🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.9

Radius: 14.1

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.54 AU - 0.9 AU

Year: 429 Days

Day: 6.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 37,512,853 km

• M1: 175,478 km (0.104 R)
• M2: 270,922 km (0.105 R)
• M3: 383,868 km (0.07 R)
• M4: 471,832 km (0.096 R)
• M5: 606,470 km (0.035 R)
• M6: 699,669 km (0.099 R)
• M7: 820,245 km (0.11 R)
• M8: 962,662 km (0.068 R)
• M9: 1,089,970 km (0.108 R)
• M10: 1,178,233 km (0.036 R)
• M11: 1,410,558 km (0.08 R)
• M12: 1,681,181 km (0.058 R)
• M13: 1,808,489 km (0.11 R)
• M14: 2,147,328 km (0.096 R)
• M15: 2,248,007 km (0.114 R)
• M16: 2,460,885 km (0.103 R)
• M17: 2,553,336 km (0.118 R)
• M18: 2,667,180 km (0.108 R)
• M19: 2,858,367 km (0.092 R)
• M20: 3,104,006 km (0.111 R)
• M21: 3,349,347 km (0.102 R)
• M22: 3,437,609 km (0.083 R)
• M23: 3,616,229 km (0.087 R)
• M24: 3,874,884 km (0.113 R)
• M25: 4,037,647 km (0.058 R)
• M26: 4,131,744 km (0.029 R)
• M27: 4,266,232 km (0.116 R)
• M28: 4,354,196 km (0.105 R)
• M29: 4,580,537 km (0.119 R)
• M30: 5,053,715 km (0.12 R)
• M31: 5,172,346 km (0.113 R)
• M32: 5,274,671 km (0.081 R)
• M33: 5,386,421 km (0.08 R)
• M34: 5,612,463 km (0.036 R)
• M35: 5,735,433 km (0.105 R)
• M36: 5,832,671 km (0.119 R)
• M37: 5,948,311 km (0.106 R)
• M38: 6,037,770 km (0.117 R)
• M39: 6,163,881 km (0.09 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.1

Radius: 12.4

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.68 AU - 0.86 AU

Year: 475 Days

Day: 14.7 Hours

Environment

Temp: -169 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 37,512,853 km

• M1: 166,652 km (0.074 R)
• M2: 245,490 km (0.094 R)
• M3: 335,249 km (0.056 R)
• M4: 427,700 km (0.083 R)
• M5: 518,506 km (0.108 R)
• M6: 692,937 km (0.113 R)
• M7: 772,224 km (0.065 R)
• M8: 884,572 km (0.108 R)
• M9: 998,715 km (0.09 R)
• M10: 1,085,482 km (0.118 R)
• M11: 1,170,155 km (0.065 R)
• M12: 1,282,054 km (0.081 R)
• M13: 1,407,866 km (0.113 R)
• M14: 1,564,794 km (0.12 R)
• M15: 1,650,813 km (0.105 R)
• M16: 1,733,091 km (0.075 R)
• M17: 1,884,933 km (0.118 R)
• M18: 2,017,776 km (0.051 R)
• M19: 2,141,942 km (0.054 R)
• M20: 2,244,267 km (0.115 R)
• M21: 2,410,470 km (0.1 R)
• M22: 2,600,011 km (0.076 R)
• M23: 2,703,234 km (0.1 R)
• M24: 2,788,056 km (0.034 R)
• M25: 2,867,193 km (0.077 R)
• M26: 2,987,320 km (0.051 R)
• M27: 3,198,402 km (0.049 R)
• M28: 3,281,429 km (0.083 R)
• M29: 3,442,546 km (0.119 R)
• M30: 3,628,048 km (0.082 R)
• M31: 3,743,836 km (0.058 R)
• M32: 3,868,152 km (0.104 R)
• M33: 3,949,384 km (0.049 R)
• M34: 4,151,341 km (0.082 R)
• M35: 4,333,701 km (0.055 R)
• M36: 4,604,473 km (0.077 R)
• M37: 4,706,499 km (0.092 R)
• M38: 4,833,058 km (0.108 R)
• M39: 4,968,893 km (0.11 R)
• M40: 5,049,227 km (0.104 R)
• M41: 5,187,157 km (0.047 R)
• M42: 5,293,371 km (0.104 R)
• M43: 5,392,106 km (0.064 R)
• M44: 5,549,632 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.3

Radius: 13.1

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.96 AU - 1.5 AU

Year: 959 Days

Day: 10.1 Hours

Environment

Temp: -175 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 37,512,853 km

• M1: 165,156 km (0.095 R)
• M2: 258,804 km (0.112 R)
• M3: 360,082 km (0.091 R)
• M4: 475,871 km (0.101 R)
• M5: 568,771 km (0.107 R)
• M6: 669,450 km (0.066 R)
• M7: 795,262 km (0.12 R)
• M8: 1,377,348 km (0.082 R)
• M9: 1,467,854 km (0.119 R)
• M10: 1,607,579 km (0.093 R)
• M11: 1,715,439 km (0.034 R)
• M12: 1,838,259 km (0.096 R)
• M13: 1,989,801 km (0.089 R)
• M14: 2,152,115 km (0.065 R)
• M15: 2,359,757 km (0.072 R)
• M16: 2,497,387 km (0.11 R)
• M17: 2,630,529 km (0.097 R)
• M18: 2,824,109 km (0.118 R)
• M19: 3,000,185 km (0.111 R)
• M20: 3,271,257 km (0.087 R)
• M21: 3,386,597 km (0.108 R)
• M22: 3,487,725 km (0.103 R)
• M23: 3,629,394 km (0.087 R)
• M24: 3,765,079 km (0.046 R)
• M25: 3,983,941 km (0.054 R)
• M26: 4,099,131 km (0.117 R)
• M27: 4,240,501 km (0.076 R)
• M28: 4,332,953 km (0.12 R)
• M29: 4,511,273 km (0.048 R)
• M30: 4,596,993 km (0.067 R)
• M31: 4,709,341 km (0.109 R)
• M32: 4,919,077 km (0.08 R)
• M33: 5,051,920 km (0.063 R)
• M34: 5,176,834 km (0.036 R)
• M35: 5,375,351 km (0.033 R)
• M36: 5,512,083 km (0.082 R)
• M37: 5,826,538 km (0.057 R)
• M38: 5,939,035 km (0.086 R)
• M39: 6,042,707 km (0.032 R)
• M40: 6,184,974 km (0.04 R)
• M41: 6,290,142 km (0.07 R)
• M42: 6,395,907 km (0.106 R)
• M43: 6,677,451 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.1

Radius: 8.2

Gravity: 12.49 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.31 AU - 1.85 AU

Year: 1396 Days

Day: 12.4 Hours

Environment

Temp: -197 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 37,512,853 km

• M1: 117,734 km (0.077 R)
• M2: 207,492 km (0.12 R)
• M3: 264,489 km (0.098 R)
• M4: 350,358 km (0.087 R)
• M5: 478,264 km (0.109 R)
• M6: 759,209 km (0.081 R)
• M7: 850,913 km (0.107 R)
• M8: 1,020,557 km (0.072 R)
• M9: 1,246,001 km (0.099 R)
• M10: 1,336,956 km (0.112 R)
• M11: 1,420,881 km (0.11 R)
• M12: 1,633,459 km (0.087 R)
• M13: 1,693,298 km (0.073 R)
• M14: 1,939,985 km (0.075 R)
• M15: 2,100,055 km (0.087 R)
• M16: 2,209,261 km (0.117 R)
• M17: 2,264,463 km (0.093 R)
• M18: 2,331,483 km (0.049 R)
• M19: 2,676,456 km (0.087 R)
• M20: 2,759,333 km (0.095 R)
• M21: 3,025,467 km (0.078 R)
• M22: 3,363,259 km (0.082 R)
• M23: 3,452,868 km (0.112 R)
• M24: 3,805,770 km (0.102 R)
• M25: 3,912,732 km (0.11 R)
• M26: 4,170,489 km (0.107 R)
• M27: 4,239,155 km (0.092 R)
• M28: 4,391,894 km (0.117 R)
• M29: 4,447,844 km (0.057 R)
• M30: 4,716,821 km (0.098 R)
• M31: 4,802,840 km (0.116 R)
• M32: 5,108,318 km (0.071 R)
• M33: 5,330,322 km (0.097 R)
• M34: 5,435,040 km (0.072 R)
• M35: 5,495,179 km (0.094 R)
• M36: 5,722,717 km (0.089 R)
• M37: 5,953,397 km (0.083 R)
• M38: 6,202,926 km (0.111 R)
• M39: 6,313,030 km (0.051 R)
• M40: 6,376,310 km (0.077 R)
• M41: 6,551,489 km (0.095 R)
• M42: 6,744,321 km (0.043 R)
• M43: 6,971,560 km (0.053 R)
• M44: 7,651,931 km (0.089 R)
• M45: 7,719,400 km (0.072 R)
• M46: 8,180,311 km (0.073 R)
• M47: 8,897,184 km (0.101 R)
• M48: 9,308,279 km (0.085 R)
• M49: 9,416,438 km (0.11 R)
• M50: 9,725,358 km (0.093 R)
• M51: 9,927,165 km (0.089 R)
• M52: 9,982,367 km (0.099 R)
• M53: 10,074,669 km (0.059 R)
• M54: 10,353,369 km (0.089 R)
• M55: 10,409,319 km (0.114 R)
• M56: 10,596,915 km (0.064 R)
• M57: 10,653,313 km (0.099 R)
• M58: 10,994,247 km (0.105 R)
• M59: 11,089,690 km (0.12 R)
• M60: 11,146,986 km (0.089 R)
• M61: 11,396,665 km (0.114 R)
• M62: 11,667,587 km (0.11 R)
• M63: 11,745,378 km (0.084 R)
• M64: 11,960,200 km (0.109 R)
• M65: 12,117,278 km (0.089 R)
• M66: 12,433,378 km (0.096 R)
• M67: 12,632,493 km (0.104 R)
• M68: 13,459,320 km (0.087 R)
• M69: 13,520,506 km (0.102 R)
• M70: 13,581,841 km (0.07 R)
• M71: 13,663,671 km (0.078 R)

Asteroid Belt

Center: 2.58 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 984.6

Radius: 14.4

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 3.19 AU - 3.95 AU

Year: 4741 Days

Day: 8.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 37,512,853 km

• M1: 227,538 km (0.114 R)
• M2: 393,293 km (0.086 R)
• M3: 647,908 km (0.102 R)
• M4: 772,075 km (0.06 R)
• M5: 933,192 km (0.094 R)
• M6: 1,308,084 km (0.089 R)
• M7: 1,438,234 km (0.052 R)
• M8: 1,911,113 km (0.1 R)
• M9: 2,079,560 km (0.085 R)
• M10: 2,175,303 km (0.111 R)
• M11: 2,411,667 km (0.097 R)
• M12: 3,061,221 km (0.115 R)
• M13: 4,366,762 km (0.109 R)
• M14: 4,896,787 km (0.076 R)
• M15: 5,026,040 km (0.076 R)
• M16: 5,420,679 km (0.097 R)
• M17: 5,635,352 km (0.066 R)
• M18: 5,907,620 km (0.101 R)
• M19: 6,045,400 km (0.083 R)
• M20: 6,296,275 km (0.109 R)
• M21: 6,721,881 km (0.049 R)
• M22: 6,923,838 km (0.057 R)
• M23: 7,127,740 km (0.12 R)
• M24: 7,274,645 km (0.101 R)
• M25: 8,115,984 km (0.103 R)
• M26: 8,362,072 km (0.033 R)
• M27: 8,861,729 km (0.098 R)
• M28: 9,988,500 km (0.107 R)
• M29: 10,120,146 km (0.078 R)
• M30: 10,252,391 km (0.093 R)
• M31: 10,956,249 km (0.025 R)
• M32: 11,262,625 km (0.078 R)
• M33: 11,606,551 km (0.114 R)
• M34: 12,023,779 km (0.062 R)
• M35: 12,765,785 km (0.101 R)
• M36: 13,196,477 km (0.074 R)
• M37: 13,961,670 km (0.085 R)
• M38: 14,741,374 km (0.107 R)
• M39: 14,929,120 km (0.103 R)
• M40: 15,344,852 km (0.118 R)
• M41: 15,611,585 km (0.062 R)
• M42: 15,956,558 km (0.041 R)
• M43: 16,342,969 km (0.111 R)
• M44: 16,576,342 km (0.096 R)
• M45: 16,810,762 km (0.041 R)
• M46: 17,639,983 km (0.086 R)
• M47: 18,200,077 km (0.104 R)
• M48: 19,338,068 km (0.1 R)
• M49: 19,461,337 km (0.117 R)
• M50: 19,626,193 km (0.071 R)
• M51: 20,248,371 km (0.1 R)
• M52: 20,666,796 km (0.099 R)
• M53: 21,512,174 km (0.087 R)
• M54: 22,628,024 km (0.068 R)
• M55: 23,149,373 km (0.118 R)
• M56: 23,411,618 km (0.086 R)
• M57: 23,674,761 km (0.043 R)
• M58: 23,938,950 km (0.078 R)
• M59: 24,425,742 km (0.083 R)
• M60: 24,648,044 km (0.096 R)
• M61: 24,826,515 km (0.06 R)
• M62: 25,364,319 km (0.069 R)
• M63: 26,817,064 km (0.028 R)
• M64: 27,507,308 km (0.119 R)
• M65: 27,831,487 km (0.082 R)
• M66: 28,203,387 km (0.044 R)
• M67: 28,905,450 km (0.089 R)
• M68: 28,999,398 km (0.063 R)
• M69: 30,374,352 km (0.077 R)
• M70: 30,469,945 km (0.057 R)
• M71: 30,565,687 km (0.099 R)
• M72: 30,901,385 km (0.091 R)
• M73: 31,190,109 km (0.06 R)
• M74: 31,334,920 km (0.091 R)
• M75: 32,061,816 km (0.106 R)
• M76: 32,305,511 km (0.089 R)
• M77: 32,451,817 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.9

Radius: 8.9

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 3.86 AU - 5.38 AU

Year: 6980 Days

Day: 12.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 37,512,853 km

• M1: 113,545 km (0.105 R)
• M2: 182,509 km (0.113 R)
• M3: 379,979 km (0.111 R)
• M4: 473,328 km (0.107 R)
• M5: 528,978 km (0.107 R)
• M6: 599,289 km (0.047 R)
• M7: 928,554 km (0.108 R)
• M8: 1,167,163 km (0.04 R)
• M9: 1,392,008 km (0.079 R)
• M10: 2,264,613 km (0.093 R)
• M11: 2,546,156 km (0.04 R)
• M12: 2,733,153 km (0.038 R)
• M13: 3,434,318 km (0.109 R)
• M14: 4,116,036 km (0.118 R)
• M15: 4,262,193 km (0.086 R)
• M16: 4,360,628 km (0.107 R)
• M17: 4,459,812 km (0.07 R)
• M18: 4,761,999 km (0.082 R)
• M19: 4,941,367 km (0.116 R)
• M20: 5,149,159 km (0.114 R)
• M21: 6,768,406 km (0.071 R)
• M22: 7,203,437 km (0.095 R)
• M23: 7,409,583 km (0.109 R)
• M24: 7,978,952 km (0.09 R)
• M25: 8,938,024 km (0.119 R)
• M26: 9,543,746 km (0.107 R)
• M27: 9,705,311 km (0.067 R)
• M28: 10,162,782 km (0.113 R)
• M29: 10,228,605 km (0.068 R)
• M30: 10,560,413 km (0.114 R)
• M31: 11,200,393 km (0.117 R)
• M32: 11,680,003 km (0.068 R)
• M33: 13,051,217 km (0.056 R)
• M34: 13,230,735 km (0.079 R)
• M35: 14,177,241 km (0.074 R)
• M36: 14,435,746 km (0.104 R)
• M37: 15,258,534 km (0.082 R)
• M38: 15,675,613 km (0.037 R)
• M39: 16,637,378 km (0.091 R)
• M40: 18,779,470 km (0.042 R)
• M41: 19,063,406 km (0.079 R)
• M42: 19,553,489 km (0.107 R)
• M43: 19,800,176 km (0.098 R)
• M44: 20,254,953 km (0.093 R)
• M45: 20,338,130 km (0.064 R)
• M46: 21,006,683 km (0.117 R)
• M47: 21,852,659 km (0.088 R)
• M48: 22,408,415 km (0.09 R)
• M49: 25,660,074 km (0.076 R)
• M50: 27,340,208 km (0.101 R)
• M51: 28,031,499 km (0.114 R)
• M52: 28,124,100 km (0.034 R)
• M53: 28,216,851 km (0.114 R)
• M54: 28,542,077 km (0.089 R)
• M55: 28,962,148 km (0.111 R)
• M56: 29,102,620 km (0.08 R)
• M57: 30,234,627 km (0.06 R)
• M58: 31,621,400 km (0.049 R)
• M59: 32,152,921 km (0.072 R)
• M60: 32,395,568 km (0.098 R)
• M61: 32,541,277 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 11.2

Radius: 4.4

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 5.57 AU - 5.59 AU

Year: 9265 Days

Day: 16 Hours

Environment

Temp: -232 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 37,512,853 km

• M1: 1,332,319 km (0.095 R)
• M2: 2,718,493 km (0.036 R)
• M3: 3,379,117 km (0.081 R)
• M4: 3,459,301 km (0.101 R)
• M5: 3,774,504 km (0.078 R)
• M6: 4,147,751 km (0.1 R)
• M7: 4,825,579 km (0.098 R)
• M8: 5,795,422 km (0.096 R)
• M9: 6,852,181 km (0.088 R)
• M10: 7,484,381 km (0.054 R)
• M11: 7,664,198 km (0.098 R)
• M12: 7,724,336 km (0.059 R)
• M13: 8,335,294 km (0.112 R)
• M14: 8,993,375 km (0.114 R)
• M15: 9,280,603 km (0.066 R)
• M16: 9,554,517 km (0.096 R)
• M17: 10,525,706 km (0.045 R)
• M18: 10,642,991 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 146.7

Radius: 7.5

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 5.93 AU - 9.43 AU

Year: 14961 Days

Day: 15 Hours

Environment

Temp: -232 °C

Axial Tilt: 41.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 37,512,853 km

• M1: 183,706 km (0.113 R)
• M2: 268,528 km (0.09 R)
• M3: 1,330,224 km (0.111 R)
• M4: 1,668,315 km (0.073 R)
• M5: 1,928,765 km (0.056 R)
• M6: 2,488,112 km (0.095 R)
• M7: 2,693,061 km (0.098 R)
• M8: 2,785,812 km (0.107 R)
• M9: 3,541,131 km (0.105 R)
• M10: 4,714,726 km (0.077 R)
• M11: 5,140,332 km (0.117 R)
• M12: 6,058,415 km (0.087 R)
• M13: 6,551,938 km (0.113 R)
• M14: 6,645,885 km (0.119 R)
• M15: 6,994,299 km (0.037 R)
• M16: 8,378,827 km (0.097 R)
• M17: 8,446,745 km (0.051 R)
• M18: 8,755,066 km (0.107 R)
• M19: 9,312,318 km (0.102 R)
• M20: 10,242,218 km (0.091 R)
• M21: 10,424,428 km (0.056 R)
• M22: 11,313,937 km (0.113 R)
• M23: 11,882,110 km (0.075 R)
• M24: 12,615,140 km (0.116 R)
• M25: 12,888,904 km (0.089 R)
• M26: 13,085,625 km (0.073 R)
• M27: 14,449,808 km (0.089 R)
• M28: 15,523,173 km (0.111 R)
• M29: 16,154,027 km (0.083 R)
• M30: 16,836,193 km (0.107 R)
• M31: 17,267,334 km (0.116 R)
• M32: 19,027,952 km (0.075 R)
• M33: 19,748,116 km (0.098 R)
• M34: 20,020,533 km (0.034 R)
• M35: 21,122,322 km (0.115 R)
• M36: 21,261,448 km (0.096 R)
• M37: 21,540,597 km (0.041 R)
• M38: 21,587,272 km (0.105 R)
• M39: 23,192,906 km (0.107 R)
• M40: 24,495,305 km (0.107 R)
• M41: 24,641,462 km (0.111 R)
• M42: 25,524,538 km (0.105 R)
• M43: 25,722,157 km (0.108 R)
• M44: 26,617,949 km (0.096 R)
• M45: 29,832,508 km (0.11 R)
• M46: 30,354,006 km (0.113 R)
• M47: 31,723,724 km (0.075 R)
• M48: 31,776,832 km (0.106 R)
• M49: 32,416,063 km (0.078 R)
• M50: 32,737,400 km (0.085 R)
• M51: 33,005,928 km (0.101 R)
• M52: 33,653,387 km (0.1 R)
• M53: 34,033,067 km (0.047 R)
• M54: 34,196,128 km (0.064 R)
• M55: 35,455,443 km (0.061 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 223 - 10,347 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit