🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.52 AU - 0.72 AU

Year: 320 Days

Day: 34.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 35 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 855

Radius: 10.3

Gravity: 8.06 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.33 AU - 1.63 AU

Year: 1181 Days

Day: 10.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 27,145,479 km

• M1: 130,150 km (0.083 R)
• M2: 237,711 km (0.1 R)
• M3: 360,680 km (0.117 R)
• M4: 493,823 km (0.042 R)
• M5: 576,700 km (0.088 R)
• M6: 691,142 km (0.119 R)
• M7: 758,461 km (0.11 R)
• M8: 871,108 km (0.057 R)
• M9: 959,670 km (0.088 R)
• M10: 1,028,186 km (0.042 R)
• M11: 1,227,899 km (0.118 R)
• M12: 1,353,861 km (0.086 R)
• M13: 1,431,652 km (0.096 R)
• M14: 1,537,866 km (0.08 R)
• M15: 1,674,299 km (0.117 R)
• M16: 1,739,374 km (0.117 R)
• M17: 1,930,411 km (0.029 R)
• M18: 2,158,548 km (0.063 R)
• M19: 2,353,922 km (0.101 R)
• M20: 2,533,590 km (0.113 R)
• M21: 2,706,973 km (0.066 R)
• M22: 2,772,946 km (0.112 R)
• M23: 2,929,126 km (0.117 R)
• M24: 3,019,783 km (0.114 R)
• M25: 3,099,817 km (0.077 R)
• M26: 3,367,897 km (0.085 R)
• M27: 3,595,136 km (0.075 R)
• M28: 3,704,642 km (0.031 R)
• M29: 3,876,978 km (0.039 R)
• M30: 4,064,724 km (0.119 R)
• M31: 4,178,867 km (0.106 R)
• M32: 4,410,295 km (0.047 R)
• M33: 4,501,400 km (0.067 R)
• M34: 4,725,498 km (0.049 R)
• M35: 4,792,069 km (0.087 R)
• M36: 4,858,939 km (0.087 R)
• M37: 4,980,263 km (0.09 R)
• M38: 5,075,257 km (0.106 R)
• M39: 5,280,805 km (0.118 R)
• M40: 5,461,369 km (0.086 R)
• M41: 5,799,909 km (0.088 R)
• M42: 6,087,287 km (0.112 R)
• M43: 6,159,842 km (0.106 R)
• M44: 6,262,017 km (0.075 R)
• M45: 6,423,583 km (0.087 R)
• M46: 7,406,591 km (0.076 R)
• M47: 7,484,232 km (0.025 R)
• M48: 7,734,210 km (0.066 R)
• M49: 8,050,759 km (0.073 R)
• M50: 8,565,824 km (0.081 R)
• M51: 8,860,383 km (0.103 R)
• M52: 8,975,872 km (0.082 R)
• M53: 9,058,600 km (0.083 R)
• M54: 9,476,277 km (0.078 R)
• M55: 9,814,967 km (0.084 R)
• M56: 9,985,807 km (0.059 R)
• M57: 10,140,342 km (0.072 R)
• M58: 10,243,864 km (0.108 R)
• M59: 10,365,188 km (0.111 R)
• M60: 10,521,667 km (0.084 R)
• M61: 10,679,044 km (0.088 R)
• M62: 10,802,013 km (0.088 R)
• M63: 11,387,839 km (0.11 R)
• M64: 11,495,400 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.1

Radius: 10.4

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.71 AU - 2.55 AU

Year: 2039 Days

Day: 6.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 27,145,479 km

• M1: 145,409 km (0.07 R)
• M2: 216,767 km (0.074 R)
• M3: 282,142 km (0.103 R)
• M4: 353,051 km (0.095 R)
• M5: 419,622 km (0.038 R)
• M6: 613,052 km (0.119 R)
• M7: 761,902 km (0.068 R)
• M8: 828,473 km (0.06 R)
• M9: 1,004,400 km (0.074 R)
• M10: 1,163,722 km (0.058 R)
• M11: 1,362,388 km (0.113 R)
• M12: 1,455,438 km (0.057 R)
• M13: 1,561,503 km (0.093 R)
• M14: 1,838,408 km (0.045 R)
• M15: 2,000,273 km (0.067 R)
• M16: 2,118,904 km (0.08 R)
• M17: 2,350,931 km (0.115 R)
• M18: 2,695,006 km (0.112 R)
• M19: 2,773,694 km (0.052 R)
• M20: 2,879,759 km (0.114 R)
• M21: 2,987,320 km (0.048 R)
• M22: 3,220,244 km (0.102 R)
• M23: 3,374,180 km (0.098 R)
• M24: 4,029,419 km (0.106 R)
• M25: 4,104,517 km (0.074 R)
• M26: 4,550,318 km (0.066 R)
• M27: 4,723,403 km (0.091 R)
• M28: 4,930,895 km (0.108 R)
• M29: 5,125,073 km (0.064 R)
• M30: 5,288,883 km (0.116 R)
• M31: 5,487,848 km (0.101 R)
• M32: 5,655,398 km (0.066 R)
• M33: 5,841,797 km (0.098 R)
• M34: 6,030,141 km (0.111 R)
• M35: 6,307,794 km (0.075 R)
• M36: 6,643,043 km (0.043 R)
• M37: 6,750,155 km (0.106 R)
• M38: 6,839,764 km (0.03 R)
• M39: 6,966,025 km (0.114 R)
• M40: 7,111,135 km (0.118 R)
• M41: 7,478,547 km (0.095 R)
• M42: 7,589,998 km (0.112 R)
• M43: 8,117,480 km (0.045 R)
• M44: 8,385,559 km (0.106 R)
• M45: 8,773,766 km (0.101 R)
• M46: 9,447,255 km (0.041 R)
• M47: 10,157,845 km (0.093 R)
• M48: 10,822,508 km (0.086 R)
• M49: 11,117,815 km (0.102 R)
• M50: 11,415,814 km (0.076 R)
• M51: 11,737,898 km (0.117 R)
• M52: 11,824,365 km (0.102 R)
• M53: 12,391,192 km (0.116 R)
• M54: 12,700,111 km (0.082 R)
• M55: 12,811,113 km (0.086 R)
• M56: 13,168,353 km (0.091 R)
• M57: 13,596,801 km (0.102 R)
• M58: 13,801,301 km (0.099 R)
• M59: 13,869,817 km (0.081 R)
• M60: 14,375,009 km (0.034 R)
• M61: 14,444,273 km (0.065 R)
• M62: 14,933,009 km (0.077 R)
• M63: 15,356,072 km (0.094 R)
• M64: 15,616,671 km (0.1 R)
• M65: 15,807,109 km (0.118 R)
• M66: 15,974,360 km (0.055 R)
• M67: 16,070,252 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.2

Radius: 12.5

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.74 AU - 3.52 AU

Year: 3633 Days

Day: 10.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 27,145,479 km

• M1: 213,027 km (0.099 R)
• M2: 765,044 km (0.118 R)
• M3: 1,000,511 km (0.099 R)
• M4: 1,142,030 km (0.078 R)
• M5: 1,260,362 km (0.12 R)
• M6: 1,393,504 km (0.105 R)
• M7: 1,542,354 km (0.035 R)
• M8: 1,652,159 km (0.084 R)
• M9: 1,833,472 km (0.118 R)
• M10: 1,914,853 km (0.038 R)
• M11: 2,118,007 km (0.086 R)
• M12: 2,328,341 km (0.056 R)
• M13: 2,519,827 km (0.067 R)
• M14: 2,743,326 km (0.095 R)
• M15: 3,266,320 km (0.094 R)
• M16: 3,467,080 km (0.029 R)
• M17: 3,612,938 km (0.102 R)
• M18: 3,880,718 km (0.115 R)
• M19: 4,155,081 km (0.035 R)
• M20: 4,325,922 km (0.095 R)
• M21: 4,674,634 km (0.026 R)
• M22: 5,131,805 km (0.115 R)
• M23: 5,265,097 km (0.106 R)
• M24: 5,467,353 km (0.073 R)
• M25: 6,697,048 km (0.083 R)
• M26: 6,934,759 km (0.042 R)
• M27: 7,082,412 km (0.12 R)
• M28: 7,193,862 km (0.109 R)
• M29: 7,531,654 km (0.062 R)
• M30: 7,932,427 km (0.098 R)
• M31: 8,261,842 km (0.114 R)
• M32: 8,477,562 km (0.099 R)
• M33: 8,754,767 km (0.062 R)
• M34: 8,954,480 km (0.104 R)
• M35: 9,318,003 km (0.095 R)
• M36: 9,501,559 km (0.077 R)
• M37: 9,789,535 km (0.061 R)
• M38: 9,976,233 km (0.116 R)
• M39: 10,059,559 km (0.092 R)
• M40: 10,332,127 km (0.074 R)
• M41: 10,522,116 km (0.069 R)
• M42: 10,927,227 km (0.082 R)
• M43: 11,077,872 km (0.087 R)
• M44: 11,490,014 km (0.112 R)
• M45: 11,665,044 km (0.102 R)
• M46: 12,106,507 km (0.076 R)
• M47: 12,262,388 km (0.061 R)
• M48: 12,869,755 km (0.072 R)
• M49: 12,983,300 km (0.091 R)
• M50: 13,120,032 km (0.061 R)
• M51: 13,509,885 km (0.07 R)
• M52: 13,648,562 km (0.096 R)
• M53: 14,230,946 km (0.044 R)
• M54: 14,584,296 km (0.119 R)
• M55: 15,299,673 km (0.048 R)
• M56: 15,540,676 km (0.103 R)
• M57: 15,831,494 km (0.11 R)
• M58: 16,124,257 km (0.111 R)
• M59: 16,369,597 km (0.119 R)
• M60: 16,566,618 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 807.2

Radius: 12.2

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 3.11 AU - 4.03 AU

Year: 4425 Days

Day: 7.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 27,145,479 km

• M1: 281,543 km (0.12 R)
• M2: 359,932 km (0.083 R)
• M3: 468,989 km (0.084 R)
• M4: 647,609 km (0.082 R)
• M5: 1,021,753 km (0.082 R)
• M6: 1,337,255 km (0.095 R)
• M7: 1,491,042 km (0.03 R)
• M8: 1,602,492 km (0.118 R)
• M9: 1,766,601 km (0.067 R)
• M10: 2,006,107 km (0.062 R)
• M11: 2,094,221 km (0.112 R)
• M12: 2,497,836 km (0.083 R)
• M13: 2,593,129 km (0.114 R)
• M14: 2,906,238 km (0.071 R)
• M15: 3,335,883 km (0.102 R)
• M16: 3,590,498 km (0.086 R)
• M17: 4,232,273 km (0.109 R)
• M18: 4,392,642 km (0.07 R)
• M19: 4,766,637 km (0.11 R)
• M20: 5,102,484 km (0.117 R)
• M21: 5,446,110 km (0.067 R)
• M22: 5,570,726 km (0.073 R)
• M23: 5,873,512 km (0.117 R)
• M24: 6,868,188 km (0.083 R)
• M25: 7,302,620 km (0.088 R)
• M26: 7,467,776 km (0.04 R)
• M27: 7,858,227 km (0.082 R)
• M28: 8,055,845 km (0.115 R)
• M29: 8,255,259 km (0.104 R)
• M30: 9,098,692 km (0.04 R)
• M31: 10,306,695 km (0.047 R)
• M32: 10,430,412 km (0.074 R)
• M33: 10,616,662 km (0.087 R)
• M34: 10,804,108 km (0.112 R)
• M35: 11,628,990 km (0.048 R)
• M36: 11,854,584 km (0.111 R)
• M37: 11,984,136 km (0.083 R)
• M38: 12,474,069 km (0.104 R)
• M39: 12,837,741 km (0.073 R)
• M40: 12,937,373 km (0.094 R)
• M41: 13,440,172 km (0.057 R)
• M42: 13,541,450 km (0.057 R)
• M43: 13,812,820 km (0.092 R)
• M44: 14,881,547 km (0.096 R)
• M45: 14,986,415 km (0.052 R)
• M46: 16,263,533 km (0.107 R)
• M47: 16,552,107 km (0.049 R)
• M48: 16,697,067 km (0.117 R)
• M49: 16,988,185 km (0.091 R)
• M50: 17,871,560 km (0.112 R)
• M51: 18,393,806 km (0.101 R)
• M52: 18,807,744 km (0.11 R)
• M53: 19,148,677 km (0.052 R)
• M54: 19,377,113 km (0.109 R)
• M55: 19,568,149 km (0.098 R)
• M56: 19,952,018 km (0.106 R)
• M57: 20,261,087 km (0.095 R)
• M58: 20,338,579 km (0.104 R)
• M59: 20,454,966 km (0.081 R)
• M60: 21,001,147 km (0.114 R)
• M61: 21,079,686 km (0.099 R)
• M62: 21,197,420 km (0.048 R)
• M63: 21,394,291 km (0.106 R)
• M64: 21,829,620 km (0.082 R)
• M65: 22,307,735 km (0.11 R)
• M66: 22,387,770 km (0.057 R)
• M67: 23,436,900 km (0.104 R)
• M68: 23,681,343 km (0.069 R)
• M69: 24,957,562 km (0.095 R)
• M70: 25,457,518 km (0.065 R)
• M71: 26,044,989 km (0.075 R)
• M72: 26,255,922 km (0.117 R)
• M73: 27,791,245 km (0.057 R)
• M74: 28,136,368 km (0.115 R)
• M75: 28,222,835 km (0.09 R)
• M76: 28,439,602 km (0.069 R)
• M77: 29,399,422 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.5

Radius: 9.3

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 3.87 AU - 4.41 AU

Year: 5526 Days

Day: 8.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 27,145,479 km

• M1: 134,788 km (0.113 R)
• M2: 214,823 km (0.119 R)
• M3: 447,746 km (0.094 R)
• M4: 680,820 km (0.12 R)
• M5: 839,244 km (0.088 R)
• M6: 923,318 km (0.082 R)
• M7: 1,069,924 km (0.108 R)
• M8: 1,353,562 km (0.112 R)
• M9: 1,915,002 km (0.034 R)
• M10: 2,480,931 km (0.081 R)
• M11: 2,986,871 km (0.077 R)
• M12: 3,118,368 km (0.12 R)
• M13: 3,251,809 km (0.108 R)
• M14: 3,387,195 km (0.111 R)
• M15: 3,875,632 km (0.039 R)
• M16: 4,091,801 km (0.114 R)
• M17: 4,386,359 km (0.078 R)
• M18: 4,840,987 km (0.072 R)
• M19: 4,995,821 km (0.095 R)
• M20: 5,310,724 km (0.093 R)
• M21: 5,849,726 km (0.102 R)
• M22: 6,125,734 km (0.105 R)
• M23: 6,293,433 km (0.074 R)
• M24: 6,377,956 km (0.048 R)
• M25: 6,863,550 km (0.11 R)
• M26: 7,749,469 km (0.117 R)
• M27: 8,421,911 km (0.115 R)
• M28: 8,515,111 km (0.04 R)
• M29: 9,081,189 km (0.099 R)
• M30: 9,336,702 km (0.095 R)
• M31: 9,465,356 km (0.057 R)
• M32: 9,562,296 km (0.06 R)
• M33: 9,627,072 km (0.105 R)
• M34: 10,051,631 km (0.06 R)
• M35: 10,316,120 km (0.104 R)
• M36: 10,482,472 km (0.089 R)
• M37: 11,396,366 km (0.049 R)
• M38: 11,499,439 km (0.1 R)
• M39: 11,741,338 km (0.082 R)
• M40: 12,054,746 km (0.06 R)
• M41: 13,011,424 km (0.098 R)
• M42: 13,992,487 km (0.037 R)
• M43: 14,213,742 km (0.096 R)
• M44: 14,324,744 km (0.066 R)
• M45: 14,585,044 km (0.083 R)
• M46: 14,659,694 km (0.099 R)
• M47: 14,997,187 km (0.052 R)
• M48: 15,527,361 km (0.108 R)
• M49: 16,063,520 km (0.107 R)
• M50: 16,605,962 km (0.109 R)
• M51: 16,683,903 km (0.096 R)
• M52: 16,879,277 km (0.098 R)
• M53: 17,154,238 km (0.09 R)
• M54: 17,312,064 km (0.041 R)
• M55: 18,067,982 km (0.08 R)
• M56: 18,188,259 km (0.045 R)
• M57: 19,365,444 km (0.113 R)
• M58: 19,488,563 km (0.093 R)
• M59: 19,611,982 km (0.103 R)
• M60: 19,818,277 km (0.11 R)
• M61: 20,025,321 km (0.076 R)
• M62: 20,108,347 km (0.119 R)
• M63: 20,274,700 km (0.108 R)
• M64: 21,324,877 km (0.095 R)
• M65: 21,792,670 km (0.118 R)
• M66: 22,134,950 km (0.059 R)
• M67: 22,306,688 km (0.109 R)
• M68: 24,580,127 km (0.077 R)
• M69: 25,249,577 km (0.11 R)
• M70: 25,609,061 km (0.112 R)
• M71: 25,699,269 km (0.04 R)
• M72: 25,879,833 km (0.032 R)
• M73: 27,017,974 km (0.053 R)
• M74: 27,339,609 km (0.099 R)
• M75: 27,431,762 km (0.112 R)
• M76: 32,216,649 km (0.076 R)
• M77: 32,314,038 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 150.5

Radius: 10.6

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.66 AU - 6.88 AU

Year: 9092 Days

Day: 12.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 27,145,479 km

• M1: 151,094 km (0.055 R)
• M2: 219,909 km (0.039 R)
• M3: 347,965 km (0.089 R)
• M4: 686,654 km (0.048 R)
• M5: 885,619 km (0.081 R)
• M6: 1,064,090 km (0.04 R)
• M7: 1,942,379 km (0.095 R)
• M8: 2,126,384 km (0.117 R)
• M9: 2,194,750 km (0.085 R)
• M10: 2,511,898 km (0.106 R)
• M11: 2,976,549 km (0.089 R)
• M12: 3,092,188 km (0.032 R)
• M13: 3,985,138 km (0.054 R)
• M14: 4,637,384 km (0.118 R)
• M15: 5,183,117 km (0.118 R)
• M16: 5,440,127 km (0.029 R)
• M17: 5,558,309 km (0.115 R)
• M18: 5,725,410 km (0.09 R)
• M19: 5,991,096 km (0.071 R)
• M20: 6,260,970 km (0.09 R)
• M21: 6,335,171 km (0.092 R)
• M22: 6,459,786 km (0.106 R)
• M23: 6,685,828 km (0.082 R)
• M24: 6,787,255 km (0.113 R)
• M25: 7,017,187 km (0.112 R)
• M26: 7,171,872 km (0.109 R)
• M27: 7,511,010 km (0.117 R)
• M28: 7,642,806 km (0.075 R)
• M29: 7,722,242 km (0.108 R)
• M30: 8,016,052 km (0.107 R)
• M31: 8,975,274 km (0.116 R)
• M32: 9,682,573 km (0.076 R)
• M33: 9,912,654 km (0.059 R)
• M34: 10,232,195 km (0.094 R)
• M35: 10,821,611 km (0.108 R)
• M36: 11,090,438 km (0.12 R)
• M37: 11,634,675 km (0.046 R)
• M38: 12,033,354 km (0.118 R)
• M39: 12,187,739 km (0.068 R)
• M40: 12,311,905 km (0.06 R)
• M41: 13,096,845 km (0.1 R)
• M42: 13,511,530 km (0.117 R)
• M43: 13,672,049 km (0.113 R)
• M44: 14,092,718 km (0.107 R)
• M45: 14,353,616 km (0.071 R)
• M46: 14,715,045 km (0.031 R)
• M47: 14,979,833 km (0.106 R)
• M48: 15,246,117 km (0.111 R)
• M49: 15,346,348 km (0.107 R)
• M50: 15,952,668 km (0.118 R)
• M51: 16,054,544 km (0.112 R)
• M52: 16,122,462 km (0.053 R)
• M53: 16,807,770 km (0.09 R)
• M54: 16,945,998 km (0.044 R)
• M55: 17,607,520 km (0.071 R)
• M56: 17,959,224 km (0.092 R)
• M57: 18,633,612 km (0.102 R)
• M58: 19,244,120 km (0.026 R)
• M59: 19,388,782 km (0.098 R)
• M60: 19,861,212 km (0.11 R)
• M61: 20,044,020 km (0.091 R)
• M62: 20,264,079 km (0.09 R)
• M63: 20,780,491 km (0.042 R)
• M64: 21,638,434 km (0.072 R)
• M65: 21,751,231 km (0.077 R)
• M66: 21,939,575 km (0.082 R)
• M67: 22,015,122 km (0.089 R)
• M68: 22,318,058 km (0.101 R)
• M69: 22,431,902 km (0.032 R)
• M70: 22,774,929 km (0.03 R)
• M71: 23,004,562 km (0.107 R)
• M72: 23,775,440 km (0.094 R)
• M73: 23,853,081 km (0.116 R)
• M74: 24,320,275 km (0.052 R)
• M75: 24,476,605 km (0.086 R)
• M76: 24,554,994 km (0.086 R)
• M77: 26,018,959 km (0.11 R)
• M78: 26,178,879 km (0.115 R)
• M79: 26,580,250 km (0.057 R)
• M80: 26,983,566 km (0.051 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 203 - 17,690 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit