🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.49 AU - 0.81 AU

Year: 198 Days

Day: 36.6 Hours

Environment

Temp: 181 °C

Axial Tilt: 26.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 54,827,907 km

• M1: 134,788 km (0.049 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.64

Radius: 0.84

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.05 AU - 1.71 AU

Year: 614 Days

Day: 44.5 Hours

Environment

Temp: -34 °C

Axial Tilt: 19.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.04

Radius: 1.02

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.91 AU - 2.79 AU

Year: 1364 Days

Day: 14.9 Hours

Environment

Temp: -88 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.55

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 2.33 AU - 2.57 AU

Year: 1452 Days

Day: 19.9 Hours

Environment

Temp: -105 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 54,827,907 km

• M1: 572,810 km (0.06 R)
• M2: 2,291,989 km (0.105 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 2.53 AU - 2.57 AU

Year: 1542 Days

Day: 28.8 Hours

Environment

Temp: -95 °C

Axial Tilt: 7.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.45 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.9

Radius: 9.7

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 4.17 AU - 4.53 AU

Year: 3436 Days

Day: 5.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 54,827,907 km

• M1: 134,189 km (0.093 R)
• M2: 195,973 km (0.083 R)
• M3: 278,701 km (0.108 R)
• M4: 458,368 km (0.103 R)
• M5: 543,489 km (0.079 R)
• M6: 853,755 km (0.102 R)
• M7: 1,044,492 km (0.092 R)
• M8: 1,227,151 km (0.084 R)
• M9: 1,374,056 km (0.115 R)
• M10: 1,467,406 km (0.119 R)
• M11: 1,648,419 km (0.056 R)
• M12: 1,824,196 km (0.12 R)
• M13: 2,180,539 km (0.073 R)
• M14: 2,276,580 km (0.101 R)
• M15: 2,359,906 km (0.112 R)
• M16: 2,807,503 km (0.075 R)
• M17: 2,897,262 km (0.112 R)
• M18: 3,344,560 km (0.069 R)
• M19: 3,600,671 km (0.088 R)
• M20: 3,846,610 km (0.027 R)
• M21: 4,389,800 km (0.065 R)
• M22: 4,599,686 km (0.115 R)
• M23: 4,777,258 km (0.097 R)
• M24: 4,866,868 km (0.098 R)
• M25: 4,956,925 km (0.03 R)
• M26: 5,397,641 km (0.106 R)
• M27: 5,660,484 km (0.047 R)
• M28: 5,793,477 km (0.103 R)
• M29: 5,927,666 km (0.11 R)
• M30: 6,140,394 km (0.112 R)
• M31: 6,454,400 km (0.081 R)
• M32: 6,553,584 km (0.051 R)
• M33: 7,303,667 km (0.101 R)
• M34: 7,427,833 km (0.079 R)
• M35: 7,762,484 km (0.104 R)
• M36: 8,403,361 km (0.073 R)
• M37: 8,555,203 km (0.075 R)
• M38: 8,773,915 km (0.089 R)
• M39: 9,194,584 km (0.119 R)
• M40: 9,599,097 km (0.091 R)
• M41: 10,170,710 km (0.091 R)
• M42: 10,425,775 km (0.112 R)
• M43: 10,565,798 km (0.107 R)
• M44: 10,800,517 km (0.099 R)
• M45: 11,108,240 km (0.106 R)
• M46: 11,227,320 km (0.117 R)
• M47: 11,490,912 km (0.07 R)
• M48: 11,659,658 km (0.077 R)
• M49: 11,829,302 km (0.117 R)
• M50: 12,048,613 km (0.102 R)
• M51: 12,244,735 km (0.098 R)
• M52: 12,466,589 km (0.044 R)
• M53: 12,540,790 km (0.067 R)
• M54: 12,640,122 km (0.111 R)
• M55: 13,979,472 km (0.09 R)
• M56: 14,159,738 km (0.099 R)
• M57: 15,151,721 km (0.111 R)
• M58: 15,389,881 km (0.115 R)
• M59: 15,549,352 km (0.093 R)
• M60: 15,896,868 km (0.097 R)
• M61: 17,174,584 km (0.054 R)
• M62: 17,284,837 km (0.083 R)
• M63: 17,811,870 km (0.071 R)
• M64: 18,316,015 km (0.107 R)
• M65: 18,400,388 km (0.11 R)
• M66: 18,881,645 km (0.051 R)
• M67: 19,023,912 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.4

Radius: 9.2

Gravity: 6.72 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 3.96 AU - 4.92 AU

Year: 3543 Days

Day: 6.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 54,827,907 km

• M1: 159,771 km (0.095 R)
• M2: 261,347 km (0.101 R)
• M3: 521,199 km (0.076 R)
• M4: 622,178 km (0.104 R)
• M5: 933,042 km (0.108 R)
• M6: 1,082,490 km (0.067 R)
• M7: 1,405,023 km (0.113 R)
• M8: 1,701,227 km (0.112 R)
• M9: 1,856,809 km (0.112 R)
• M10: 1,972,897 km (0.079 R)
• M11: 2,367,087 km (0.12 R)
• M12: 2,605,845 km (0.116 R)
• M13: 2,852,383 km (0.04 R)
• M14: 3,332,891 km (0.075 R)
• M15: 3,439,255 km (0.036 R)
• M16: 3,820,131 km (0.093 R)
• M17: 4,214,621 km (0.12 R)
• M18: 4,368,407 km (0.072 R)
• M19: 4,563,184 km (0.109 R)
• M20: 4,900,976 km (0.11 R)
• M21: 5,124,026 km (0.088 R)
• M22: 5,308,929 km (0.049 R)
• M23: 5,454,189 km (0.089 R)
• M24: 5,642,981 km (0.095 R)
• M25: 5,876,803 km (0.114 R)
• M26: 6,048,840 km (0.03 R)
• M27: 6,157,149 km (0.099 R)
• M28: 6,508,255 km (0.034 R)
• M29: 6,820,765 km (0.072 R)
• M30: 7,047,107 km (0.076 R)
• M31: 7,229,915 km (0.088 R)
• M32: 7,298,880 km (0.117 R)
• M33: 7,929,585 km (0.106 R)
• M34: 8,383,764 km (0.089 R)
• M35: 8,529,023 km (0.025 R)
• M36: 8,723,949 km (0.115 R)
• M37: 8,821,936 km (0.078 R)
• M38: 8,994,422 km (0.109 R)
• M39: 9,242,605 km (0.106 R)
• M40: 9,392,652 km (0.094 R)
• M41: 9,898,742 km (0.082 R)
• M42: 9,975,336 km (0.075 R)
• M43: 10,910,921 km (0.103 R)
• M44: 10,990,058 km (0.055 R)
• M45: 11,228,966 km (0.119 R)
• M46: 11,550,003 km (0.115 R)
• M47: 11,711,718 km (0.083 R)
• M48: 12,228,728 km (0.093 R)
• M49: 12,366,059 km (0.079 R)
• M50: 12,448,637 km (0.08 R)
• M51: 12,531,514 km (0.083 R)
• M52: 12,808,869 km (0.073 R)
• M53: 13,256,765 km (0.041 R)
• M54: 13,454,384 km (0.112 R)
• M55: 13,681,473 km (0.097 R)
• M56: 14,110,670 km (0.114 R)
• M57: 14,225,860 km (0.097 R)
• M58: 14,399,244 km (0.087 R)
• M59: 14,457,288 km (0.117 R)
• M60: 14,544,354 km (0.09 R)
• M61: 14,894,263 km (0.04 R)
• M62: 16,051,104 km (0.036 R)
• M63: 16,564,374 km (0.083 R)
• M64: 16,716,365 km (0.071 R)
• M65: 17,052,362 km (0.103 R)
• M66: 17,144,365 km (0.049 R)
• M67: 17,359,786 km (0.112 R)
• M68: 17,762,054 km (0.117 R)
• M69: 17,824,287 km (0.062 R)
• M70: 18,670,712 km (0.117 R)
• M71: 19,083,004 km (0.078 R)
• M72: 19,722,983 km (0.091 R)
• M73: 20,240,143 km (0.101 R)
• M74: 20,402,756 km (0.1 R)
• M75: 21,519,355 km (0.073 R)
• M76: 22,252,384 km (0.114 R)
• M77: 22,353,063 km (0.083 R)
• M78: 22,453,743 km (0.078 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741.9

Radius: 13.7

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 7.97 AU - 8.39 AU

Year: 8861 Days

Day: 14.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 54,827,907 km

• M1: 382,372 km (0.106 R)
• M2: 559,795 km (0.11 R)
• M3: 661,073 km (0.108 R)
• M4: 902,823 km (0.116 R)
• M5: 1,062,743 km (0.093 R)
• M6: 1,252,134 km (0.085 R)
• M7: 1,600,996 km (0.117 R)
• M8: 1,957,787 km (0.09 R)
• M9: 2,074,623 km (0.067 R)
• M10: 2,217,938 km (0.107 R)
• M11: 2,439,492 km (0.093 R)
• M12: 2,904,443 km (0.1 R)
• M13: 3,038,782 km (0.101 R)
• M14: 3,175,065 km (0.111 R)
• M15: 3,741,144 km (0.081 R)
• M16: 3,858,279 km (0.101 R)
• M17: 3,976,611 km (0.12 R)
• M18: 4,462,056 km (0.112 R)
• M19: 5,589,724 km (0.113 R)
• M20: 6,099,255 km (0.116 R)
• M21: 7,090,041 km (0.101 R)
• M22: 7,604,359 km (0.03 R)
• M23: 7,828,457 km (0.113 R)
• M24: 8,824,928 km (0.104 R)
• M25: 9,458,026 km (0.062 R)
• M26: 9,618,694 km (0.076 R)
• M27: 10,064,945 km (0.101 R)
• M28: 10,977,941 km (0.113 R)
• M29: 11,960,799 km (0.074 R)
• M30: 12,572,803 km (0.097 R)
• M31: 12,927,201 km (0.062 R)
• M32: 13,510,034 km (0.114 R)
• M33: 13,736,525 km (0.097 R)
• M34: 13,964,213 km (0.101 R)
• M35: 15,451,366 km (0.088 R)
• M36: 15,545,912 km (0.09 R)
• M37: 15,974,210 km (0.113 R)
• M38: 16,696,469 km (0.048 R)
• M39: 17,134,940 km (0.095 R)
• M40: 17,527,934 km (0.089 R)
• M41: 19,537,332 km (0.12 R)
• M42: 19,947,978 km (0.084 R)
• M43: 20,882,217 km (0.116 R)
• M44: 21,196,821 km (0.095 R)
• M45: 22,310,278 km (0.106 R)
• M46: 23,225,668 km (0.094 R)
• M47: 23,988,617 km (0.095 R)
• M48: 24,428,285 km (0.116 R)
• M49: 24,815,295 km (0.105 R)
• M50: 25,037,298 km (0.053 R)
• M51: 25,595,298 km (0.089 R)
• M52: 25,988,292 km (0.114 R)
• M53: 27,179,390 km (0.118 R)
• M54: 28,504,229 km (0.095 R)
• M55: 29,496,960 km (0.111 R)
• M56: 30,441,671 km (0.056 R)
• M57: 30,619,842 km (0.033 R)
• M58: 31,937,649 km (0.072 R)
• M59: 32,179,100 km (0.075 R)
• M60: 32,542,623 km (0.109 R)
• M61: 33,334,894 km (0.069 R)
• M62: 34,071,962 km (0.057 R)
• M63: 34,690,101 km (0.107 R)
• M64: 35,062,899 km (0.065 R)
• M65: 35,437,043 km (0.059 R)
• M66: 36,314,883 km (0.112 R)
• M67: 36,883,205 km (0.11 R)
• M68: 37,964,499 km (0.073 R)
• M69: 38,412,694 km (0.108 R)
• M70: 38,927,161 km (0.091 R)
• M71: 39,508,648 km (0.096 R)
• M72: 40,028,052 km (0.119 R)
• M73: 40,680,299 km (0.115 R)
• M74: 42,194,079 km (0.115 R)
• M75: 42,791,424 km (0.08 R)
• M76: 42,991,137 km (0.107 R)
• M77: 43,793,131 km (0.058 R)
• M78: 44,397,955 km (0.113 R)
• M79: 44,870,236 km (0.12 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.1

Radius: 12.3

Gravity: 6.33 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 8.23 AU - 11.33 AU

Year: 11584 Days

Day: 14.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 54,827,907 km

• M1: 295,306 km (0.105 R)
• M2: 372,200 km (0.119 R)
• M3: 642,373 km (0.082 R)
• M4: 1,175,390 km (0.116 R)
• M5: 1,718,281 km (0.111 R)
• M6: 1,906,475 km (0.104 R)
• M7: 2,158,697 km (0.115 R)
• M8: 2,245,314 km (0.115 R)
• M9: 2,980,139 km (0.076 R)
• M10: 3,407,989 km (0.056 R)
• M11: 4,505,738 km (0.027 R)
• M12: 5,989,001 km (0.099 R)
• M13: 6,319,313 km (0.114 R)
• M14: 6,911,721 km (0.091 R)
• M15: 7,127,740 km (0.073 R)
• M16: 7,610,642 km (0.118 R)
• M17: 7,788,963 km (0.105 R)
• M18: 9,646,819 km (0.117 R)
• M19: 9,985,508 km (0.11 R)
• M20: 10,575,373 km (0.073 R)
• M21: 11,532,350 km (0.115 R)
• M22: 11,840,372 km (0.05 R)
• M23: 13,046,131 km (0.049 R)
• M24: 14,071,625 km (0.068 R)
• M25: 14,455,941 km (0.065 R)
• M26: 14,566,345 km (0.077 R)
• M27: 15,516,590 km (0.081 R)
• M28: 15,743,082 km (0.094 R)
• M29: 16,891,844 km (0.109 R)
• M30: 18,305,992 km (0.038 R)
• M31: 19,757,840 km (0.048 R)
• M32: 20,126,598 km (0.095 R)
• M33: 20,933,230 km (0.096 R)
• M34: 21,309,169 km (0.09 R)
• M35: 22,067,780 km (0.099 R)
• M36: 22,578,358 km (0.106 R)
• M37: 22,706,713 km (0.064 R)
• M38: 23,416,405 km (0.08 R)
• M39: 24,002,679 km (0.039 R)
• M40: 24,527,768 km (0.048 R)
• M41: 24,924,052 km (0.05 R)
• M42: 25,723,204 km (0.105 R)
• M43: 27,209,758 km (0.073 R)
• M44: 27,414,707 km (0.058 R)
• M45: 27,825,952 km (0.098 R)
• M46: 28,654,724 km (0.036 R)
• M47: 29,421,563 km (0.1 R)
• M48: 30,054,063 km (0.072 R)
• M49: 30,336,653 km (0.072 R)
• M50: 30,478,173 km (0.09 R)
• M51: 30,975,586 km (0.086 R)
• M52: 32,773,602 km (0.115 R)
• M53: 33,575,297 km (0.057 R)
• M54: 34,901,333 km (0.064 R)
• M55: 38,214,178 km (0.117 R)
• M56: 40,763,924 km (0.095 R)
• M57: 41,233,512 km (0.08 R)
• M58: 43,049,779 km (0.099 R)
• M59: 44,328,542 km (0.07 R)
• M60: 45,538,789 km (0.099 R)
• M61: 45,700,953 km (0.116 R)
• M62: 46,678,126 km (0.057 R)
• M63: 46,759,956 km (0.056 R)
• M64: 47,251,385 km (0.06 R)
• M65: 47,909,316 km (0.062 R)
• M66: 50,571,411 km (0.091 R)
• M67: 51,075,855 km (0.065 R)
• M68: 51,581,944 km (0.045 R)
• M69: 51,835,662 km (0.055 R)
• M70: 52,514,238 km (0.067 R)
• M71: 52,599,210 km (0.119 R)
• M72: 52,769,452 km (0.116 R)
• M73: 53,366,497 km (0.041 R)
• M74: 54,567,469 km (0.107 R)
• M75: 54,825,974 km (0.081 R)
• M76: 54,912,142 km (0.104 R)
• M77: 58,575,645 km (0.072 R)
• M78: 58,840,283 km (0.07 R)

Planet 10 - Ice Giant

Semi-Major Axis: 13.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 287.9

Radius: 3.2

Gravity: 28.12 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 12.46 AU - 14.62 AU

Year: 18870 Days

Day: 19.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 54,827,907 km

• M1: 65,225 km (0.099 R)
• M2: 230,830 km (0.069 R)
• M3: 324,478 km (0.118 R)
• M4: 785,389 km (0.049 R)
• M5: 926,908 km (0.083 R)
• M6: 947,703 km (0.101 R)
• M7: 1,098,348 km (0.105 R)
• M8: 1,187,657 km (0.099 R)
• M9: 1,210,396 km (0.095 R)
• M10: 1,349,822 km (0.093 R)
• M11: 1,720,675 km (0.102 R)
• M12: 2,204,325 km (0.099 R)
• M13: 2,403,290 km (0.064 R)
• M14: 2,757,388 km (0.039 R)
• M15: 4,293,758 km (0.078 R)
• M16: 4,613,150 km (0.107 R)
• M17: 4,757,511 km (0.061 R)
• M18: 4,940,170 km (0.119 R)
• M19: 5,050,873 km (0.077 R)
• M20: 5,274,671 km (0.12 R)
• M21: 5,501,761 km (0.12 R)
• M22: 6,122,592 km (0.108 R)
• M23: 7,219,593 km (0.103 R)
• M24: 7,261,481 km (0.097 R)
• M25: 8,463,649 km (0.098 R)
• M26: 9,268,336 km (0.12 R)
• M27: 9,496,323 km (0.104 R)
• M28: 10,237,730 km (0.067 R)
• M29: 10,378,801 km (0.074 R)
• M30: 12,121,467 km (0.113 R)
• M31: 12,220,800 km (0.065 R)
• M32: 13,127,961 km (0.118 R)
• M33: 13,435,086 km (0.105 R)
• M34: 13,486,547 km (0.075 R)
• M35: 14,056,366 km (0.062 R)
• M36: 14,740,028 km (0.108 R)
• M37: 15,596,326 km (0.104 R)
• M38: 15,650,331 km (0.069 R)
• M39: 15,867,098 km (0.078 R)
• M40: 15,976,005 km (0.104 R)
• M41: 16,744,340 km (0.12 R)
• M42: 17,300,545 km (0.049 R)
• M43: 18,316,763 km (0.092 R)
• M44: 18,602,495 km (0.09 R)
• M45: 18,659,791 km (0.048 R)
• M46: 21,239,457 km (0.087 R)
• M47: 21,359,285 km (0.114 R)
• M48: 22,144,075 km (0.097 R)
• M49: 22,265,549 km (0.09 R)
• M50: 22,448,357 km (0.09 R)
• M51: 22,753,986 km (0.061 R)
• M52: 22,999,625 km (0.058 R)
• M53: 23,679,398 km (0.119 R)
• M54: 24,303,072 km (0.094 R)
• M55: 24,491,266 km (0.096 R)
• M56: 25,566,725 km (0.101 R)
• M57: 29,416,477 km (0.117 R)
• M58: 29,750,828 km (0.118 R)
• M59: 29,817,997 km (0.046 R)
• M60: 30,423,569 km (0.095 R)
• M61: 30,491,188 km (0.097 R)
• M62: 31,169,315 km (0.104 R)
• M63: 33,094,490 km (0.089 R)
• M64: 37,058,534 km (0.103 R)
• M65: 37,782,139 km (0.111 R)
• M66: 38,437,228 km (0.115 R)
• M67: 39,463,769 km (0.076 R)
• M68: 40,647,836 km (0.102 R)
• M69: 41,244,283 km (0.085 R)
• M70: 42,672,344 km (0.11 R)
• M71: 44,040,267 km (0.091 R)
• M72: 44,269,600 km (0.074 R)
• M73: 46,196,421 km (0.094 R)
• M74: 51,332,265 km (0.079 R)
• M75: 51,654,200 km (0.109 R)
• M76: 52,219,231 km (0.103 R)
• M77: 52,786,207 km (0.081 R)
• M78: 53,763,081 km (0.068 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 277 - 20,183 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit