🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706.1

Radius: 13

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.47 AU - 0.55 AU

Year: 251 Days

Day: 9.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 55,794,268 km

• M1: 167,550 km (0.065 R)
• M2: 252,072 km (0.043 R)
• M3: 375,341 km (0.084 R)
• M4: 469,139 km (0.07 R)
• M5: 605,123 km (0.103 R)
• M6: 697,276 km (0.1 R)
• M7: 788,530 km (0.056 R)
• M8: 877,840 km (0.034 R)
• M9: 967,449 km (0.059 R)
• M10: 1,064,090 km (0.045 R)
• M11: 1,217,727 km (0.106 R)
• M12: 1,363,136 km (0.092 R)
• M13: 1,465,012 km (0.054 R)
• M14: 1,569,431 km (0.079 R)
• M15: 1,650,513 km (0.064 R)
• M16: 1,759,570 km (0.105 R)
• M17: 1,944,024 km (0.07 R)
• M18: 2,139,698 km (0.102 R)
• M19: 2,220,780 km (0.065 R)
• M20: 2,342,104 km (0.111 R)
• M21: 2,430,816 km (0.074 R)
• M22: 2,535,834 km (0.112 R)
• M23: 2,626,939 km (0.107 R)
• M24: 2,781,623 km (0.065 R)
• M25: 2,933,913 km (0.074 R)
• M26: 3,035,341 km (0.047 R)
• M27: 3,127,044 km (0.101 R)
• M28: 3,258,242 km (0.11 R)
• M29: 3,441,649 km (0.071 R)
• M30: 3,548,761 km (0.076 R)
• M31: 3,668,589 km (0.077 R)
• M32: 3,812,951 km (0.082 R)
• M33: 3,923,952 km (0.114 R)
• M34: 4,071,755 km (0.061 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 191.6

Radius: 8.1

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.6 AU - 0.72 AU

Year: 370 Days

Day: 11.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 55,794,268 km

• M1: 106,962 km (0.073 R)
• M2: 166,054 km (0.069 R)
• M3: 225,743 km (0.11 R)
• M4: 289,322 km (0.108 R)
• M5: 361,129 km (0.098 R)
• M6: 498,161 km (0.059 R)
• M7: 561,890 km (0.04 R)
• M8: 653,443 km (0.12 R)
• M9: 724,203 km (0.101 R)
• M10: 821,891 km (0.085 R)
• M11: 883,226 km (0.111 R)
• M12: 1,007,841 km (0.04 R)
• M13: 1,067,381 km (0.106 R)
• M14: 1,121,236 km (0.109 R)
• M15: 1,172,698 km (0.052 R)
• M16: 1,235,529 km (0.074 R)
• M17: 1,361,041 km (0.065 R)
• M18: 1,536,520 km (0.111 R)
• M19: 1,593,965 km (0.054 R)
• M20: 1,675,795 km (0.073 R)
• M21: 1,731,147 km (0.118 R)
• M22: 1,783,207 km (0.059 R)
• M23: 1,880,595 km (0.11 R)
• M24: 1,946,418 km (0.09 R)
• M25: 2,004,761 km (0.083 R)
• M26: 2,174,704 km (0.077 R)
• M27: 2,283,312 km (0.086 R)
• M28: 2,420,643 km (0.102 R)
• M29: 2,556,179 km (0.049 R)
• M30: 2,624,844 km (0.109 R)
• M31: 2,689,471 km (0.099 R)
• M32: 2,764,120 km (0.038 R)
• M33: 2,896,215 km (0.054 R)
• M34: 2,953,511 km (0.104 R)
• M35: 3,064,512 km (0.027 R)
• M36: 3,123,005 km (0.085 R)
• M37: 3,176,860 km (0.108 R)
• M38: 3,231,015 km (0.12 R)
• M39: 3,305,515 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.4

Radius: 9.2

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.6 AU - 0.94 AU

Year: 466 Days

Day: 10.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 55,794,268 km

• M1: 115,938 km (0.094 R)
• M2: 197,020 km (0.088 R)
• M3: 283,937 km (0.079 R)
• M4: 345,721 km (0.1 R)
• M5: 430,094 km (0.107 R)
• M6: 501,751 km (0.06 R)
• M7: 587,620 km (0.068 R)
• M8: 655,687 km (0.12 R)
• M9: 829,670 km (0.093 R)
• M10: 888,611 km (0.084 R)
• M11: 1,011,132 km (0.103 R)
• M12: 1,094,757 km (0.118 R)
• M13: 1,168,359 km (0.076 R)
• M14: 1,239,418 km (0.102 R)
• M15: 1,346,830 km (0.088 R)
• M16: 1,421,629 km (0.107 R)
• M17: 1,479,972 km (0.109 R)
• M18: 1,589,627 km (0.086 R)
• M19: 1,716,336 km (0.1 R)
• M20: 1,846,487 km (0.046 R)
• M21: 2,035,429 km (0.057 R)
• M22: 2,116,810 km (0.052 R)
• M23: 2,189,066 km (0.116 R)
• M24: 2,314,728 km (0.117 R)
• M25: 2,442,933 km (0.12 R)
• M26: 2,540,621 km (0.07 R)
• M27: 2,739,885 km (0.072 R)
• M28: 3,002,130 km (0.088 R)
• M29: 3,060,324 km (0.104 R)
• M30: 3,344,410 km (0.086 R)
• M31: 3,453,317 km (0.036 R)
• M32: 3,520,337 km (0.04 R)
• M33: 3,606,356 km (0.042 R)
• M34: 3,868,601 km (0.098 R)
• M35: 3,944,746 km (0.102 R)
• M36: 4,143,711 km (0.088 R)
• M37: 4,260,697 km (0.046 R)
• M38: 4,564,829 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.5

Radius: 9.9

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.42 AU - 1.54 AU

Year: 1243 Days

Day: 13.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 55,794,268 km

• M1: 142,268 km (0.065 R)
• M2: 207,492 km (0.114 R)
• M3: 276,307 km (0.088 R)
• M4: 413,339 km (0.079 R)
• M5: 556,354 km (0.105 R)
• M6: 634,744 km (0.086 R)
• M7: 751,430 km (0.117 R)
• M8: 919,129 km (0.091 R)
• M9: 1,059,751 km (0.094 R)
• M10: 1,180,327 km (0.106 R)
• M11: 1,249,441 km (0.101 R)
• M12: 1,355,806 km (0.115 R)
• M13: 1,487,452 km (0.109 R)
• M14: 1,763,908 km (0.083 R)
• M15: 1,892,263 km (0.046 R)
• M16: 2,166,626 km (0.028 R)
• M17: 2,278,376 km (0.054 R)
• M18: 2,543,463 km (0.061 R)
• M19: 2,606,892 km (0.077 R)
• M20: 2,744,373 km (0.093 R)
• M21: 2,865,547 km (0.097 R)
• M22: 2,979,092 km (0.077 R)
• M23: 3,055,537 km (0.107 R)
• M24: 3,200,796 km (0.042 R)
• M25: 3,328,553 km (0.109 R)
• M26: 3,457,955 km (0.082 R)
• M27: 3,992,618 km (0.068 R)
• M28: 4,056,047 km (0.096 R)
• M29: 4,130,397 km (0.076 R)
• M30: 4,708,294 km (0.109 R)
• M31: 5,035,315 km (0.104 R)
• M32: 5,439,977 km (0.109 R)
• M33: 5,533,924 km (0.071 R)
• M34: 5,819,058 km (0.111 R)
• M35: 5,963,420 km (0.059 R)
• M36: 6,036,124 km (0.111 R)
• M37: 6,133,363 km (0.099 R)
• M38: 6,329,636 km (0.092 R)
• M39: 6,615,367 km (0.068 R)
• M40: 7,135,370 km (0.088 R)
• M41: 7,380,710 km (0.029 R)
• M42: 7,615,878 km (0.103 R)
• M43: 7,826,961 km (0.095 R)
• M44: 7,893,232 km (0.094 R)
• M45: 8,093,394 km (0.073 R)
• M46: 8,227,883 km (0.066 R)
• M47: 8,786,631 km (0.116 R)
• M48: 8,966,448 km (0.101 R)
• M49: 9,189,348 km (0.078 R)
• M50: 9,357,796 km (0.063 R)
• M51: 9,442,318 km (0.044 R)
• M52: 9,513,078 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.7

Radius: 11.5

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 1.64 AU - 2.5 AU

Year: 2056 Days

Day: 10.9 Hours

Environment

Temp: -197 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 55,794,268 km

• M1: 144,512 km (0.096 R)
• M2: 228,735 km (0.052 R)
• M3: 379,530 km (0.046 R)
• M4: 523,443 km (0.064 R)
• M5: 720,613 km (0.118 R)
• M6: 979,716 km (0.067 R)
• M7: 1,063,641 km (0.091 R)
• M8: 1,340,696 km (0.119 R)
• M9: 1,674,599 km (0.093 R)
• M10: 1,927,718 km (0.094 R)
• M11: 2,046,948 km (0.104 R)
• M12: 2,305,453 km (0.119 R)
• M13: 2,406,880 km (0.05 R)
• M14: 2,509,803 km (0.113 R)
• M15: 2,627,387 km (0.088 R)
• M16: 2,733,452 km (0.106 R)
• M17: 2,936,307 km (0.112 R)
• M18: 3,214,559 km (0.119 R)
• M19: 3,428,933 km (0.086 R)
• M20: 3,692,524 km (0.091 R)
• M21: 4,038,993 km (0.083 R)
• M22: 4,208,487 km (0.047 R)
• M23: 4,364,667 km (0.113 R)
• M24: 4,459,363 km (0.097 R)
• M25: 4,634,542 km (0.094 R)
• M26: 5,107,720 km (0.099 R)
• M27: 5,190,897 km (0.065 R)
• M28: 5,324,936 km (0.059 R)
• M29: 5,511,036 km (0.118 R)
• M30: 5,855,111 km (0.111 R)
• M31: 6,047,344 km (0.049 R)
• M32: 6,366,437 km (0.094 R)
• M33: 6,492,099 km (0.113 R)
• M34: 6,618,509 km (0.083 R)
• M35: 6,727,566 km (0.051 R)
• M36: 6,800,570 km (0.081 R)
• M37: 6,873,873 km (0.082 R)
• M38: 7,207,027 km (0.112 R)
• M39: 7,300,526 km (0.107 R)
• M40: 7,621,264 km (0.038 R)
• M41: 8,433,879 km (0.112 R)
• M42: 8,710,934 km (0.111 R)
• M43: 9,172,593 km (0.061 R)
• M44: 9,355,402 km (0.119 R)
• M45: 9,477,923 km (0.046 R)
• M46: 9,559,902 km (0.103 R)
• M47: 9,703,965 km (0.084 R)
• M48: 9,807,337 km (0.038 R)
• M49: 10,266,603 km (0.119 R)
• M50: 10,562,358 km (0.106 R)
• M51: 10,711,357 km (0.053 R)
• M52: 10,882,497 km (0.059 R)
• M53: 11,119,311 km (0.114 R)
• M54: 11,510,659 km (0.114 R)
• M55: 11,818,082 km (0.111 R)
• M56: 12,172,629 km (0.09 R)
• M57: 12,463,447 km (0.116 R)
• M58: 12,779,099 km (0.102 R)
• M59: 13,234,774 km (0.055 R)
• M60: 13,881,635 km (0.109 R)
• M61: 14,775,782 km (0.09 R)
• M62: 15,062,112 km (0.03 R)
• M63: 15,398,408 km (0.057 R)
• M64: 15,519,134 km (0.09 R)
• M65: 15,932,024 km (0.111 R)
• M66: 16,005,327 km (0.096 R)
• M67: 16,348,504 km (0.076 R)
• M68: 16,496,307 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.9

Radius: 13

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 2.58 AU - 3.14 AU

Year: 3339 Days

Day: 5 Hours

Environment

Temp: -202 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 55,794,268 km

• M1: 167,550 km (0.114 R)
• M2: 274,362 km (0.069 R)
• M3: 395,686 km (0.068 R)
• M4: 508,483 km (0.105 R)
• M5: 628,909 km (0.103 R)
• M6: 844,779 km (0.108 R)
• M7: 977,772 km (0.106 R)
• M8: 1,062,893 km (0.058 R)
• M9: 1,199,775 km (0.078 R)
• M10: 1,360,144 km (0.073 R)
• M11: 1,447,509 km (0.109 R)
• M12: 1,610,122 km (0.058 R)
• M13: 1,788,443 km (0.096 R)
• M14: 2,063,703 km (0.116 R)
• M15: 2,206,569 km (0.058 R)
• M16: 2,352,726 km (0.088 R)
• M17: 2,459,389 km (0.093 R)
• M18: 2,622,301 km (0.104 R)
• M19: 2,777,584 km (0.112 R)
• M20: 2,890,530 km (0.114 R)
• M21: 3,179,703 km (0.067 R)
• M22: 3,274,249 km (0.066 R)
• M23: 3,369,692 km (0.082 R)
• M24: 3,575,838 km (0.042 R)
• M25: 4,708,892 km (0.117 R)
• M26: 4,858,041 km (0.06 R)
• M27: 4,981,160 km (0.027 R)
• M28: 5,091,564 km (0.109 R)
• M29: 5,216,777 km (0.112 R)
• M30: 5,371,162 km (0.027 R)
• M31: 5,541,255 km (0.06 R)
• M32: 5,930,808 km (0.099 R)
• M33: 6,018,622 km (0.093 R)
• M34: 6,106,735 km (0.087 R)
• M35: 6,254,837 km (0.096 R)
• M36: 7,751,713 km (0.06 R)
• M37: 7,896,075 km (0.116 R)
• M38: 8,482,498 km (0.095 R)
• M39: 8,797,851 km (0.026 R)
• M40: 8,982,006 km (0.096 R)
• M41: 9,150,752 km (0.073 R)
• M42: 9,628,568 km (0.067 R)
• M43: 9,714,736 km (0.115 R)
• M44: 9,801,204 km (0.097 R)
• M45: 10,342,898 km (0.116 R)
• M46: 10,912,417 km (0.1 R)
• M47: 11,002,325 km (0.07 R)
• M48: 11,675,515 km (0.05 R)
• M49: 12,493,217 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 973.9

Radius: 11.3

Gravity: 7.63 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 4.31 AU - 5.53 AU

Year: 7533 Days

Day: 6.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 55,794,268 km

• M1: 185,053 km (0.067 R)
• M2: 431,739 km (0.089 R)
• M3: 714,330 km (0.039 R)
• M4: 827,276 km (0.053 R)
• M5: 1,109,567 km (0.095 R)
• M6: 1,184,965 km (0.116 R)
• M7: 1,262,307 km (0.11 R)
• M8: 1,653,954 km (0.07 R)
• M9: 1,807,741 km (0.076 R)
• M10: 2,036,027 km (0.087 R)
• M11: 2,520,724 km (0.044 R)
• M12: 2,673,164 km (0.102 R)
• M13: 3,203,489 km (0.107 R)
• M14: 3,285,917 km (0.108 R)
• M15: 3,509,117 km (0.104 R)
• M16: 3,737,553 km (0.113 R)
• M17: 3,824,470 km (0.094 R)
• M18: 4,208,936 km (0.084 R)
• M19: 4,329,811 km (0.115 R)
• M20: 4,730,584 km (0.099 R)
• M21: 5,014,969 km (0.111 R)
• M22: 5,240,264 km (0.074 R)
• M23: 5,435,938 km (0.089 R)
• M24: 6,071,729 km (0.115 R)
• M25: 6,415,804 km (0.108 R)
• M26: 7,376,521 km (0.063 R)
• M27: 8,230,276 km (0.054 R)
• M28: 8,726,642 km (0.075 R)
• M29: 9,075,953 km (0.103 R)
• M30: 10,519,124 km (0.083 R)
• M31: 10,601,403 km (0.112 R)
• M32: 11,818,082 km (0.048 R)
• M33: 11,989,372 km (0.108 R)
• M34: 12,161,559 km (0.087 R)
• M35: 12,334,494 km (0.091 R)
• M36: 12,464,794 km (0.059 R)
• M37: 13,972,890 km (0.05 R)
• M38: 14,245,008 km (0.096 R)
• M39: 15,304,311 km (0.053 R)
• M40: 15,491,159 km (0.102 R)
• M41: 15,867,098 km (0.085 R)
• M42: 16,293,602 km (0.118 R)
• M43: 16,771,866 km (0.025 R)
• M44: 17,061,188 km (0.084 R)
• M45: 17,254,918 km (0.115 R)
• M46: 18,781,115 km (0.101 R)
• M47: 19,182,037 km (0.116 R)
• M48: 19,433,960 km (0.077 R)
• M49: 19,839,370 km (0.039 R)
• M50: 20,094,285 km (0.034 R)
• M51: 21,541,345 km (0.108 R)
• M52: 21,645,914 km (0.067 R)
• M53: 23,235,990 km (0.087 R)
• M54: 23,774,243 km (0.068 R)
• M55: 24,207,927 km (0.071 R)
• M56: 24,808,413 km (0.092 R)
• M57: 24,973,121 km (0.116 R)
• M58: 26,024,195 km (0.113 R)
• M59: 27,202,727 km (0.109 R)
• M60: 28,456,058 km (0.069 R)
• M61: 28,685,990 km (0.11 R)
• M62: 29,553,508 km (0.113 R)
• M63: 29,902,969 km (0.034 R)
• M64: 31,077,761 km (0.058 R)
• M65: 31,373,815 km (0.04 R)
• M66: 31,730,307 km (0.113 R)
• M67: 32,147,984 km (0.101 R)
• M68: 32,747,722 km (0.093 R)
• M69: 33,290,613 km (0.079 R)
• M70: 33,715,022 km (0.113 R)
• M71: 34,507,890 km (0.045 R)
• M72: 34,753,081 km (0.038 R)
• M73: 34,998,871 km (0.114 R)
• M74: 35,121,840 km (0.068 R)
• M75: 36,236,344 km (0.09 R)
• M76: 38,499,760 km (0.06 R)
• M77: 40,743,878 km (0.073 R)
• M78: 41,849,107 km (0.102 R)
• M79: 42,372,699 km (0.096 R)
• M80: 42,569,570 km (0.117 R)
• M81: 44,022,614 km (0.102 R)
• M82: 44,421,741 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 206.9

Radius: 5

Gravity: 8.28 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 8.72 AU - 11.9 AU

Year: 22851 Days

Day: 23.1 Hours

Environment

Temp: -239 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 55,794,268 km

• M1: 164,558 km (0.119 R)
• M2: 985,700 km (0.109 R)
• M3: 1,028,785 km (0.096 R)
• M4: 1,418,936 km (0.118 R)
• M5: 1,642,884 km (0.101 R)
• M6: 1,985,613 km (0.087 R)
• M7: 2,095,417 km (0.073 R)
• M8: 2,179,192 km (0.103 R)
• M9: 2,674,511 km (0.036 R)
• M10: 3,662,455 km (0.045 R)
• M11: 3,831,501 km (0.044 R)
• M12: 3,865,609 km (0.059 R)
• M13: 4,898,283 km (0.06 R)
• M14: 4,972,484 km (0.031 R)
• M15: 5,009,733 km (0.092 R)
• M16: 5,852,418 km (0.103 R)
• M17: 6,655,908 km (0.089 R)
• M18: 6,738,187 km (0.061 R)
• M19: 7,070,594 km (0.115 R)
• M20: 8,408,148 km (0.095 R)
• M21: 8,497,159 km (0.117 R)
• M22: 11,062,463 km (0.067 R)
• M23: 13,323,934 km (0.086 R)
• M24: 14,267,299 km (0.084 R)
• M25: 15,449,122 km (0.104 R)
• M26: 16,328,308 km (0.053 R)
• M27: 16,383,809 km (0.098 R)
• M28: 20,300,880 km (0.038 R)
• M29: 20,840,031 km (0.118 R)
• M30: 22,300,555 km (0.113 R)
• M31: 23,668,328 km (0.075 R)
• M32: 24,807,366 km (0.075 R)
• M33: 28,329,947 km (0.076 R)
• M34: 28,596,979 km (0.051 R)
• M35: 29,606,017 km (0.08 R)
• M36: 29,945,006 km (0.114 R)
• M37: 30,626,723 km (0.111 R)
• M38: 30,900,787 km (0.119 R)
• M39: 31,244,562 km (0.073 R)
• M40: 33,193,224 km (0.093 R)
• M41: 38,086,122 km (0.091 R)
• M42: 40,015,635 km (0.112 R)
• M43: 42,586,325 km (0.112 R)
• M44: 46,619,783 km (0.085 R)
• M45: 46,935,135 km (0.04 R)
• M46: 47,330,223 km (0.066 R)
• M47: 48,601,955 km (0.117 R)
• M48: 50,530,570 km (0.05 R)
• M49: 51,341,540 km (0.087 R)
• M50: 52,075,019 km (0.094 R)
• M51: 52,565,999 km (0.119 R)
• M52: 52,811,938 km (0.061 R)
• M53: 52,894,067 km (0.113 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 219 - 16,271 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit