🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.7

Radius: 10.9

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.67 AU - 0.69 AU

Year: 368 Days

Day: 9.3 Hours

Environment

Temp: -144 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 37,518,249 km

• M1: 141,370 km (0.112 R)
• M2: 213,027 km (0.08 R)
• M3: 287,527 km (0.119 R)
• M4: 358,287 km (0.074 R)
• M5: 433,684 km (0.072 R)
• M6: 529,128 km (0.097 R)
• M7: 664,663 km (0.074 R)
• M8: 739,911 km (0.025 R)
• M9: 910,901 km (0.066 R)
• M10: 1,048,232 km (0.04 R)
• M11: 1,159,084 km (0.078 R)
• M12: 1,267,842 km (0.07 R)
• M13: 1,360,593 km (0.036 R)
• M14: 1,442,423 km (0.118 R)
• M15: 1,522,757 km (0.11 R)
• M16: 1,597,705 km (0.088 R)
• M17: 1,709,006 km (0.038 R)
• M18: 1,783,655 km (0.053 R)
• M19: 1,884,784 km (0.095 R)
• M20: 1,976,786 km (0.087 R)
• M21: 2,081,804 km (0.065 R)
• M22: 2,154,060 km (0.066 R)
• M23: 2,227,213 km (0.104 R)
• M24: 2,324,751 km (0.051 R)
• M25: 2,435,753 km (0.101 R)
• M26: 2,512,197 km (0.057 R)
• M27: 2,613,924 km (0.092 R)
• M28: 2,683,935 km (0.076 R)
• M29: 2,767,112 km (0.079 R)
• M30: 2,842,808 km (0.088 R)
• M31: 2,919,103 km (0.025 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 386.8

Radius: 10.7

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.59 AU - 0.89 AU

Year: 418 Days

Day: 9.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 68.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 37,518,249 km

• M1: 135,236 km (0.045 R)
• M2: 220,806 km (0.091 R)
• M3: 299,944 km (0.109 R)
• M4: 458,069 km (0.108 R)
• M5: 550,819 km (0.073 R)
• M6: 647,759 km (0.051 R)
• M7: 744,100 km (0.097 R)
• M8: 823,536 km (0.096 R)
• M9: 906,264 km (0.117 R)
• M10: 1,007,841 km (0.102 R)
• M11: 1,080,695 km (0.114 R)
• M12: 1,180,626 km (0.04 R)
• M13: 1,283,849 km (0.107 R)
• M14: 1,399,338 km (0.092 R)
• M15: 1,490,593 km (0.085 R)
• M16: 1,579,305 km (0.068 R)
• M17: 1,645,876 km (0.032 R)
• M18: 1,866,383 km (0.056 R)
• M19: 1,936,993 km (0.114 R)
• M20: 2,191,310 km (0.094 R)
• M21: 2,309,043 km (0.055 R)
• M22: 2,473,302 km (0.096 R)
• M23: 2,567,997 km (0.105 R)
• M24: 2,675,408 km (0.12 R)
• M25: 2,743,924 km (0.083 R)
• M26: 2,842,210 km (0.114 R)
• M27: 2,941,543 km (0.045 R)
• M28: 3,066,008 km (0.109 R)
• M29: 3,162,050 km (0.117 R)
• M30: 3,332,592 km (0.079 R)
• M31: 3,437,609 km (0.102 R)
• M32: 3,714,665 km (0.088 R)
• M33: 3,888,348 km (0.095 R)
• M34: 3,979,453 km (0.103 R)
• M35: 4,077,888 km (0.096 R)
• M36: 4,217,014 km (0.089 R)
• M37: 4,330,858 km (0.095 R)
• M38: 4,411,940 km (0.119 R)
• M39: 4,493,471 km (0.111 R)
• M40: 4,582,332 km (0.101 R)
• M41: 4,657,879 km (0.059 R)
• M42: 4,761,850 km (0.043 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.6

Radius: 9.6

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.77 AU - 0.87 AU

Year: 487 Days

Day: 12.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 37,518,249 km

• M1: 119,828 km (0.104 R)
• M2: 183,856 km (0.102 R)
• M3: 260,300 km (0.103 R)
• M4: 337,194 km (0.09 R)
• M5: 403,017 km (0.068 R)
• M6: 480,209 km (0.037 R)
• M7: 544,985 km (0.094 R)
• M8: 622,926 km (0.109 R)
• M9: 711,637 km (0.096 R)
• M10: 780,452 km (0.105 R)
• M11: 925,562 km (0.104 R)
• M12: 1,016,966 km (0.085 R)
• M13: 1,103,733 km (0.076 R)
• M14: 1,226,104 km (0.094 R)
• M15: 1,361,939 km (0.065 R)
• M16: 1,471,594 km (0.115 R)
• M17: 1,579,754 km (0.094 R)
• M18: 1,789,939 km (0.097 R)
• M19: 1,866,832 km (0.103 R)
• M20: 1,964,669 km (0.084 R)
• M21: 2,034,082 km (0.111 R)
• M22: 2,232,150 km (0.037 R)
• M23: 2,463,279 km (0.05 R)
• M24: 2,598,216 km (0.072 R)
• M25: 2,757,687 km (0.067 R)
• M26: 2,858,367 km (0.085 R)
• M27: 2,954,558 km (0.116 R)
• M28: 3,028,908 km (0.087 R)
• M29: 3,092,338 km (0.062 R)
• M30: 3,179,553 km (0.093 R)
• M31: 3,285,169 km (0.082 R)
• M32: 3,410,083 km (0.106 R)
• M33: 3,488,174 km (0.112 R)
• M34: 3,633,882 km (0.025 R)
• M35: 3,775,551 km (0.034 R)
• M36: 3,856,334 km (0.095 R)
• M37: 3,988,279 km (0.085 R)
• M38: 4,057,842 km (0.031 R)
• M39: 4,128,004 km (0.107 R)
• M40: 4,275,806 km (0.088 R)
• M41: 4,445,151 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319

Radius: 13

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.01 AU - 1.43 AU

Year: 884 Days

Day: 13.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 37,518,249 km

• M1: 166,802 km (0.088 R)
• M2: 262,395 km (0.118 R)
• M3: 421,118 km (0.083 R)
• M4: 597,494 km (0.045 R)
• M5: 680,521 km (0.077 R)
• M6: 768,335 km (0.084 R)
• M7: 983,157 km (0.084 R)
• M8: 1,364,333 km (0.115 R)
• M9: 1,497,774 km (0.101 R)
• M10: 1,693,448 km (0.102 R)
• M11: 1,811,032 km (0.074 R)
• M12: 1,917,994 km (0.075 R)
• M13: 2,280,769 km (0.1 R)
• M14: 2,374,866 km (0.038 R)
• M15: 2,477,790 km (0.109 R)
• M16: 2,574,729 km (0.1 R)
• M17: 2,873,476 km (0.092 R)
• M18: 3,015,295 km (0.119 R)
• M19: 3,338,725 km (0.108 R)
• M20: 3,488,024 km (0.116 R)
• M21: 3,802,030 km (0.08 R)
• M22: 3,888,497 km (0.103 R)
• M23: 4,081,030 km (0.067 R)
• M24: 4,223,148 km (0.114 R)
• M25: 4,321,733 km (0.084 R)
• M26: 4,548,972 km (0.075 R)
• M27: 4,631,700 km (0.079 R)
• M28: 4,770,676 km (0.094 R)
• M29: 4,854,750 km (0.116 R)
• M30: 4,967,696 km (0.074 R)
• M31: 5,177,134 km (0.06 R)
• M32: 5,644,028 km (0.115 R)
• M33: 5,852,717 km (0.078 R)
• M34: 6,206,068 km (0.085 R)
• M35: 6,556,127 km (0.053 R)
• M36: 6,733,699 km (0.109 R)
• M37: 7,125,496 km (0.101 R)
• M38: 7,372,781 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520

Radius: 9.2

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.16 AU - 1.78 AU

Year: 1169 Days

Day: 11.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 37,518,249 km

• M1: 137,331 km (0.117 R)
• M2: 213,177 km (0.066 R)
• M3: 301,889 km (0.108 R)
• M4: 398,230 km (0.091 R)
• M5: 538,852 km (0.073 R)
• M6: 739,313 km (0.068 R)
• M7: 897,587 km (0.108 R)
• M8: 964,009 km (0.059 R)
• M9: 1,088,325 km (0.114 R)
• M10: 1,167,013 km (0.115 R)
• M11: 1,453,792 km (0.038 R)
• M12: 1,517,072 km (0.11 R)
• M13: 1,630,168 km (0.108 R)
• M14: 1,839,156 km (0.111 R)
• M15: 1,899,295 km (0.076 R)
• M16: 2,003,863 km (0.04 R)
• M17: 2,074,773 km (0.099 R)
• M18: 2,191,609 km (0.085 R)
• M19: 2,338,664 km (0.108 R)
• M20: 2,517,583 km (0.109 R)
• M21: 2,642,646 km (0.071 R)
• M22: 2,839,068 km (0.069 R)
• M23: 2,918,954 km (0.09 R)
• M24: 3,009,909 km (0.072 R)
• M25: 3,070,945 km (0.096 R)
• M26: 3,204,835 km (0.095 R)
• M27: 3,403,950 km (0.072 R)
• M28: 3,499,693 km (0.114 R)
• M29: 3,748,474 km (0.116 R)
• M30: 3,847,508 km (0.08 R)
• M31: 3,958,360 km (0.084 R)
• M32: 4,366,911 km (0.107 R)
• M33: 4,436,175 km (0.11 R)
• M34: 4,611,354 km (0.072 R)
• M35: 4,729,387 km (0.095 R)
• M36: 4,836,499 km (0.089 R)
• M37: 5,113,854 km (0.052 R)
• M38: 5,309,827 km (0.044 R)
• M39: 6,054,076 km (0.051 R)
• M40: 6,235,538 km (0.118 R)
• M41: 6,379,452 km (0.118 R)
• M42: 6,445,125 km (0.045 R)
• M43: 6,511,098 km (0.09 R)
• M44: 6,670,270 km (0.112 R)
• M45: 6,790,696 km (0.031 R)
• M46: 7,169,478 km (0.062 R)
• M47: 7,251,607 km (0.096 R)
• M48: 7,499,790 km (0.114 R)
• M49: 7,806,914 km (0.094 R)
• M50: 8,004,384 km (0.086 R)
• M51: 8,103,866 km (0.045 R)
• M52: 8,189,436 km (0.096 R)
• M53: 8,289,667 km (0.057 R)
• M54: 8,534,708 km (0.099 R)
• M55: 8,592,602 km (0.071 R)
• M56: 8,708,990 km (0.092 R)
• M57: 9,328,774 km (0.072 R)
• M58: 9,508,441 km (0.096 R)
• M59: 9,568,579 km (0.079 R)
• M60: 9,674,195 km (0.109 R)
• M61: 9,810,479 km (0.078 R)
• M62: 10,207,960 km (0.066 R)
• M63: 10,377,604 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.6

Radius: 12.3

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.31 AU - 1.87 AU

Year: 1315 Days

Day: 5.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 37,518,249 km

• M1: 153,787 km (0.112 R)
• M2: 231,129 km (0.112 R)
• M3: 321,187 km (0.106 R)
• M4: 511,924 km (0.114 R)
• M5: 588,668 km (0.093 R)
• M6: 767,437 km (0.051 R)
• M7: 870,061 km (0.112 R)
• M8: 1,084,136 km (0.079 R)
• M9: 1,234,631 km (0.113 R)
• M10: 1,316,162 km (0.057 R)
• M11: 1,608,776 km (0.065 R)
• M12: 1,898,995 km (0.097 R)
• M13: 2,050,538 km (0.102 R)
• M14: 2,357,513 km (0.066 R)
• M15: 2,538,377 km (0.113 R)
• M16: 2,859,414 km (0.104 R)
• M17: 2,941,693 km (0.081 R)
• M18: 3,570,004 km (0.051 R)
• M19: 3,869,349 km (0.117 R)
• M20: 4,166,600 km (0.057 R)
• M21: 4,270,870 km (0.118 R)
• M22: 4,418,224 km (0.038 R)
• M23: 4,567,373 km (0.044 R)
• M24: 4,664,162 km (0.115 R)
• M25: 4,761,700 km (0.12 R)
• M26: 4,914,589 km (0.116 R)
• M27: 5,069,273 km (0.089 R)
• M28: 5,259,263 km (0.072 R)
• M29: 5,428,907 km (0.065 R)
• M30: 5,577,457 km (0.073 R)
• M31: 5,750,542 km (0.118 R)
• M32: 5,901,935 km (0.077 R)
• M33: 6,280,418 km (0.09 R)
• M34: 6,679,096 km (0.077 R)
• M35: 6,801,467 km (0.101 R)
• M36: 6,924,736 km (0.065 R)
• M37: 7,048,603 km (0.07 R)
• M38: 7,210,917 km (0.106 R)
• M39: 7,769,216 km (0.042 R)
• M40: 7,911,035 km (0.118 R)
• M41: 8,981,707 km (0.039 R)

Asteroid Belt

Center: 2.76 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 3.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.5

Radius: 13.9

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 3.48 AU - 4.36 AU

Year: 5091 Days

Day: 8.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 37,518,249 km

• M1: 178,470 km (0.077 R)
• M2: 378,931 km (0.119 R)
• M3: 592,108 km (0.115 R)
• M4: 822,938 km (0.078 R)
• M5: 1,227,151 km (0.105 R)
• M6: 1,325,437 km (0.037 R)
• M7: 1,691,503 km (0.043 R)
• M8: 1,896,452 km (0.11 R)
• M9: 2,413,612 km (0.076 R)
• M10: 2,602,853 km (0.111 R)
• M11: 3,063,914 km (0.102 R)
• M12: 3,223,535 km (0.052 R)
• M13: 3,339,174 km (0.104 R)
• M14: 3,743,088 km (0.099 R)
• M15: 4,012,963 km (0.094 R)
• M16: 6,104,192 km (0.062 R)
• M17: 6,219,382 km (0.106 R)
• M18: 6,481,178 km (0.11 R)
• M19: 7,288,408 km (0.094 R)
• M20: 7,441,447 km (0.119 R)
• M21: 7,564,716 km (0.063 R)
• M22: 7,875,730 km (0.119 R)
• M23: 8,032,807 km (0.11 R)
• M24: 8,446,146 km (0.119 R)
• M25: 8,671,590 km (0.112 R)
• M26: 9,095,700 km (0.095 R)
• M27: 9,459,821 km (0.096 R)
• M28: 9,727,751 km (0.115 R)
• M29: 9,964,116 km (0.071 R)
• M30: 10,100,100 km (0.086 R)
• M31: 10,408,421 km (0.053 R)
• M32: 11,493,904 km (0.094 R)
• M33: 11,887,795 km (0.063 R)
• M34: 12,836,395 km (0.118 R)
• M35: 13,695,835 km (0.044 R)
• M36: 13,885,076 km (0.119 R)
• M37: 14,075,215 km (0.093 R)
• M38: 14,189,807 km (0.104 R)
• M39: 14,922,388 km (0.07 R)
• M40: 15,117,164 km (0.07 R)
• M41: 15,548,903 km (0.085 R)
• M42: 16,827,516 km (0.106 R)
• M43: 17,438,624 km (0.116 R)
• M44: 18,514,831 km (0.104 R)
• M45: 19,655,365 km (0.12 R)
• M46: 20,385,103 km (0.041 R)
• M47: 20,558,039 km (0.061 R)
• M48: 21,167,500 km (0.041 R)
• M49: 21,342,679 km (0.084 R)
• M50: 21,430,493 km (0.112 R)
• M51: 21,782,796 km (0.106 R)
• M52: 22,181,475 km (0.104 R)
• M53: 23,031,041 km (0.117 R)
• M54: 23,482,378 km (0.067 R)
• M55: 23,891,229 km (0.049 R)
• M56: 24,210,770 km (0.104 R)
• M57: 24,348,250 km (0.11 R)
• M58: 24,669,886 km (0.051 R)
• M59: 24,808,114 km (0.106 R)
• M60: 25,039,093 km (0.056 R)
• M61: 25,923,665 km (0.097 R)
• M62: 26,158,085 km (0.109 R)
• M63: 26,299,006 km (0.071 R)
• M64: 26,629,019 km (0.114 R)
• M65: 27,007,951 km (0.097 R)
• M66: 27,245,662 km (0.062 R)
• M67: 28,010,855 km (0.045 R)
• M68: 28,203,238 km (0.093 R)
• M69: 28,734,759 km (0.113 R)
• M70: 29,660,471 km (0.119 R)
• M71: 30,250,335 km (0.12 R)
• M72: 31,491,399 km (0.081 R)
• M73: 32,496,098 km (0.092 R)
• M74: 33,562,581 km (0.1 R)
• M75: 33,869,407 km (0.088 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.8

Radius: 10.1

Gravity: 6.36 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 4.82 AU - 4.98 AU

Year: 7115 Days

Day: 10.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 37,518,249 km

• M1: 255,962 km (0.103 R)
• M2: 381,026 km (0.084 R)
• M3: 518,805 km (0.099 R)
• M4: 661,522 km (0.101 R)
• M5: 1,003,652 km (0.084 R)
• M6: 1,085,183 km (0.113 R)
• M7: 1,255,276 km (0.092 R)
• M8: 1,361,640 km (0.1 R)
• M9: 1,660,536 km (0.085 R)
• M10: 1,939,237 km (0.093 R)
• M11: 2,190,262 km (0.082 R)
• M12: 2,474,050 km (0.109 R)
• M13: 2,631,726 km (0.051 R)
• M14: 2,700,391 km (0.099 R)
• M15: 2,957,400 km (0.052 R)
• M16: 3,596,333 km (0.075 R)
• M17: 3,698,359 km (0.105 R)
• M18: 3,879,372 km (0.097 R)
• M19: 4,116,335 km (0.1 R)
• M20: 4,277,153 km (0.071 R)
• M21: 4,358,235 km (0.077 R)
• M22: 4,687,948 km (0.089 R)
• M23: 4,827,822 km (0.107 R)
• M24: 5,488,596 km (0.051 R)
• M25: 5,814,869 km (0.036 R)
• M26: 6,056,021 km (0.061 R)
• M27: 6,300,614 km (0.118 R)
• M28: 6,486,115 km (0.087 R)
• M29: 7,506,073 km (0.106 R)
• M30: 7,801,978 km (0.038 R)
• M31: 8,135,132 km (0.107 R)
• M32: 8,575,399 km (0.032 R)
• M33: 9,093,007 km (0.026 R)
• M34: 9,267,887 km (0.069 R)
• M35: 9,727,602 km (0.025 R)
• M36: 10,705,972 km (0.114 R)
• M37: 10,927,676 km (0.105 R)
• M38: 11,076,376 km (0.104 R)
• M39: 11,450,969 km (0.077 R)
• M40: 11,564,065 km (0.093 R)
• M41: 11,867,749 km (0.082 R)
• M42: 12,716,417 km (0.05 R)
• M43: 12,912,091 km (0.105 R)
• M44: 13,266,638 km (0.045 R)
• M45: 15,879,664 km (0.102 R)
• M46: 16,259,493 km (0.099 R)
• M47: 16,813,604 km (0.065 R)
• M48: 17,157,679 km (0.055 R)
• M49: 17,721,813 km (0.092 R)
• M50: 18,247,948 km (0.072 R)
• M51: 19,495,445 km (0.087 R)
• M52: 19,947,679 km (0.099 R)
• M53: 20,266,173 km (0.061 R)
• M54: 20,357,577 km (0.112 R)
• M55: 21,278,502 km (0.081 R)
• M56: 22,307,286 km (0.116 R)
• M57: 22,543,352 km (0.098 R)
• M58: 22,685,320 km (0.108 R)
• M59: 25,587,968 km (0.114 R)
• M60: 26,481,217 km (0.108 R)
• M61: 26,581,148 km (0.104 R)
• M62: 28,094,630 km (0.049 R)
• M63: 28,656,519 km (0.069 R)
• M64: 28,861,768 km (0.098 R)
• M65: 29,480,504 km (0.063 R)
• M66: 30,207,849 km (0.041 R)
• M67: 30,416,688 km (0.088 R)
• M68: 30,573,766 km (0.069 R)
• M69: 30,730,993 km (0.119 R)
• M70: 31,309,937 km (0.068 R)
• M71: 31,839,364 km (0.094 R)
• M72: 31,945,578 km (0.09 R)
• M73: 32,318,376 km (0.057 R)
• M74: 32,478,595 km (0.119 R)
• M75: 33,014,604 km (0.114 R)
• M76: 33,175,871 km (0.085 R)
• M77: 33,553,456 km (0.086 R)
• M78: 33,823,929 km (0.111 R)
• M79: 34,040,846 km (0.089 R)
• M80: 36,235,596 km (0.098 R)
• M81: 36,735,702 km (0.059 R)
• M82: 37,238,201 km (0.119 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 302 - 14,898 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit