🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.11

Radius: 1.04

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.98 AU - 1.54 AU

Year: 536 Days

Day: 44.9 Hours

Environment

Temp: -23 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.92

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.27 AU - 1.31 AU

Year: 555 Days

Day: 23.4 Hours

Environment

Temp: -31 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 20,210,538 km

• M1: 234,719 km (0.048 R)

Asteroid Belt

Center: 3.97 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 270.3

Radius: 13.6

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.32 AU - 6.96 AU

Year: 6480 Days

Day: 10.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 20,210,538 km

• M1: 169,943 km (0.101 R)
• M2: 266,434 km (0.12 R)
• M3: 370,554 km (0.06 R)
• M4: 563,236 km (0.038 R)
• M5: 851,960 km (0.1 R)
• M6: 1,046,437 km (0.085 R)
• M7: 1,409,362 km (0.08 R)
• M8: 1,719,328 km (0.1 R)
• M9: 1,812,079 km (0.108 R)
• M10: 2,035,129 km (0.091 R)
• M11: 2,150,170 km (0.098 R)
• M12: 2,387,133 km (0.083 R)
• M13: 2,886,940 km (0.06 R)
• M14: 3,073,339 km (0.097 R)
• M15: 3,187,332 km (0.094 R)
• M16: 3,597,230 km (0.118 R)
• M17: 3,717,507 km (0.087 R)
• M18: 4,275,507 km (0.1 R)
• M19: 4,815,855 km (0.052 R)
• M20: 5,038,157 km (0.116 R)
• M21: 5,447,008 km (0.072 R)
• M22: 6,128,277 km (0.094 R)
• M23: 6,540,269 km (0.076 R)
• M24: 6,638,555 km (0.11 R)
• M25: 7,036,635 km (0.081 R)
• M26: 7,314,737 km (0.101 R)
• M27: 7,545,118 km (0.067 R)
• M28: 8,197,664 km (0.109 R)
• M29: 8,303,729 km (0.106 R)
• M30: 8,624,916 km (0.11 R)
• M31: 8,950,141 km (0.045 R)
• M32: 9,086,724 km (0.095 R)
• M33: 9,279,406 km (0.116 R)
• M34: 9,584,736 km (0.048 R)
• M35: 10,868,285 km (0.093 R)
• M36: 11,072,786 km (0.089 R)
• M37: 11,308,103 km (0.087 R)
• M38: 12,265,978 km (0.09 R)
• M39: 12,479,006 km (0.096 R)
• M40: 12,570,709 km (0.092 R)
• M41: 12,723,897 km (0.089 R)
• M42: 13,063,484 km (0.1 R)
• M43: 13,156,534 km (0.095 R)
• M44: 13,249,883 km (0.069 R)
• M45: 13,941,026 km (0.063 R)
• M46: 14,036,170 km (0.107 R)
• M47: 14,643,836 km (0.045 R)
• M48: 14,772,939 km (0.059 R)
• M49: 15,064,655 km (0.06 R)
• M50: 15,391,078 km (0.084 R)
• M51: 15,885,050 km (0.054 R)
• M52: 16,686,296 km (0.102 R)
• M53: 16,888,702 km (0.082 R)
• M54: 17,092,006 km (0.081 R)
• M55: 17,227,840 km (0.032 R)
• M56: 17,672,146 km (0.111 R)
• M57: 18,397,696 km (0.103 R)
• M58: 18,537,121 km (0.112 R)
• M59: 18,676,845 km (0.104 R)
• M60: 19,380,404 km (0.103 R)
• M61: 19,486,768 km (0.037 R)
• M62: 19,878,116 km (0.097 R)
• M63: 20,092,789 km (0.083 R)
• M64: 20,272,307 km (0.091 R)
• M65: 20,777,499 km (0.111 R)
• M66: 21,837,400 km (0.109 R)
• M67: 22,877,254 km (0.094 R)
• M68: 23,139,799 km (0.11 R)
• M69: 23,403,390 km (0.101 R)
• M70: 24,735,858 km (0.106 R)
• M71: 24,889,795 km (0.092 R)
• M72: 25,353,249 km (0.111 R)
• M73: 26,132,205 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.7

Radius: 10.1

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 5.56 AU - 8.22 AU

Year: 6850 Days

Day: 14.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 20,210,538 km

• M1: 151,243 km (0.09 R)
• M2: 224,846 km (0.097 R)
• M3: 325,375 km (0.087 R)
• M4: 426,354 km (0.06 R)
• M5: 715,826 km (0.109 R)
• M6: 837,598 km (0.069 R)
• M7: 1,073,514 km (0.112 R)
• M8: 1,395,449 km (0.099 R)
• M9: 1,759,271 km (0.034 R)
• M10: 2,177,846 km (0.073 R)
• M11: 2,532,094 km (0.086 R)
• M12: 2,820,518 km (0.104 R)
• M13: 2,933,165 km (0.078 R)
• M14: 3,061,820 km (0.037 R)
• M15: 3,177,608 km (0.117 R)
• M16: 4,108,855 km (0.088 R)
• M17: 4,253,217 km (0.118 R)
• M18: 4,813,311 km (0.059 R)
• M19: 6,057,068 km (0.093 R)
• M20: 6,203,225 km (0.064 R)
• M21: 6,667,427 km (0.098 R)
• M22: 6,799,522 km (0.066 R)
• M23: 6,913,366 km (0.069 R)
• M24: 7,027,809 km (0.092 R)
• M25: 7,239,490 km (0.11 R)
• M26: 7,316,832 km (0.085 R)
• M27: 7,688,583 km (0.095 R)
• M28: 7,807,363 km (0.108 R)
• M29: 8,187,192 km (0.06 R)
• M30: 8,655,134 km (0.099 R)
• M31: 8,819,991 km (0.082 R)
• M32: 9,320,695 km (0.098 R)
• M33: 9,426,162 km (0.119 R)
• M34: 9,659,684 km (0.07 R)
• M35: 9,959,628 km (0.117 R)
• M36: 10,110,722 km (0.084 R)
• M37: 10,327,938 km (0.103 R)
• M38: 10,546,799 km (0.069 R)
• M39: 10,877,710 km (0.028 R)
• M40: 11,078,022 km (0.114 R)
• M41: 11,550,152 km (0.109 R)
• M42: 13,076,350 km (0.065 R)
• M43: 13,265,591 km (0.086 R)
• M44: 13,384,372 km (0.07 R)
• M45: 14,738,681 km (0.072 R)
• M46: 15,407,234 km (0.089 R)
• M47: 15,858,272 km (0.104 R)
• M48: 16,263,084 km (0.115 R)
• M49: 16,441,105 km (0.1 R)
• M50: 17,030,970 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.2

Radius: 12.7

Gravity: 6.19 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 6.26 AU - 8.4 AU

Year: 7516 Days

Day: 11.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 20,210,538 km

• M1: 189,989 km (0.108 R)
• M2: 324,328 km (0.1 R)
• M3: 899,831 km (0.104 R)
• M4: 1,151,904 km (0.031 R)
• M5: 1,247,796 km (0.098 R)
• M6: 1,835,865 km (0.106 R)
• M7: 2,088,985 km (0.108 R)
• M8: 2,183,979 km (0.098 R)
• M9: 2,329,239 km (0.073 R)
• M10: 2,732,704 km (0.111 R)
• M11: 2,996,146 km (0.055 R)
• M12: 3,076,929 km (0.06 R)
• M13: 3,379,117 km (0.031 R)
• M14: 3,519,739 km (0.116 R)
• M15: 3,748,923 km (0.083 R)
• M16: 4,840,389 km (0.108 R)
• M17: 5,160,379 km (0.091 R)
• M18: 5,322,991 km (0.084 R)
• M19: 5,454,338 km (0.061 R)
• M20: 5,586,732 km (0.088 R)
• M21: 6,438,393 km (0.075 R)
• M22: 6,755,092 km (0.103 R)
• M23: 7,148,983 km (0.048 R)
• M24: 8,185,547 km (0.063 R)
• M25: 8,682,810 km (0.06 R)
• M26: 8,876,838 km (0.104 R)
• M27: 10,602,899 km (0.11 R)
• M28: 10,810,241 km (0.073 R)
• M29: 11,060,967 km (0.1 R)
• M30: 12,039,487 km (0.119 R)
• M31: 12,212,572 km (0.097 R)
• M32: 12,299,339 km (0.099 R)
• M33: 12,517,303 km (0.101 R)
• M34: 13,626,421 km (0.053 R)
• M35: 13,761,658 km (0.034 R)
• M36: 15,418,753 km (0.106 R)
• M37: 16,606,411 km (0.065 R)
• M38: 16,895,883 km (0.117 R)
• M39: 17,333,008 km (0.097 R)
• M40: 17,479,614 km (0.11 R)
• M41: 17,921,975 km (0.115 R)
• M42: 20,393,780 km (0.119 R)
• M43: 20,548,614 km (0.061 R)
• M44: 20,651,986 km (0.084 R)
• M45: 21,067,419 km (0.047 R)
• M46: 21,171,689 km (0.109 R)
• M47: 21,590,563 km (0.076 R)
• M48: 22,649,716 km (0.107 R)
• M49: 22,917,197 km (0.096 R)
• M50: 23,078,164 km (0.076 R)
• M51: 23,347,291 km (0.066 R)
• M52: 23,509,305 km (0.1 R)
• M53: 23,617,465 km (0.06 R)
• M54: 23,942,990 km (0.101 R)
• M55: 24,708,482 km (0.071 R)
• M56: 26,600,745 km (0.105 R)
• M57: 26,713,542 km (0.119 R)
• M58: 26,996,133 km (0.061 R)
• M59: 28,079,072 km (0.108 R)
• M60: 28,481,639 km (0.076 R)
• M61: 29,002,090 km (0.115 R)
• M62: 29,176,222 km (0.08 R)
• M63: 29,525,683 km (0.065 R)
• M64: 30,169,702 km (0.101 R)
• M65: 31,352,871 km (0.088 R)
• M66: 32,190,021 km (0.097 R)
• M67: 32,973,914 km (0.096 R)
• M68: 33,764,090 km (0.1 R)
• M69: 34,192,239 km (0.11 R)
• M70: 34,499,064 km (0.072 R)
• M71: 35,177,491 km (0.084 R)
• M72: 35,301,358 km (0.117 R)
• M73: 37,238,949 km (0.104 R)
• M74: 37,428,340 km (0.104 R)
• M75: 37,681,310 km (0.058 R)
• M76: 38,125,317 km (0.108 R)
• M77: 38,762,753 km (0.029 R)
• M78: 39,082,743 km (0.089 R)
• M79: 39,983,472 km (0.097 R)
• M80: 40,501,230 km (0.03 R)
• M81: 42,528,580 km (0.113 R)
• M82: 42,990,987 km (0.12 R)
• M83: 43,388,469 km (0.063 R)
• M84: 44,387,932 km (0.107 R)
• M85: 44,521,822 km (0.075 R)
• M86: 44,789,752 km (0.057 R)
• M87: 44,924,091 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.3

Radius: 9.8

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 6.9 AU - 11.36 AU

Year: 10449 Days

Day: 7.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 20,210,538 km

• M1: 176,825 km (0.12 R)
• M2: 706,401 km (0.091 R)
• M3: 1,195,885 km (0.112 R)
• M4: 1,366,726 km (0.093 R)
• M5: 1,485,208 km (0.04 R)
• M6: 2,106,188 km (0.06 R)
• M7: 2,725,374 km (0.089 R)
• M8: 3,055,387 km (0.083 R)
• M9: 3,291,303 km (0.083 R)
• M10: 3,697,910 km (0.12 R)
• M11: 4,006,381 km (0.084 R)
• M12: 4,178,119 km (0.072 R)
• M13: 4,265,035 km (0.113 R)
• M14: 4,919,975 km (0.104 R)
• M15: 5,042,495 km (0.031 R)
• M16: 5,135,097 km (0.062 R)
• M17: 5,702,372 km (0.098 R)
• M18: 6,523,066 km (0.089 R)
• M19: 6,624,044 km (0.117 R)
• M20: 7,033,194 km (0.102 R)
• M21: 7,310,549 km (0.084 R)
• M22: 7,450,572 km (0.086 R)
• M23: 7,768,917 km (0.118 R)
• M24: 8,091,749 km (0.062 R)
• M25: 8,529,023 km (0.096 R)
• M26: 9,086,425 km (0.11 R)
• M27: 9,426,611 km (0.093 R)
• M28: 9,694,092 km (0.065 R)
• M29: 9,809,581 km (0.086 R)
• M30: 9,886,774 km (0.072 R)
• M31: 10,988,562 km (0.102 R)
• M32: 11,229,863 km (0.098 R)
• M33: 11,432,120 km (0.049 R)
• M34: 11,554,042 km (0.116 R)
• M35: 11,676,563 km (0.105 R)
• M36: 11,799,382 km (0.059 R)
• M37: 12,755,462 km (0.108 R)
• M38: 12,966,545 km (0.111 R)
• M39: 13,563,889 km (0.089 R)
• M40: 14,520,717 km (0.062 R)
• M41: 14,785,506 km (0.078 R)
• M42: 14,918,498 km (0.074 R)
• M43: 15,499,237 km (0.098 R)
• M44: 16,453,073 km (0.106 R)
• M45: 16,544,926 km (0.087 R)
• M46: 16,960,359 km (0.051 R)
• M47: 17,754,275 km (0.083 R)
• M48: 18,084,737 km (0.11 R)
• M49: 20,850,502 km (0.052 R)
• M50: 20,999,652 km (0.115 R)
• M51: 21,499,458 km (0.103 R)
• M52: 21,952,740 km (0.113 R)
• M53: 22,510,889 km (0.107 R)
• M54: 22,715,090 km (0.108 R)
• M55: 22,868,578 km (0.079 R)
• M56: 23,537,879 km (0.12 R)
• M57: 23,693,161 km (0.099 R)
• M58: 23,848,893 km (0.09 R)
• M59: 24,318,031 km (0.117 R)
• M60: 25,530,821 km (0.077 R)
• M61: 26,064,287 km (0.084 R)
• M62: 26,224,956 km (0.068 R)
• M63: 28,124,549 km (0.084 R)
• M64: 28,509,764 km (0.088 R)
• M65: 29,843,878 km (0.115 R)
• M66: 30,631,361 km (0.08 R)
• M67: 30,801,005 km (0.118 R)
• M68: 31,141,340 km (0.091 R)
• M69: 33,615,988 km (0.11 R)
• M70: 33,966,346 km (0.049 R)
• M71: 34,552,919 km (0.116 R)
• M72: 34,788,386 km (0.088 R)
• M73: 35,379,597 km (0.107 R)
• M74: 37,112,988 km (0.12 R)
• M75: 37,595,890 km (0.086 R)
• M76: 38,020,299 km (0.119 R)
• M77: 38,263,545 km (0.096 R)
• M78: 40,227,615 km (0.096 R)
• M79: 41,034,995 km (0.115 R)
• M80: 41,097,228 km (0.092 R)
• M81: 41,659,566 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 262.6

Radius: 5.3

Gravity: 9.35 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 11.59 AU - 12.41 AU

Year: 15744 Days

Day: 19.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 88.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 20,210,538 km

• M1: 82,578 km (0.09 R)
• M2: 152,291 km (0.025 R)
• M3: 322,832 km (0.104 R)
• M4: 360,980 km (0.076 R)
• M5: 640,129 km (0.077 R)
• M6: 792,420 km (0.062 R)
• M7: 1,032,525 km (0.091 R)
• M8: 1,091,017 km (0.073 R)
• M9: 1,170,903 km (0.117 R)
• M10: 1,211,593 km (0.096 R)
• M11: 1,357,750 km (0.104 R)
• M12: 1,465,610 km (0.074 R)
• M13: 1,806,245 km (0.072 R)
• M14: 2,195,798 km (0.091 R)
• M15: 2,452,208 km (0.105 R)
• M16: 2,772,497 km (0.085 R)
• M17: 3,077,677 km (0.12 R)
• M18: 3,277,540 km (0.059 R)
• M19: 3,335,285 km (0.085 R)
• M20: 3,452,120 km (0.074 R)
• M21: 3,749,820 km (0.066 R)
• M22: 3,963,296 km (0.112 R)
• M23: 4,306,624 km (0.101 R)
• M24: 4,954,981 km (0.114 R)
• M25: 5,189,101 km (0.109 R)
• M26: 5,290,529 km (0.115 R)
• M27: 5,702,970 km (0.08 R)
• M28: 5,948,311 km (0.095 R)
• M29: 5,983,616 km (0.034 R)
• M30: 7,000,881 km (0.042 R)
• M31: 7,263,575 km (0.066 R)
• M32: 7,721,195 km (0.056 R)
• M33: 7,759,791 km (0.096 R)
• M34: 7,875,879 km (0.109 R)
• M35: 8,109,850 km (0.097 R)
• M36: 8,149,045 km (0.025 R)
• M37: 8,385,559 km (0.091 R)
• M38: 9,231,236 km (0.106 R)
• M39: 9,354,355 km (0.089 R)
• M40: 10,103,840 km (0.069 R)
• M41: 10,230,550 km (0.085 R)
• M42: 11,527,264 km (0.117 R)
• M43: 11,615,527 km (0.083 R)
• M44: 12,194,919 km (0.09 R)
• M45: 12,375,035 km (0.115 R)
• M46: 12,737,959 km (0.079 R)
• M47: 13,196,477 km (0.111 R)
• M48: 13,847,527 km (0.118 R)
• M49: 14,129,668 km (0.099 R)
• M50: 14,987,612 km (0.118 R)
• M51: 16,059,032 km (0.051 R)
• M52: 16,703,649 km (0.116 R)
• M53: 17,054,307 km (0.073 R)
• M54: 17,154,986 km (0.051 R)
• M55: 17,915,841 km (0.084 R)
• M56: 18,120,640 km (0.096 R)
• M57: 18,480,872 km (0.073 R)
• M58: 18,791,587 km (0.072 R)
• M59: 19,681,096 km (0.07 R)
• M60: 19,945,286 km (0.064 R)
• M61: 20,584,218 km (0.067 R)
• M62: 21,773,072 km (0.104 R)
• M63: 22,872,916 km (0.108 R)
• M64: 23,653,518 km (0.075 R)
• M65: 24,670,035 km (0.119 R)
• M66: 25,126,309 km (0.087 R)
• M67: 25,298,197 km (0.111 R)
• M68: 26,163,321 km (0.1 R)
• M69: 27,803,811 km (0.088 R)
• M70: 28,875,979 km (0.049 R)
• M71: 29,417,075 km (0.054 R)
• M72: 29,961,462 km (0.066 R)
• M73: 30,999,072 km (0.054 R)
• M74: 31,121,892 km (0.1 R)
• M75: 34,054,609 km (0.091 R)
• M76: 34,181,318 km (0.054 R)
• M77: 35,136,949 km (0.104 R)
• M78: 35,329,033 km (0.118 R)
• M79: 35,393,211 km (0.119 R)
• M80: 35,585,893 km (0.114 R)
• M81: 36,036,781 km (0.097 R)
• M82: 36,879,017 km (0.083 R)
• M83: 38,319,195 km (0.092 R)
• M84: 39,977,787 km (0.09 R)
• M85: 40,044,657 km (0.116 R)
• M86: 40,849,643 km (0.068 R)
• M87: 42,270,973 km (0.072 R)
• M88: 42,611,906 km (0.1 R)
• M89: 42,885,222 km (0.029 R)
• M90: 43,022,104 km (0.095 R)
• M91: 43,570,978 km (0.068 R)
• M92: 44,122,246 km (0.079 R)
• M93: 44,745,172 km (0.062 R)
• M94: 46,139,873 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 11.2

Radius: 3.7

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 13.79 AU - 15.67 AU

Year: 21412 Days

Day: 22.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 20,210,538 km

• M1: 121,025 km (0.088 R)
• M2: 150,795 km (0.028 R)
• M3: 183,706 km (0.11 R)
• M4: 271,520 km (0.067 R)
• M5: 3,178,805 km (0.083 R)
• M6: 4,401,618 km (0.05 R)
• M7: 4,750,929 km (0.111 R)
• M8: 6,357,610 km (0.058 R)
• M9: 7,563,668 km (0.1 R)
• M10: 7,672,725 km (0.103 R)
• M11: 9,161,074 km (0.087 R)
• M12: 9,487,946 km (0.064 R)
• M13: 10,370,274 km (0.064 R)
• M14: 10,882,497 km (0.042 R)
• M15: 11,906,195 km (0.098 R)
• M16: 12,442,354 km (0.038 R)
• M17: 12,856,142 km (0.091 R)
• M18: 15,019,028 km (0.114 R)
• M19: 17,349,015 km (0.109 R)
• M20: 17,637,140 km (0.113 R)
• M21: 18,658,295 km (0.103 R)
• M22: 18,717,237 km (0.078 R)
• M23: 19,578,771 km (0.075 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: 315 - 15,343 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit