🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.59 AU - 0.67 AU

Year: 181 Days

Day: 14.5 Hours

Environment

Temp: 188 °C

Axial Tilt: 38.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.09 AU - 1.69 AU

Year: 593 Days

Day: 47.5 Hours

Environment

Temp: -23 °C

Axial Tilt: 9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 100,207,470 km

• M1: 46,076 km (0.109 R)
• M2: 475,272 km (0.036 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.22 AU - 1.82 AU

Year: 678 Days

Day: 41.8 Hours

Environment

Temp: -37 °C

Axial Tilt: 45.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 100,207,470 km

• M1: 71,657 km (0.102 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 3.12 AU - 4.82 AU

Year: 2861 Days

Day: 18.5 Hours

Environment

Temp: -111 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 100,207,470 km

• M1: 213,476 km (0.05 R)

Asteroid Belt

Center: 4.93 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.3

Radius: 8

Gravity: 12 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 5.51 AU - 6.27 AU

Year: 5170 Days

Day: 9.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 100,207,470 km

• M1: 189,989 km (0.072 R)
• M2: 355,295 km (0.035 R)
• M3: 617,241 km (0.079 R)
• M4: 743,202 km (0.112 R)
• M5: 1,050,775 km (0.068 R)
• M6: 1,187,508 km (0.074 R)
• M7: 1,250,339 km (0.035 R)
• M8: 1,346,680 km (0.111 R)
• M9: 1,650,663 km (0.106 R)
• M10: 1,846,935 km (0.114 R)
• M11: 2,069,986 km (0.058 R)
• M12: 2,184,727 km (0.079 R)
• M13: 2,242,921 km (0.058 R)
• M14: 2,440,689 km (0.082 R)
• M15: 2,685,581 km (0.068 R)
• M16: 2,895,766 km (0.099 R)
• M17: 3,309,853 km (0.103 R)
• M18: 3,399,462 km (0.118 R)
• M19: 3,719,452 km (0.102 R)
• M20: 3,789,164 km (0.09 R)
• M21: 4,314,702 km (0.094 R)
• M22: 4,462,056 km (0.081 R)
• M23: 4,837,696 km (0.099 R)
• M24: 5,171,449 km (0.052 R)
• M25: 5,301,749 km (0.039 R)
• M26: 6,439,590 km (0.107 R)
• M27: 6,523,664 km (0.083 R)
• M28: 6,806,554 km (0.103 R)
• M29: 7,064,759 km (0.072 R)
• M30: 7,355,279 km (0.069 R)
• M31: 7,590,596 km (0.086 R)
• M32: 7,978,354 km (0.103 R)
• M33: 8,220,104 km (0.055 R)
• M34: 8,928,749 km (0.113 R)
• M35: 9,433,193 km (0.029 R)
• M36: 9,560,650 km (0.075 R)
• M37: 9,656,842 km (0.096 R)
• M38: 9,979,225 km (0.064 R)
• M39: 10,141,838 km (0.058 R)
• M40: 10,272,587 km (0.088 R)
• M41: 10,901,047 km (0.045 R)
• M42: 11,034,937 km (0.1 R)
• M43: 11,405,940 km (0.091 R)
• M44: 11,781,132 km (0.078 R)
• M45: 11,987,427 km (0.057 R)
• M46: 12,160,362 km (0.04 R)
• M47: 12,930,791 km (0.079 R)
• M48: 13,001,701 km (0.066 R)
• M49: 13,286,236 km (0.116 R)
• M50: 13,897,792 km (0.06 R)
• M51: 14,006,699 km (0.051 R)
• M52: 14,261,913 km (0.096 R)
• M53: 15,073,930 km (0.113 R)
• M54: 15,372,827 km (0.109 R)
• M55: 15,598,420 km (0.081 R)
• M56: 15,938,756 km (0.081 R)
• M57: 16,014,751 km (0.118 R)
• M58: 16,090,747 km (0.118 R)
• M59: 16,243,337 km (0.073 R)
• M60: 17,013,167 km (0.099 R)
• M61: 17,168,600 km (0.087 R)
• M62: 17,834,460 km (0.054 R)
• M63: 18,071,423 km (0.067 R)
• M64: 18,309,433 km (0.112 R)
• M65: 18,628,376 km (0.096 R)
• M66: 19,393,419 km (0.105 R)
• M67: 19,474,501 km (0.056 R)
• M68: 19,963,686 km (0.119 R)
• M69: 20,498,050 km (0.032 R)
• M70: 20,622,066 km (0.04 R)
• M71: 22,171,900 km (0.102 R)
• M72: 23,326,347 km (0.095 R)
• M73: 25,559,694 km (0.103 R)
• M74: 25,916,186 km (0.058 R)
• M75: 26,139,984 km (0.079 R)
• M76: 26,274,472 km (0.069 R)
• M77: 26,499,019 km (0.092 R)
• M78: 26,589,077 km (0.106 R)
• M79: 27,495,191 km (0.109 R)
• M80: 27,586,446 km (0.119 R)
• M81: 27,677,700 km (0.029 R)
• M82: 28,642,008 km (0.095 R)
• M83: 29,244,589 km (0.081 R)
• M84: 30,320,796 km (0.099 R)
• M85: 30,414,893 km (0.106 R)
• M86: 31,743,920 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.6

Radius: 9.6

Gravity: 9.65 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 5.78 AU - 8.36 AU

Year: 6799 Days

Day: 6.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 100,207,470 km

• M1: 133,591 km (0.066 R)
• M2: 288,425 km (0.115 R)
• M3: 361,129 km (0.089 R)
• M4: 441,912 km (0.111 R)
• M5: 543,339 km (0.037 R)
• M6: 653,593 km (0.075 R)
• M7: 898,186 km (0.091 R)
• M8: 1,014,573 km (0.073 R)
• M9: 1,118,394 km (0.035 R)
• M10: 1,413,401 km (0.117 R)
• M11: 1,510,639 km (0.101 R)
• M12: 1,671,158 km (0.039 R)
• M13: 1,879,697 km (0.032 R)
• M14: 2,253,842 km (0.09 R)
• M15: 2,322,357 km (0.088 R)
• M16: 2,438,146 km (0.09 R)
• M17: 2,748,113 km (0.09 R)
• M18: 2,920,300 km (0.111 R)
• M19: 3,045,513 km (0.107 R)
• M20: 3,249,565 km (0.084 R)
• M21: 3,327,356 km (0.077 R)
• M22: 3,833,894 km (0.039 R)
• M23: 4,422,113 km (0.061 R)
• M24: 4,770,826 km (0.117 R)
• M25: 5,098,445 km (0.043 R)
• M26: 5,158,733 km (0.087 R)
• M27: 5,433,245 km (0.041 R)
• M28: 5,556,813 km (0.111 R)
• M29: 6,028,645 km (0.053 R)
• M30: 6,124,537 km (0.098 R)
• M31: 6,415,355 km (0.075 R)
• M32: 6,480,580 km (0.118 R)
• M33: 6,776,933 km (0.118 R)
• M34: 7,111,434 km (0.035 R)
• M35: 7,519,986 km (0.109 R)
• M36: 7,692,472 km (0.092 R)
• M37: 8,147,100 km (0.057 R)
• M38: 8,395,582 km (0.041 R)
• M39: 8,502,844 km (0.114 R)
• M40: 8,754,916 km (0.086 R)
• M41: 9,675,093 km (0.095 R)
• M42: 10,051,780 km (0.119 R)
• M43: 10,433,255 km (0.105 R)
• M44: 11,407,735 km (0.119 R)
• M45: 11,765,573 km (0.09 R)
• M46: 12,451,779 km (0.044 R)
• M47: 12,861,527 km (0.084 R)
• M48: 13,484,303 km (0.103 R)
• M49: 14,074,467 km (0.045 R)
• M50: 14,202,074 km (0.093 R)
• M51: 14,415,550 km (0.062 R)
• M52: 14,802,560 km (0.11 R)
• M53: 15,411,273 km (0.106 R)
• M54: 17,422,766 km (0.074 R)
• M55: 17,927,061 km (0.09 R)
• M56: 18,203,966 km (0.118 R)
• M57: 19,184,880 km (0.085 R)
• M58: 19,991,362 km (0.095 R)
• M59: 20,760,445 km (0.114 R)
• M60: 21,246,189 km (0.114 R)
• M61: 21,441,564 km (0.107 R)
• M62: 22,030,979 km (0.086 R)
• M63: 23,025,356 km (0.051 R)
• M64: 23,780,826 km (0.056 R)
• M65: 24,595,536 km (0.12 R)
• M66: 24,749,322 km (0.063 R)
• M67: 25,626,714 km (0.116 R)
• M68: 26,095,404 km (0.109 R)
• M69: 26,566,787 km (0.078 R)
• M70: 26,935,545 km (0.091 R)
• M71: 27,093,970 km (0.118 R)
• M72: 28,480,891 km (0.094 R)
• M73: 28,750,168 km (0.118 R)
• M74: 28,858,177 km (0.113 R)
• M75: 29,020,341 km (0.111 R)
• M76: 29,345,717 km (0.1 R)
• M77: 29,508,778 km (0.064 R)
• M78: 30,548,932 km (0.105 R)
• M79: 30,879,843 km (0.108 R)
• M80: 31,101,098 km (0.116 R)
• M81: 32,215,602 km (0.077 R)
• M82: 33,173,029 km (0.037 R)
• M83: 33,399,669 km (0.039 R)
• M84: 35,000,666 km (0.079 R)
• M85: 35,404,730 km (0.096 R)
• M86: 35,926,677 km (0.095 R)
• M87: 36,275,988 km (0.044 R)
• M88: 36,451,167 km (0.055 R)
• M89: 36,743,481 km (0.075 R)
• M90: 36,860,766 km (0.11 R)
• M91: 38,991,488 km (0.102 R)
• M92: 39,470,351 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.7

Radius: 9

Gravity: 10.07 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 7.59 AU - 11.61 AU

Year: 10757 Days

Day: 12.5 Hours

Environment

Temp: -179 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 100,207,470 km

• M1: 116,686 km (0.107 R)
• M2: 209,736 km (0.112 R)
• M3: 445,652 km (0.107 R)
• M4: 553,811 km (0.059 R)
• M5: 855,401 km (0.059 R)
• M6: 973,733 km (0.04 R)
• M7: 1,549,086 km (0.095 R)
• M8: 1,645,876 km (0.04 R)
• M9: 2,214,796 km (0.096 R)
• M10: 3,142,453 km (0.085 R)
• M11: 3,297,436 km (0.11 R)
• M12: 3,875,782 km (0.117 R)
• M13: 4,980,263 km (0.101 R)
• M14: 5,124,774 km (0.039 R)
• M15: 5,197,628 km (0.094 R)
• M16: 6,021,464 km (0.116 R)
• M17: 6,292,086 km (0.103 R)
• M18: 6,885,392 km (0.073 R)
• M19: 7,373,081 km (0.034 R)
• M20: 7,871,690 km (0.11 R)
• M21: 8,125,259 km (0.078 R)
• M22: 8,596,941 km (0.027 R)
• M23: 9,033,467 km (0.05 R)
• M24: 9,522,054 km (0.097 R)
• M25: 10,386,281 km (0.117 R)
• M26: 10,524,958 km (0.044 R)
• M27: 10,617,858 km (0.081 R)
• M28: 11,038,976 km (0.101 R)
• M29: 12,042,778 km (0.069 R)
• M30: 12,286,174 km (0.094 R)
• M31: 12,629,501 km (0.116 R)
• M32: 12,728,236 km (0.084 R)
• M33: 13,125,568 km (0.105 R)
• M34: 14,187,862 km (0.114 R)
• M35: 14,651,615 km (0.094 R)
• M36: 15,541,124 km (0.041 R)
• M37: 16,126,052 km (0.064 R)
• M38: 17,757,566 km (0.072 R)
• M39: 17,978,971 km (0.062 R)
• M40: 19,726,424 km (0.04 R)
• M41: 19,955,758 km (0.085 R)
• M42: 20,999,053 km (0.08 R)
• M43: 21,174,681 km (0.112 R)
• M44: 21,233,323 km (0.112 R)
• M45: 21,941,220 km (0.085 R)
• M46: 23,198,740 km (0.107 R)
• M47: 23,440,939 km (0.076 R)
• M48: 23,805,808 km (0.085 R)
• M49: 24,664,351 km (0.102 R)
• M50: 24,973,420 km (0.1 R)
• M51: 26,033,919 km (0.074 R)
• M52: 27,620,105 km (0.103 R)
• M53: 28,651,583 km (0.102 R)
• M54: 29,761,300 km (0.076 R)
• M55: 29,892,796 km (0.102 R)
• M56: 30,685,665 km (0.112 R)
• M57: 31,218,233 km (0.111 R)
• M58: 33,446,793 km (0.099 R)
• M59: 33,926,104 km (0.092 R)
• M60: 34,132,250 km (0.097 R)
• M61: 34,753,081 km (0.113 R)
• M62: 35,169,113 km (0.099 R)
• M63: 35,656,503 km (0.1 R)
• M64: 36,286,310 km (0.097 R)
• M65: 37,628,203 km (0.073 R)
• M66: 38,269,529 km (0.088 R)
• M67: 39,202,272 km (0.067 R)
• M68: 39,635,208 km (0.083 R)
• M69: 39,924,829 km (0.049 R)
• M70: 40,724,729 km (0.075 R)
• M71: 40,943,740 km (0.065 R)
• M72: 42,488,189 km (0.095 R)
• M73: 43,453,694 km (0.086 R)
• M74: 43,528,343 km (0.119 R)
• M75: 44,276,482 km (0.117 R)
• M76: 44,727,370 km (0.062 R)
• M77: 45,179,754 km (0.109 R)
• M78: 46,317,595 km (0.074 R)
• M79: 47,157,886 km (0.044 R)
• M80: 47,695,242 km (0.072 R)
• M81: 48,234,542 km (0.04 R)
• M82: 49,163,994 km (0.088 R)
• M83: 49,319,426 km (0.095 R)
• M84: 49,475,157 km (0.1 R)
• M85: 51,040,550 km (0.102 R)
• M86: 51,355,453 km (0.084 R)
• M87: 51,434,291 km (0.084 R)
• M88: 51,829,229 km (0.116 R)
• M89: 52,304,502 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.4

Radius: 8.7

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 10.19 AU - 11.11 AU

Year: 12569 Days

Day: 14.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 100,207,470 km

• M1: 206,295 km (0.085 R)
• M2: 436,078 km (0.099 R)
• M3: 734,376 km (0.12 R)
• M4: 1,497,325 km (0.087 R)
• M5: 1,800,560 km (0.116 R)
• M6: 1,925,025 km (0.09 R)
• M7: 2,451,460 km (0.118 R)
• M8: 2,782,969 km (0.032 R)
• M9: 3,061,072 km (0.057 R)
• M10: 3,128,690 km (0.116 R)
• M11: 3,759,245 km (0.094 R)
• M12: 3,992,917 km (0.114 R)
• M13: 4,459,064 km (0.097 R)
• M14: 4,597,591 km (0.057 R)
• M15: 4,800,446 km (0.075 R)
• M16: 5,295,765 km (0.106 R)
• M17: 5,508,343 km (0.104 R)
• M18: 5,824,144 km (0.101 R)
• M19: 6,683,285 km (0.115 R)
• M20: 7,199,697 km (0.03 R)
• M21: 7,508,467 km (0.1 R)
• M22: 7,710,424 km (0.115 R)
• M23: 8,460,358 km (0.097 R)
• M24: 9,253,077 km (0.094 R)
• M25: 9,568,878 km (0.104 R)
• M26: 10,028,892 km (0.099 R)
• M27: 10,292,184 km (0.09 R)
• M28: 11,515,595 km (0.064 R)
• M29: 12,219,752 km (0.11 R)
• M30: 12,522,838 km (0.101 R)
• M31: 12,609,754 km (0.092 R)
• M32: 14,074,467 km (0.047 R)
• M33: 14,551,684 km (0.102 R)
• M34: 14,849,833 km (0.074 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 593.7

Radius: 6.5

Gravity: 14.05 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 17.22 AU - 22.88 AU

Year: 32468 Days

Day: 15.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 100,207,470 km

• M1: 97,239 km (0.1 R)
• M2: 212,429 km (0.036 R)
• M3: 549,922 km (0.087 R)
• M4: 822,489 km (0.033 R)
• M5: 1,337,255 km (0.117 R)
• M6: 1,552,377 km (0.047 R)
• M7: 1,664,127 km (0.084 R)
• M8: 2,096,465 km (0.054 R)
• M9: 2,874,822 km (0.109 R)
• M10: 3,152,626 km (0.074 R)
• M11: 3,536,344 km (0.066 R)
• M12: 3,733,813 km (0.03 R)
• M13: 4,558,995 km (0.077 R)
• M14: 4,719,962 km (0.107 R)
• M15: 5,213,785 km (0.084 R)
• M16: 6,014,433 km (0.112 R)
• M17: 6,730,707 km (0.097 R)
• M18: 7,348,098 km (0.106 R)
• M19: 7,791,057 km (0.08 R)
• M20: 8,373,292 km (0.094 R)
• M21: 8,769,128 km (0.06 R)
• M22: 9,442,468 km (0.118 R)
• M23: 9,716,382 km (0.093 R)
• M24: 9,992,988 km (0.032 R)
• M25: 11,053,338 km (0.092 R)
• M26: 11,269,656 km (0.077 R)
• M27: 11,487,321 km (0.117 R)
• M28: 12,000,741 km (0.094 R)
• M29: 13,049,871 km (0.107 R)
• M30: 14,284,652 km (0.104 R)
• M31: 14,678,094 km (0.037 R)
• M32: 15,314,932 km (0.118 R)
• M33: 15,798,582 km (0.076 R)
• M34: 18,205,762 km (0.042 R)
• M35: 18,546,546 km (0.078 R)
• M36: 22,341,993 km (0.058 R)
• M37: 22,524,203 km (0.064 R)
• M38: 22,890,120 km (0.074 R)
• M39: 23,073,826 km (0.029 R)
• M40: 23,442,734 km (0.056 R)
• M41: 25,411,143 km (0.084 R)
• M42: 25,887,463 km (0.086 R)
• M43: 28,018,634 km (0.075 R)
• M44: 30,608,772 km (0.093 R)
• M45: 30,811,177 km (0.106 R)
• M46: 33,274,306 km (0.096 R)
• M47: 33,795,356 km (0.115 R)
• M48: 37,193,621 km (0.114 R)
• M49: 37,626,108 km (0.115 R)
• M50: 37,734,417 km (0.098 R)
• M51: 39,262,260 km (0.109 R)
• M52: 39,923,184 km (0.094 R)
• M53: 40,033,737 km (0.07 R)
• M54: 40,144,439 km (0.109 R)
• M55: 41,928,094 km (0.083 R)
• M56: 44,079,761 km (0.047 R)
• M57: 44,766,564 km (0.097 R)
• M58: 45,572,448 km (0.113 R)
• M59: 45,919,216 km (0.036 R)
• M60: 48,489,158 km (0.081 R)
• M61: 48,843,256 km (0.081 R)
• M62: 51,826,986 km (0.089 R)
• M63: 52,068,287 km (0.096 R)
• M64: 52,915,609 km (0.09 R)
• M65: 53,401,802 km (0.03 R)
• M66: 55,115,147 km (0.045 R)
• M67: 55,607,922 km (0.081 R)
• M68: 57,469,069 km (0.077 R)
• M69: 58,344,666 km (0.117 R)
• M70: 58,972,677 km (0.099 R)
• M71: 59,729,343 km (0.104 R)
• M72: 60,108,873 km (0.11 R)
• M73: 60,235,583 km (0.105 R)
• M74: 62,018,490 km (0.068 R)
• M75: 63,947,854 km (0.043 R)
• M76: 65,635,916 km (0.118 R)
• M77: 66,551,006 km (0.114 R)
• M78: 67,601,931 km (0.041 R)
• M79: 72,129,062 km (0.115 R)
• M80: 73,073,174 km (0.061 R)
• M81: 78,684,740 km (0.067 R)
• M82: 80,772,079 km (0.062 R)
• M83: 80,911,953 km (0.1 R)
• M84: 82,314,433 km (0.056 R)
• M85: 83,159,661 km (0.11 R)
• M86: 85,428,014 km (0.102 R)
• M87: 92,646,261 km (0.115 R)
• M88: 93,378,841 km (0.109 R)
• M89: 95,587,803 km (0.059 R)
• M90: 96,773,067 km (0.104 R)
• M91: 97,070,169 km (0.094 R)
• M92: 97,516,270 km (0.098 R)

Kuiper Belt

Range: 30.3 - 49.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 410 - 12,886 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit