🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.7

Radius: 14.3

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.5 AU - 0.58 AU

Year: 265 Days

Day: 8.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 51,390,031 km

• M1: 178,919 km (0.048 R)
• M2: 275,260 km (0.043 R)
• M3: 403,316 km (0.099 R)
• M4: 568,322 km (0.075 R)
• M5: 668,852 km (0.084 R)
• M6: 757,863 km (0.088 R)
• M7: 871,557 km (0.077 R)
• M8: 967,300 km (0.117 R)
• M9: 1,144,573 km (0.119 R)
• M10: 1,317,508 km (0.082 R)
• M11: 1,409,511 km (0.094 R)
• M12: 1,503,907 km (0.086 R)
• M13: 1,682,078 km (0.099 R)
• M14: 1,796,072 km (0.026 R)
• M15: 1,967,511 km (0.062 R)
• M16: 2,116,361 km (0.112 R)
• M17: 2,342,104 km (0.037 R)
• M18: 2,470,459 km (0.104 R)
• M19: 2,560,667 km (0.061 R)
• M20: 2,677,802 km (0.118 R)
• M21: 2,801,819 km (0.063 R)
• M22: 2,943,936 km (0.083 R)
• M23: 3,093,834 km (0.102 R)
• M24: 3,279,335 km (0.032 R)
• M25: 3,401,257 km (0.115 R)
• M26: 3,598,726 km (0.067 R)
• M27: 3,788,416 km (0.058 R)
• M28: 3,887,450 km (0.094 R)
• M29: 4,022,836 km (0.071 R)
• M30: 4,111,997 km (0.084 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.1

Radius: 13.5

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.68 AU - 0.98 AU

Year: 504 Days

Day: 5.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 51,390,031 km

• M1: 179,667 km (0.072 R)
• M2: 296,204 km (0.114 R)
• M3: 386,860 km (0.078 R)
• M4: 484,398 km (0.106 R)
• M5: 599,289 km (0.091 R)
• M6: 696,677 km (0.038 R)
• M7: 820,694 km (0.095 R)
• M8: 928,105 km (0.086 R)
• M9: 1,033,422 km (0.083 R)
• M10: 1,127,818 km (0.073 R)
• M11: 1,225,356 km (0.091 R)
• M12: 1,309,729 km (0.119 R)
• M13: 1,400,386 km (0.072 R)
• M14: 1,527,693 km (0.084 R)
• M15: 1,637,049 km (0.093 R)
• M16: 1,739,973 km (0.11 R)
• M17: 1,849,778 km (0.116 R)
• M18: 2,047,845 km (0.105 R)
• M19: 2,139,848 km (0.109 R)
• M20: 2,258,180 km (0.103 R)
• M21: 2,445,028 km (0.066 R)
• M22: 2,705,777 km (0.103 R)
• M23: 2,796,583 km (0.112 R)
• M24: 2,910,277 km (0.105 R)
• M25: 3,058,678 km (0.098 R)
• M26: 3,153,374 km (0.113 R)
• M27: 3,266,170 km (0.113 R)
• M28: 3,368,944 km (0.104 R)
• M29: 3,525,124 km (0.101 R)
• M30: 3,618,772 km (0.105 R)
• M31: 3,731,120 km (0.066 R)
• M32: 3,898,820 km (0.094 R)
• M33: 4,026,427 km (0.047 R)
• M34: 4,130,696 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.2

Radius: 13.4

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.83 AU - 0.97 AU

Year: 569 Days

Day: 6.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 51,390,031 km

• M1: 169,195 km (0.117 R)
• M2: 265,536 km (0.041 R)
• M3: 384,018 km (0.091 R)
• M4: 475,871 km (0.046 R)
• M5: 561,740 km (0.109 R)
• M6: 680,820 km (0.102 R)
• M7: 809,773 km (0.101 R)
• M8: 937,829 km (0.075 R)
• M9: 1,160,431 km (0.12 R)
• M10: 1,295,817 km (0.048 R)
• M11: 1,521,710 km (0.053 R)
• M12: 1,664,875 km (0.085 R)
• M13: 1,819,409 km (0.114 R)
• M14: 1,918,443 km (0.091 R)
• M15: 2,170,964 km (0.046 R)
• M16: 2,507,560 km (0.11 R)
• M17: 2,693,659 km (0.098 R)
• M18: 2,807,503 km (0.116 R)
• M19: 2,930,772 km (0.062 R)
• M20: 3,071,693 km (0.12 R)
• M21: 3,190,923 km (0.086 R)
• M22: 3,336,033 km (0.106 R)
• M23: 3,475,159 km (0.113 R)
• M24: 3,616,379 km (0.086 R)
• M25: 3,700,303 km (0.076 R)
• M26: 3,793,353 km (0.12 R)
• M27: 3,895,828 km (0.113 R)
• M28: 4,121,122 km (0.038 R)
• M29: 4,208,936 km (0.074 R)
• M30: 4,332,953 km (0.068 R)
• M31: 4,458,166 km (0.043 R)
• M32: 4,657,580 km (0.052 R)
• M33: 4,887,662 km (0.076 R)
• M34: 5,197,180 km (0.095 R)
• M35: 5,349,620 km (0.076 R)
• M36: 5,649,264 km (0.053 R)
• M37: 5,806,043 km (0.083 R)
• M38: 6,014,134 km (0.103 R)
• M39: 6,224,618 km (0.089 R)
• M40: 6,325,896 km (0.081 R)
• M41: 6,417,300 km (0.11 R)
• M42: 6,735,943 km (0.071 R)
• M43: 6,850,236 km (0.117 R)
• M44: 7,017,636 km (0.056 R)
• M45: 7,175,911 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.8

Radius: 12.3

Gravity: 6.02 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.89 AU - 1.13 AU

Year: 677 Days

Day: 11.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 51,390,031 km

• M1: 177,273 km (0.097 R)
• M2: 289,023 km (0.074 R)
• M3: 574,905 km (0.094 R)
• M4: 708,645 km (0.102 R)
• M5: 793,467 km (0.052 R)
• M6: 893,548 km (0.077 R)
• M7: 992,582 km (0.113 R)
• M8: 1,070,971 km (0.101 R)
• M9: 1,164,320 km (0.067 R)
• M10: 1,339,649 km (0.114 R)
• M11: 1,427,313 km (0.101 R)
• M12: 1,566,290 km (0.099 R)
• M13: 1,644,679 km (0.077 R)
• M14: 1,768,696 km (0.06 R)
• M15: 1,972,298 km (0.056 R)
• M16: 2,112,322 km (0.045 R)
• M17: 2,320,712 km (0.078 R)
• M18: 2,444,130 km (0.087 R)
• M19: 2,595,224 km (0.116 R)
• M20: 2,898,010 km (0.098 R)
• M21: 3,094,133 km (0.071 R)
• M22: 3,267,217 km (0.055 R)
• M23: 3,368,944 km (0.114 R)
• M24: 3,471,718 km (0.118 R)
• M25: 4,100,627 km (0.093 R)
• M26: 4,362,124 km (0.08 R)
• M27: 4,639,628 km (0.062 R)
• M28: 4,891,252 km (0.106 R)
• M29: 5,029,331 km (0.095 R)
• M30: 5,277,065 km (0.118 R)
• M31: 5,364,131 km (0.082 R)
• M32: 5,706,112 km (0.104 R)
• M33: 5,919,438 km (0.104 R)
• M34: 6,158,196 km (0.104 R)
• M35: 6,284,457 km (0.115 R)
• M36: 6,516,483 km (0.087 R)
• M37: 6,692,261 km (0.101 R)
• M38: 6,845,898 km (0.091 R)
• M39: 7,024,667 km (0.105 R)
• M40: 7,205,082 km (0.12 R)
• M41: 7,521,332 km (0.099 R)
• M42: 7,631,885 km (0.118 R)
• M43: 8,218,159 km (0.094 R)
• M44: 8,319,287 km (0.085 R)
• M45: 8,484,742 km (0.076 R)
• M46: 8,599,933 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819

Radius: 9.2

Gravity: 9.68 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.49 AU - 1.59 AU

Year: 1274 Days

Day: 12 Hours

Environment

Temp: -201 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 51,390,031 km

• M1: 115,490 km (0.074 R)
• M2: 190,887 km (0.105 R)
• M3: 248,632 km (0.099 R)
• M4: 330,910 km (0.084 R)
• M5: 397,930 km (0.078 R)
• M6: 488,287 km (0.068 R)
• M7: 625,469 km (0.034 R)
• M8: 776,114 km (0.099 R)
• M9: 871,108 km (0.083 R)
• M10: 939,325 km (0.071 R)
• M11: 1,081,443 km (0.084 R)
• M12: 1,273,676 km (0.068 R)
• M13: 1,405,173 km (0.107 R)
• M14: 1,625,082 km (0.1 R)
• M15: 2,139,549 km (0.109 R)
• M16: 2,557,076 km (0.104 R)
• M17: 2,623,647 km (0.064 R)
• M18: 2,769,805 km (0.096 R)
• M19: 3,152,925 km (0.115 R)
• M20: 3,429,980 km (0.086 R)
• M21: 3,528,266 km (0.1 R)
• M22: 3,639,866 km (0.086 R)
• M23: 3,777,945 km (0.045 R)
• M24: 4,150,294 km (0.117 R)
• M25: 4,255,162 km (0.117 R)
• M26: 4,334,299 km (0.085 R)
• M27: 4,400,721 km (0.115 R)
• M28: 4,629,007 km (0.082 R)
• M29: 4,724,151 km (0.042 R)
• M30: 4,888,709 km (0.11 R)
• M31: 5,125,223 km (0.107 R)
• M32: 5,209,596 km (0.082 R)
• M33: 5,667,515 km (0.104 R)
• M34: 5,798,563 km (0.102 R)
• M35: 6,303,007 km (0.114 R)
• M36: 6,499,579 km (0.08 R)
• M37: 6,713,653 km (0.041 R)
• M38: 7,227,372 km (0.113 R)
• M39: 7,306,210 km (0.071 R)
• M40: 7,544,819 km (0.103 R)
• M41: 7,657,017 km (0.066 R)
• M42: 8,144,258 km (0.075 R)
• M43: 8,275,904 km (0.068 R)
• M44: 8,358,482 km (0.119 R)
• M45: 8,558,045 km (0.117 R)
• M46: 8,759,105 km (0.075 R)
• M47: 9,012,524 km (0.089 R)
• M48: 9,354,355 km (0.082 R)
• M49: 9,474,931 km (0.057 R)
• M50: 9,717,728 km (0.047 R)
• M51: 9,945,117 km (0.089 R)
• M52: 10,085,888 km (0.117 R)
• M53: 10,387,179 km (0.097 R)
• M54: 10,655,557 km (0.104 R)
• M55: 10,727,514 km (0.069 R)
• M56: 11,938,060 km (0.116 R)
• M57: 12,087,658 km (0.118 R)
• M58: 12,238,003 km (0.119 R)
• M59: 12,521,491 km (0.097 R)
• M60: 12,597,337 km (0.109 R)

Asteroid Belt

Center: 2.08 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.1

Radius: 13.5

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 2.25 AU - 2.97 AU

Year: 2812 Days

Day: 12.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 51,390,031 km

• M1: 237,561 km (0.101 R)
• M2: 396,434 km (0.115 R)
• M3: 523,742 km (0.056 R)
• M4: 614,099 km (0.113 R)
• M5: 860,188 km (0.026 R)
• M6: 1,071,121 km (0.1 R)
• M7: 1,290,880 km (0.098 R)
• M8: 1,477,728 km (0.102 R)
• M9: 1,653,954 km (0.11 R)
• M10: 1,806,544 km (0.119 R)
• M11: 2,082,253 km (0.089 R)
• M12: 2,236,488 km (0.042 R)
• M13: 2,746,467 km (0.064 R)
• M14: 3,090,094 km (0.075 R)
• M15: 3,216,205 km (0.05 R)
• M16: 3,658,117 km (0.083 R)
• M17: 3,818,785 km (0.045 R)
• M18: 3,940,857 km (0.044 R)
• M19: 4,036,599 km (0.102 R)
• M20: 4,371,399 km (0.11 R)
• M21: 4,599,536 km (0.054 R)
• M22: 4,890,354 km (0.099 R)
• M23: 5,067,927 km (0.074 R)
• M24: 5,232,485 km (0.087 R)
• M25: 5,551,577 km (0.076 R)
• M26: 5,799,161 km (0.101 R)
• M27: 6,081,901 km (0.082 R)
• M28: 6,661,294 km (0.103 R)
• M29: 7,512,356 km (0.09 R)
• M30: 7,666,143 km (0.104 R)
• M31: 7,942,151 km (0.039 R)
• M32: 8,344,569 km (0.117 R)
• M33: 9,169,751 km (0.065 R)
• M34: 9,777,717 km (0.088 R)
• M35: 11,129,782 km (0.08 R)
• M36: 11,266,365 km (0.113 R)
• M37: 11,699,002 km (0.096 R)
• M38: 12,277,647 km (0.038 R)
• M39: 12,804,381 km (0.059 R)
• M40: 13,462,911 km (0.056 R)
• M41: 13,566,732 km (0.098 R)
• M42: 13,754,477 km (0.056 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 207.9

Radius: 7.8

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 5.88 AU - 7.12 AU

Year: 11051 Days

Day: 17.7 Hours

Environment

Temp: -237 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 51,390,031 km

• M1: 166,502 km (0.111 R)
• M2: 224,696 km (0.075 R)
• M3: 746,493 km (0.064 R)
• M4: 802,144 km (0.096 R)
• M5: 1,055,114 km (0.097 R)
• M6: 1,418,487 km (0.039 R)
• M7: 2,032,137 km (0.038 R)
• M8: 2,151,816 km (0.115 R)
• M9: 2,232,898 km (0.047 R)
• M10: 2,697,250 km (0.096 R)
• M11: 3,144,996 km (0.08 R)
• M12: 3,424,744 km (0.118 R)
• M13: 3,495,953 km (0.09 R)
• M14: 4,209,834 km (0.111 R)
• M15: 4,544,185 km (0.093 R)
• M16: 4,648,903 km (0.092 R)
• M17: 5,129,711 km (0.1 R)
• M18: 5,238,618 km (0.09 R)
• M19: 5,570,277 km (0.082 R)
• M20: 5,880,393 km (0.074 R)
• M21: 7,054,587 km (0.097 R)
• M22: 7,420,653 km (0.044 R)
• M23: 7,730,620 km (0.115 R)
• M24: 8,171,484 km (0.109 R)
• M25: 8,653,040 km (0.088 R)
• M26: 9,011,925 km (0.08 R)
• M27: 9,778,315 km (0.08 R)
• M28: 9,879,743 km (0.093 R)
• M29: 10,392,414 km (0.118 R)
• M30: 10,808,895 km (0.063 R)
• M31: 10,913,913 km (0.116 R)
• M32: 11,089,541 km (0.106 R)
• M33: 12,163,354 km (0.101 R)
• M34: 12,565,324 km (0.116 R)
• M35: 12,712,528 km (0.103 R)
• M36: 12,786,429 km (0.075 R)
• M37: 13,269,930 km (0.063 R)
• M38: 13,382,278 km (0.103 R)
• M39: 13,457,376 km (0.12 R)
• M40: 13,683,717 km (0.115 R)
• M41: 14,639,797 km (0.069 R)
• M42: 15,145,438 km (0.112 R)
• M43: 15,498,938 km (0.114 R)
• M44: 16,014,302 km (0.096 R)
• M45: 17,965,358 km (0.057 R)
• M46: 19,690,521 km (0.091 R)
• M47: 21,292,115 km (0.098 R)
• M48: 21,776,364 km (0.079 R)
• M49: 22,353,213 km (0.045 R)
• M50: 22,845,390 km (0.074 R)
• M51: 23,025,207 km (0.104 R)
• M52: 24,343,014 km (0.055 R)
• M53: 24,710,726 km (0.085 R)
• M54: 25,545,033 km (0.068 R)
• M55: 26,624,531 km (0.073 R)
• M56: 27,527,504 km (0.112 R)
• M57: 28,247,519 km (0.07 R)
• M58: 28,537,140 km (0.026 R)
• M59: 28,973,517 km (0.1 R)
• M60: 29,902,221 km (0.113 R)
• M61: 32,493,106 km (0.054 R)
• M62: 32,796,640 km (0.11 R)
• M63: 33,101,072 km (0.093 R)
• M64: 33,304,675 km (0.101 R)
• M65: 33,457,564 km (0.063 R)
• M66: 33,917,727 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 634

Radius: 5.2

Gravity: 23.45 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 5.82 AU - 7.56 AU

Year: 11539 Days

Day: 20.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 51,390,031 km

• M1: 444,904 km (0.093 R)
• M2: 655,837 km (0.091 R)
• M3: 708,795 km (0.107 R)
• M4: 837,898 km (0.064 R)
• M5: 1,427,463 km (0.12 R)
• M6: 1,591,273 km (0.058 R)
• M7: 1,687,763 km (0.12 R)
• M8: 2,014,335 km (0.057 R)
• M9: 2,224,969 km (0.097 R)
• M10: 3,046,411 km (0.079 R)
• M11: 3,166,538 km (0.059 R)
• M12: 3,473,513 km (0.11 R)
• M13: 3,854,389 km (0.082 R)
• M14: 4,082,675 km (0.047 R)
• M15: 4,416,428 km (0.099 R)
• M16: 5,433,245 km (0.075 R)
• M17: 5,505,950 km (0.113 R)
• M18: 5,949,059 km (0.042 R)
• M19: 5,986,458 km (0.059 R)
• M20: 7,628,444 km (0.1 R)
• M21: 8,372,095 km (0.067 R)
• M22: 8,625,065 km (0.083 R)
• M23: 8,795,158 km (0.12 R)
• M24: 10,420,090 km (0.096 R)
• M25: 11,616,125 km (0.112 R)
• M26: 11,945,390 km (0.107 R)
• M27: 12,951,884 km (0.111 R)
• M28: 13,391,403 km (0.06 R)
• M29: 13,489,689 km (0.069 R)
• M30: 14,285,250 km (0.075 R)
• M31: 14,840,857 km (0.112 R)
• M32: 15,146,934 km (0.101 R)
• M33: 15,300,721 km (0.036 R)
• M34: 15,661,551 km (0.093 R)
• M35: 15,765,222 km (0.089 R)
• M36: 15,921,103 km (0.063 R)
• M37: 16,391,887 km (0.106 R)
• M38: 16,602,521 km (0.06 R)
• M39: 16,708,137 km (0.046 R)
• M40: 16,814,053 km (0.115 R)
• M41: 17,186,551 km (0.097 R)
• M42: 17,239,958 km (0.054 R)
• M43: 17,993,632 km (0.099 R)
• M44: 19,255,041 km (0.111 R)
• M45: 19,644,594 km (0.086 R)
• M46: 21,171,390 km (0.05 R)
• M47: 21,746,444 km (0.058 R)
• M48: 22,035,916 km (0.071 R)
• M49: 22,210,197 km (0.031 R)
• M50: 23,324,702 km (0.114 R)
• M51: 24,637,722 km (0.037 R)
• M52: 24,698,010 km (0.04 R)
• M53: 25,424,906 km (0.089 R)
• M54: 25,668,751 km (0.075 R)
• M55: 25,729,787 km (0.12 R)
• M56: 26,651,758 km (0.034 R)
• M57: 26,837,559 km (0.09 R)
• M58: 26,961,575 km (0.078 R)
• M59: 28,718,154 km (0.09 R)
• M60: 28,908,442 km (0.083 R)
• M61: 29,226,786 km (0.104 R)
• M62: 29,674,234 km (0.053 R)
• M63: 30,252,878 km (0.11 R)
• M64: 31,879,755 km (0.09 R)
• M65: 33,534,906 km (0.112 R)
• M66: 34,137,636 km (0.103 R)
• M67: 34,204,805 km (0.118 R)
• M68: 35,217,732 km (0.056 R)
• M69: 35,285,650 km (0.073 R)
• M70: 36,035,285 km (0.099 R)
• M71: 36,790,156 km (0.05 R)
• M72: 37,966,892 km (0.098 R)
• M73: 38,106,168 km (0.066 R)
• M74: 39,296,817 km (0.03 R)
• M75: 39,790,490 km (0.04 R)
• M76: 40,998,194 km (0.104 R)
• M77: 41,786,126 km (0.027 R)
• M78: 42,145,909 km (0.101 R)
• M79: 42,578,995 km (0.088 R)
• M80: 43,449,505 km (0.085 R)
• M81: 44,913,470 km (0.105 R)
• M82: 45,134,575 km (0.064 R)
• M83: 45,725,636 km (0.042 R)
• M84: 46,840,739 km (0.067 R)
• M85: 46,915,388 km (0.062 R)
• M86: 47,889,570 km (0.081 R)
• M87: 48,946,179 km (0.12 R)
• M88: 49,022,025 km (0.085 R)
• M89: 49,857,978 km (0.101 R)
• M90: 51,082,437 km (0.112 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: 334 - 18,006 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit