🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.97

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 1.07 AU - 1.25 AU

Year: 459 Days

Day: 34.7 Hours

Environment

Temp: 7 °C

Axial Tilt: 8.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.7 AU - 2.72 AU

Year: 1206 Days

Day: 28.2 Hours

Environment

Temp: -76 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,457,456 km

• M1: 76,744 km (0.091 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.22

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 2.34 AU - 3.12 AU

Year: 1656 Days

Day: 22.2 Hours

Environment

Temp: -93 °C

Axial Tilt: 14 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 88,457,456 km

• M1: 100,530 km (0.118 R)
• M2: 707,149 km (0.068 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.99 AU - 3.21 AU

Year: 2004 Days

Day: 25.1 Hours

Environment

Temp: -109 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 5.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.3

Radius: 10.3

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 4.95 AU - 5.93 AU

Year: 4658 Days

Day: 6.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 88,457,456 km

• M1: 254,316 km (0.059 R)
• M2: 359,932 km (0.116 R)
• M3: 424,409 km (0.032 R)
• M4: 626,965 km (0.078 R)
• M5: 698,323 km (0.096 R)
• M6: 942,616 km (0.106 R)
• M7: 1,386,772 km (0.036 R)
• M8: 1,510,938 km (0.069 R)
• M9: 1,595,910 km (0.086 R)
• M10: 1,860,549 km (0.11 R)
• M11: 2,807,054 km (0.102 R)
• M12: 2,894,868 km (0.069 R)
• M13: 3,237,148 km (0.08 R)
• M14: 3,310,900 km (0.058 R)
• M15: 3,441,349 km (0.115 R)
• M16: 3,573,444 km (0.096 R)
• M17: 3,823,422 km (0.059 R)
• M18: 4,179,017 km (0.082 R)
• M19: 4,320,087 km (0.098 R)
• M20: 4,837,247 km (0.03 R)
• M21: 5,330,471 km (0.118 R)
• M22: 5,527,941 km (0.113 R)
• M23: 5,594,212 km (0.077 R)
• M24: 5,817,412 km (0.047 R)
• M25: 5,907,470 km (0.04 R)
• M26: 6,043,455 km (0.112 R)
• M27: 6,180,486 km (0.084 R)
• M28: 6,434,354 km (0.039 R)
• M29: 6,621,202 km (0.107 R)
• M30: 6,857,267 km (0.12 R)
• M31: 6,976,497 km (0.063 R)
• M32: 7,096,175 km (0.069 R)
• M33: 7,533,150 km (0.101 R)
• M34: 8,104,165 km (0.036 R)
• M35: 8,458,712 km (0.094 R)
• M36: 8,999,957 km (0.084 R)
• M37: 9,579,051 km (0.072 R)
• M38: 9,685,565 km (0.1 R)
• M39: 9,899,938 km (0.052 R)
• M40: 10,061,803 km (0.08 R)
• M41: 10,143,035 km (0.063 R)
• M42: 10,580,010 km (0.086 R)
• M43: 10,662,588 km (0.089 R)
• M44: 10,911,818 km (0.034 R)
• M45: 11,078,919 km (0.105 R)
• M46: 11,387,689 km (0.034 R)
• M47: 11,727,725 km (0.09 R)
• M48: 11,927,588 km (0.066 R)
• M49: 12,128,647 km (0.084 R)
• M50: 12,273,009 km (0.11 R)
• M51: 12,476,014 km (0.091 R)
• M52: 12,563,229 km (0.114 R)
• M53: 12,680,065 km (0.106 R)
• M54: 15,090,087 km (0.074 R)
• M55: 15,276,486 km (0.11 R)
• M56: 15,432,367 km (0.091 R)
• M57: 15,777,190 km (0.106 R)
• M58: 16,283,429 km (0.111 R)
• M59: 17,181,914 km (0.111 R)
• M60: 17,441,616 km (0.109 R)
• M61: 17,539,453 km (0.104 R)
• M62: 17,768,188 km (0.117 R)
• M63: 19,262,072 km (0.039 R)
• M64: 19,498,138 km (0.065 R)
• M65: 20,109,395 km (0.101 R)
• M66: 20,417,417 km (0.071 R)
• M67: 20,796,049 km (0.093 R)
• M68: 21,072,805 km (0.109 R)
• M69: 21,211,632 km (0.12 R)
• M70: 21,316,051 km (0.103 R)
• M71: 21,420,470 km (0.104 R)
• M72: 22,016,019 km (0.049 R)
• M73: 22,546,045 km (0.046 R)
• M74: 23,080,109 km (0.05 R)
• M75: 23,330,835 km (0.114 R)
• M76: 23,438,546 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.4

Radius: 10.5

Gravity: 5.21 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 5.01 AU - 8.03 AU

Year: 6111 Days

Day: 10.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 88,457,456 km

• M1: 190,139 km (0.104 R)
• M2: 324,927 km (0.075 R)
• M3: 493,075 km (0.104 R)
• M4: 583,432 km (0.114 R)
• M5: 680,371 km (0.095 R)
• M6: 1,094,907 km (0.093 R)
• M7: 1,378,544 km (0.082 R)
• M8: 1,828,834 km (0.103 R)
• M9: 1,939,237 km (0.091 R)
• M10: 2,303,508 km (0.057 R)
• M11: 2,544,809 km (0.105 R)
• M12: 2,647,882 km (0.083 R)
• M13: 2,836,824 km (0.102 R)
• M14: 3,613,836 km (0.061 R)
• M15: 3,847,657 km (0.052 R)
• M16: 4,207,590 km (0.067 R)
• M17: 4,453,529 km (0.118 R)
• M18: 4,755,118 km (0.067 R)
• M19: 4,857,144 km (0.09 R)
• M20: 4,934,187 km (0.031 R)
• M21: 5,246,248 km (0.093 R)
• M22: 5,862,441 km (0.097 R)
• M23: 5,944,421 km (0.03 R)
• M24: 6,026,849 km (0.055 R)
• M25: 6,444,975 km (0.045 R)
• M26: 6,614,919 km (0.096 R)
• M27: 7,191,918 km (0.098 R)
• M28: 7,456,855 km (0.067 R)
• M29: 7,966,236 km (0.089 R)
• M30: 8,240,449 km (0.111 R)
• M31: 9,240,361 km (0.102 R)
• M32: 9,400,132 km (0.115 R)
• M33: 9,819,754 km (0.086 R)
• M34: 11,216,998 km (0.095 R)
• M35: 11,593,087 km (0.099 R)
• M36: 11,834,688 km (0.068 R)
• M37: 12,463,447 km (0.08 R)
• M38: 12,569,363 km (0.067 R)
• M39: 12,888,754 km (0.096 R)
• M40: 14,119,346 km (0.045 R)
• M41: 14,266,551 km (0.087 R)
• M42: 14,674,205 km (0.11 R)
• M43: 14,785,954 km (0.097 R)
• M44: 15,010,501 km (0.032 R)
• M45: 15,425,036 km (0.088 R)
• M46: 15,576,729 km (0.088 R)
• M47: 16,188,434 km (0.11 R)
• M48: 16,691,233 km (0.09 R)
• M49: 16,964,099 km (0.115 R)
• M50: 17,990,490 km (0.111 R)
• M51: 18,430,757 km (0.052 R)
• M52: 18,511,241 km (0.039 R)
• M53: 19,281,221 km (0.095 R)
• M54: 19,814,088 km (0.068 R)
• M55: 20,643,459 km (0.049 R)
• M56: 21,146,407 km (0.034 R)
• M57: 21,696,030 km (0.117 R)
• M58: 22,121,935 km (0.039 R)
• M59: 22,293,075 km (0.098 R)
• M60: 22,636,551 km (0.071 R)
• M61: 22,722,869 km (0.1 R)
• M62: 25,403,214 km (0.052 R)
• M63: 27,489,656 km (0.115 R)
• M64: 28,553,446 km (0.049 R)
• M65: 28,739,845 km (0.099 R)
• M66: 29,395,383 km (0.104 R)
• M67: 29,961,162 km (0.089 R)
• M68: 30,197,976 km (0.094 R)
• M69: 31,439,489 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 29.1

Radius: 7.5

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 13.07 AU - 20.89 AU

Year: 25685 Days

Day: 19 Hours

Environment

Temp: -202 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 88,457,456 km

• M1: 255,812 km (0.064 R)
• M2: 362,476 km (0.06 R)
• M3: 587,770 km (0.091 R)
• M4: 735,573 km (0.086 R)
• M5: 882,029 km (0.078 R)
• M6: 1,082,191 km (0.113 R)
• M7: 1,312,871 km (0.058 R)
• M8: 1,610,271 km (0.093 R)
• M9: 1,766,751 km (0.085 R)
• M10: 2,020,319 km (0.071 R)
• M11: 2,932,567 km (0.077 R)
• M12: 2,996,146 km (0.117 R)
• M13: 3,320,474 km (0.08 R)
• M14: 3,408,887 km (0.051 R)
• M15: 4,408,051 km (0.086 R)
• M16: 4,801,643 km (0.113 R)
• M17: 4,952,138 km (0.063 R)
• M18: 5,309,528 km (0.106 R)
• M19: 5,361,288 km (0.101 R)
• M20: 6,320,959 km (0.109 R)
• M21: 6,961,537 km (0.102 R)
• M22: 8,697,321 km (0.098 R)
• M23: 9,471,340 km (0.106 R)
• M24: 9,565,587 km (0.071 R)
• M25: 9,660,283 km (0.107 R)
• M26: 9,882,435 km (0.069 R)
• M27: 10,428,916 km (0.095 R)
• M28: 10,722,128 km (0.032 R)
• M29: 10,820,564 km (0.103 R)
• M30: 11,183,787 km (0.036 R)
• M31: 11,283,569 km (0.114 R)
• M32: 11,383,650 km (0.096 R)
• M33: 11,685,538 km (0.078 R)
• M34: 12,434,725 km (0.074 R)
• M35: 14,592,076 km (0.11 R)
• M36: 14,993,297 km (0.047 R)
• M37: 15,583,461 km (0.106 R)
• M38: 16,369,298 km (0.081 R)
• M39: 16,824,225 km (0.076 R)
• M40: 20,042,225 km (0.047 R)
• M41: 20,447,486 km (0.113 R)
• M42: 21,762,152 km (0.099 R)
• M43: 22,136,895 km (0.073 R)
• M44: 23,742,229 km (0.098 R)
• M45: 24,084,958 km (0.097 R)
• M46: 24,343,014 km (0.111 R)
• M47: 24,558,884 km (0.037 R)
• M48: 25,166,551 km (0.11 R)
• M49: 26,929,711 km (0.076 R)
• M50: 27,019,021 km (0.051 R)
• M51: 27,331,980 km (0.074 R)
• M52: 28,142,351 km (0.076 R)
• M53: 28,278,186 km (0.047 R)
• M54: 28,823,620 km (0.078 R)
• M55: 29,326,718 km (0.102 R)
• M56: 29,694,429 km (0.037 R)
• M57: 29,786,582 km (0.083 R)
• M58: 31,274,183 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 814.6

Radius: 3.1

Gravity: 84.77 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 16.41 AU - 17.81 AU

Year: 25981 Days

Day: 23.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (98)

Outer Limit: 88,457,456 km

• M1: 62,831 km (0.103 R)
• M2: 330,462 km (0.094 R)
• M3: 693,835 km (0.111 R)
• M4: 985,102 km (0.097 R)
• M5: 1,591,871 km (0.086 R)
• M6: 3,026,814 km (0.11 R)
• M7: 3,349,347 km (0.047 R)
• M8: 3,538,588 km (0.102 R)
• M9: 3,586,310 km (0.087 R)
• M10: 5,500,714 km (0.089 R)
• M11: 6,063,650 km (0.044 R)
• M12: 6,409,970 km (0.025 R)
• M13: 7,426,038 km (0.115 R)
• M14: 7,487,224 km (0.046 R)
• M15: 7,983,739 km (0.105 R)
• M16: 8,235,961 km (0.1 R)
• M17: 8,299,391 km (0.049 R)
• M18: 8,812,960 km (0.086 R)
• M19: 9,008,185 km (0.074 R)
• M20: 9,073,560 km (0.091 R)
• M21: 9,139,233 km (0.074 R)
• M22: 10,551,587 km (0.105 R)
• M23: 10,897,756 km (0.061 R)
• M24: 11,459,346 km (0.055 R)
• M25: 12,610,502 km (0.118 R)
• M26: 13,722,762 km (0.117 R)
• M27: 14,481,523 km (0.12 R)
• M28: 15,175,956 km (0.109 R)
• M29: 16,039,285 km (0.119 R)
• M30: 16,596,986 km (0.112 R)
• M31: 17,731,237 km (0.104 R)
• M32: 17,813,217 km (0.113 R)
• M33: 18,890,322 km (0.078 R)
• M34: 20,073,491 km (0.027 R)
• M35: 21,455,027 km (0.049 R)
• M36: 21,805,086 km (0.1 R)
• M37: 23,403,839 km (0.062 R)
• M38: 23,764,220 km (0.095 R)
• M39: 24,673,326 km (0.068 R)
• M40: 25,131,993 km (0.117 R)
• M41: 25,779,004 km (0.113 R)
• M42: 28,901,710 km (0.069 R)
• M43: 28,998,201 km (0.054 R)
• M44: 30,066,629 km (0.112 R)
• M45: 33,651,742 km (0.104 R)
• M46: 35,391,116 km (0.053 R)
• M47: 35,700,933 km (0.114 R)
• M48: 37,579,584 km (0.102 R)
• M49: 38,212,831 km (0.043 R)
• M50: 38,956,183 km (0.047 R)
• M51: 41,976,714 km (0.074 R)
• M52: 42,633,598 km (0.103 R)
• M53: 43,514,879 km (0.088 R)
• M54: 43,957,838 km (0.109 R)
• M55: 46,081,829 km (0.119 R)
• M56: 47,440,477 km (0.092 R)
• M57: 48,124,588 km (0.092 R)
• M58: 48,239,030 km (0.1 R)
• M59: 48,697,248 km (0.118 R)
• M60: 50,080,879 km (0.09 R)
• M61: 50,428,844 km (0.103 R)
• M62: 51,945,766 km (0.059 R)
• M63: 52,768,704 km (0.112 R)
• M64: 54,546,675 km (0.069 R)
• M65: 56,585,395 km (0.114 R)
• M66: 57,917,713 km (0.119 R)
• M67: 59,383,024 km (0.114 R)
• M68: 60,120,243 km (0.095 R)
• M69: 60,860,453 km (0.05 R)
• M70: 61,976,453 km (0.092 R)
• M71: 62,349,849 km (0.044 R)
• M72: 62,849,057 km (0.054 R)
• M73: 63,099,185 km (0.08 R)
• M74: 65,491,255 km (0.073 R)
• M75: 66,889,696 km (0.095 R)
• M76: 67,272,816 km (0.042 R)
• M77: 71,273,961 km (0.049 R)
• M78: 71,926,507 km (0.079 R)
• M79: 72,843,392 km (0.097 R)
• M80: 73,500,725 km (0.054 R)
• M81: 75,086,163 km (0.064 R)
• M82: 76,149,355 km (0.064 R)
• M83: 78,156,360 km (0.117 R)
• M84: 78,425,337 km (0.072 R)
• M85: 78,559,826 km (0.066 R)
• M86: 78,829,252 km (0.093 R)
• M87: 82,769,360 km (0.089 R)
• M88: 83,180,754 km (0.047 R)
• M89: 83,455,267 km (0.084 R)
• M90: 83,592,597 km (0.058 R)
• M91: 83,867,558 km (0.114 R)
• M92: 84,832,465 km (0.116 R)
• M93: 85,800,961 km (0.057 R)
• M94: 86,912,473 km (0.08 R)
• M95: 89,149,410 km (0.078 R)
• M96: 89,711,599 km (0.073 R)
• M97: 91,830,354 km (0.112 R)
• M98: 95,111,035 km (0.101 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 623.5

Radius: 5.1

Gravity: 23.97 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 12.96 AU - 21.52 AU

Year: 26277 Days

Day: 21.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 88,457,456 km

• M1: 71,358 km (0.077 R)
• M2: 165,455 km (0.066 R)
• M3: 276,906 km (0.049 R)
• M4: 522,695 km (0.084 R)
• M5: 1,022,202 km (0.084 R)
• M6: 1,330,224 km (0.109 R)
• M7: 1,362,537 km (0.072 R)
• M8: 2,253,991 km (0.06 R)
• M9: 2,292,737 km (0.105 R)
• M10: 2,570,391 km (0.073 R)
• M11: 2,692,612 km (0.105 R)
• M12: 4,206,692 km (0.088 R)
• M13: 4,254,563 km (0.102 R)
• M14: 4,594,899 km (0.111 R)
• M15: 4,893,646 km (0.115 R)
• M16: 5,198,676 km (0.051 R)
• M17: 5,250,137 km (0.086 R)
• M18: 6,041,809 km (0.077 R)
• M19: 6,204,572 km (0.119 R)
• M20: 6,368,830 km (0.113 R)
• M21: 6,645,736 km (0.077 R)
• M22: 6,813,884 km (0.1 R)
• M23: 7,040,076 km (0.057 R)
• M24: 7,558,133 km (0.111 R)
• M25: 7,969,677 km (0.071 R)
• M26: 8,630,750 km (0.062 R)
• M27: 10,651,817 km (0.066 R)
• M28: 10,914,361 km (0.081 R)
• M29: 10,980,334 km (0.103 R)
• M30: 11,312,142 km (0.083 R)
• M31: 12,327,164 km (0.045 R)
• M32: 13,089,963 km (0.117 R)
• M33: 13,583,337 km (0.066 R)
• M34: 13,867,872 km (0.078 R)
• M35: 14,733,595 km (0.032 R)
• M36: 14,806,449 km (0.106 R)
• M37: 15,394,219 km (0.082 R)
• M38: 16,440,956 km (0.111 R)
• M39: 16,668,195 km (0.093 R)
• M40: 16,896,631 km (0.104 R)
• M41: 16,972,926 km (0.055 R)
• M42: 17,510,431 km (0.116 R)
• M43: 18,209,950 km (0.059 R)
• M44: 18,602,346 km (0.097 R)
• M45: 18,760,171 km (0.117 R)
• M46: 18,918,296 km (0.106 R)
• M47: 18,997,583 km (0.053 R)
• M48: 19,077,020 km (0.116 R)
• M49: 19,796,436 km (0.112 R)
• M50: 24,123,554 km (0.079 R)
• M51: 25,950,443 km (0.1 R)
• M52: 26,924,924 km (0.104 R)
• M53: 27,551,290 km (0.086 R)
• M54: 27,731,256 km (0.071 R)
• M55: 28,092,087 km (0.095 R)
• M56: 28,454,562 km (0.08 R)
• M57: 30,847,829 km (0.119 R)
• M58: 32,827,458 km (0.093 R)
• M59: 34,459,870 km (0.088 R)
• M60: 34,847,777 km (0.104 R)
• M61: 36,809,005 km (0.111 R)
• M62: 37,404,404 km (0.109 R)
• M63: 38,203,107 km (0.083 R)
• M64: 38,604,628 km (0.107 R)
• M65: 40,326,350 km (0.114 R)
• M66: 41,556,793 km (0.109 R)
• M67: 42,799,502 km (0.057 R)
• M68: 43,112,012 km (0.107 R)
• M69: 43,634,707 km (0.094 R)
• M70: 44,159,347 km (0.103 R)
• M71: 44,264,664 km (0.067 R)
• M72: 44,686,230 km (0.091 R)
• M73: 45,639,767 km (0.111 R)
• M74: 47,351,466 km (0.085 R)
• M75: 50,506,934 km (0.106 R)
• M76: 51,499,965 km (0.042 R)
• M77: 52,610,878 km (0.108 R)
• M78: 54,517,503 km (0.047 R)
• M79: 58,052,052 km (0.058 R)
• M80: 58,167,392 km (0.115 R)
• M81: 59,672,496 km (0.11 R)
• M82: 60,371,567 km (0.106 R)
• M83: 60,488,253 km (0.061 R)
• M84: 62,366,604 km (0.092 R)
• M85: 66,541,881 km (0.095 R)
• M86: 68,358,747 km (0.11 R)
• M87: 70,437,559 km (0.106 R)
• M88: 71,793,514 km (0.04 R)
• M89: 72,288,833 km (0.063 R)
• M90: 73,033,830 km (0.119 R)
• M91: 75,535,555 km (0.072 R)
• M92: 76,417,734 km (0.096 R)
• M93: 77,430,212 km (0.081 R)
• M94: 79,468,334 km (0.114 R)
• M95: 81,137,248 km (0.111 R)
• M96: 81,524,108 km (0.048 R)
• M97: 86,212,954 km (0.047 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 191 - 17,598 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit