🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 241

Radius: 8.4

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.42 AU - 0.66 AU

Year: 265 Days

Day: 7 Hours

Environment

Temp: -146 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 29,548,955 km

• M1: 104,868 km (0.088 R)
• M2: 182,809 km (0.078 R)
• M3: 243,545 km (0.111 R)
• M4: 333,454 km (0.073 R)
• M5: 422,315 km (0.095 R)
• M6: 515,963 km (0.095 R)
• M7: 569,220 km (0.091 R)
• M8: 654,341 km (0.057 R)
• M9: 762,500 km (0.115 R)
• M10: 827,276 km (0.109 R)
• M11: 885,470 km (0.081 R)
• M12: 939,475 km (0.058 R)
• M13: 1,027,139 km (0.032 R)
• M14: 1,090,120 km (0.117 R)
• M15: 1,160,879 km (0.09 R)
• M16: 1,229,844 km (0.078 R)
• M17: 1,290,730 km (0.118 R)
• M18: 1,365,829 km (0.114 R)
• M19: 1,428,959 km (0.078 R)
• M20: 1,496,428 km (0.043 R)
• M21: 1,554,771 km (0.061 R)
• M22: 1,641,986 km (0.103 R)
• M23: 1,716,486 km (0.074 R)
• M24: 1,770,491 km (0.112 R)
• M25: 1,832,275 km (0.077 R)
• M26: 1,920,837 km (0.066 R)
• M27: 2,026,154 km (0.083 R)
• M28: 2,083,300 km (0.078 R)
• M29: 2,168,122 km (0.081 R)
• M30: 2,234,543 km (0.101 R)
• M31: 2,369,331 km (0.12 R)
• M32: 2,425,729 km (0.052 R)
• M33: 2,535,534 km (0.04 R)
• M34: 2,684,683 km (0.118 R)
• M35: 2,781,623 km (0.07 R)
• M36: 2,866,744 km (0.12 R)
• M37: 2,944,086 km (0.073 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473.1

Radius: 11.8

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.5 AU - 0.78 AU

Year: 341 Days

Day: 12.4 Hours

Environment

Temp: -154 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 29,548,955 km

• M1: 146,905 km (0.072 R)
• M2: 231,877 km (0.115 R)
• M3: 319,391 km (0.064 R)
• M4: 399,726 km (0.052 R)
• M5: 484,398 km (0.094 R)
• M6: 644,318 km (0.082 R)
• M7: 741,706 km (0.06 R)
• M8: 830,717 km (0.055 R)
• M9: 909,106 km (0.063 R)
• M10: 1,032,076 km (0.103 R)
• M11: 1,133,054 km (0.049 R)
• M12: 1,209,200 km (0.117 R)
• M13: 1,316,312 km (0.115 R)
• M14: 1,474,586 km (0.089 R)
• M15: 1,558,511 km (0.05 R)
• M16: 1,634,955 km (0.102 R)
• M17: 1,731,296 km (0.102 R)
• M18: 1,829,582 km (0.048 R)
• M19: 2,017,178 km (0.104 R)
• M20: 2,131,022 km (0.102 R)
• M21: 2,375,465 km (0.055 R)
• M22: 2,495,891 km (0.085 R)
• M23: 2,607,640 km (0.033 R)
• M24: 2,699,494 km (0.11 R)
• M25: 2,819,920 km (0.067 R)
• M26: 2,975,801 km (0.081 R)
• M27: 3,094,582 km (0.04 R)
• M28: 3,192,119 km (0.096 R)
• M29: 3,331,395 km (0.056 R)
• M30: 3,640,165 km (0.117 R)
• M31: 3,718,853 km (0.097 R)
• M32: 3,884,159 km (0.081 R)
• M33: 4,076,991 km (0.054 R)
• M34: 4,158,671 km (0.077 R)
• M35: 4,298,396 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.1

Radius: 14.7

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.58 AU - 2.2 AU

Year: 1733 Days

Day: 6.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 29,548,955 km

• M1: 186,848 km (0.054 R)
• M2: 281,394 km (0.119 R)
• M3: 414,087 km (0.11 R)
• M4: 518,955 km (0.096 R)
• M5: 658,081 km (0.078 R)
• M6: 878,140 km (0.115 R)
• M7: 1,051,374 km (0.103 R)
• M8: 1,170,903 km (0.11 R)
• M9: 1,266,047 km (0.109 R)
• M10: 1,454,989 km (0.113 R)
• M11: 1,621,641 km (0.032 R)
• M12: 1,997,880 km (0.088 R)
• M13: 2,090,630 km (0.118 R)
• M14: 2,244,417 km (0.115 R)
• M15: 2,690,667 km (0.097 R)
• M16: 2,858,815 km (0.096 R)
• M17: 3,003,925 km (0.102 R)
• M18: 3,097,574 km (0.102 R)
• M19: 3,356,827 km (0.063 R)
• M20: 3,538,438 km (0.11 R)
• M21: 3,651,983 km (0.1 R)
• M22: 3,781,086 km (0.08 R)
• M23: 3,882,514 km (0.082 R)
• M24: 4,014,309 km (0.105 R)
• M25: 4,117,981 km (0.111 R)
• M26: 4,222,549 km (0.086 R)
• M27: 4,419,121 km (0.03 R)
• M28: 4,587,867 km (0.038 R)
• M29: 4,852,805 km (0.117 R)
• M30: 5,027,087 km (0.101 R)
• M31: 5,512,831 km (0.064 R)
• M32: 6,030,889 km (0.103 R)
• M33: 7,239,939 km (0.083 R)
• M34: 7,457,753 km (0.09 R)
• M35: 7,622,610 km (0.103 R)
• M36: 7,788,664 km (0.111 R)
• M37: 8,275,305 km (0.089 R)
• M38: 8,541,440 km (0.101 R)
• M39: 8,694,778 km (0.096 R)
• M40: 9,794,023 km (0.079 R)
• M41: 10,095,911 km (0.049 R)
• M42: 10,217,535 km (0.092 R)
• M43: 10,380,596 km (0.065 R)
• M44: 10,791,691 km (0.084 R)
• M45: 11,040,921 km (0.074 R)
• M46: 11,313,189 km (0.111 R)
• M47: 11,524,122 km (0.119 R)
• M48: 11,715,159 km (0.114 R)
• M49: 11,928,485 km (0.044 R)
• M50: 12,511,319 km (0.066 R)
• M51: 13,503,153 km (0.111 R)
• M52: 13,614,902 km (0.098 R)
• M53: 14,110,370 km (0.047 R)
• M54: 14,566,045 km (0.082 R)
• M55: 14,680,637 km (0.047 R)
• M56: 14,818,716 km (0.102 R)
• M57: 15,003,320 km (0.039 R)
• M58: 15,538,581 km (0.072 R)
• M59: 15,655,866 km (0.106 R)
• M60: 15,749,813 km (0.05 R)
• M61: 15,843,910 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 349.8

Radius: 13.1

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.7 AU - 2.54 AU

Year: 2058 Days

Day: 6.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 29,548,955 km

• M1: 165,156 km (0.109 R)
• M2: 256,860 km (0.069 R)
• M3: 342,430 km (0.081 R)
• M4: 537,056 km (0.061 R)
• M5: 624,721 km (0.086 R)
• M6: 718,219 km (0.073 R)
• M7: 839,244 km (0.11 R)
• M8: 991,535 km (0.099 R)
• M9: 1,112,260 km (0.093 R)
• M10: 1,334,114 km (0.082 R)
• M11: 1,487,452 km (0.1 R)
• M12: 1,637,199 km (0.111 R)
• M13: 1,841,849 km (0.091 R)
• M14: 1,962,724 km (0.071 R)
• M15: 2,065,647 km (0.025 R)
• M16: 2,202,081 km (0.114 R)
• M17: 2,385,338 km (0.111 R)
• M18: 2,473,302 km (0.102 R)
• M19: 2,562,462 km (0.057 R)
• M20: 3,425,941 km (0.099 R)
• M21: 3,513,156 km (0.116 R)
• M22: 3,626,701 km (0.116 R)
• M23: 3,728,577 km (0.086 R)
• M24: 4,026,875 km (0.102 R)
• M25: 4,158,970 km (0.094 R)
• M26: 4,346,566 km (0.11 R)
• M27: 4,897,834 km (0.055 R)
• M28: 5,010,781 km (0.101 R)
• M29: 5,311,472 km (0.094 R)
• M30: 5,500,564 km (0.096 R)
• M31: 5,885,629 km (0.1 R)
• M32: 6,325,447 km (0.074 R)
• M33: 6,448,715 km (0.118 R)
• M34: 6,541,765 km (0.1 R)
• M35: 7,061,169 km (0.092 R)
• M36: 7,157,061 km (0.079 R)
• M37: 7,414,818 km (0.089 R)
• M38: 7,659,411 km (0.104 R)
• M39: 8,006,179 km (0.064 R)
• M40: 8,106,260 km (0.116 R)
• M41: 8,939,071 km (0.119 R)
• M42: 9,304,240 km (0.114 R)
• M43: 9,515,173 km (0.113 R)
• M44: 9,941,975 km (0.062 R)
• M45: 10,157,695 km (0.109 R)
• M46: 10,429,515 km (0.098 R)
• M47: 10,575,373 km (0.108 R)
• M48: 10,850,932 km (0.091 R)
• M49: 11,035,985 km (0.03 R)
• M50: 11,166,135 km (0.049 R)
• M51: 11,427,931 km (0.074 R)
• M52: 11,597,425 km (0.089 R)
• M53: 11,691,822 km (0.096 R)
• M54: 12,014,953 km (0.074 R)
• M55: 12,167,992 km (0.106 R)
• M56: 12,302,480 km (0.086 R)
• M57: 12,534,207 km (0.075 R)
• M58: 13,002,000 km (0.111 R)
• M59: 13,356,696 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.1

Radius: 11.8

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 2.25 AU - 3.59 AU

Year: 3327 Days

Day: 8.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 29,548,955 km

• M1: 276,307 km (0.099 R)
• M2: 369,507 km (0.054 R)
• M3: 505,940 km (0.075 R)
• M4: 585,676 km (0.089 R)
• M5: 678,426 km (0.092 R)
• M6: 751,879 km (0.072 R)
• M7: 943,963 km (0.114 R)
• M8: 1,037,012 km (0.084 R)
• M9: 1,143,077 km (0.074 R)
• M10: 1,232,986 km (0.072 R)
• M11: 1,452,296 km (0.086 R)
• M12: 1,594,564 km (0.109 R)
• M13: 1,776,325 km (0.084 R)
• M14: 1,881,792 km (0.099 R)
• M15: 2,037,822 km (0.088 R)
• M16: 2,198,191 km (0.117 R)
• M17: 2,299,170 km (0.103 R)
• M18: 2,786,111 km (0.077 R)
• M19: 3,105,203 km (0.054 R)
• M20: 3,247,620 km (0.077 R)
• M21: 3,363,259 km (0.096 R)
• M22: 3,643,157 km (0.094 R)
• M23: 3,763,434 km (0.092 R)
• M24: 4,210,432 km (0.082 R)
• M25: 4,528,627 km (0.053 R)
• M26: 4,706,947 km (0.042 R)
• M27: 4,871,206 km (0.116 R)
• M28: 5,004,049 km (0.081 R)
• M29: 5,392,405 km (0.114 R)
• M30: 5,616,353 km (0.109 R)
• M31: 5,825,790 km (0.103 R)
• M32: 6,415,205 km (0.113 R)
• M33: 6,506,161 km (0.036 R)
• M34: 6,597,565 km (0.063 R)
• M35: 6,744,770 km (0.119 R)
• M36: 6,874,471 km (0.084 R)
• M37: 7,042,469 km (0.12 R)
• M38: 7,650,585 km (0.052 R)
• M39: 7,844,164 km (0.075 R)
• M40: 8,715,123 km (0.106 R)
• M41: 9,388,463 km (0.101 R)
• M42: 9,512,629 km (0.117 R)
• M43: 9,783,701 km (0.089 R)
• M44: 10,419,043 km (0.119 R)
• M45: 10,958,642 km (0.058 R)
• M46: 11,199,046 km (0.093 R)
• M47: 11,286,860 km (0.102 R)
• M48: 12,042,629 km (0.036 R)
• M49: 12,358,729 km (0.073 R)
• M50: 12,608,857 km (0.105 R)
• M51: 13,439,574 km (0.054 R)
• M52: 13,556,409 km (0.118 R)
• M53: 13,720,369 km (0.106 R)
• M54: 13,979,472 km (0.082 R)
• M55: 14,169,013 km (0.046 R)
• M56: 14,478,830 km (0.086 R)
• M57: 15,494,749 km (0.11 R)
• M58: 15,568,202 km (0.07 R)
• M59: 15,641,804 km (0.108 R)
• M60: 15,740,090 km (0.119 R)
• M61: 16,085,661 km (0.045 R)
• M62: 16,309,160 km (0.071 R)
• M63: 16,784,432 km (0.049 R)
• M64: 16,859,830 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.5

Radius: 9.5

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 4.05 AU - 5.59 AU

Year: 7057 Days

Day: 5.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 29,548,955 km

• M1: 230,530 km (0.111 R)
• M2: 300,841 km (0.087 R)
• M3: 422,315 km (0.106 R)
• M4: 539,300 km (0.105 R)
• M5: 610,509 km (0.1 R)
• M6: 845,078 km (0.064 R)
• M7: 910,752 km (0.057 R)
• M8: 1,077,853 km (0.116 R)
• M9: 1,266,047 km (0.104 R)
• M10: 1,342,192 km (0.047 R)
• M11: 1,465,012 km (0.106 R)
• M12: 1,627,026 km (0.101 R)
• M13: 2,213,749 km (0.061 R)
• M14: 3,243,880 km (0.1 R)
• M15: 3,364,755 km (0.032 R)
• M16: 3,992,169 km (0.089 R)
• M17: 4,236,911 km (0.082 R)
• M18: 4,843,979 km (0.026 R)
• M19: 5,087,524 km (0.105 R)
• M20: 6,307,794 km (0.06 R)
• M21: 6,708,268 km (0.099 R)
• M22: 7,038,430 km (0.105 R)
• M23: 7,156,313 km (0.056 R)
• M24: 7,354,231 km (0.089 R)
• M25: 7,634,279 km (0.075 R)
• M26: 8,020,091 km (0.064 R)
• M27: 8,349,805 km (0.115 R)
• M28: 8,705,100 km (0.102 R)
• M29: 9,193,687 km (0.113 R)
• M30: 9,387,416 km (0.095 R)
• M31: 9,604,034 km (0.088 R)
• M32: 9,866,428 km (0.097 R)
• M33: 10,064,646 km (0.074 R)
• M34: 10,893,567 km (0.115 R)
• M35: 11,190,070 km (0.07 R)
• M36: 11,466,078 km (0.117 R)
• M37: 11,674,618 km (0.052 R)
• M38: 12,354,989 km (0.068 R)
• M39: 12,497,257 km (0.089 R)
• M40: 12,687,994 km (0.102 R)
• M41: 12,927,650 km (0.069 R)
• M42: 13,168,951 km (0.116 R)
• M43: 13,290,125 km (0.09 R)
• M44: 13,803,096 km (0.056 R)
• M45: 13,975,583 km (0.056 R)
• M46: 14,099,151 km (0.088 R)
• M47: 14,198,334 km (0.036 R)
• M48: 14,547,196 km (0.083 R)
• M49: 15,431,768 km (0.116 R)
• M50: 15,687,730 km (0.119 R)
• M51: 15,816,235 km (0.118 R)
• M52: 15,919,308 km (0.077 R)
• M53: 16,463,994 km (0.11 R)
• M54: 17,465,103 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 89.4

Radius: 6.8

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 7.98 AU - 8.88 AU

Year: 16322 Days

Day: 23.1 Hours

Environment

Temp: -241 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 29,548,955 km

• M1: 118,182 km (0.08 R)
• M2: 530,175 km (0.109 R)
• M3: 734,077 km (0.105 R)
• M4: 873,951 km (0.119 R)
• M5: 1,038,060 km (0.035 R)
• M6: 1,642,285 km (0.107 R)
• M7: 2,096,614 km (0.112 R)
• M8: 2,256,534 km (0.093 R)
• M9: 2,524,763 km (0.052 R)
• M10: 3,046,710 km (0.118 R)
• M11: 3,136,918 km (0.034 R)
• M12: 4,136,830 km (0.088 R)
• M13: 4,880,182 km (0.116 R)
• M14: 4,985,947 km (0.095 R)
• M15: 5,581,347 km (0.062 R)
• M16: 6,867,889 km (0.096 R)
• M17: 7,225,876 km (0.077 R)
• M18: 7,743,485 km (0.081 R)
• M19: 7,960,103 km (0.116 R)
• M20: 8,653,788 km (0.078 R)
• M21: 9,072,812 km (0.072 R)
• M22: 9,630,812 km (0.071 R)
• M23: 9,763,655 km (0.102 R)
• M24: 10,301,309 km (0.071 R)
• M25: 11,091,037 km (0.114 R)
• M26: 11,370,186 km (0.069 R)
• M27: 12,185,794 km (0.103 R)
• M28: 12,329,557 km (0.048 R)
• M29: 12,873,794 km (0.114 R)
• M30: 14,362,892 km (0.035 R)
• M31: 14,935,253 km (0.118 R)
• M32: 15,437,303 km (0.087 R)
• M33: 16,260,092 km (0.106 R)
• M34: 16,776,504 km (0.071 R)
• M35: 17,988,695 km (0.095 R)
• M36: 18,152,505 km (0.07 R)
• M37: 18,234,484 km (0.072 R)
• M38: 18,895,557 km (0.095 R)
• M39: 19,522,223 km (0.102 R)
• M40: 19,648,484 km (0.057 R)
• M41: 20,325,863 km (0.053 R)
• M42: 22,845,390 km (0.101 R)
• M43: 22,889,671 km (0.033 R)
• M44: 23,468,016 km (0.115 R)
• M45: 25,507,335 km (0.055 R)
• M46: 26,199,524 km (0.03 R)
• M47: 26,245,899 km (0.04 R)
• M48: 26,292,424 km (0.043 R)
• M49: 26,524,750 km (0.061 R)
• M50: 27,744,272 km (0.066 R)
• M51: 27,791,544 km (0.092 R)
• M52: 28,838,131 km (0.101 R)
• M53: 29,511,022 km (0.114 R)
• M54: 30,237,470 km (0.073 R)
• M55: 30,871,914 km (0.105 R)
• M56: 30,969,901 km (0.077 R)
• M57: 31,708,166 km (0.082 R)
• M58: 32,203,634 km (0.047 R)
• M59: 32,502,082 km (0.082 R)
• M60: 32,851,543 km (0.062 R)
• M61: 33,453,375 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 59.6

Radius: 3.4

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 7.2 AU - 9.72 AU

Year: 16409 Days

Day: 16.5 Hours

Environment

Temp: -238 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 29,548,955 km

• M1: 195,674 km (0.114 R)
• M2: 287,228 km (0.112 R)
• M3: 520,002 km (0.09 R)
• M4: 1,104,182 km (0.081 R)
• M5: 1,790,836 km (0.096 R)
• M6: 1,860,399 km (0.095 R)
• M7: 3,149,484 km (0.055 R)
• M8: 3,191,371 km (0.116 R)
• M9: 3,598,577 km (0.11 R)
• M10: 4,158,970 km (0.115 R)
• M11: 4,484,495 km (0.092 R)
• M12: 4,626,464 km (0.06 R)
• M13: 7,703,692 km (0.102 R)
• M14: 7,930,782 km (0.065 R)
• M15: 8,045,074 km (0.102 R)
• M16: 8,304,327 km (0.084 R)
• M17: 8,333,200 km (0.093 R)
• M18: 8,713,029 km (0.12 R)
• M19: 9,098,243 km (0.082 R)
• M20: 9,549,730 km (0.102 R)
• M21: 10,070,330 km (0.118 R)
• M22: 10,318,364 km (0.099 R)
• M23: 10,349,480 km (0.094 R)
• M24: 11,816,137 km (0.113 R)
• M25: 12,407,498 km (0.091 R)
• M26: 12,640,122 km (0.104 R)
• M27: 12,706,843 km (0.083 R)
• M28: 12,807,074 km (0.111 R)
• M29: 14,972,952 km (0.099 R)
• M30: 15,576,579 km (0.086 R)
• M31: 15,971,368 km (0.092 R)
• M32: 16,442,152 km (0.099 R)
• M33: 16,880,773 km (0.063 R)
• M34: 21,752,129 km (0.106 R)
• M35: 22,152,901 km (0.103 R)
• M36: 22,193,143 km (0.072 R)
• M37: 22,637,150 km (0.075 R)
• M38: 24,275,994 km (0.073 R)
• M39: 26,207,453 km (0.103 R)
• M40: 28,143,997 km (0.063 R)
• M41: 28,231,213 km (0.084 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: 409 - 17,898 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit