🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.16

Radius: 1.58

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.48 AU - 0.8 AU

Year: 331 Days

Day: 46.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 23.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.4

Radius: 13.8

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.94 AU - 1 AU

Year: 617 Days

Day: 12.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 77,483,873 km

• M1: 173,683 km (0.054 R)
• M2: 259,552 km (0.083 R)
• M3: 376,987 km (0.11 R)
• M4: 469,139 km (0.105 R)
• M5: 625,618 km (0.034 R)
• M6: 719,715 km (0.063 R)
• M7: 892,950 km (0.105 R)
• M8: 979,716 km (0.061 R)
• M9: 1,081,144 km (0.116 R)
• M10: 1,170,753 km (0.109 R)
• M11: 1,263,055 km (0.118 R)
• M12: 1,438,384 km (0.065 R)
• M13: 1,564,495 km (0.111 R)
• M14: 1,671,906 km (0.057 R)
• M15: 1,842,597 km (0.032 R)
• M16: 2,014,335 km (0.059 R)
• M17: 2,102,299 km (0.098 R)
• M18: 2,196,546 km (0.073 R)
• M19: 2,317,869 km (0.085 R)
• M20: 2,436,351 km (0.043 R)
• M21: 2,551,541 km (0.041 R)
• M22: 2,641,898 km (0.1 R)
• M23: 2,782,221 km (0.074 R)
• M24: 2,991,808 km (0.045 R)
• M25: 3,081,716 km (0.077 R)
• M26: 3,206,780 km (0.088 R)
• M27: 3,316,286 km (0.119 R)
• M28: 3,432,972 km (0.104 R)
• M29: 3,562,823 km (0.104 R)
• M30: 3,670,384 km (0.086 R)
• M31: 3,778,992 km (0.118 R)
• M32: 3,987,232 km (0.084 R)
• M33: 4,080,282 km (0.078 R)
• M34: 4,218,062 km (0.108 R)
• M35: 4,313,056 km (0.054 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 310.6

Radius: 11.1

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.51 AU - 1.87 AU

Year: 1419 Days

Day: 12 Hours

Environment

Temp: -178 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 77,483,873 km

• M1: 152,739 km (0.117 R)
• M2: 248,482 km (0.103 R)
• M3: 349,161 km (0.102 R)
• M4: 441,164 km (0.066 R)
• M5: 585,077 km (0.116 R)
• M6: 672,143 km (0.116 R)
• M7: 995,125 km (0.109 R)
• M8: 1,220,569 km (0.113 R)
• M9: 1,299,407 km (0.056 R)
• M10: 1,409,960 km (0.1 R)
• M11: 1,500,915 km (0.113 R)
• M12: 1,664,725 km (0.055 R)
• M13: 1,744,910 km (0.078 R)
• M14: 1,826,590 km (0.116 R)
• M15: 1,926,222 km (0.103 R)
• M16: 2,010,595 km (0.095 R)
• M17: 2,227,363 km (0.109 R)
• M18: 2,307,398 km (0.108 R)
• M19: 2,433,658 km (0.052 R)
• M20: 2,534,637 km (0.039 R)
• M21: 2,759,782 km (0.092 R)
• M22: 2,884,546 km (0.108 R)
• M23: 3,119,864 km (0.038 R)
• M24: 3,270,209 km (0.118 R)
• M25: 3,341,268 km (0.097 R)
• M26: 3,464,238 km (0.095 R)
• M27: 3,578,231 km (0.103 R)
• M28: 3,788,865 km (0.087 R)
• M29: 3,917,220 km (0.113 R)
• M30: 4,036,151 km (0.11 R)
• M31: 4,145,207 km (0.107 R)
• M32: 4,222,250 km (0.034 R)
• M33: 4,467,591 km (0.114 R)
• M34: 4,728,938 km (0.109 R)
• M35: 4,798,053 km (0.037 R)
• M36: 4,972,035 km (0.088 R)
• M37: 5,302,646 km (0.057 R)
• M38: 5,434,591 km (0.037 R)
• M39: 5,603,936 km (0.106 R)
• M40: 5,689,357 km (0.098 R)
• M41: 5,935,744 km (0.092 R)
• M42: 6,173,007 km (0.094 R)
• M43: 6,299,118 km (0.082 R)
• M44: 6,400,694 km (0.08 R)
• M45: 6,477,289 km (0.078 R)
• M46: 6,669,821 km (0.074 R)
• M47: 6,903,643 km (0.096 R)
• M48: 6,982,181 km (0.119 R)
• M49: 7,153,321 km (0.089 R)
• M50: 7,648,042 km (0.084 R)
• M51: 8,264,834 km (0.115 R)
• M52: 8,348,160 km (0.076 R)
• M53: 8,516,008 km (0.107 R)
• M54: 8,826,424 km (0.119 R)
• M55: 8,925,907 km (0.082 R)
• M56: 9,212,536 km (0.043 R)
• M57: 9,691,997 km (0.102 R)
• M58: 9,927,315 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 965.1

Radius: 10.3

Gravity: 9.1 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 3.71 AU - 5.13 AU

Year: 6000 Days

Day: 14.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 77,483,873 km

• M1: 184,604 km (0.054 R)
• M2: 287,826 km (0.102 R)
• M3: 467,793 km (0.07 R)
• M4: 579,841 km (0.031 R)
• M5: 744,997 km (0.064 R)
• M6: 833,709 km (0.086 R)
• M7: 1,022,651 km (0.115 R)
• M8: 1,279,062 km (0.094 R)
• M9: 1,633,310 km (0.12 R)
• M10: 2,475,546 km (0.116 R)
• M11: 2,869,437 km (0.075 R)
• M12: 3,208,874 km (0.08 R)
• M13: 3,535,746 km (0.057 R)
• M14: 3,899,717 km (0.066 R)
• M15: 4,275,806 km (0.1 R)
• M16: 5,062,841 km (0.028 R)
• M17: 5,149,757 km (0.117 R)
• M18: 6,419,544 km (0.111 R)
• M19: 6,767,508 km (0.116 R)
• M20: 7,056,980 km (0.075 R)
• M21: 7,317,580 km (0.096 R)
• M22: 8,911,994 km (0.032 R)
• M23: 9,264,596 km (0.114 R)
• M24: 10,498,031 km (0.079 R)
• M25: 10,758,331 km (0.067 R)
• M26: 10,983,176 km (0.103 R)
• M27: 11,058,424 km (0.056 R)
• M28: 11,782,328 km (0.069 R)
• M29: 12,052,951 km (0.119 R)
• M30: 12,208,533 km (0.082 R)
• M31: 12,443,102 km (0.12 R)
• M32: 13,759,713 km (0.04 R)
• M33: 13,922,326 km (0.082 R)
• M34: 14,085,537 km (0.078 R)
• M35: 14,413,904 km (0.079 R)
• M36: 14,620,499 km (0.073 R)
• M37: 15,456,452 km (0.086 R)
• M38: 16,222,094 km (0.108 R)
• M39: 16,696,020 km (0.09 R)
• M40: 17,305,930 km (0.046 R)
• M41: 17,701,766 km (0.114 R)
• M42: 18,457,834 km (0.103 R)
• M43: 18,997,733 km (0.057 R)
• M44: 19,955,159 km (0.103 R)
• M45: 21,068,467 km (0.079 R)
• M46: 21,256,062 km (0.119 R)
• M47: 22,345,135 km (0.084 R)
• M48: 22,680,084 km (0.082 R)
• M49: 23,792,644 km (0.091 R)
• M50: 24,281,978 km (0.06 R)
• M51: 24,972,522 km (0.101 R)
• M52: 25,619,533 km (0.119 R)
• M53: 25,920,075 km (0.064 R)
• M54: 26,575,015 km (0.107 R)
• M55: 27,133,613 km (0.12 R)
• M56: 27,491,152 km (0.115 R)
• M57: 27,850,187 km (0.101 R)
• M58: 28,313,940 km (0.069 R)
• M59: 29,931,392 km (0.075 R)
• M60: 30,089,517 km (0.1 R)
• M61: 30,884,181 km (0.031 R)
• M62: 31,364,241 km (0.057 R)
• M63: 31,578,465 km (0.079 R)
• M64: 32,169,975 km (0.112 R)
• M65: 32,982,591 km (0.065 R)
• M66: 33,254,859 km (0.077 R)
• M67: 33,582,777 km (0.1 R)
• M68: 33,856,691 km (0.094 R)
• M69: 34,021,398 km (0.079 R)
• M70: 35,293,429 km (0.088 R)
• M71: 36,187,426 km (0.117 R)
• M72: 36,412,122 km (0.054 R)
• M73: 36,580,868 km (0.102 R)
• M74: 36,749,914 km (0.072 R)
• M75: 36,919,259 km (0.048 R)
• M76: 37,372,091 km (0.108 R)
• M77: 38,111,853 km (0.059 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 267.3

Radius: 5.9

Gravity: 7.68 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 5.74 AU - 6.84 AU

Year: 10186 Days

Day: 19.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 77,483,873 km

• M1: 94,097 km (0.12 R)
• M2: 181,013 km (0.109 R)
• M3: 295,157 km (0.097 R)
• M4: 492,925 km (0.092 R)
• M5: 567,724 km (0.112 R)
• M6: 687,103 km (0.088 R)
• M7: 981,362 km (0.111 R)
• M8: 1,260,212 km (0.087 R)
• M9: 1,544,299 km (0.088 R)
• M10: 1,674,898 km (0.111 R)
• M11: 1,828,535 km (0.099 R)
• M12: 2,149,721 km (0.089 R)
• M13: 2,316,822 km (0.078 R)
• M14: 3,050,450 km (0.03 R)
• M15: 4,078,786 km (0.113 R)
• M16: 4,710,687 km (0.104 R)
• M17: 6,151,464 km (0.116 R)
• M18: 6,299,566 km (0.065 R)
• M19: 6,478,934 km (0.099 R)
• M20: 6,659,948 km (0.069 R)
• M21: 7,057,728 km (0.112 R)
• M22: 8,005,132 km (0.116 R)
• M23: 8,134,534 km (0.101 R)
• M24: 9,499,465 km (0.083 R)
• M25: 10,051,182 km (0.066 R)
• M26: 10,155,751 km (0.117 R)
• M27: 10,648,676 km (0.112 R)
• M28: 11,005,467 km (0.064 R)
• M29: 11,621,211 km (0.119 R)
• M30: 12,062,376 km (0.041 R)
• M31: 12,999,307 km (0.118 R)
• M32: 13,075,303 km (0.098 R)
• M33: 13,380,632 km (0.087 R)
• M34: 13,804,293 km (0.085 R)
• M35: 14,783,411 km (0.118 R)
• M36: 15,101,456 km (0.114 R)
• M37: 15,582,713 km (0.095 R)
• M38: 15,623,104 km (0.105 R)
• M39: 17,181,465 km (0.1 R)
• M40: 17,264,791 km (0.077 R)
• M41: 17,473,929 km (0.072 R)
• M42: 17,641,778 km (0.036 R)
• M43: 17,936,785 km (0.113 R)
• M44: 18,660,090 km (0.117 R)
• M45: 18,745,810 km (0.086 R)
• M46: 19,610,186 km (0.096 R)
• M47: 20,886,406 km (0.088 R)
• M48: 23,379,754 km (0.083 R)
• M49: 25,251,223 km (0.054 R)
• M50: 25,488,485 km (0.054 R)
• M51: 25,536,057 km (0.114 R)
• M52: 26,013,125 km (0.098 R)
• M53: 26,156,888 km (0.078 R)
• M54: 29,135,681 km (0.105 R)
• M55: 29,334,796 km (0.096 R)
• M56: 29,884,419 km (0.119 R)
• M57: 30,538,610 km (0.064 R)
• M58: 30,589,025 km (0.057 R)
• M59: 31,146,426 km (0.069 R)
• M60: 31,350,029 km (0.065 R)
• M61: 31,656,106 km (0.062 R)
• M62: 32,117,167 km (0.105 R)
• M63: 32,322,864 km (0.083 R)
• M64: 33,513,663 km (0.118 R)
• M65: 34,193,137 km (0.117 R)
• M66: 34,298,005 km (0.036 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 491.3

Radius: 5.3

Gravity: 17.49 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 5.99 AU - 7.11 AU

Year: 10824 Days

Day: 20.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 77,483,873 km

• M1: 223,499 km (0.072 R)
• M2: 440,865 km (0.09 R)
• M3: 586,124 km (0.066 R)
• M4: 814,411 km (0.094 R)
• M5: 920,326 km (0.1 R)
• M6: 1,224,907 km (0.059 R)
• M7: 1,285,345 km (0.112 R)
• M8: 1,367,624 km (0.116 R)
• M9: 1,409,362 km (0.076 R)
• M10: 1,736,233 km (0.085 R)
• M11: 1,966,913 km (0.043 R)
• M12: 2,158,548 km (0.082 R)
• M13: 2,207,317 km (0.051 R)
• M14: 2,256,534 km (0.089 R)
• M15: 2,406,431 km (0.05 R)
• M16: 2,457,145 km (0.099 R)
• M17: 3,259,588 km (0.099 R)
• M18: 3,601,718 km (0.081 R)
• M19: 4,105,564 km (0.109 R)
• M20: 4,381,273 km (0.064 R)
• M21: 4,443,356 km (0.053 R)
• M22: 4,918,479 km (0.037 R)
• M23: 5,711,497 km (0.093 R)
• M24: 5,745,456 km (0.1 R)
• M25: 5,779,415 km (0.116 R)
• M26: 6,088,185 km (0.087 R)
• M27: 6,297,023 km (0.081 R)
• M28: 6,614,769 km (0.055 R)
• M29: 6,829,442 km (0.033 R)
• M30: 7,823,819 km (0.098 R)
• M31: 9,984,611 km (0.027 R)
• M32: 10,272,138 km (0.087 R)
• M33: 10,396,154 km (0.113 R)
• M34: 10,562,358 km (0.104 R)
• M35: 10,729,458 km (0.111 R)
• M36: 10,855,270 km (0.082 R)
• M37: 11,534,744 km (0.086 R)
• M38: 12,491,422 km (0.099 R)
• M39: 12,801,090 km (0.055 R)
• M40: 13,203,059 km (0.105 R)
• M41: 13,518,561 km (0.025 R)
• M42: 13,609,068 km (0.085 R)
• M43: 14,758,428 km (0.11 R)
• M44: 15,226,819 km (0.09 R)
• M45: 15,795,291 km (0.109 R)
• M46: 16,226,283 km (0.074 R)
• M47: 16,322,474 km (0.034 R)
• M48: 16,855,491 km (0.095 R)
• M49: 17,591,513 km (0.034 R)
• M50: 19,400,151 km (0.081 R)
• M51: 19,604,651 km (0.082 R)
• M52: 20,222,790 km (0.079 R)
• M53: 20,899,571 km (0.116 R)
• M54: 21,636,639 km (0.066 R)
• M55: 22,275,273 km (0.108 R)
• M56: 22,596,908 km (0.109 R)
• M57: 22,866,035 km (0.12 R)
• M58: 24,172,922 km (0.106 R)
• M59: 24,337,928 km (0.118 R)
• M60: 25,503,744 km (0.047 R)
• M61: 25,671,743 km (0.081 R)
• M62: 25,896,439 km (0.116 R)
• M63: 27,200,483 km (0.052 R)
• M64: 28,062,466 km (0.06 R)
• M65: 29,872,152 km (0.091 R)
• M66: 30,226,699 km (0.113 R)
• M67: 30,820,901 km (0.097 R)
• M68: 31,960,239 km (0.049 R)
• M69: 32,262,426 km (0.117 R)
• M70: 32,686,985 km (0.071 R)
• M71: 32,991,267 km (0.106 R)
• M72: 33,113,339 km (0.098 R)
• M73: 34,775,222 km (0.119 R)
• M74: 34,961,621 km (0.082 R)
• M75: 35,085,937 km (0.104 R)
• M76: 35,397,699 km (0.069 R)
• M77: 35,647,677 km (0.111 R)
• M78: 35,710,209 km (0.111 R)
• M79: 36,716,703 km (0.105 R)
• M80: 37,096,382 km (0.112 R)
• M81: 37,541,137 km (0.113 R)
• M82: 38,243,648 km (0.102 R)
• M83: 38,564,386 km (0.064 R)
• M84: 38,628,564 km (0.089 R)
• M85: 38,886,022 km (0.074 R)
• M86: 39,079,452 km (0.092 R)
• M87: 40,638,112 km (0.099 R)
• M88: 41,096,480 km (0.047 R)
• M89: 41,293,500 km (0.075 R)
• M90: 41,622,616 km (0.116 R)
• M91: 42,216,968 km (0.097 R)
• M92: 43,815,870 km (0.062 R)
• M93: 44,825,207 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 789.4

Radius: 7.8

Gravity: 12.98 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 7.21 AU - 11.95 AU

Year: 19145 Days

Day: 17.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 77,483,873 km

• M1: 99,483 km (0.045 R)
• M2: 152,440 km (0.102 R)
• M3: 211,681 km (0.085 R)
• M4: 560,842 km (0.033 R)
• M5: 1,014,573 km (0.107 R)
• M6: 1,122,582 km (0.11 R)
• M7: 1,654,852 km (0.106 R)
• M8: 1,782,758 km (0.111 R)
• M9: 2,221,379 km (0.086 R)
• M10: 2,398,802 km (0.072 R)
• M11: 2,920,300 km (0.088 R)
• M12: 3,599,474 km (0.069 R)
• M13: 3,682,501 km (0.099 R)
• M14: 3,935,621 km (0.113 R)
• M15: 4,281,790 km (0.066 R)
• M16: 5,189,700 km (0.12 R)
• M17: 5,330,920 km (0.092 R)
• M18: 5,473,487 km (0.09 R)
• M19: 5,569,230 km (0.085 R)
• M20: 6,455,597 km (0.114 R)
• M21: 6,556,725 km (0.071 R)
• M22: 8,800,693 km (0.077 R)
• M23: 9,481,663 km (0.098 R)
• M24: 10,003,460 km (0.111 R)
• M25: 10,238,329 km (0.105 R)
• M26: 10,297,420 km (0.073 R)
• M27: 10,833,728 km (0.109 R)
• M28: 10,893,867 km (0.107 R)
• M29: 11,933,273 km (0.104 R)
• M30: 13,454,085 km (0.089 R)
• M31: 13,648,412 km (0.045 R)
• M32: 13,974,386 km (0.105 R)
• M33: 14,501,419 km (0.108 R)
• M34: 15,169,224 km (0.088 R)
• M35: 15,642,701 km (0.102 R)
• M36: 16,673,431 km (0.036 R)
• M37: 19,162,889 km (0.092 R)
• M38: 19,454,605 km (0.104 R)
• M39: 21,614,050 km (0.105 R)
• M40: 22,452,696 km (0.094 R)
• M41: 22,529,589 km (0.091 R)
• M42: 22,760,418 km (0.035 R)
• M43: 24,240,689 km (0.101 R)
• M44: 24,714,615 km (0.115 R)
• M45: 25,993,378 km (0.047 R)
• M46: 28,614,482 km (0.118 R)
• M47: 28,864,610 km (0.069 R)
• M48: 29,115,336 km (0.12 R)
• M49: 29,787,479 km (0.037 R)
• M50: 30,125,570 km (0.096 R)
• M51: 30,379,887 km (0.04 R)
• M52: 31,490,352 km (0.1 R)
• M53: 31,921,044 km (0.12 R)
• M54: 32,875,329 km (0.103 R)
• M55: 33,926,852 km (0.041 R)
• M56: 34,015,115 km (0.107 R)
• M57: 34,989,596 km (0.097 R)
• M58: 36,063,110 km (0.119 R)
• M59: 37,967,790 km (0.087 R)
• M60: 38,334,305 km (0.055 R)
• M61: 39,812,033 km (0.094 R)
• M62: 41,026,318 km (0.08 R)
• M63: 41,496,505 km (0.045 R)
• M64: 42,157,877 km (0.101 R)
• M65: 45,128,442 km (0.11 R)
• M66: 45,516,648 km (0.1 R)
• M67: 47,277,265 km (0.093 R)
• M68: 47,869,075 km (0.101 R)
• M69: 48,761,426 km (0.075 R)
• M70: 50,059,935 km (0.104 R)
• M71: 51,978,229 km (0.106 R)
• M72: 55,055,756 km (0.114 R)
• M73: 57,035,235 km (0.09 R)
• M74: 58,825,922 km (0.075 R)
• M75: 59,143,817 km (0.061 R)
• M76: 60,742,121 km (0.113 R)
• M77: 61,170,719 km (0.101 R)
• M78: 62,786,825 km (0.036 R)
• M79: 63,545,735 km (0.086 R)
• M80: 65,291,991 km (0.075 R)
• M81: 66,391,385 km (0.074 R)
• M82: 66,722,446 km (0.086 R)
• M83: 67,496,914 km (0.104 R)
• M84: 70,062,667 km (0.089 R)
• M85: 70,399,561 km (0.101 R)
• M86: 72,546,440 km (0.065 R)
• M87: 72,773,679 km (0.103 R)
• M88: 73,115,062 km (0.061 R)
• M89: 73,342,750 km (0.102 R)
• M90: 73,685,030 km (0.06 R)
• M91: 74,714,712 km (0.095 R)
• M92: 75,059,086 km (0.119 R)
• M93: 76,210,541 km (0.044 R)
• M94: 76,557,159 km (0.104 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 285 - 18,453 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit