🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.46 AU - 0.76 AU

Year: 313 Days

Day: 35.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 28.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,485,466 km

• M1: 236,065 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.64 AU - 0.68 AU

Year: 352 Days

Day: 39 Hours

Environment

Temp: -127 °C

Axial Tilt: 8.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.3

Radius: 12.9

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.79 AU - 0.89 AU

Year: 505 Days

Day: 8.1 Hours

Environment

Temp: -141 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 28,485,466 km

• M1: 179,517 km (0.077 R)
• M2: 267,481 km (0.057 R)
• M3: 414,386 km (0.114 R)
• M4: 511,475 km (0.101 R)
• M5: 618,587 km (0.103 R)
• M6: 840,441 km (0.12 R)
• M7: 1,048,232 km (0.094 R)
• M8: 1,169,556 km (0.094 R)
• M9: 1,386,772 km (0.114 R)
• M10: 1,521,261 km (0.111 R)
• M11: 1,778,719 km (0.096 R)
• M12: 1,906,475 km (0.065 R)
• M13: 1,991,148 km (0.083 R)
• M14: 2,157,949 km (0.111 R)
• M15: 2,274,037 km (0.067 R)
• M16: 2,541,219 km (0.064 R)
• M17: 2,627,836 km (0.074 R)
• M18: 2,908,631 km (0.066 R)
• M19: 2,991,808 km (0.076 R)
• M20: 3,121,958 km (0.116 R)
• M21: 3,253,903 km (0.077 R)
• M22: 3,356,228 km (0.109 R)
• M23: 3,443,593 km (0.054 R)
• M24: 3,539,934 km (0.116 R)
• M25: 3,620,867 km (0.106 R)
• M26: 3,859,027 km (0.045 R)
• M27: 3,942,353 km (0.089 R)
• M28: 4,119,477 km (0.076 R)
• M29: 4,333,701 km (0.098 R)
• M30: 4,551,814 km (0.057 R)
• M31: 4,791,321 km (0.067 R)
• M32: 4,872,103 km (0.113 R)
• M33: 4,962,461 km (0.087 R)
• M34: 5,062,542 km (0.111 R)
• M35: 5,153,946 km (0.028 R)
• M36: 5,246,098 km (0.106 R)
• M37: 5,403,924 km (0.097 R)
• M38: 5,506,847 km (0.087 R)
• M39: 5,657,791 km (0.111 R)
• M40: 5,781,509 km (0.11 R)
• M41: 5,915,698 km (0.098 R)
• M42: 6,216,540 km (0.065 R)
• M43: 6,393,663 km (0.057 R)
• M44: 6,532,490 km (0.114 R)
• M45: 6,692,410 km (0.072 R)
• M46: 6,793,090 km (0.115 R)
• M47: 6,894,218 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.6

Radius: 12.3

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.67 AU - 1.09 AU

Year: 542 Days

Day: 11.4 Hours

Environment

Temp: -162 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 28,485,466 km

• M1: 172,337 km (0.037 R)
• M2: 258,954 km (0.107 R)
• M3: 342,280 km (0.079 R)
• M4: 438,172 km (0.087 R)
• M5: 556,803 km (0.099 R)
• M6: 636,689 km (0.079 R)
• M7: 760,406 km (0.103 R)
• M8: 886,816 km (0.093 R)
• M9: 1,003,652 km (0.056 R)
• M10: 1,111,961 km (0.115 R)
• M11: 1,209,648 km (0.04 R)
• M12: 1,306,737 km (0.112 R)
• M13: 1,383,332 km (0.091 R)
• M14: 1,517,072 km (0.099 R)
• M15: 1,630,766 km (0.044 R)
• M16: 1,884,185 km (0.068 R)
• M17: 1,980,526 km (0.091 R)
• M18: 2,060,561 km (0.118 R)
• M19: 2,146,281 km (0.094 R)
• M20: 2,293,485 km (0.095 R)
• M21: 2,439,193 km (0.105 R)
• M22: 2,627,238 km (0.069 R)
• M23: 2,720,587 km (0.105 R)
• M24: 2,815,133 km (0.114 R)
• M25: 2,895,616 km (0.072 R)
• M26: 3,084,708 km (0.099 R)
• M27: 3,193,915 km (0.108 R)
• M28: 3,336,182 km (0.08 R)
• M29: 3,578,231 km (0.076 R)
• M30: 3,704,193 km (0.086 R)
• M31: 3,876,230 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458

Radius: 13.3

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 3.79 AU - 3.89 AU

Year: 4936 Days

Day: 9.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 28,485,466 km

• M1: 195,375 km (0.115 R)
• M2: 413,788 km (0.094 R)
• M3: 626,665 km (0.107 R)
• M4: 832,961 km (0.068 R)
• M5: 1,315,115 km (0.08 R)
• M6: 1,398,890 km (0.075 R)
• M7: 1,498,971 km (0.096 R)
• M8: 1,707,061 km (0.105 R)
• M9: 1,830,330 km (0.112 R)
• M10: 1,972,747 km (0.048 R)
• M11: 2,235,441 km (0.058 R)
• M12: 2,353,922 km (0.065 R)
• M13: 2,509,654 km (0.083 R)
• M14: 2,651,024 km (0.111 R)
• M15: 2,997,493 km (0.073 R)
• M16: 3,358,771 km (0.111 R)
• M17: 4,333,551 km (0.084 R)
• M18: 4,612,102 km (0.09 R)
• M19: 4,764,543 km (0.103 R)
• M20: 4,896,488 km (0.084 R)
• M21: 5,552,026 km (0.1 R)
• M22: 5,691,002 km (0.06 R)
• M23: 5,784,501 km (0.061 R)
• M24: 6,187,069 km (0.095 R)
• M25: 6,452,605 km (0.095 R)
• M26: 6,895,115 km (0.067 R)
• M27: 7,322,217 km (0.091 R)
• M28: 7,783,876 km (0.12 R)
• M29: 8,018,296 km (0.103 R)
• M30: 8,494,167 km (0.072 R)
• M31: 8,843,628 km (0.099 R)
• M32: 9,033,617 km (0.076 R)
• M33: 9,280,154 km (0.087 R)
• M34: 9,779,811 km (0.04 R)
• M35: 10,231,298 km (0.116 R)
• M36: 10,718,538 km (0.082 R)
• M37: 11,154,765 km (0.119 R)
• M38: 11,626,597 km (0.105 R)
• M39: 11,834,987 km (0.119 R)
• M40: 11,954,665 km (0.113 R)
• M41: 12,074,792 km (0.076 R)
• M42: 12,437,567 km (0.116 R)
• M43: 12,834,450 km (0.107 R)
• M44: 13,080,838 km (0.114 R)
• M45: 13,735,179 km (0.078 R)
• M46: 14,209,105 km (0.114 R)
• M47: 14,784,907 km (0.052 R)
• M48: 15,075,576 km (0.039 R)
• M49: 16,058,434 km (0.052 R)
• M50: 16,490,921 km (0.069 R)
• M51: 17,299,199 km (0.084 R)
• M52: 18,535,924 km (0.091 R)
• M53: 18,884,487 km (0.101 R)
• M54: 18,989,505 km (0.11 R)
• M55: 19,094,672 km (0.084 R)
• M56: 19,199,989 km (0.069 R)
• M57: 19,552,741 km (0.12 R)
• M58: 19,836,378 km (0.058 R)
• M59: 20,121,512 km (0.108 R)
• M60: 20,264,528 km (0.062 R)
• M61: 20,840,180 km (0.113 R)
• M62: 20,984,991 km (0.096 R)
• M63: 21,457,720 km (0.103 R)
• M64: 23,346,094 km (0.045 R)
• M65: 23,458,891 km (0.028 R)
• M66: 23,609,386 km (0.114 R)
• M67: 23,836,027 km (0.071 R)
• M68: 23,949,422 km (0.106 R)
• M69: 24,864,213 km (0.057 R)
• M70: 25,325,872 km (0.087 R)
• M71: 25,557,749 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.3

Radius: 9.9

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 4.21 AU - 5.05 AU

Year: 6536 Days

Day: 6.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 28,485,466 km

• M1: 204,799 km (0.096 R)
• M2: 273,016 km (0.047 R)
• M3: 436,078 km (0.112 R)
• M4: 715,826 km (0.11 R)
• M5: 788,231 km (0.092 R)
• M6: 889,210 km (0.087 R)
• M7: 1,063,042 km (0.098 R)
• M8: 1,367,773 km (0.114 R)
• M9: 1,444,517 km (0.061 R)
• M10: 1,650,813 km (0.119 R)
• M11: 1,849,927 km (0.069 R)
• M12: 2,056,971 km (0.093 R)
• M13: 2,588,642 km (0.062 R)
• M14: 3,060,024 km (0.11 R)
• M15: 3,243,731 km (0.069 R)
• M16: 3,410,083 km (0.092 R)
• M17: 3,622,213 km (0.067 R)
• M18: 3,751,466 km (0.091 R)
• M19: 3,948,337 km (0.074 R)
• M20: 4,014,758 km (0.087 R)
• M21: 4,081,479 km (0.056 R)
• M22: 4,284,184 km (0.082 R)
• M23: 4,722,655 km (0.106 R)
• M24: 4,816,902 km (0.063 R)
• M25: 6,072,028 km (0.067 R)
• M26: 6,148,921 km (0.112 R)
• M27: 6,802,066 km (0.093 R)
• M28: 6,908,729 km (0.086 R)
• M29: 7,836,984 km (0.064 R)
• M30: 8,401,267 km (0.103 R)
• M31: 8,862,178 km (0.07 R)
• M32: 9,125,021 km (0.107 R)
• M33: 9,420,178 km (0.09 R)
• M34: 9,539,108 km (0.104 R)
• M35: 9,628,568 km (0.076 R)
• M36: 9,718,476 km (0.107 R)
• M37: 10,232,644 km (0.081 R)
• M38: 10,355,015 km (0.118 R)
• M39: 11,828,105 km (0.096 R)
• M40: 12,605,416 km (0.088 R)
• M41: 12,736,464 km (0.103 R)
• M42: 13,066,476 km (0.107 R)
• M43: 13,533,072 km (0.063 R)
• M44: 13,633,752 km (0.061 R)
• M45: 13,869,667 km (0.091 R)
• M46: 15,383,448 km (0.12 R)
• M47: 15,593,932 km (0.062 R)
• M48: 15,876,074 km (0.062 R)
• M49: 16,302,428 km (0.066 R)
• M50: 16,373,936 km (0.092 R)
• M51: 16,912,937 km (0.054 R)
• M52: 17,166,505 km (0.107 R)
• M53: 17,384,918 km (0.086 R)
• M54: 17,824,437 km (0.103 R)
• M55: 17,971,641 km (0.084 R)
• M56: 18,378,846 km (0.104 R)
• M57: 18,527,696 km (0.073 R)
• M58: 18,751,644 km (0.066 R)
• M59: 19,126,985 km (0.119 R)
• M60: 21,157,328 km (0.117 R)
• M61: 21,665,661 km (0.084 R)
• M62: 21,744,350 km (0.103 R)
• M63: 21,862,382 km (0.092 R)
• M64: 22,178,184 km (0.084 R)
• M65: 22,854,366 km (0.052 R)
• M66: 22,934,251 km (0.117 R)
• M67: 23,014,436 km (0.11 R)
• M68: 23,094,620 km (0.113 R)
• M69: 23,416,256 km (0.029 R)
• M70: 23,618,063 km (0.104 R)
• M71: 24,964,294 km (0.09 R)
• M72: 25,129,151 km (0.118 R)
• M73: 25,294,307 km (0.107 R)
• M74: 26,293,322 km (0.119 R)
• M75: 26,629,169 km (0.112 R)
• M76: 27,051,035 km (0.111 R)
• M77: 28,072,489 km (0.064 R)
• M78: 28,158,209 km (0.1 R)
• M79: 28,243,928 km (0.099 R)
• M80: 28,544,919 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 979.9

Radius: 4.8

Gravity: 42.53 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 5.8 AU - 7.26 AU

Year: 10947 Days

Day: 18.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 28,485,466 km

• M1: 64,776 km (0.076 R)
• M2: 116,986 km (0.113 R)
• M3: 221,704 km (0.072 R)
• M4: 328,218 km (0.093 R)
• M5: 372,499 km (0.088 R)
• M6: 987,496 km (0.103 R)
• M7: 1,031,328 km (0.104 R)
• M8: 2,807,952 km (0.099 R)
• M9: 2,870,634 km (0.094 R)
• M10: 2,965,628 km (0.092 R)
• M11: 3,126,147 km (0.11 R)
• M12: 3,388,841 km (0.117 R)
• M13: 3,590,648 km (0.068 R)
• M14: 3,624,607 km (0.078 R)
• M15: 4,254,863 km (0.114 R)
• M16: 4,363,321 km (0.111 R)
• M17: 4,619,582 km (0.103 R)
• M18: 5,070,321 km (0.103 R)
• M19: 5,223,808 km (0.118 R)
• M20: 5,339,746 km (0.086 R)
• M21: 5,495,927 km (0.078 R)
• M22: 5,574,465 km (0.069 R)
• M23: 5,613,959 km (0.04 R)
• M24: 5,772,533 km (0.116 R)
• M25: 5,892,511 km (0.119 R)
• M26: 6,013,386 km (0.102 R)
• M27: 6,755,391 km (0.034 R)
• M28: 6,839,615 km (0.057 R)
• M29: 6,924,137 km (0.092 R)
• M30: 7,094,380 km (0.117 R)
• M31: 7,525,820 km (0.098 R)
• M32: 7,965,787 km (0.104 R)
• M33: 8,595,744 km (0.09 R)
• M34: 9,009,083 km (0.11 R)
• M35: 9,335,057 km (0.113 R)
• M36: 9,475,978 km (0.027 R)
• M37: 9,712,343 km (0.111 R)
• M38: 10,287,546 km (0.083 R)
• M39: 10,677,249 km (0.115 R)
• M40: 11,672,224 km (0.041 R)
• M41: 12,489,328 km (0.119 R)
• M42: 12,592,700 km (0.106 R)
• M43: 12,748,431 km (0.088 R)
• M44: 13,377,640 km (0.118 R)
• M45: 13,642,727 km (0.071 R)
• M46: 14,178,138 km (0.12 R)
• M47: 14,502,616 km (0.043 R)
• M48: 14,557,070 km (0.105 R)
• M49: 14,720,430 km (0.086 R)
• M50: 15,993,209 km (0.085 R)
• M51: 16,728,183 km (0.067 R)
• M52: 17,358,589 km (0.1 R)
• M53: 17,880,087 km (0.077 R)
• M54: 18,701,529 km (0.028 R)
• M55: 19,956,655 km (0.06 R)
• M56: 20,320,328 km (0.031 R)
• M57: 20,502,987 km (0.092 R)
• M58: 21,486,144 km (0.087 R)
• M59: 21,734,327 km (0.095 R)
• M60: 22,673,352 km (0.086 R)
• M61: 22,926,023 km (0.108 R)
• M62: 23,625,693 km (0.103 R)
• M63: 23,945,982 km (0.103 R)
• M64: 24,010,309 km (0.119 R)
• M65: 24,396,870 km (0.112 R)
• M66: 24,655,823 km (0.103 R)
• M67: 24,915,675 km (0.102 R)
• M68: 25,176,274 km (0.104 R)
• M69: 27,160,391 km (0.055 R)
• M70: 27,227,411 km (0.114 R)
• M71: 28,920,111 km (0.108 R)
• M72: 28,988,627 km (0.111 R)
• M73: 33,837,393 km (0.075 R)
• M74: 34,053,861 km (0.089 R)
• M75: 36,909,235 km (0.11 R)
• M76: 38,252,774 km (0.055 R)
• M77: 39,460,328 km (0.107 R)
• M78: 39,992,597 km (0.036 R)
• M79: 40,068,892 km (0.116 R)
• M80: 41,295,146 km (0.053 R)
• M81: 41,835,493 km (0.058 R)
• M82: 41,912,985 km (0.095 R)
• M83: 44,651,374 km (0.087 R)
• M84: 45,603,415 km (0.059 R)
• M85: 46,241,899 km (0.1 R)
• M86: 46,562,188 km (0.111 R)
• M87: 47,770,041 km (0.119 R)
• M88: 48,418,398 km (0.075 R)
• M89: 48,499,630 km (0.031 R)
• M90: 49,396,469 km (0.027 R)
• M91: 49,805,918 km (0.117 R)
• M92: 50,710,537 km (0.119 R)
• M93: 51,123,576 km (0.105 R)
• M94: 51,620,690 km (0.087 R)
• M95: 54,467,837 km (0.083 R)
• M96: 54,721,405 km (0.113 R)
• M97: 54,806,078 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 117.8

Radius: 4.7

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 5.27 AU - 7.87 AU

Year: 11047 Days

Day: 19.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 28,485,466 km

• M1: 121,473 km (0.098 R)
• M2: 228,885 km (0.093 R)
• M3: 277,354 km (0.08 R)
• M4: 329,863 km (0.069 R)
• M5: 405,261 km (0.091 R)
• M6: 445,353 km (0.07 R)
• M7: 619,186 km (0.066 R)
• M8: 654,042 km (0.051 R)
• M9: 701,614 km (0.081 R)
• M10: 851,661 km (0.113 R)
• M11: 984,504 km (0.089 R)
• M12: 1,269,787 km (0.109 R)
• M13: 1,390,811 km (0.085 R)
• M14: 1,421,778 km (0.113 R)
• M15: 2,068,639 km (0.072 R)
• M16: 2,211,356 km (0.101 R)
• M17: 2,265,660 km (0.044 R)
• M18: 2,320,413 km (0.081 R)
• M19: 2,601,058 km (0.117 R)
• M20: 2,912,222 km (0.111 R)
• M21: 2,991,808 km (0.113 R)
• M22: 3,031,900 km (0.06 R)
• M23: 3,379,865 km (0.079 R)
• M24: 3,654,526 km (0.111 R)
• M25: 3,980,351 km (0.089 R)
• M26: 4,113,343 km (0.05 R)
• M27: 4,157,923 km (0.102 R)
• M28: 4,452,033 km (0.064 R)
• M29: 4,917,581 km (0.055 R)
• M30: 5,969,853 km (0.077 R)
• M31: 6,020,417 km (0.077 R)
• M32: 6,982,032 km (0.056 R)
• M33: 7,358,121 km (0.063 R)
• M34: 7,494,105 km (0.1 R)
• M35: 7,630,838 km (0.117 R)
• M36: 8,186,145 km (0.088 R)
• M37: 8,326,917 km (0.099 R)
• M38: 8,383,614 km (0.106 R)
• M39: 8,468,586 km (0.104 R)
• M40: 8,611,153 km (0.104 R)
• M41: 8,697,022 km (0.108 R)
• M42: 8,754,318 km (0.104 R)
• M43: 8,811,913 km (0.036 R)
• M44: 8,956,275 km (0.099 R)
• M45: 9,276,564 km (0.1 R)
• M46: 9,482,411 km (0.047 R)
• M47: 9,659,983 km (0.089 R)
• M48: 10,351,125 km (0.046 R)
• M49: 10,381,494 km (0.08 R)
• M50: 10,472,898 km (0.048 R)
• M51: 12,420,812 km (0.117 R)
• M52: 12,680,065 km (0.081 R)
• M53: 12,875,739 km (0.051 R)
• M54: 13,138,283 km (0.056 R)
• M55: 13,171,195 km (0.093 R)
• M56: 13,468,745 km (0.07 R)
• M57: 14,273,282 km (0.047 R)
• M58: 14,408,818 km (0.098 R)
• M59: 15,300,571 km (0.118 R)
• M60: 15,404,691 km (0.064 R)
• M61: 15,823,266 km (0.027 R)
• M62: 15,928,433 km (0.092 R)
• M63: 16,422,555 km (0.119 R)
• M64: 16,921,614 km (0.099 R)
• M65: 17,029,174 km (0.058 R)
• M66: 17,172,938 km (0.095 R)
• M67: 17,353,353 km (0.104 R)
• M68: 18,707,214 km (0.079 R)
• M69: 19,191,013 km (0.115 R)
• M70: 19,415,709 km (0.036 R)
• M71: 19,905,343 km (0.117 R)
• M72: 20,935,474 km (0.1 R)
• M73: 21,398,779 km (0.098 R)
• M74: 21,476,270 km (0.077 R)
• M75: 23,126,484 km (0.037 R)
• M76: 23,685,532 km (0.111 R)
• M77: 23,725,624 km (0.093 R)
• M78: 23,966,776 km (0.078 R)
• M79: 24,816,940 km (0.09 R)
• M80: 25,348,162 km (0.115 R)
• M81: 25,676,979 km (0.043 R)
• M82: 26,380,388 km (0.105 R)
• M83: 26,588,329 km (0.105 R)
• M84: 27,131,967 km (0.067 R)
• M85: 27,510,450 km (0.095 R)
• M86: 27,636,860 km (0.071 R)
• M87: 28,400,258 km (0.116 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 13,491 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit