🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.49 AU - 0.67 AU

Year: 285 Days

Day: 45.8 Hours

Environment

Temp: -122 °C

Axial Tilt: 36.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,832,282 km

• M1: 229,184 km (0.049 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 387.7

Radius: 8.7

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.61 AU - 0.79 AU

Year: 378 Days

Day: 10.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 54,832,282 km

• M1: 136,732 km (0.075 R)
• M2: 201,359 km (0.096 R)
• M3: 269,426 km (0.059 R)
• M4: 329,265 km (0.113 R)
• M5: 389,702 km (0.053 R)
• M6: 463,454 km (0.092 R)
• M7: 545,733 km (0.115 R)
• M8: 659,577 km (0.092 R)
• M9: 729,888 km (0.093 R)
• M10: 803,041 km (0.108 R)
• M11: 893,548 km (0.08 R)
• M12: 957,127 km (0.041 R)
• M13: 1,049,728 km (0.107 R)
• M14: 1,113,158 km (0.033 R)
• M15: 1,235,828 km (0.071 R)
• M16: 1,354,459 km (0.108 R)
• M17: 1,410,858 km (0.063 R)
• M18: 1,589,477 km (0.057 R)
• M19: 1,733,241 km (0.112 R)
• M20: 1,910,365 km (0.091 R)
• M21: 1,983,967 km (0.028 R)
• M22: 2,098,559 km (0.119 R)
• M23: 2,184,877 km (0.102 R)
• M24: 2,251,598 km (0.052 R)
• M25: 2,360,804 km (0.068 R)
• M26: 2,445,327 km (0.113 R)
• M27: 2,590,138 km (0.082 R)
• M28: 2,737,940 km (0.035 R)
• M29: 3,053,293 km (0.042 R)
• M30: 3,145,594 km (0.058 R)
• M31: 3,244,628 km (0.08 R)
• M32: 3,309,254 km (0.045 R)
• M33: 3,463,939 km (0.033 R)
• M34: 3,542,029 km (0.115 R)
• M35: 3,675,769 km (0.047 R)
• M36: 3,879,522 km (0.083 R)
• M37: 4,017,451 km (0.117 R)
• M38: 4,112,296 km (0.107 R)
• M39: 4,208,039 km (0.114 R)
• M40: 4,278,649 km (0.069 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679

Radius: 9.9

Gravity: 6.93 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.71 AU - 1.17 AU

Year: 588 Days

Day: 11.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 54,832,282 km

• M1: 124,316 km (0.058 R)
• M2: 202,556 km (0.117 R)
• M3: 341,233 km (0.043 R)
• M4: 414,835 km (0.054 R)
• M5: 552,615 km (0.07 R)
• M6: 707,149 km (0.12 R)
• M7: 797,357 km (0.047 R)
• M8: 876,644 km (0.117 R)
• M9: 979,716 km (0.1 R)
• M10: 1,065,436 km (0.097 R)
• M11: 1,210,247 km (0.103 R)
• M12: 1,326,185 km (0.084 R)
• M13: 1,415,645 km (0.12 R)
• M14: 1,569,581 km (0.079 R)
• M15: 1,867,430 km (0.113 R)
• M16: 1,975,290 km (0.037 R)
• M17: 2,092,276 km (0.097 R)
• M18: 2,240,079 km (0.076 R)
• M19: 2,318,917 km (0.103 R)
• M20: 2,486,616 km (0.112 R)
• M21: 2,560,966 km (0.072 R)
• M22: 2,635,914 km (0.056 R)
• M23: 2,734,499 km (0.106 R)
• M24: 2,865,398 km (0.109 R)
• M25: 2,990,611 km (0.11 R)
• M26: 3,069,748 km (0.106 R)
• M27: 3,173,569 km (0.09 R)
• M28: 3,352,189 km (0.104 R)
• M29: 3,779,141 km (0.087 R)
• M30: 3,847,657 km (0.077 R)
• M31: 4,099,730 km (0.04 R)
• M32: 4,294,506 km (0.12 R)
• M33: 4,393,091 km (0.091 R)
• M34: 4,501,550 km (0.104 R)
• M35: 4,601,631 km (0.106 R)
• M36: 4,711,735 km (0.099 R)
• M37: 4,887,961 km (0.119 R)
• M38: 5,113,704 km (0.076 R)
• M39: 5,246,846 km (0.109 R)
• M40: 5,400,633 km (0.1 R)
• M41: 5,516,870 km (0.076 R)
• M42: 5,634,005 km (0.114 R)
• M43: 5,702,671 km (0.056 R)
• M44: 5,811,279 km (0.048 R)
• M45: 5,890,566 km (0.094 R)
• M46: 6,070,532 km (0.12 R)
• M47: 6,201,580 km (0.119 R)
• M48: 6,272,489 km (0.115 R)
• M49: 6,394,860 km (0.068 R)
• M50: 6,517,979 km (0.095 R)
• M51: 6,745,667 km (0.096 R)
• M52: 6,986,669 km (0.085 R)
• M53: 7,124,150 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.9

Radius: 12.7

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 1.04 AU - 1.5 AU

Year: 924 Days

Day: 9.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 54,832,282 km

• M1: 185,501 km (0.052 R)
• M2: 271,520 km (0.105 R)
• M3: 351,256 km (0.112 R)
• M4: 435,479 km (0.089 R)
• M5: 581,936 km (0.057 R)
• M6: 678,277 km (0.098 R)
• M7: 883,525 km (0.091 R)
• M8: 1,129,763 km (0.052 R)
• M9: 1,322,744 km (0.11 R)
• M10: 1,419,983 km (0.119 R)
• M11: 1,505,403 km (0.075 R)
• M12: 1,599,949 km (0.086 R)
• M13: 1,764,806 km (0.119 R)
• M14: 2,071,332 km (0.059 R)
• M15: 2,403,589 km (0.065 R)
• M16: 2,771,151 km (0.104 R)
• M17: 2,897,711 km (0.096 R)
• M18: 3,175,664 km (0.041 R)
• M19: 3,260,785 km (0.112 R)
• M20: 3,481,741 km (0.117 R)
• M21: 3,658,117 km (0.114 R)
• M22: 3,737,553 km (0.07 R)
• M23: 4,215,818 km (0.111 R)
• M24: 4,383,218 km (0.092 R)
• M25: 4,499,455 km (0.053 R)
• M26: 5,063,439 km (0.11 R)
• M27: 5,264,050 km (0.108 R)
• M28: 5,387,917 km (0.082 R)
• M29: 5,707,608 km (0.104 R)
• M30: 5,823,247 km (0.047 R)
• M31: 6,080,555 km (0.093 R)
• M32: 6,401,592 km (0.115 R)
• M33: 6,582,306 km (0.106 R)
• M34: 6,801,467 km (0.081 R)
• M35: 6,961,238 km (0.051 R)
• M36: 7,109,788 km (0.108 R)
• M37: 7,372,482 km (0.077 R)
• M38: 7,663,749 km (0.052 R)
• M39: 7,946,041 km (0.081 R)
• M40: 8,101,473 km (0.113 R)
• M41: 8,192,578 km (0.038 R)
• M42: 8,297,147 km (0.098 R)
• M43: 8,454,823 km (0.101 R)
• M44: 8,613,546 km (0.049 R)
• M45: 8,813,259 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767.1

Radius: 8.4

Gravity: 10.87 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.28 AU - 2.1 AU

Year: 1419 Days

Day: 12.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 54,832,282 km

• M1: 131,646 km (0.096 R)
• M2: 236,963 km (0.104 R)
• M3: 321,935 km (0.095 R)
• M4: 402,717 km (0.107 R)
• M5: 473,328 km (0.089 R)
• M6: 548,575 km (0.064 R)
• M7: 770,878 km (0.118 R)
• M8: 846,275 km (0.084 R)
• M9: 924,216 km (0.1 R)
• M10: 1,147,565 km (0.091 R)
• M11: 1,306,139 km (0.072 R)
• M12: 1,443,769 km (0.061 R)
• M13: 1,605,784 km (0.064 R)
• M14: 1,674,150 km (0.11 R)
• M15: 1,763,609 km (0.079 R)
• M16: 1,926,821 km (0.097 R)
• M17: 2,052,483 km (0.117 R)
• M18: 2,126,983 km (0.051 R)
• M19: 2,267,904 km (0.111 R)
• M20: 2,468,215 km (0.114 R)
• M21: 2,524,913 km (0.089 R)
• M22: 2,582,059 km (0.072 R)
• M23: 2,756,191 km (0.071 R)
• M24: 2,826,801 km (0.12 R)
• M25: 3,276,343 km (0.063 R)
• M26: 3,426,988 km (0.072 R)
• M27: 3,579,877 km (0.032 R)
• M28: 3,644,354 km (0.069 R)
• M29: 3,787,369 km (0.113 R)
• M30: 4,159,868 km (0.036 R)
• M31: 4,254,863 km (0.093 R)
• M32: 4,378,131 km (0.113 R)
• M33: 4,586,072 km (0.063 R)
• M34: 4,656,234 km (0.103 R)
• M35: 4,940,021 km (0.091 R)
• M36: 5,465,109 km (0.042 R)
• M37: 5,659,138 km (0.034 R)
• M38: 6,008,000 km (0.12 R)
• M39: 6,130,970 km (0.107 R)
• M40: 6,223,720 km (0.115 R)
• M41: 6,442,133 km (0.101 R)
• M42: 6,599,660 km (0.093 R)
• M43: 6,790,397 km (0.049 R)
• M44: 6,902,446 km (0.066 R)
• M45: 7,079,869 km (0.104 R)
• M46: 7,275,094 km (0.063 R)
• M47: 7,373,380 km (0.054 R)
• M48: 7,455,659 km (0.092 R)
• M49: 7,637,719 km (0.091 R)
• M50: 7,737,651 km (0.078 R)
• M51: 8,329,161 km (0.057 R)
• M52: 8,500,899 km (0.1 R)
• M53: 8,621,774 km (0.093 R)
• M54: 8,691,187 km (0.073 R)
• M55: 8,865,319 km (0.116 R)
• M56: 9,058,301 km (0.112 R)
• M57: 9,288,083 km (0.074 R)
• M58: 9,699,328 km (0.08 R)
• M59: 9,753,482 km (0.05 R)
• M60: 10,134,957 km (0.103 R)
• M61: 10,410,366 km (0.095 R)
• M62: 10,558,319 km (0.076 R)
• M63: 10,893,717 km (0.065 R)
• M64: 11,613,283 km (0.119 R)
• M65: 12,036,944 km (0.026 R)
• M66: 12,250,570 km (0.092 R)
• M67: 12,583,275 km (0.087 R)
• M68: 12,642,366 km (0.085 R)
• M69: 12,701,458 km (0.117 R)
• M70: 12,800,192 km (0.076 R)
• M71: 13,317,801 km (0.11 R)
• M72: 13,398,135 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.8

Radius: 15

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 2.34 AU - 3.06 AU

Year: 2865 Days

Day: 5.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 54,832,282 km

• M1: 186,997 km (0.044 R)
• M2: 304,731 km (0.055 R)
• M3: 447,896 km (0.113 R)
• M4: 544,237 km (0.052 R)
• M5: 643,720 km (0.113 R)
• M6: 751,131 km (0.112 R)
• M7: 858,393 km (0.033 R)
• M8: 956,230 km (0.03 R)
• M9: 1,074,412 km (0.115 R)
• M10: 1,181,524 km (0.094 R)
• M11: 1,309,879 km (0.057 R)
• M12: 1,434,195 km (0.118 R)
• M13: 1,715,140 km (0.086 R)
• M14: 1,922,632 km (0.034 R)
• M15: 2,055,475 km (0.076 R)
• M16: 2,170,516 km (0.081 R)
• M17: 2,429,021 km (0.107 R)
• M18: 2,607,192 km (0.101 R)
• M19: 2,709,367 km (0.118 R)
• M20: 2,813,038 km (0.106 R)
• M21: 3,168,184 km (0.073 R)
• M22: 3,400,808 km (0.12 R)
• M23: 3,689,981 km (0.092 R)
• M24: 3,831,201 km (0.076 R)
• M25: 3,974,367 km (0.056 R)
• M26: 4,132,492 km (0.111 R)
• M27: 4,496,164 km (0.034 R)
• M28: 4,619,881 km (0.081 R)
• M29: 4,828,421 km (0.086 R)
• M30: 4,926,707 km (0.112 R)
• M31: 5,370,713 km (0.067 R)
• M32: 5,472,889 km (0.104 R)
• M33: 6,023,259 km (0.098 R)
• M34: 6,129,474 km (0.106 R)
• M35: 6,312,881 km (0.054 R)
• M36: 6,467,266 km (0.09 R)
• M37: 7,033,194 km (0.099 R)
• M38: 7,145,243 km (0.063 R)
• M39: 7,419,606 km (0.055 R)
• M40: 7,582,518 km (0.099 R)
• M41: 7,680,953 km (0.046 R)
• M42: 7,796,293 km (0.107 R)
• M43: 7,912,231 km (0.069 R)
• M44: 8,078,883 km (0.119 R)
• M45: 8,314,051 km (0.106 R)
• M46: 8,500,600 km (0.078 R)
• M47: 8,791,418 km (0.05 R)
• M48: 8,964,054 km (0.116 R)
• M49: 9,755,128 km (0.119 R)
• M50: 9,880,191 km (0.098 R)
• M51: 10,295,026 km (0.105 R)
• M52: 10,477,087 km (0.075 R)
• M53: 10,733,946 km (0.09 R)
• M54: 11,160,300 km (0.064 R)
• M55: 11,366,297 km (0.113 R)
• M56: 11,460,244 km (0.026 R)
• M57: 11,743,882 km (0.073 R)
• M58: 11,972,467 km (0.112 R)
• M59: 12,376,082 km (0.088 R)
• M60: 12,511,768 km (0.083 R)
• M61: 13,157,432 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.6

Radius: 9

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 5.09 AU - 5.77 AU

Year: 8170 Days

Day: 14.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 54,832,282 km

• M1: 125,363 km (0.061 R)
• M2: 212,728 km (0.072 R)
• M3: 464,501 km (0.118 R)
• M4: 558,150 km (0.108 R)
• M5: 658,679 km (0.098 R)
• M6: 918,381 km (0.107 R)
• M7: 1,224,309 km (0.108 R)
• M8: 1,358,648 km (0.094 R)
• M9: 1,892,712 km (0.084 R)
• M10: 1,979,030 km (0.064 R)
• M11: 2,066,695 km (0.064 R)
• M12: 2,155,705 km (0.099 R)
• M13: 2,467,916 km (0.115 R)
• M14: 2,973,108 km (0.049 R)
• M15: 3,134,973 km (0.091 R)
• M16: 3,404,399 km (0.108 R)
• M17: 3,659,762 km (0.11 R)
• M18: 3,833,595 km (0.106 R)
• M19: 4,032,261 km (0.047 R)
• M20: 4,121,721 km (0.095 R)
• M21: 4,325,473 km (0.079 R)
• M22: 5,076,305 km (0.054 R)
• M23: 5,148,710 km (0.104 R)
• M24: 5,343,786 km (0.105 R)
• M25: 5,565,938 km (0.105 R)
• M26: 6,122,143 km (0.059 R)
• M27: 6,380,798 km (0.115 R)
• M28: 8,261,393 km (0.033 R)
• M29: 8,691,487 km (0.081 R)
• M30: 8,865,619 km (0.084 R)
• M31: 10,762,370 km (0.042 R)
• M32: 12,845,221 km (0.088 R)
• M33: 13,176,580 km (0.084 R)
• M34: 13,813,867 km (0.086 R)
• M35: 15,013,792 km (0.12 R)
• M36: 15,118,211 km (0.097 R)
• M37: 15,187,924 km (0.076 R)
• M38: 15,257,786 km (0.113 R)
• M39: 15,643,898 km (0.111 R)
• M40: 15,891,333 km (0.066 R)
• M41: 16,139,965 km (0.067 R)
• M42: 16,713,224 km (0.066 R)
• M43: 18,027,291 km (0.03 R)
• M44: 19,109,931 km (0.093 R)
• M45: 20,136,771 km (0.084 R)
• M46: 20,328,855 km (0.093 R)
• M47: 21,064,427 km (0.047 R)
• M48: 21,769,333 km (0.119 R)
• M49: 21,927,009 km (0.054 R)
• M50: 22,045,490 km (0.112 R)
• M51: 22,283,201 km (0.052 R)
• M52: 23,484,472 km (0.089 R)
• M53: 24,255,948 km (0.093 R)
• M54: 24,419,459 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 672.9

Radius: 5.8

Gravity: 20 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 5.67 AU - 8.63 AU

Year: 12345 Days

Day: 19.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 54,832,282 km

• M1: 97,538 km (0.114 R)
• M2: 144,063 km (0.061 R)
• M3: 193,580 km (0.115 R)
• M4: 263,143 km (0.071 R)
• M5: 594,801 km (0.094 R)
• M6: 979,567 km (0.112 R)
• M7: 1,064,688 km (0.067 R)
• M8: 1,174,493 km (0.109 R)
• M9: 1,288,038 km (0.088 R)
• M10: 1,908,719 km (0.026 R)
• M11: 1,988,754 km (0.088 R)
• M12: 2,179,940 km (0.113 R)
• M13: 2,376,961 km (0.097 R)
• M14: 2,550,494 km (0.049 R)
• M15: 2,638,906 km (0.081 R)
• M16: 3,190,025 km (0.106 R)
• M17: 3,285,319 km (0.084 R)
• M18: 3,742,340 km (0.11 R)
• M19: 3,978,406 km (0.118 R)
• M20: 4,149,845 km (0.094 R)
• M21: 4,429,443 km (0.094 R)
• M22: 4,571,561 km (0.07 R)
• M23: 4,933,289 km (0.081 R)
• M24: 5,192,093 km (0.11 R)
• M25: 5,493,234 km (0.116 R)
• M26: 5,531,232 km (0.09 R)
• M27: 5,800,059 km (0.095 R)
• M28: 6,151,764 km (0.093 R)
• M29: 6,470,407 km (0.078 R)
• M30: 6,917,106 km (0.089 R)
• M31: 8,012,312 km (0.116 R)
• M32: 8,447,642 km (0.107 R)
• M33: 8,579,887 km (0.096 R)
• M34: 8,757,011 km (0.059 R)
• M35: 8,846,171 km (0.082 R)
• M36: 8,890,751 km (0.106 R)
• M37: 9,070,119 km (0.091 R)
• M38: 10,171,159 km (0.105 R)
• M39: 10,880,552 km (0.103 R)
• M40: 11,120,657 km (0.103 R)
• M41: 11,217,148 km (0.047 R)
• M42: 11,265,468 km (0.03 R)
• M43: 12,197,313 km (0.069 R)
• M44: 14,290,785 km (0.084 R)
• M45: 14,553,479 km (0.11 R)
• M46: 15,137,360 km (0.076 R)
• M47: 15,782,875 km (0.062 R)
• M48: 15,837,179 km (0.113 R)
• M49: 17,100,981 km (0.069 R)
• M50: 18,282,805 km (0.104 R)
• M51: 18,625,384 km (0.052 R)
• M52: 19,723,881 km (0.034 R)
• M53: 21,320,838 km (0.084 R)
• M54: 22,225,756 km (0.067 R)
• M55: 23,575,727 km (0.095 R)
• M56: 23,948,375 km (0.075 R)
• M57: 24,825,617 km (0.091 R)
• M58: 25,015,008 km (0.06 R)
• M59: 25,777,209 km (0.112 R)
• M60: 26,418,236 km (0.118 R)
• M61: 27,194,350 km (0.058 R)
• M62: 27,389,575 km (0.118 R)
• M63: 28,372,583 km (0.077 R)
• M64: 30,305,537 km (0.093 R)
• M65: 31,185,771 km (0.076 R)
• M66: 35,355,662 km (0.099 R)
• M67: 35,639,898 km (0.079 R)
• M68: 37,432,978 km (0.071 R)
• M69: 39,992,298 km (0.088 R)
• M70: 40,510,954 km (0.045 R)
• M71: 40,808,205 km (0.116 R)
• M72: 41,779,544 km (0.114 R)
• M73: 42,381,077 km (0.054 R)
• M74: 44,355,918 km (0.03 R)
• M75: 44,739,038 km (0.103 R)
• M76: 45,508,719 km (0.066 R)
• M77: 46,127,606 km (0.118 R)
• M78: 47,061,097 km (0.09 R)
• M79: 47,530,235 km (0.065 R)
• M80: 47,608,625 km (0.114 R)
• M81: 48,079,559 km (0.104 R)
• M82: 50,857,143 km (0.095 R)
• M83: 51,177,880 km (0.037 R)
• M84: 51,338,548 km (0.101 R)
• M85: 54,012,910 km (0.096 R)
• M86: 54,258,250 km (0.089 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: 521 - 11,797 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit