🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.51 AU - 0.67 AU

Year: 174 Days

Day: 30.6 Hours

Environment

Temp: 175 °C

Axial Tilt: 4.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.43

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.04 AU - 1.34 AU

Year: 497 Days

Day: 32.7 Hours

Environment

Temp: -20 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.15

Radius: 0.47

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 2.33 AU - 3.67 AU

Year: 1990 Days

Day: 47.1 Hours

Environment

Temp: -107 °C

Axial Tilt: 10.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 2.71 AU - 3.33 AU

Year: 2009 Days

Day: 37.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,760,559 km

• M1: 39,195 km (0.11 R)

Asteroid Belt

Center: 3.74 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.4

Radius: 12.5

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 4.02 AU - 4.9 AU

Year: 3606 Days

Day: 5.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 54,760,559 km

• M1: 169,345 km (0.104 R)
• M2: 297,401 km (0.1 R)
• M3: 460,911 km (0.118 R)
• M4: 612,902 km (0.091 R)
• M5: 794,813 km (0.081 R)
• M6: 972,536 km (0.076 R)
• M7: 1,066,782 km (0.096 R)
• M8: 1,342,940 km (0.04 R)
• M9: 1,422,377 km (0.107 R)
• M10: 1,586,336 km (0.12 R)
• M11: 1,699,282 km (0.094 R)
• M12: 1,903,633 km (0.097 R)
• M13: 2,024,209 km (0.081 R)
• M14: 2,939,299 km (0.107 R)
• M15: 3,514,204 km (0.05 R)
• M16: 3,625,953 km (0.119 R)
• M17: 3,891,489 km (0.065 R)
• M18: 3,987,830 km (0.097 R)
• M19: 4,163,309 km (0.099 R)
• M20: 4,542,390 km (0.109 R)
• M21: 4,623,621 km (0.118 R)
• M22: 5,058,203 km (0.098 R)
• M23: 5,269,735 km (0.069 R)
• M24: 5,441,174 km (0.084 R)
• M25: 6,417,001 km (0.107 R)
• M26: 6,554,182 km (0.083 R)
• M27: 6,646,334 km (0.119 R)
• M28: 6,855,023 km (0.082 R)
• M29: 7,089,593 km (0.113 R)
• M30: 7,184,139 km (0.088 R)
• M31: 7,374,577 km (0.033 R)
• M32: 7,542,425 km (0.089 R)
• M33: 7,906,696 km (0.091 R)
• M34: 8,029,516 km (0.107 R)
• M35: 8,202,302 km (0.116 R)
• M36: 9,162,271 km (0.075 R)
• M37: 9,265,494 km (0.11 R)
• M38: 9,655,645 km (0.088 R)
• M39: 9,734,333 km (0.12 R)
• M40: 9,839,650 km (0.073 R)
• M41: 9,918,788 km (0.047 R)
• M42: 10,051,182 km (0.094 R)
• M43: 10,452,254 km (0.12 R)
• M44: 10,614,119 km (0.092 R)
• M45: 11,049,897 km (0.102 R)
• M46: 11,491,510 km (0.071 R)
• M47: 11,630,636 km (0.046 R)
• M48: 12,108,152 km (0.074 R)
• M49: 12,306,669 km (0.106 R)
• M50: 12,534,806 km (0.049 R)
• M51: 12,879,778 km (0.097 R)
• M52: 13,315,407 km (0.074 R)
• M53: 13,520,356 km (0.111 R)
• M54: 13,637,940 km (0.05 R)
• M55: 14,171,257 km (0.035 R)
• M56: 14,290,636 km (0.038 R)
• M57: 14,440,533 km (0.097 R)
• M58: 14,802,111 km (0.114 R)
• M59: 15,044,908 km (0.12 R)
• M60: 15,380,755 km (0.064 R)
• M61: 16,466,238 km (0.063 R)
• M62: 16,780,992 km (0.089 R)
• M63: 17,736,922 km (0.049 R)
• M64: 19,236,790 km (0.118 R)
• M65: 19,369,184 km (0.061 R)
• M66: 19,935,113 km (0.105 R)
• M67: 20,540,236 km (0.077 R)
• M68: 21,390,700 km (0.113 R)
• M69: 21,493,624 km (0.114 R)
• M70: 21,630,955 km (0.086 R)
• M71: 21,734,177 km (0.089 R)
• M72: 21,941,071 km (0.12 R)
• M73: 22,461,223 km (0.079 R)
• M74: 22,775,378 km (0.08 R)
• M75: 23,196,347 km (0.071 R)
• M76: 23,620,008 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 633.5

Radius: 13.6

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 6.83 AU - 6.99 AU

Year: 6955 Days

Day: 10 Hours

Environment

Temp: -160 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 54,760,559 km

• M1: 205,547 km (0.113 R)
• M2: 322,084 km (0.057 R)
• M3: 601,832 km (0.112 R)
• M4: 692,040 km (0.093 R)
• M5: 903,721 km (0.109 R)
• M6: 1,041,650 km (0.079 R)
• M7: 1,482,216 km (0.086 R)
• M8: 1,648,269 km (0.083 R)
• M9: 1,859,801 km (0.095 R)
• M10: 2,225,717 km (0.096 R)
• M11: 2,417,502 km (0.092 R)
• M12: 2,570,391 km (0.108 R)
• M13: 2,932,567 km (0.12 R)
• M14: 3,432,822 km (0.081 R)
• M15: 3,555,941 km (0.106 R)
• M16: 3,655,574 km (0.092 R)
• M17: 3,756,253 km (0.081 R)
• M18: 3,883,262 km (0.095 R)
• M19: 4,037,647 km (0.089 R)
• M20: 4,273,114 km (0.093 R)
• M21: 5,231,737 km (0.119 R)
• M22: 6,528,301 km (0.119 R)
• M23: 7,275,992 km (0.048 R)
• M24: 7,531,355 km (0.099 R)
• M25: 7,822,173 km (0.106 R)
• M26: 8,381,520 km (0.118 R)
• M27: 8,615,641 km (0.051 R)
• M28: 8,750,428 km (0.111 R)
• M29: 9,400,281 km (0.032 R)
• M30: 9,539,108 km (0.117 R)
• M31: 9,995,083 km (0.08 R)
• M32: 10,314,773 km (0.115 R)
• M33: 11,001,128 km (0.069 R)
• M34: 11,147,435 km (0.074 R)
• M35: 11,627,794 km (0.074 R)
• M36: 13,302,991 km (0.099 R)
• M37: 14,248,449 km (0.112 R)
• M38: 14,408,220 km (0.069 R)
• M39: 14,608,531 km (0.089 R)
• M40: 15,872,035 km (0.083 R)
• M41: 16,203,843 km (0.085 R)
• M42: 17,682,020 km (0.119 R)
• M43: 18,069,179 km (0.072 R)
• M44: 19,071,185 km (0.081 R)
• M45: 19,601,061 km (0.114 R)
• M46: 19,912,524 km (0.089 R)
• M47: 20,765,980 km (0.086 R)
• M48: 21,311,114 km (0.11 R)
• M49: 21,402,369 km (0.085 R)
• M50: 22,276,469 km (0.102 R)
• M51: 22,601,546 km (0.114 R)
• M52: 22,787,944 km (0.102 R)
• M53: 22,928,118 km (0.116 R)
• M54: 23,680,445 km (0.111 R)
• M55: 23,869,836 km (0.094 R)
• M56: 24,488,723 km (0.111 R)
• M57: 24,632,187 km (0.109 R)
• M58: 24,920,163 km (0.039 R)
• M59: 26,034,517 km (0.089 R)
• M60: 26,622,287 km (0.116 R)
• M61: 26,967,260 km (0.117 R)
• M62: 27,264,062 km (0.115 R)
• M63: 27,761,326 km (0.116 R)
• M64: 28,764,529 km (0.068 R)
• M65: 29,270,619 km (0.108 R)
• M66: 29,575,798 km (0.085 R)
• M67: 30,445,859 km (0.089 R)
• M68: 31,272,537 km (0.119 R)
• M69: 31,428,418 km (0.078 R)
• M70: 32,736,951 km (0.067 R)
• M71: 34,277,061 km (0.108 R)
• M72: 35,461,128 km (0.084 R)
• M73: 35,949,416 km (0.078 R)
• M74: 36,167,230 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803.5

Radius: 9.2

Gravity: 9.49 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 7.23 AU - 7.47 AU

Year: 7630 Days

Day: 10.1 Hours

Environment

Temp: -178 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 54,760,559 km

• M1: 366,814 km (0.08 R)
• M2: 1,526,197 km (0.061 R)
• M3: 1,650,065 km (0.115 R)
• M4: 1,864,289 km (0.045 R)
• M5: 2,248,905 km (0.094 R)
• M6: 2,486,915 km (0.075 R)
• M7: 2,633,521 km (0.069 R)
• M8: 2,758,136 km (0.072 R)
• M9: 2,910,127 km (0.106 R)
• M10: 4,879,135 km (0.118 R)
• M11: 6,118,703 km (0.05 R)
• M12: 6,688,222 km (0.089 R)
• M13: 6,824,655 km (0.1 R)
• M14: 6,996,543 km (0.067 R)
• M15: 7,415,118 km (0.085 R)
• M16: 7,556,338 km (0.042 R)
• M17: 7,662,852 km (0.077 R)
• M18: 7,841,621 km (0.108 R)
• M19: 7,913,578 km (0.095 R)
• M20: 7,985,684 km (0.107 R)
• M21: 8,681,464 km (0.102 R)
• M22: 8,830,463 km (0.092 R)
• M23: 8,980,360 km (0.092 R)
• M24: 9,549,730 km (0.04 R)
• M25: 11,246,170 km (0.086 R)
• M26: 11,449,473 km (0.105 R)
• M27: 11,612,984 km (0.097 R)
• M28: 11,694,963 km (0.042 R)
• M29: 11,983,687 km (0.08 R)
• M30: 12,316,393 km (0.119 R)
• M31: 12,821,286 km (0.119 R)
• M32: 13,461,864 km (0.108 R)
• M33: 14,200,578 km (0.082 R)
• M34: 14,729,855 km (0.108 R)
• M35: 15,400,502 km (0.111 R)
• M36: 16,632,740 km (0.072 R)
• M37: 17,284,239 km (0.071 R)
• M38: 17,518,808 km (0.097 R)
• M39: 17,754,574 km (0.09 R)
• M40: 18,563,899 km (0.074 R)
• M41: 18,804,153 km (0.052 R)
• M42: 18,997,284 km (0.086 R)
• M43: 19,629,036 km (0.099 R)
• M44: 19,873,928 km (0.118 R)
• M45: 20,021,281 km (0.111 R)
• M46: 20,564,920 km (0.098 R)
• M47: 20,813,552 km (0.073 R)
• M48: 21,213,576 km (0.108 R)
• M49: 21,313,957 km (0.06 R)
• M50: 21,818,251 km (0.111 R)
• M51: 21,970,392 km (0.089 R)
• M52: 22,071,969 km (0.105 R)
• M53: 22,736,034 km (0.113 R)
• M54: 23,303,010 km (0.071 R)
• M55: 24,083,761 km (0.073 R)
• M56: 24,188,480 km (0.114 R)
• M57: 24,820,082 km (0.05 R)
• M58: 25,670,695 km (0.1 R)
• M59: 26,315,013 km (0.08 R)
• M60: 26,531,033 km (0.089 R)
• M61: 28,666,991 km (0.084 R)
• M62: 28,944,944 km (0.081 R)
• M63: 29,615,292 km (0.07 R)
• M64: 29,896,237 km (0.069 R)
• M65: 30,121,531 km (0.075 R)
• M66: 30,347,424 km (0.032 R)
• M67: 31,085,540 km (0.082 R)
• M68: 31,829,490 km (0.076 R)
• M69: 32,405,741 km (0.102 R)
• M70: 32,753,257 km (0.086 R)
• M71: 32,811,151 km (0.069 R)
• M72: 33,101,820 km (0.098 R)
• M73: 33,978,912 km (0.068 R)
• M74: 34,096,347 km (0.074 R)
• M75: 34,214,080 km (0.104 R)
• M76: 34,390,755 km (0.055 R)
• M77: 34,449,697 km (0.119 R)
• M78: 35,100,747 km (0.089 R)
• M79: 36,957,107 km (0.095 R)
• M80: 37,017,544 km (0.053 R)
• M81: 41,893,089 km (0.071 R)
• M82: 42,145,311 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329

Radius: 13.2

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 8.7 AU - 12.86 AU

Year: 13552 Days

Day: 11.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 54,760,559 km

• M1: 196,871 km (0.075 R)
• M2: 303,534 km (0.098 R)
• M3: 616,044 km (0.091 R)
• M4: 854,204 km (0.05 R)
• M5: 940,821 km (0.036 R)
• M6: 1,067,530 km (0.095 R)
• M7: 1,220,120 km (0.098 R)
• M8: 1,656,348 km (0.109 R)
• M9: 2,188,467 km (0.105 R)
• M10: 2,589,390 km (0.077 R)
• M11: 2,986,422 km (0.067 R)
• M12: 3,575,090 km (0.085 R)
• M13: 3,838,532 km (0.118 R)
• M14: 4,017,750 km (0.102 R)
• M15: 4,230,329 km (0.101 R)
• M16: 4,540,744 km (0.112 R)
• M17: 4,730,584 km (0.119 R)
• M18: 5,118,042 km (0.114 R)
• M19: 5,516,122 km (0.091 R)
• M20: 5,787,044 km (0.109 R)
• M21: 5,889,818 km (0.03 R)
• M22: 6,097,160 km (0.12 R)
• M23: 6,342,202 km (0.038 R)
• M24: 6,878,211 km (0.12 R)
• M25: 7,615,579 km (0.11 R)
• M26: 8,416,975 km (0.103 R)
• M27: 9,165,114 km (0.1 R)
• M28: 9,486,599 km (0.117 R)
• M29: 9,975,784 km (0.075 R)
• M30: 10,058,063 km (0.104 R)
• M31: 10,978,689 km (0.1 R)
• M32: 11,063,810 km (0.079 R)
• M33: 11,191,716 km (0.106 R)
• M34: 12,810,365 km (0.112 R)
• M35: 13,715,731 km (0.034 R)
• M36: 15,112,078 km (0.117 R)
• M37: 15,254,196 km (0.1 R)
• M38: 16,068,008 km (0.106 R)
• M39: 16,164,798 km (0.116 R)
• M40: 16,310,057 km (0.101 R)
• M41: 16,455,915 km (0.117 R)
• M42: 17,191,638 km (0.055 R)
• M43: 17,887,866 km (0.087 R)
• M44: 18,088,477 km (0.034 R)
• M45: 18,492,092 km (0.119 R)
• M46: 19,000,725 km (0.047 R)
• M47: 20,396,922 km (0.103 R)
• M48: 20,975,267 km (0.058 R)
• M49: 21,293,013 km (0.059 R)
• M50: 21,452,484 km (0.092 R)
• M51: 21,826,030 km (0.053 R)
• M52: 22,094,259 km (0.096 R)
• M53: 22,525,699 km (0.1 R)
• M54: 24,389,988 km (0.12 R)
• M55: 25,509,728 km (0.109 R)
• M56: 25,792,318 km (0.079 R)
• M57: 26,818,111 km (0.113 R)
• M58: 27,393,764 km (0.053 R)
• M59: 28,381,858 km (0.1 R)
• M60: 28,792,055 km (0.052 R)
• M61: 29,027,372 km (0.112 R)
• M62: 29,263,288 km (0.111 R)
• M63: 29,618,434 km (0.066 R)
• M64: 30,332,913 km (0.063 R)
• M65: 30,692,247 km (0.087 R)
• M66: 30,992,789 km (0.069 R)
• M67: 32,326,903 km (0.088 R)
• M68: 33,432,431 km (0.114 R)
• M69: 34,300,847 km (0.11 R)
• M70: 34,612,759 km (0.09 R)
• M71: 35,365,236 km (0.071 R)
• M72: 35,743,569 km (0.118 R)
• M73: 36,249,958 km (0.113 R)
• M74: 36,822,618 km (0.063 R)
• M75: 37,078,131 km (0.074 R)
• M76: 37,398,271 km (0.112 R)
• M77: 38,299,598 km (0.092 R)
• M78: 38,688,104 km (0.063 R)
• M79: 38,817,805 km (0.093 R)
• M80: 39,208,106 km (0.116 R)
• M81: 40,123,645 km (0.092 R)
• M82: 42,577,200 km (0.047 R)
• M83: 44,466,022 km (0.103 R)
• M84: 45,900,516 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 409.3

Radius: 4.4

Gravity: 21.14 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 8.97 AU - 14.91 AU

Year: 15797 Days

Day: 24.3 Hours

Environment

Temp: -193 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 54,760,559 km

• M1: 145,409 km (0.097 R)
• M2: 367,861 km (0.039 R)
• M3: 1,631,365 km (0.117 R)
• M4: 1,707,360 km (0.119 R)
• M5: 1,784,703 km (0.105 R)
• M6: 2,160,343 km (0.051 R)
• M7: 2,357,214 km (0.094 R)
• M8: 2,982,084 km (0.084 R)
• M9: 3,013,051 km (0.062 R)
• M10: 3,169,530 km (0.116 R)
• M11: 3,490,418 km (0.066 R)
• M12: 4,443,057 km (0.095 R)
• M13: 4,801,643 km (0.049 R)
• M14: 4,874,497 km (0.039 R)
• M15: 4,947,800 km (0.118 R)
• M16: 5,281,702 km (0.105 R)
• M17: 5,356,950 km (0.087 R)
• M18: 6,247,057 km (0.097 R)
• M19: 6,366,586 km (0.103 R)
• M20: 6,446,621 km (0.072 R)
• M21: 6,486,713 km (0.101 R)
• M22: 6,567,347 km (0.095 R)
• M23: 6,975,150 km (0.049 R)
• M24: 7,016,439 km (0.05 R)
• M25: 8,421,911 km (0.112 R)
• M26: 8,642,419 km (0.066 R)
• M27: 8,686,700 km (0.08 R)
• M28: 8,864,571 km (0.105 R)
• M29: 9,314,861 km (0.114 R)
• M30: 9,405,817 km (0.099 R)
• M31: 10,050,583 km (0.088 R)
• M32: 10,284,255 km (0.065 R)
• M33: 12,217,509 km (0.114 R)
• M34: 12,416,922 km (0.077 R)
• M35: 13,327,375 km (0.112 R)
• M36: 17,457,324 km (0.117 R)
• M37: 17,963,862 km (0.096 R)
• M38: 19,979,244 km (0.073 R)
• M39: 20,155,321 km (0.079 R)
• M40: 21,162,713 km (0.041 R)
• M41: 21,342,231 km (0.103 R)
• M42: 22,307,885 km (0.113 R)
• M43: 22,429,658 km (0.081 R)
• M44: 23,907,236 km (0.116 R)
• M45: 24,595,087 km (0.054 R)
• M46: 25,036,101 km (0.115 R)
• M47: 25,543,238 km (0.098 R)
• M48: 25,670,695 km (0.077 R)
• M49: 26,053,965 km (0.034 R)
• M50: 26,632,311 km (0.101 R)
• M51: 26,761,413 km (0.111 R)
• M52: 27,150,069 km (0.047 R)
• M53: 27,475,295 km (0.07 R)
• M54: 28,327,105 km (0.07 R)
• M55: 28,723,090 km (0.117 R)
• M56: 28,855,484 km (0.101 R)
• M57: 28,921,906 km (0.106 R)
• M58: 30,933,848 km (0.082 R)
• M59: 31,546,152 km (0.102 R)
• M60: 33,476,712 km (0.086 R)
• M61: 35,090,873 km (0.105 R)
• M62: 36,085,849 km (0.033 R)
• M63: 36,228,715 km (0.087 R)
• M64: 36,300,223 km (0.11 R)
• M65: 38,979,072 km (0.08 R)
• M66: 39,272,433 km (0.119 R)
• M67: 40,601,760 km (0.106 R)
• M68: 41,571,004 km (0.057 R)
• M69: 42,246,439 km (0.063 R)
• M70: 43,380,241 km (0.102 R)
• M71: 44,447,472 km (0.095 R)
• M72: 46,064,476 km (0.03 R)
• M73: 46,297,100 km (0.07 R)
• M74: 47,543,998 km (0.088 R)
• M75: 49,593,789 km (0.114 R)
• M76: 50,389,799 km (0.092 R)
• M77: 50,549,420 km (0.094 R)
• M78: 51,591,668 km (0.086 R)
• M79: 52,640,948 km (0.081 R)
• M80: 53,534,346 km (0.094 R)
• M81: 54,023,681 km (0.093 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: 300 - 12,454 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit