051 R)
• M14: 2,246,661 km (0.035 R)
• M15: 2,701,738 km (0.091 R)
• M16: 2,826,203 km (0.107 R)
• M17: 2,965,329 km (0.026 R)
• M18: 3,423,248 km (0.033 R)
• M19: 3,476,954 km (0.08 R)
• M20: 3,722,444 km (0.111 R)
• M21: 3,847,208 km (0.1 R)
• M22: 3,987,531 km (0.069 R)
• M23: 4,058,441 km (0.115 R)
• M24: 4,331,307 km (0.101 R)
• M25: 4,506,935 km (0.116 R)
• M26: 4,834,704 km (0.062 R)
• M27: 4,971,137 km (0.114 R)
• M28: 5,124,176 km (0.073 R)
• M29: 5,232,186 km (0.049 R)
• M30: 5,325,385 km (0.1 R)
• M31: 5,434,891 km (0.108 R)
• M32: 5,608,424 km (0.096 R)
• M33: 5,977,183 km (0.09 R)
• M34: 6,856,818 km (0.11 R)
• M35: 7,147,487 km (0.063 R)
• M36: 7,251,009 km (0.091 R)
• M37: 7,442,195 km (0.096 R)
• M38: 7,989,873 km (0.079 R)
• M39: 8,642,119 km (0.106 R)
• M40: 8,789,473 km (0.049 R)
• M41: 8,919,025 km (0.089 R)
• M42: 9,030,625 km (0.07 R)
• M43: 9,443,665 km (0.06 R)
• M44: 9,500,362 km (0.074 R)
• M45: 10,074,669 km (0.109 R)
• M46: 10,307,592 km (0.104 R)
• M47: 10,483,370 km (0.045 R)
• M48: 10,699,689 km (0.07 R)
• M49: 10,818,170 km (0.084 R)
• M50: 10,937,250 km (0.054 R)
• M51: 11,216,699 km (0.12 R)
• M52: 11,498,392 km (0.04 R)
• M53: 11,701,097 km (0.064 R)
• M54: 12,233,815 km (0.11 R)
• M55: 13,005,291 km (0.111 R)
• M56: 13,152,944 km (0.115 R)
• M57: 14,029,438 km (0.118 R)
• M58: 14,246,056 km (0.104 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 220 - 18,498 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit