🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.76 AU - 0.86 AU

Year: 270 Days

Day: 36.3 Hours

Environment

Temp: 89 °C

Axial Tilt: 22.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.64 AU - 1 AU

Year: 275 Days

Day: 19.8 Hours

Environment

Temp: 159 °C

Axial Tilt: 28.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 36,710,934 km

• M1: 152,440 km (0.04 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.65 AU - 1.77 AU

Year: 829 Days

Day: 31.9 Hours

Environment

Temp: -51 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.58

Radius: 1.67

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.79 AU - 1.85 AU

Year: 911 Days

Day: 30.2 Hours

Environment

Temp: -58 °C

Axial Tilt: 48.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458.6

Radius: 8.8

Gravity: 5.92 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 4.42 AU - 5.22 AU

Year: 3924 Days

Day: 5.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 36,710,934 km

• M1: 111,450 km (0.112 R)
• M2: 237,412 km (0.089 R)
• M3: 359,484 km (0.046 R)
• M4: 421,866 km (0.107 R)
• M5: 541,544 km (0.059 R)
• M6: 615,595 km (0.048 R)
• M7: 723,455 km (0.041 R)
• M8: 1,062,594 km (0.095 R)
• M9: 1,281,156 km (0.089 R)
• M10: 1,382,883 km (0.098 R)
• M11: 1,447,958 km (0.085 R)
• M12: 1,817,614 km (0.106 R)
• M13: 2,308,146 km (0.109 R)
• M14: 2,370,378 km (0.115 R)
• M15: 2,433,209 km (0.069 R)
• M16: 2,706,525 km (0.081 R)
• M17: 2,788,804 km (0.093 R)
• M18: 2,905,340 km (0.097 R)
• M19: 3,057,631 km (0.058 R)
• M20: 3,317,482 km (0.035 R)
• M21: 3,803,077 km (0.032 R)
• M22: 4,082,675 km (0.118 R)
• M23: 4,158,372 km (0.063 R)
• M24: 4,253,666 km (0.081 R)
• M25: 4,330,410 km (0.098 R)
• M26: 4,642,022 km (0.083 R)
• M27: 4,701,263 km (0.11 R)
• M28: 4,880,481 km (0.031 R)
• M29: 5,041,747 km (0.097 R)
• M30: 5,163,819 km (0.078 R)
• M31: 5,266,443 km (0.08 R)
• M32: 5,831,774 km (0.109 R)
• M33: 6,526,656 km (0.075 R)
• M34: 7,087,648 km (0.085 R)
• M35: 7,362,609 km (0.028 R)
• M36: 7,617,524 km (0.094 R)
• M37: 7,757,846 km (0.111 R)
• M38: 7,969,976 km (0.092 R)
• M39: 8,231,922 km (0.077 R)
• M40: 8,351,900 km (0.12 R)
• M41: 8,448,241 km (0.1 R)
• M42: 8,569,265 km (0.101 R)
• M43: 8,813,110 km (0.116 R)
• M44: 9,232,881 km (0.086 R)
• M45: 9,887,372 km (0.091 R)
• M46: 10,040,560 km (0.088 R)
• M47: 10,220,227 km (0.083 R)
• M48: 10,478,732 km (0.118 R)
• M49: 10,634,913 km (0.102 R)
• M50: 10,870,679 km (0.034 R)
• M51: 10,949,667 km (0.077 R)
• M52: 11,214,305 km (0.036 R)
• M53: 12,129,695 km (0.117 R)
• M54: 12,679,317 km (0.094 R)
• M55: 12,762,494 km (0.071 R)
• M56: 13,124,969 km (0.09 R)
• M57: 13,321,541 km (0.06 R)
• M58: 13,434,188 km (0.09 R)
• M59: 14,232,442 km (0.089 R)
• M60: 14,347,782 km (0.099 R)
• M61: 15,104,747 km (0.115 R)
• M62: 15,547,258 km (0.073 R)
• M63: 15,844,808 km (0.113 R)
• M64: 15,994,256 km (0.09 R)
• M65: 16,234,211 km (0.114 R)
• M66: 16,992,224 km (0.092 R)
• M67: 17,145,113 km (0.105 R)
• M68: 17,575,955 km (0.025 R)
• M69: 17,885,772 km (0.116 R)
• M70: 18,731,449 km (0.084 R)
• M71: 19,206,871 km (0.093 R)
• M72: 19,430,071 km (0.062 R)
• M73: 20,983,944 km (0.11 R)
• M74: 21,444,705 km (0.091 R)
• M75: 21,709,344 km (0.086 R)
• M76: 21,808,976 km (0.108 R)
• M77: 22,208,701 km (0.05 R)
• M78: 22,309,082 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.1

Radius: 10.1

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 5.72 AU - 6.44 AU

Year: 5560 Days

Day: 5.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 36,710,934 km

• M1: 187,446 km (0.107 R)
• M2: 430,094 km (0.064 R)
• M3: 649,853 km (0.068 R)
• M4: 883,525 km (0.094 R)
• M5: 952,041 km (0.046 R)
• M6: 1,483,562 km (0.109 R)
• M7: 1,722,470 km (0.059 R)
• M8: 1,883,886 km (0.111 R)
• M9: 2,237,386 km (0.105 R)
• M10: 2,381,598 km (0.111 R)
• M11: 2,798,228 km (0.109 R)
• M12: 3,059,276 km (0.115 R)
• M13: 3,148,138 km (0.08 R)
• M14: 3,310,152 km (0.066 R)
• M15: 3,530,510 km (0.047 R)
• M16: 3,642,559 km (0.038 R)
• M17: 3,889,395 km (0.045 R)
• M18: 4,141,767 km (0.12 R)
• M19: 4,459,812 km (0.06 R)
• M20: 4,662,666 km (0.045 R)
• M21: 5,183,117 km (0.092 R)
• M22: 5,310,724 km (0.076 R)
• M23: 5,417,986 km (0.052 R)
• M24: 5,612,763 km (0.073 R)
• M25: 5,987,056 km (0.107 R)
• M26: 6,644,240 km (0.107 R)
• M27: 6,806,404 km (0.098 R)
• M28: 6,946,428 km (0.067 R)
• M29: 7,181,745 km (0.112 R)
• M30: 7,588,202 km (0.116 R)
• M31: 7,684,843 km (0.06 R)
• M32: 7,757,697 km (0.077 R)
• M33: 8,348,309 km (0.098 R)
• M34: 8,624,018 km (0.076 R)
• M35: 9,107,070 km (0.113 R)
• M36: 9,235,724 km (0.062 R)
• M37: 9,520,857 km (0.113 R)
• M38: 9,625,127 km (0.047 R)
• M39: 10,420,240 km (0.116 R)
• M40: 10,798,573 km (0.118 R)
• M41: 11,126,342 km (0.102 R)
• M42: 11,374,375 km (0.119 R)
• M43: 11,652,178 km (0.062 R)
• M44: 12,044,723 km (0.075 R)
• M45: 12,670,491 km (0.066 R)
• M46: 12,785,382 km (0.095 R)
• M47: 12,958,467 km (0.09 R)
• M48: 13,306,731 km (0.085 R)
• M49: 13,423,567 km (0.079 R)
• M50: 13,540,851 km (0.111 R)
• M51: 13,658,286 km (0.073 R)
• M52: 13,776,169 km (0.075 R)
• M53: 14,161,533 km (0.068 R)
• M54: 15,216,497 km (0.117 R)
• M55: 15,399,904 km (0.114 R)
• M56: 15,522,574 km (0.107 R)
• M57: 15,614,876 km (0.101 R)
• M58: 15,738,145 km (0.062 R)
• M59: 16,328,009 km (0.108 R)
• M60: 16,547,170 km (0.113 R)
• M61: 17,051,764 km (0.093 R)
• M62: 17,433,537 km (0.114 R)
• M63: 17,785,990 km (0.081 R)
• M64: 18,108,523 km (0.066 R)
• M65: 18,205,612 km (0.048 R)
• M66: 18,791,886 km (0.083 R)
• M67: 19,087,492 km (0.092 R)
• M68: 19,252,348 km (0.109 R)
• M69: 19,351,382 km (0.094 R)
• M70: 19,483,926 km (0.06 R)
• M71: 19,583,408 km (0.103 R)
• M72: 19,649,830 km (0.046 R)
• M73: 19,916,413 km (0.095 R)
• M74: 20,318,383 km (0.062 R)
• M75: 20,486,830 km (0.086 R)
• M76: 20,960,457 km (0.107 R)
• M77: 21,643,670 km (0.051 R)
• M78: 21,918,930 km (0.102 R)
• M79: 22,368,771 km (0.105 R)
• M80: 22,507,748 km (0.113 R)
• M81: 23,171,962 km (0.116 R)
• M82: 23,488,960 km (0.08 R)
• M83: 23,594,875 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590.5

Radius: 13.9

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 5.12 AU - 7.44 AU

Year: 5836 Days

Day: 6.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 36,710,934 km

• M1: 243,097 km (0.101 R)
• M2: 559,496 km (0.072 R)
• M3: 1,014,124 km (0.079 R)
• M4: 1,189,901 km (0.045 R)
• M5: 1,313,170 km (0.107 R)
• M6: 1,440,927 km (0.119 R)
• M7: 2,354,820 km (0.047 R)
• M8: 2,797,181 km (0.043 R)
• M9: 3,007,067 km (0.088 R)
• M10: 3,135,422 km (0.115 R)
• M11: 3,690,879 km (0.087 R)
• M12: 4,086,266 km (0.077 R)
• M13: 4,253,067 km (0.119 R)
• M14: 4,593,702 km (0.063 R)
• M15: 4,767,385 km (0.114 R)
• M16: 5,198,376 km (0.1 R)
• M17: 5,962,672 km (0.06 R)
• M18: 6,070,831 km (0.114 R)
• M19: 6,234,342 km (0.057 R)
• M20: 6,344,296 km (0.118 R)
• M21: 6,649,775 km (0.086 R)
• M22: 6,875,069 km (0.062 R)
• M23: 7,017,187 km (0.054 R)
• M24: 7,131,630 km (0.082 R)
• M25: 7,420,354 km (0.076 R)
• M26: 7,507,719 km (0.1 R)
• M27: 7,595,383 km (0.111 R)
• M28: 7,771,909 km (0.064 R)
• M29: 8,069,010 km (0.068 R)
• M30: 9,107,518 km (0.097 R)
• M31: 10,809,344 km (0.114 R)
• M32: 11,174,811 km (0.104 R)
• M33: 11,375,721 km (0.035 R)
• M34: 11,611,936 km (0.1 R)
• M35: 12,020,339 km (0.054 R)
• M36: 12,123,262 km (0.112 R)
• M37: 12,329,857 km (0.116 R)
• M38: 12,921,666 km (0.114 R)
• M39: 13,062,288 km (0.103 R)
• M40: 13,168,053 km (0.082 R)
• M41: 13,665,616 km (0.088 R)
• M42: 14,387,126 km (0.077 R)
• M43: 14,496,333 km (0.084 R)
• M44: 14,605,988 km (0.072 R)
• M45: 15,306,256 km (0.045 R)
• M46: 15,829,399 km (0.069 R)
• M47: 16,358,378 km (0.062 R)
• M48: 17,433,837 km (0.043 R)
• M49: 17,940,973 km (0.058 R)
• M50: 18,097,902 km (0.046 R)
• M51: 20,384,655 km (0.079 R)
• M52: 20,589,454 km (0.11 R)
• M53: 21,624,372 km (0.05 R)
• M54: 22,718,531 km (0.104 R)
• M55: 23,101,502 km (0.096 R)
• M56: 23,787,707 km (0.104 R)
• M57: 25,004,536 km (0.115 R)
• M58: 25,092,200 km (0.058 R)
• M59: 25,488,036 km (0.076 R)
• M60: 25,930,397 km (0.098 R)
• M61: 26,375,152 km (0.096 R)
• M62: 26,598,651 km (0.101 R)
• M63: 26,777,720 km (0.115 R)
• M64: 27,407,975 km (0.03 R)
• M65: 27,815,630 km (0.052 R)
• M66: 28,043,018 km (0.101 R)
• M67: 28,134,273 km (0.119 R)
• M68: 28,453,964 km (0.112 R)
• M69: 28,682,998 km (0.043 R)
• M70: 28,866,854 km (0.119 R)
• M71: 28,958,857 km (0.076 R)
• M72: 29,189,237 km (0.058 R)
• M73: 29,791,369 km (0.107 R)
• M74: 29,977,469 km (0.098 R)
• M75: 30,117,343 km (0.106 R)
• M76: 30,210,542 km (0.114 R)
• M77: 30,397,539 km (0.096 R)
• M78: 30,772,581 km (0.054 R)
• M79: 31,054,872 km (0.108 R)
• M80: 31,527,452 km (0.061 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 744.3

Radius: 11.9

Gravity: 5.26 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 5.36 AU - 8.52 AU

Year: 6780 Days

Day: 10.7 Hours

Environment

Temp: -151 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 36,710,934 km

• M1: 149,149 km (0.107 R)
• M2: 364,869 km (0.097 R)
• M3: 497,712 km (0.069 R)
• M4: 732,880 km (0.116 R)
• M5: 834,607 km (0.075 R)
• M6: 973,284 km (0.092 R)
• M7: 1,153,848 km (0.11 R)
• M8: 1,587,084 km (0.028 R)
• M9: 2,196,546 km (0.113 R)
• M10: 2,348,836 km (0.084 R)
• M11: 2,549,896 km (0.109 R)
• M12: 2,733,452 km (0.086 R)
• M13: 2,993,005 km (0.07 R)
• M14: 3,113,730 km (0.06 R)
• M15: 3,587,357 km (0.078 R)
• M16: 3,664,250 km (0.088 R)
• M17: 3,767,772 km (0.048 R)
• M18: 3,872,191 km (0.095 R)
• M19: 4,083,872 km (0.078 R)
• M20: 4,245,288 km (0.088 R)
• M21: 4,911,896 km (0.071 R)
• M22: 5,611,267 km (0.077 R)
• M23: 5,700,876 km (0.057 R)
• M24: 6,156,401 km (0.107 R)
• M25: 6,248,853 km (0.087 R)
• M26: 6,435,252 km (0.108 R)
• M27: 6,623,595 km (0.058 R)
• M28: 6,845,599 km (0.098 R)
• M29: 7,264,473 km (0.081 R)
• M30: 7,691,724 km (0.043 R)
• M31: 7,891,736 km (0.117 R)
• M32: 8,127,204 km (0.117 R)
• M33: 8,778,104 km (0.097 R)
• M34: 9,481,513 km (0.093 R)
• M35: 10,644,337 km (0.104 R)
• M36: 11,242,579 km (0.091 R)
• M37: 11,622,109 km (0.079 R)
• M38: 13,461,714 km (0.107 R)
• M39: 13,783,798 km (0.09 R)
• M40: 14,230,797 km (0.097 R)
• M41: 14,682,732 km (0.085 R)
• M42: 14,889,626 km (0.106 R)
• M43: 15,181,042 km (0.061 R)
• M44: 17,272,869 km (0.087 R)
• M45: 17,798,855 km (0.058 R)
• M46: 18,196,786 km (0.041 R)
• M47: 18,642,438 km (0.119 R)
• M48: 19,772,351 km (0.096 R)
• M49: 19,863,605 km (0.075 R)
• M50: 20,738,454 km (0.077 R)
• M51: 20,970,779 km (0.045 R)
• M52: 22,097,849 km (0.084 R)
• M53: 22,287,689 km (0.09 R)
• M54: 22,764,458 km (0.098 R)
• M55: 23,244,667 km (0.103 R)
• M56: 24,312,796 km (0.083 R)
• M57: 24,655,973 km (0.079 R)
• M58: 24,902,062 km (0.082 R)
• M59: 25,050,163 km (0.087 R)
• M60: 25,198,565 km (0.04 R)
• M61: 25,347,265 km (0.088 R)
• M62: 25,645,413 km (0.068 R)
• M63: 26,597,454 km (0.095 R)
• M64: 27,357,262 km (0.08 R)
• M65: 27,919,002 km (0.076 R)
• M66: 28,329,798 km (0.102 R)
• M67: 28,484,482 km (0.088 R)
• M68: 28,639,316 km (0.073 R)
• M69: 29,626,811 km (0.1 R)
• M70: 29,783,739 km (0.079 R)
• M71: 32,117,167 km (0.106 R)
• M72: 32,601,714 km (0.078 R)
• M73: 32,817,883 km (0.077 R)
• M74: 35,614,915 km (0.1 R)
• M75: 35,781,716 km (0.081 R)
• M76: 35,893,167 km (0.108 R)
• M77: 36,004,767 km (0.059 R)
• M78: 37,521,689 km (0.097 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.9

Radius: 11.3

Gravity: 2.54 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 7.31 AU - 10.37 AU

Year: 9747 Days

Day: 12.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 156 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 36,710,934 km

• M1: 171,738 km (0.066 R)
• M2: 302,786 km (0.065 R)
• M3: 379,979 km (0.089 R)
• M4: 455,376 km (0.069 R)
• M5: 537,206 km (0.104 R)
• M6: 732,581 km (0.095 R)
• M7: 1,046,736 km (0.1 R)
• M8: 1,194,539 km (0.08 R)
• M9: 1,402,630 km (0.068 R)
• M10: 1,834,967 km (0.076 R)
• M11: 2,097,362 km (0.049 R)
• M12: 2,613,924 km (0.088 R)
• M13: 3,145,445 km (0.059 R)
• M14: 3,265,422 km (0.073 R)
• M15: 3,634,779 km (0.098 R)
• M16: 4,017,600 km (0.108 R)
• M17: 4,253,516 km (0.104 R)
• M18: 4,467,142 km (0.12 R)
• M19: 4,877,339 km (0.074 R)
• M20: 5,073,013 km (0.104 R)
• M21: 5,558,907 km (0.108 R)
• M22: 5,792,729 km (0.058 R)
• M23: 6,059,761 km (0.096 R)
• M24: 7,041,721 km (0.083 R)
• M25: 7,136,267 km (0.114 R)
• M26: 7,231,411 km (0.113 R)
• M27: 8,006,777 km (0.028 R)
• M28: 8,204,845 km (0.104 R)
• M29: 8,304,477 km (0.091 R)
• M30: 8,707,045 km (0.084 R)
• M31: 9,150,453 km (0.114 R)
• M32: 11,033,142 km (0.109 R)
• M33: 11,327,551 km (0.078 R)
• M34: 11,401,602 km (0.113 R)
• M35: 11,512,903 km (0.055 R)
• M36: 12,188,337 km (0.111 R)
• M37: 12,645,807 km (0.099 R)
• M38: 12,915,233 km (0.116 R)
• M39: 13,225,649 km (0.119 R)
• M40: 13,695,685 km (0.11 R)
• M41: 14,211,199 km (0.088 R)
• M42: 15,016,634 km (0.087 R)
• M43: 15,424,887 km (0.114 R)
• M44: 15,630,434 km (0.034 R)
• M45: 16,503,487 km (0.085 R)
• M46: 17,692,342 km (0.089 R)
• M47: 19,172,613 km (0.11 R)
• M48: 19,305,156 km (0.115 R)
• M49: 20,017,093 km (0.111 R)
• M50: 21,055,601 km (0.101 R)
• M51: 21,146,706 km (0.086 R)
• M52: 21,420,919 km (0.101 R)
• M53: 21,558,400 km (0.115 R)
• M54: 21,972,786 km (0.071 R)
• M55: 22,111,463 km (0.091 R)
• M56: 22,482,914 km (0.108 R)
• M57: 23,941,194 km (0.074 R)
• M58: 24,609,897 km (0.099 R)
• M59: 24,994,663 km (0.074 R)
• M60: 27,694,007 km (0.111 R)
• M61: 27,793,788 km (0.076 R)
• M62: 27,993,950 km (0.095 R)
• M63: 28,194,561 km (0.095 R)
• M64: 28,345,356 km (0.098 R)
• M65: 29,001,941 km (0.097 R)
• M66: 29,204,945 km (0.052 R)
• M67: 29,459,261 km (0.083 R)
• M68: 30,226,998 km (0.083 R)
• M69: 30,690,751 km (0.081 R)
• M70: 30,794,123 km (0.026 R)
• M71: 31,364,839 km (0.115 R)
• M72: 32,464,084 km (0.114 R)
• M73: 33,256,953 km (0.027 R)
• M74: 34,216,773 km (0.1 R)
• M75: 34,431,296 km (0.082 R)
• M76: 34,753,979 km (0.05 R)
• M77: 35,728,011 km (0.026 R)
• M78: 36,218,392 km (0.112 R)
• M79: 36,601,213 km (0.057 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: 493 - 18,470 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit