🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.8

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.52 AU - 0.54 AU

Year: 253 Days

Day: 26.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 27,453,495 km

• M1: 217,216 km (0.026 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 946.7

Radius: 11

Gravity: 7.82 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.73 AU - 0.83 AU

Year: 452 Days

Day: 5.5 Hours

Environment

Temp: -146 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 27,453,495 km

• M1: 137,032 km (0.098 R)
• M2: 213,177 km (0.111 R)
• M3: 402,418 km (0.11 R)
• M4: 518,506 km (0.108 R)
• M5: 606,171 km (0.099 R)
• M6: 752,776 km (0.099 R)
• M7: 873,652 km (0.074 R)
• M8: 1,006,644 km (0.1 R)
• M9: 1,104,481 km (0.077 R)
• M10: 1,200,224 km (0.09 R)
• M11: 1,276,818 km (0.089 R)
• M12: 1,372,261 km (0.101 R)
• M13: 1,470,098 km (0.116 R)
• M14: 1,679,236 km (0.072 R)
• M15: 1,975,739 km (0.114 R)
• M16: 2,180,539 km (0.119 R)
• M17: 2,268,502 km (0.072 R)
• M18: 2,337,168 km (0.064 R)
• M19: 2,427,225 km (0.078 R)
• M20: 2,568,296 km (0.088 R)
• M21: 2,647,134 km (0.116 R)
• M22: 2,903,246 km (0.108 R)
• M23: 2,985,525 km (0.088 R)
• M24: 3,076,181 km (0.119 R)
• M25: 3,252,407 km (0.07 R)
• M26: 3,330,049 km (0.092 R)
• M27: 3,647,196 km (0.105 R)
• M28: 3,809,360 km (0.108 R)
• M29: 3,932,629 km (0.06 R)
• M30: 4,115,886 km (0.068 R)
• M31: 4,319,040 km (0.073 R)
• M32: 4,413,287 km (0.067 R)
• M33: 4,569,018 km (0.104 R)
• M34: 4,638,880 km (0.08 R)
• M35: 4,761,850 km (0.042 R)
• M36: 4,886,016 km (0.094 R)
• M37: 4,975,326 km (0.111 R)
• M38: 5,083,186 km (0.083 R)
• M39: 5,283,049 km (0.08 R)
• M40: 5,467,054 km (0.107 R)
• M41: 5,662,579 km (0.045 R)
• M42: 5,879,346 km (0.095 R)
• M43: 5,984,064 km (0.118 R)
• M44: 6,060,659 km (0.052 R)
• M45: 6,147,126 km (0.072 R)
• M46: 6,272,788 km (0.116 R)
• M47: 6,370,027 km (0.097 R)
• M48: 6,457,990 km (0.103 R)
• M49: 6,546,253 km (0.045 R)
• M50: 6,744,171 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.9

Radius: 13.5

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.59 AU - 1.59 AU

Year: 1315 Days

Day: 12.9 Hours

Environment

Temp: -177 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 27,453,495 km

• M1: 171,290 km (0.062 R)
• M2: 302,337 km (0.119 R)
• M3: 402,269 km (0.084 R)
• M4: 683,064 km (0.107 R)
• M5: 842,685 km (0.087 R)
• M6: 1,094,308 km (0.028 R)
• M7: 1,243,607 km (0.09 R)
• M8: 1,533,528 km (0.112 R)
• M9: 1,959,882 km (0.032 R)
• M10: 2,110,228 km (0.068 R)
• M11: 2,316,972 km (0.038 R)
• M12: 2,566,950 km (0.117 R)
• M13: 2,835,179 km (0.037 R)
• M14: 3,035,341 km (0.089 R)
• M15: 3,181,199 km (0.096 R)
• M16: 3,379,416 km (0.089 R)
• M17: 3,469,923 km (0.105 R)
• M18: 3,602,317 km (0.089 R)
• M19: 3,767,473 km (0.118 R)
• M20: 4,041,237 km (0.052 R)
• M21: 4,159,120 km (0.113 R)
• M22: 4,278,200 km (0.086 R)
• M23: 4,475,370 km (0.098 R)
• M24: 4,630,952 km (0.116 R)
• M25: 4,890,504 km (0.067 R)
• M26: 4,993,278 km (0.103 R)
• M27: 5,085,430 km (0.066 R)
• M28: 5,412,152 km (0.083 R)
• M29: 5,673,649 km (0.097 R)
• M30: 6,086,240 km (0.072 R)
• M31: 6,321,108 km (0.106 R)
• M32: 6,533,687 km (0.106 R)
• M33: 6,736,093 km (0.096 R)
• M34: 7,082,262 km (0.111 R)
• M35: 7,329,398 km (0.112 R)
• M36: 7,579,526 km (0.09 R)
• M37: 8,074,545 km (0.064 R)
• M38: 8,291,911 km (0.099 R)
• M39: 8,552,510 km (0.1 R)
• M40: 8,704,651 km (0.04 R)
• M41: 8,829,865 km (0.102 R)
• M42: 8,969,739 km (0.075 R)
• M43: 9,068,025 km (0.104 R)
• M44: 9,336,553 km (0.038 R)
• M45: 9,564,839 km (0.104 R)
• M46: 9,751,687 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.5

Radius: 12.4

Gravity: 4.87 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.55 AU - 1.95 AU

Year: 1519 Days

Day: 7.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 27,453,495 km

• M1: 154,684 km (0.077 R)
• M2: 309,668 km (0.107 R)
• M3: 498,759 km (0.111 R)
• M4: 654,640 km (0.097 R)
• M5: 791,074 km (0.116 R)
• M6: 1,103,135 km (0.037 R)
• M7: 1,180,926 km (0.117 R)
• M8: 1,260,661 km (0.106 R)
• M9: 1,473,240 km (0.083 R)
• M10: 1,768,696 km (0.086 R)
• M11: 1,913,207 km (0.112 R)
• M12: 2,094,221 km (0.068 R)
• M13: 2,247,708 km (0.107 R)
• M14: 2,439,044 km (0.042 R)
• M15: 2,742,428 km (0.108 R)
• M16: 2,972,061 km (0.117 R)
• M17: 3,258,391 km (0.115 R)
• M18: 3,450,176 km (0.1 R)
• M19: 4,020,443 km (0.04 R)
• M20: 4,102,422 km (0.1 R)
• M21: 5,308,331 km (0.12 R)
• M22: 5,428,608 km (0.117 R)
• M23: 5,656,744 km (0.106 R)
• M24: 6,044,053 km (0.068 R)
• M25: 6,154,008 km (0.085 R)
• M26: 6,504,067 km (0.076 R)
• M27: 6,795,334 km (0.086 R)
• M28: 6,909,776 km (0.078 R)
• M29: 7,057,878 km (0.083 R)
• M30: 7,140,606 km (0.084 R)
• M31: 7,223,782 km (0.067 R)
• M32: 7,728,974 km (0.096 R)
• M33: 8,054,948 km (0.12 R)
• M34: 8,245,685 km (0.102 R)
• M35: 8,420,565 km (0.09 R)
• M36: 8,667,252 km (0.028 R)
• M37: 8,880,728 km (0.11 R)
• M38: 9,005,941 km (0.061 R)
• M39: 9,095,850 km (0.096 R)
• M40: 9,204,009 km (0.097 R)
• M41: 9,294,665 km (0.097 R)
• M42: 9,494,827 km (0.115 R)
• M43: 10,103,990 km (0.108 R)
• M44: 10,347,535 km (0.06 R)
• M45: 10,460,631 km (0.094 R)
• M46: 10,669,021 km (0.066 R)
• M47: 10,897,756 km (0.107 R)
• M48: 11,186,181 km (0.107 R)
• M49: 11,360,462 km (0.075 R)
• M50: 11,535,492 km (0.101 R)
• M51: 11,731,166 km (0.064 R)
• M52: 11,809,854 km (0.089 R)
• M53: 12,046,518 km (0.119 R)
• M54: 12,284,977 km (0.11 R)
• M55: 13,582,589 km (0.113 R)
• M56: 13,665,167 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.7

Radius: 13.7

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.54 AU - 2.2 AU

Year: 1678 Days

Day: 7.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 27,453,495 km

• M1: 181,462 km (0.09 R)
• M2: 267,930 km (0.081 R)
• M3: 398,978 km (0.043 R)
• M4: 535,560 km (0.113 R)
• M5: 699,520 km (0.055 R)
• M6: 808,726 km (0.079 R)
• M7: 958,922 km (0.095 R)
• M8: 1,231,639 km (0.116 R)
• M9: 1,468,453 km (0.094 R)
• M10: 1,561,203 km (0.108 R)
• M11: 1,677,591 km (0.104 R)
• M12: 1,774,979 km (0.06 R)
• M13: 1,863,241 km (0.108 R)
• M14: 2,090,929 km (0.092 R)
• M15: 2,315,775 km (0.118 R)
• M16: 2,511,449 km (0.081 R)
• M17: 2,789,701 km (0.107 R)
• M18: 2,972,061 km (0.093 R)
• M19: 3,226,078 km (0.049 R)
• M20: 3,585,263 km (0.117 R)
• M21: 4,045,426 km (0.08 R)
• M22: 4,208,039 km (0.09 R)
• M23: 4,327,567 km (0.092 R)
• M24: 4,448,442 km (0.106 R)
• M25: 4,631,700 km (0.063 R)
• M26: 4,817,650 km (0.089 R)
• M27: 5,021,851 km (0.108 R)
• M28: 5,357,848 km (0.07 R)
• M29: 5,471,393 km (0.072 R)
• M30: 5,883,983 km (0.112 R)
• M31: 5,984,513 km (0.058 R)
• M32: 6,085,641 km (0.048 R)
• M33: 6,306,597 km (0.083 R)
• M34: 6,478,485 km (0.09 R)
• M35: 6,686,875 km (0.113 R)
• M36: 6,879,856 km (0.107 R)
• M37: 6,985,921 km (0.114 R)
• M38: 7,181,745 km (0.034 R)
• M39: 7,578,778 km (0.087 R)
• M40: 7,890,689 km (0.064 R)
• M41: 8,432,383 km (0.101 R)
• M42: 8,584,075 km (0.061 R)
• M43: 8,832,258 km (0.119 R)
• M44: 8,986,344 km (0.114 R)
• M45: 9,199,521 km (0.065 R)
• M46: 9,532,376 km (0.048 R)
• M47: 9,650,708 km (0.098 R)
• M48: 9,789,535 km (0.071 R)
• M49: 9,928,960 km (0.088 R)
• M50: 10,250,297 km (0.113 R)
• M51: 10,554,579 km (0.095 R)
• M52: 11,006,364 km (0.086 R)
• M53: 11,130,680 km (0.11 R)
• M54: 11,234,501 km (0.117 R)
• M55: 11,422,545 km (0.099 R)
• M56: 11,653,674 km (0.111 R)
• M57: 12,013,906 km (0.109 R)
• M58: 12,377,877 km (0.077 R)
• M59: 13,292,668 km (0.086 R)
• M60: 13,981,866 km (0.106 R)
• M61: 14,319,508 km (0.113 R)
• M62: 14,591,627 km (0.051 R)
• M63: 14,796,875 km (0.054 R)
• M64: 15,395,117 km (0.11 R)
• M65: 15,650,480 km (0.052 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.2

Radius: 13.6

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.99 AU - 3.03 AU

Year: 2609 Days

Day: 12.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 27,453,495 km

• M1: 175,777 km (0.08 R)
• M2: 326,273 km (0.116 R)
• M3: 448,046 km (0.115 R)
• M4: 535,710 km (0.104 R)
• M5: 631,004 km (0.031 R)
• M6: 764,894 km (0.082 R)
• M7: 869,164 km (0.091 R)
• M8: 971,788 km (0.056 R)
• M9: 1,338,303 km (0.114 R)
• M10: 1,434,793 km (0.11 R)
• M11: 1,567,337 km (0.085 R)
• M12: 1,652,308 km (0.05 R)
• M13: 1,836,314 km (0.099 R)
• M14: 2,167,972 km (0.074 R)
• M15: 2,429,619 km (0.091 R)
• M16: 2,569,493 km (0.113 R)
• M17: 2,691,415 km (0.096 R)
• M18: 2,805,110 km (0.027 R)
• M19: 2,899,356 km (0.065 R)
• M20: 3,048,057 km (0.108 R)
• M21: 3,134,075 km (0.105 R)
• M22: 3,320,026 km (0.034 R)
• M23: 3,464,687 km (0.099 R)
• M24: 3,668,439 km (0.098 R)
• M25: 3,771,811 km (0.093 R)
• M26: 4,352,251 km (0.113 R)
• M27: 4,709,042 km (0.116 R)
• M28: 4,809,272 km (0.09 R)
• M29: 5,037,260 km (0.095 R)
• M30: 5,126,869 km (0.069 R)
• M31: 5,242,957 km (0.057 R)
• M32: 5,530,334 km (0.088 R)
• M33: 5,863,189 km (0.104 R)
• M34: 6,257,679 km (0.097 R)
• M35: 6,409,670 km (0.117 R)
• M36: 6,548,796 km (0.103 R)
• M37: 6,717,244 km (0.113 R)
• M38: 6,801,916 km (0.109 R)
• M39: 6,972,458 km (0.086 R)
• M40: 7,115,772 km (0.051 R)
• M41: 7,624,704 km (0.107 R)
• M42: 8,205,892 km (0.063 R)
• M43: 8,418,022 km (0.059 R)
• M44: 8,540,094 km (0.072 R)
• M45: 8,708,990 km (0.098 R)
• M46: 8,971,983 km (0.113 R)
• M47: 9,221,961 km (0.083 R)
• M48: 9,411,052 km (0.07 R)
• M49: 9,905,324 km (0.065 R)
• M50: 10,196,292 km (0.076 R)
• M51: 10,523,013 km (0.068 R)
• M52: 10,803,210 km (0.094 R)
• M53: 10,936,053 km (0.097 R)
• M54: 11,354,628 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.1

Radius: 12.7

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 2.16 AU - 2.86 AU

Year: 2609 Days

Day: 9.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 27,453,495 km

• M1: 189,092 km (0.118 R)
• M2: 286,031 km (0.108 R)
• M3: 413,638 km (0.087 R)
• M4: 500,554 km (0.106 R)
• M5: 623,973 km (0.105 R)
• M6: 705,504 km (0.109 R)
• M7: 823,536 km (0.118 R)
• M8: 931,696 km (0.094 R)
• M9: 1,081,293 km (0.062 R)
• M10: 1,476,232 km (0.09 R)
• M11: 1,558,660 km (0.105 R)
• M12: 1,653,356 km (0.105 R)
• M13: 1,893,161 km (0.117 R)
• M14: 2,074,922 km (0.12 R)
• M15: 2,468,365 km (0.061 R)
• M16: 2,808,102 km (0.111 R)
• M17: 3,016,491 km (0.101 R)
• M18: 3,189,726 km (0.087 R)
• M19: 3,366,401 km (0.086 R)
• M20: 3,560,130 km (0.096 R)
• M21: 3,644,354 km (0.071 R)
• M22: 3,814,895 km (0.036 R)
• M23: 4,017,301 km (0.101 R)
• M24: 4,238,108 km (0.073 R)
• M25: 4,493,172 km (0.083 R)
• M26: 4,862,080 km (0.109 R)
• M27: 4,955,729 km (0.096 R)
• M28: 5,161,127 km (0.102 R)
• M29: 5,450,000 km (0.077 R)
• M30: 5,810,381 km (0.105 R)
• M31: 6,026,999 km (0.051 R)
• M32: 6,434,055 km (0.113 R)
• M33: 6,606,242 km (0.027 R)
• M34: 7,292,747 km (0.116 R)
• M35: 7,635,475 km (0.104 R)
• M36: 7,763,082 km (0.112 R)
• M37: 8,112,992 km (0.085 R)
• M38: 8,317,941 km (0.088 R)
• M39: 8,505,836 km (0.047 R)
• M40: 8,676,228 km (0.091 R)
• M41: 9,001,005 km (0.111 R)
• M42: 9,446,806 km (0.043 R)
• M43: 9,623,182 km (0.116 R)
• M44: 10,119,099 km (0.112 R)
• M45: 10,339,906 km (0.091 R)
• M46: 10,684,280 km (0.088 R)
• M47: 11,053,188 km (0.058 R)
• M48: 11,259,933 km (0.089 R)
• M49: 11,468,023 km (0.064 R)
• M50: 11,698,254 km (0.075 R)
• M51: 11,782,328 km (0.041 R)
• M52: 11,866,701 km (0.086 R)
• M53: 12,121,018 km (0.09 R)
• M54: 12,248,774 km (0.056 R)
• M55: 12,527,176 km (0.094 R)
• M56: 12,937,972 km (0.044 R)
• M57: 13,928,310 km (0.113 R)
• M58: 14,017,620 km (0.085 R)
• M59: 14,308,887 km (0.067 R)
• M60: 14,443,974 km (0.08 R)
• M61: 14,715,494 km (0.069 R)
• M62: 15,263,770 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.9

Radius: 10

Gravity: 7.61 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.59 AU - 4.21 AU

Year: 4113 Days

Day: 14.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 27,453,495 km

• M1: 125,213 km (0.115 R)
• M2: 245,640 km (0.071 R)
• M3: 825,631 km (0.072 R)
• M4: 924,515 km (0.067 R)
• M5: 1,148,762 km (0.112 R)
• M6: 1,288,935 km (0.102 R)
• M7: 1,776,026 km (0.088 R)
• M8: 1,840,802 km (0.063 R)
• M9: 2,369,929 km (0.103 R)
• M10: 3,080,071 km (0.102 R)
• M11: 3,297,586 km (0.095 R)
• M12: 3,377,920 km (0.108 R)
• M13: 3,768,370 km (0.098 R)
• M14: 3,873,687 km (0.112 R)
• M15: 4,151,790 km (0.11 R)
• M16: 4,348,212 km (0.06 R)
• M17: 4,480,905 km (0.104 R)
• M18: 4,547,775 km (0.101 R)
• M19: 4,818,547 km (0.109 R)
• M20: 5,783,154 km (0.045 R)
• M21: 5,978,380 km (0.03 R)
• M22: 6,150,866 km (0.089 R)
• M23: 6,300,015 km (0.086 R)
• M24: 6,960,490 km (0.109 R)
• M25: 7,064,161 km (0.06 R)
• M26: 7,194,311 km (0.034 R)
• M27: 7,616,327 km (0.097 R)
• M28: 7,723,140 km (0.118 R)
• M29: 7,803,474 km (0.092 R)
• M30: 8,127,952 km (0.1 R)
• M31: 8,291,761 km (0.09 R)
• M32: 8,374,190 km (0.111 R)
• M33: 8,595,146 km (0.044 R)
• M34: 9,269,682 km (0.102 R)
• M35: 9,613,309 km (0.06 R)
• M36: 9,873,759 km (0.101 R)
• M37: 9,961,124 km (0.118 R)
• M38: 10,490,700 km (0.118 R)
• M39: 10,579,861 km (0.047 R)
• M40: 11,089,690 km (0.084 R)
• M41: 11,669,232 km (0.114 R)
• M42: 13,272,921 km (0.114 R)
• M43: 13,433,889 km (0.105 R)
• M44: 13,822,694 km (0.11 R)
• M45: 13,920,531 km (0.069 R)
• M46: 14,084,041 km (0.113 R)
• M47: 14,479,129 km (0.109 R)
• M48: 14,978,188 km (0.109 R)
• M49: 15,381,354 km (0.101 R)
• M50: 15,482,781 km (0.106 R)
• M51: 15,924,693 km (0.093 R)
• M52: 16,267,422 km (0.102 R)
• M53: 16,336,237 km (0.032 R)
• M54: 16,786,078 km (0.065 R)
• M55: 16,995,066 km (0.097 R)
• M56: 17,627,267 km (0.107 R)
• M57: 18,553,876 km (0.068 R)
• M58: 19,059,517 km (0.107 R)
• M59: 19,313,983 km (0.091 R)
• M60: 19,423,339 km (0.11 R)
• M61: 20,901,814 km (0.052 R)
• M62: 21,164,359 km (0.108 R)
• M63: 21,239,457 km (0.12 R)
• M64: 21,465,649 km (0.086 R)
• M65: 21,616,743 km (0.1 R)
• M66: 21,996,273 km (0.108 R)
• M67: 22,110,565 km (0.102 R)
• M68: 22,454,640 km (0.062 R)
• M69: 22,838,957 km (0.117 R)
• M70: 23,887,489 km (0.087 R)
• M71: 23,965,728 km (0.054 R)
• M72: 24,358,572 km (0.038 R)
• M73: 24,516,249 km (0.112 R)
• M74: 25,429,693 km (0.116 R)
• M75: 25,629,706 km (0.073 R)
• M76: 26,313,817 km (0.105 R)
• M77: 26,516,073 km (0.109 R)
• M78: 26,963,071 km (0.082 R)
• M79: 27,248,803 km (0.119 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 457 - 17,607 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit