🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.64 AU - 0.66 AU

Year: 192 Days

Day: 29.5 Hours

Environment

Temp: 170 °C

Axial Tilt: 37.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 25,483,408 km

• M1: 51,162 km (0.042 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.15

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.59 AU - 0.97 AU

Year: 253 Days

Day: 30.1 Hours

Environment

Temp: 154 °C

Axial Tilt: 7.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.07 AU - 1.51 AU

Year: 538 Days

Day: 33.8 Hours

Environment

Temp: -20 °C

Axial Tilt: 43.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 25,483,408 km

• M1: 225,444 km (0.077 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.82 AU - 2.7 AU

Year: 1247 Days

Day: 39.1 Hours

Environment

Temp: -81 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.76 AU - 4.42 AU

Year: 2497 Days

Day: 39.4 Hours

Environment

Temp: -119 °C

Axial Tilt: 23.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.27 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.3

Radius: 8.3

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 3.81 AU - 6.07 AU

Year: 4031 Days

Day: 9.3 Hours

Environment

Temp: -144 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 25,483,408 km

• M1: 106,962 km (0.07 R)
• M2: 176,675 km (0.111 R)
• M3: 283,338 km (0.115 R)
• M4: 493,823 km (0.104 R)
• M5: 556,504 km (0.086 R)
• M6: 731,683 km (0.109 R)
• M7: 783,594 km (0.102 R)
• M8: 869,463 km (0.098 R)
• M9: 1,170,903 km (0.119 R)
• M10: 1,295,518 km (0.119 R)
• M11: 1,424,621 km (0.087 R)
• M12: 1,880,595 km (0.085 R)
• M13: 1,997,730 km (0.102 R)
• M14: 2,072,230 km (0.039 R)
• M15: 2,884,397 km (0.092 R)
• M16: 3,123,304 km (0.082 R)
• M17: 3,711,374 km (0.104 R)
• M18: 3,766,575 km (0.112 R)
• M19: 4,046,622 km (0.07 R)
• M20: 4,256,359 km (0.105 R)
• M21: 4,686,452 km (0.099 R)
• M22: 4,786,234 km (0.034 R)
• M23: 5,008,088 km (0.095 R)
• M24: 5,378,343 km (0.097 R)
• M25: 5,545,743 km (0.092 R)
• M26: 6,475,194 km (0.11 R)
• M27: 6,541,915 km (0.115 R)
• M28: 6,743,124 km (0.104 R)
• M29: 6,923,838 km (0.038 R)
• M30: 7,290,054 km (0.105 R)
• M31: 7,382,505 km (0.068 R)
• M32: 7,592,092 km (0.081 R)
• M33: 8,377,630 km (0.097 R)
• M34: 8,523,189 km (0.09 R)
• M35: 8,596,342 km (0.108 R)
• M36: 8,915,584 km (0.116 R)
• M37: 9,088,968 km (0.097 R)
• M38: 9,263,699 km (0.114 R)
• M39: 9,565,587 km (0.077 R)
• M40: 9,998,972 km (0.098 R)
• M41: 10,205,118 km (0.099 R)
• M42: 10,308,789 km (0.042 R)
• M43: 10,621,748 km (0.071 R)
• M44: 10,726,766 km (0.086 R)
• M45: 11,017,285 km (0.113 R)
• M46: 11,283,719 km (0.078 R)
• M47: 11,417,758 km (0.05 R)
• M48: 11,579,174 km (0.106 R)
• M49: 11,660,256 km (0.086 R)
• M50: 11,768,565 km (0.092 R)
• M51: 11,822,869 km (0.064 R)
• M52: 11,986,230 km (0.1 R)
• M53: 12,095,586 km (0.114 R)
• M54: 12,508,626 km (0.071 R)
• M55: 12,564,127 km (0.066 R)
• M56: 13,292,070 km (0.112 R)
• M57: 13,348,618 km (0.09 R)
• M58: 13,575,708 km (0.069 R)
• M59: 14,293,478 km (0.073 R)
• M60: 14,380,395 km (0.076 R)
• M61: 15,171,019 km (0.107 R)
• M62: 15,318,972 km (0.12 R)
• M63: 15,586,602 km (0.039 R)
• M64: 15,975,706 km (0.039 R)
• M65: 16,216,858 km (0.112 R)
• M66: 16,277,296 km (0.112 R)
• M67: 16,489,575 km (0.086 R)
• M68: 16,672,234 km (0.036 R)
• M69: 16,855,491 km (0.099 R)
• M70: 16,978,012 km (0.058 R)
• M71: 17,719,718 km (0.107 R)
• M72: 17,969,247 km (0.027 R)
• M73: 18,063,195 km (0.112 R)
• M74: 18,282,954 km (0.109 R)
• M75: 18,377,350 km (0.077 R)
• M76: 18,535,176 km (0.111 R)
• M77: 19,684,237 km (0.1 R)
• M78: 19,877,967 km (0.09 R)
• M79: 20,955,071 km (0.065 R)
• M80: 21,053,956 km (0.098 R)
• M81: 21,417,628 km (0.094 R)
• M82: 22,084,386 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.1

Radius: 11.8

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 5.05 AU - 5.47 AU

Year: 4428 Days

Day: 9.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 25,483,408 km

• M1: 187,895 km (0.091 R)
• M2: 378,782 km (0.087 R)
• M3: 618,587 km (0.1 R)
• M4: 882,179 km (0.119 R)
• M5: 1,020,706 km (0.113 R)
• M6: 1,107,623 km (0.12 R)
• M7: 1,181,973 km (0.082 R)
• M8: 1,497,774 km (0.118 R)
• M9: 1,893,909 km (0.079 R)
• M10: 2,284,060 km (0.101 R)
• M11: 2,598,515 km (0.098 R)
• M12: 2,699,643 km (0.069 R)
• M13: 2,843,556 km (0.038 R)
• M14: 3,096,377 km (0.06 R)
• M15: 3,182,246 km (0.104 R)
• M16: 3,444,790 km (0.095 R)
• M17: 3,646,448 km (0.119 R)
• M18: 4,038,095 km (0.118 R)
• M19: 4,155,978 km (0.119 R)
• M20: 4,346,865 km (0.119 R)
• M21: 4,467,591 km (0.107 R)
• M22: 4,687,948 km (0.072 R)
• M23: 4,886,764 km (0.086 R)
• M24: 5,241,610 km (0.112 R)
• M25: 5,422,175 km (0.109 R)
• M26: 5,500,265 km (0.062 R)
• M27: 5,657,343 km (0.113 R)
• M28: 6,056,919 km (0.1 R)
• M29: 6,715,299 km (0.12 R)
• M30: 6,855,322 km (0.111 R)
• M31: 7,281,377 km (0.034 R)
• M32: 7,483,185 km (0.091 R)
• M33: 7,980,897 km (0.066 R)
• M34: 8,308,815 km (0.084 R)
• M35: 9,163,169 km (0.1 R)
• M36: 9,822,447 km (0.098 R)
• M37: 10,173,852 km (0.041 R)
• M38: 10,464,521 km (0.12 R)
• M39: 10,562,058 km (0.067 R)
• M40: 10,889,229 km (0.118 R)
• M41: 11,386,193 km (0.11 R)
• M42: 11,620,613 km (0.096 R)
• M43: 11,789,210 km (0.091 R)
• M44: 11,992,364 km (0.04 R)
• M45: 12,162,756 km (0.12 R)
• M46: 12,299,488 km (0.084 R)
• M47: 12,643,713 km (0.08 R)
• M48: 12,782,390 km (0.103 R)
• M49: 13,201,264 km (0.115 R)
• M50: 14,231,993 km (0.046 R)
• M51: 14,593,422 km (0.109 R)
• M52: 14,848,337 km (0.091 R)
• M53: 15,067,946 km (0.099 R)
• M54: 15,436,256 km (0.112 R)
• M55: 16,144,453 km (0.077 R)
• M56: 16,939,565 km (0.12 R)
• M57: 17,747,394 km (0.061 R)
• M58: 18,175,543 km (0.086 R)
• M59: 18,607,133 km (0.06 R)
• M60: 19,400,450 km (0.047 R)
• M61: 19,761,131 km (0.118 R)
• M62: 19,922,098 km (0.091 R)
• M63: 21,102,276 km (0.098 R)
• M64: 21,266,833 km (0.091 R)
• M65: 21,721,611 km (0.1 R)
• M66: 22,263,305 km (0.095 R)
• M67: 22,725,113 km (0.074 R)
• M68: 23,147,578 km (0.071 R)
• M69: 23,274,886 km (0.076 R)
• M70: 24,430,828 km (0.089 R)
• M71: 24,603,614 km (0.09 R)
• M72: 25,037,597 km (0.094 R)
• M73: 25,868,913 km (0.095 R)
• M74: 26,001,008 km (0.088 R)
• M75: 26,089,121 km (0.067 R)
• M76: 26,664,773 km (0.071 R)
• M77: 27,110,575 km (0.077 R)
• M78: 27,468,862 km (0.091 R)
• M79: 27,873,823 km (0.077 R)
• M80: 28,054,388 km (0.042 R)
• M81: 28,917,717 km (0.097 R)
• M82: 29,559,492 km (0.083 R)
• M83: 29,789,873 km (0.119 R)
• M84: 30,997,128 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 762.6

Radius: 13

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 4.83 AU - 6.55 AU

Year: 4982 Days

Day: 14.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 25,483,408 km

• M1: 218,712 km (0.113 R)
• M2: 400,922 km (0.119 R)
• M3: 551,418 km (0.066 R)
• M4: 712,385 km (0.12 R)
• M5: 812,466 km (0.079 R)
• M6: 1,173,446 km (0.095 R)
• M7: 1,264,102 km (0.057 R)
• M8: 1,702,274 km (0.078 R)
• M9: 1,788,742 km (0.107 R)
• M10: 1,912,310 km (0.042 R)
• M11: 2,573,383 km (0.101 R)
• M12: 2,774,741 km (0.089 R)
• M13: 2,918,954 km (0.078 R)
• M14: 3,108,195 km (0.085 R)
• M15: 3,279,784 km (0.115 R)
• M16: 3,654,975 km (0.039 R)
• M17: 3,790,810 km (0.054 R)
• M18: 3,974,516 km (0.113 R)
• M19: 4,114,390 km (0.114 R)
• M20: 4,446,946 km (0.11 R)
• M21: 4,640,975 km (0.096 R)
• M22: 5,239,965 km (0.092 R)
• M23: 6,870,731 km (0.104 R)
• M24: 7,011,054 km (0.091 R)
• M25: 7,960,551 km (0.036 R)
• M26: 8,585,871 km (0.087 R)
• M27: 8,828,369 km (0.102 R)
• M28: 9,072,961 km (0.062 R)
• M29: 10,330,032 km (0.109 R)
• M30: 10,490,999 km (0.103 R)
• M31: 10,848,090 km (0.08 R)
• M32: 10,978,838 km (0.077 R)
• M33: 11,275,192 km (0.048 R)
• M34: 11,441,096 km (0.104 R)
• M35: 11,943,296 km (0.09 R)
• M36: 12,624,265 km (0.12 R)
• M37: 12,761,895 km (0.067 R)
• M38: 12,934,830 km (0.084 R)
• M39: 13,247,789 km (0.078 R)
• M40: 13,387,813 km (0.075 R)
• M41: 13,846,031 km (0.085 R)
• M42: 14,166,320 km (0.074 R)
• M43: 14,669,567 km (0.097 R)
• M44: 14,886,933 km (0.115 R)
• M45: 15,915,717 km (0.117 R)
• M46: 16,251,415 km (0.082 R)
• M47: 16,815,848 km (0.105 R)
• M48: 17,157,679 km (0.11 R)
• M49: 17,425,160 km (0.064 R)
• M50: 17,540,201 km (0.027 R)
• M51: 17,809,627 km (0.078 R)
• M52: 18,469,652 km (0.092 R)
• M53: 18,861,748 km (0.079 R)
• M54: 19,019,275 km (0.12 R)
• M55: 19,296,181 km (0.072 R)
• M56: 19,974,009 km (0.093 R)
• M57: 20,619,075 km (0.092 R)
• M58: 20,822,228 km (0.113 R)
• M59: 21,066,671 km (0.08 R)
• M60: 21,148,352 km (0.053 R)
• M61: 21,476,270 km (0.084 R)
• M62: 21,599,689 km (0.064 R)
• M63: 21,723,406 km (0.103 R)
• M64: 21,888,562 km (0.093 R)
• M65: 22,303,397 km (0.053 R)
• M66: 22,386,723 km (0.096 R)
• M67: 23,946,281 km (0.104 R)
• M68: 24,933,328 km (0.113 R)
• M69: 25,149,796 km (0.035 R)
• M70: 26,284,795 km (0.113 R)
• M71: 26,593,265 km (0.085 R)
• M72: 26,770,090 km (0.112 R)
• M73: 27,169,217 km (0.103 R)
• M74: 27,973,605 km (0.052 R)
• M75: 28,108,542 km (0.1 R)
• M76: 28,649,937 km (0.047 R)
• M77: 29,789,125 km (0.043 R)
• M78: 30,018,758 km (0.096 R)
• M79: 30,202,763 km (0.053 R)
• M80: 30,572,120 km (0.028 R)
• M81: 30,803,847 km (0.088 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 106.5

Radius: 14.2

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 5.43 AU - 6.15 AU

Year: 5114 Days

Day: 12.6 Hours

Environment

Temp: -156 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 25,483,408 km

• M1: 219,310 km (0.095 R)
• M2: 311,912 km (0.098 R)
• M3: 428,299 km (0.098 R)
• M4: 518,207 km (0.105 R)
• M5: 654,042 km (0.073 R)
• M6: 820,844 km (0.039 R)
• M7: 923,318 km (0.112 R)
• M8: 1,114,504 km (0.112 R)
• M9: 1,289,534 km (0.113 R)
• M10: 1,723,517 km (0.109 R)
• M11: 1,847,833 km (0.112 R)
• M12: 2,301,114 km (0.094 R)
• M13: 2,553,935 km (0.083 R)
• M14: 3,018,436 km (0.081 R)
• M15: 3,169,979 km (0.075 R)
• M16: 3,567,610 km (0.106 R)
• M17: 3,728,278 km (0.045 R)
• M18: 3,981,398 km (0.095 R)
• M19: 4,087,313 km (0.119 R)
• M20: 4,178,717 km (0.079 R)
• M21: 4,286,428 km (0.102 R)
• M22: 4,410,744 km (0.099 R)
• M23: 4,887,362 km (0.057 R)
• M24: 5,247,594 km (0.051 R)
• M25: 5,430,852 km (0.108 R)
• M26: 5,769,840 km (0.071 R)
• M27: 6,080,854 km (0.115 R)
• M28: 6,220,878 km (0.091 R)
• M29: 6,326,644 km (0.064 R)
• M30: 6,450,660 km (0.065 R)
• M31: 6,846,197 km (0.077 R)
• M32: 6,973,654 km (0.063 R)
• M33: 7,102,009 km (0.07 R)
• M34: 7,398,213 km (0.03 R)
• M35: 7,491,562 km (0.093 R)
• M36: 7,604,209 km (0.112 R)
• M37: 7,698,606 km (0.113 R)
• M38: 8,098,930 km (0.105 R)
• M39: 8,369,552 km (0.081 R)
• M40: 8,900,176 km (0.045 R)
• M41: 9,059,497 km (0.113 R)
• M42: 9,932,251 km (0.083 R)
• M43: 10,514,935 km (0.115 R)
• M44: 10,831,783 km (0.115 R)
• M45: 11,388,437 km (0.117 R)
• M46: 11,648,438 km (0.066 R)
• M47: 12,020,189 km (0.079 R)
• M48: 12,285,127 km (0.066 R)
• M49: 12,820,538 km (0.102 R)
• M50: 12,933,035 km (0.118 R)
• M51: 13,136,488 km (0.104 R)
• M52: 13,983,661 km (0.069 R)
• M53: 14,919,545 km (0.095 R)
• M54: 15,085,449 km (0.105 R)
• M55: 15,323,459 km (0.113 R)
• M56: 15,803,369 km (0.11 R)
• M57: 15,972,415 km (0.104 R)
• M58: 16,117,824 km (0.097 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359

Radius: 8.8

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 4.54 AU - 7.4 AU

Year: 5355 Days

Day: 12.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 25,483,408 km

• M1: 113,545 km (0.114 R)
• M2: 209,736 km (0.061 R)
• M3: 368,011 km (0.111 R)
• M4: 436,676 km (0.083 R)
• M5: 510,727 km (0.025 R)
• M6: 589,416 km (0.08 R)
• M7: 683,513 km (0.096 R)
• M8: 1,035,217 km (0.071 R)
• M9: 1,098,946 km (0.119 R)
• M10: 1,271,432 km (0.049 R)
• M11: 1,495,979 km (0.077 R)
• M12: 1,810,134 km (0.117 R)
• M13: 2,095,866 km (0.082 R)
• M14: 2,294,383 km (0.102 R)
• M15: 2,603,751 km (0.025 R)
• M16: 2,692,163 km (0.112 R)
• M17: 2,890,081 km (0.114 R)
• M18: 2,944,834 km (0.117 R)
• M19: 3,000,036 km (0.086 R)
• M20: 3,055,537 km (0.118 R)
• M21: 3,243,132 km (0.035 R)
• M22: 3,512,259 km (0.119 R)
• M23: 3,828,658 km (0.11 R)
• M24: 4,010,719 km (0.09 R)
• M25: 4,154,333 km (0.099 R)
• M26: 4,897,685 km (0.026 R)
• M27: 5,029,331 km (0.108 R)
• M28: 5,095,603 km (0.072 R)
• M29: 5,206,604 km (0.06 R)
• M30: 5,363,383 km (0.101 R)
• M31: 6,100,152 km (0.074 R)
• M32: 6,384,688 km (0.107 R)
• M33: 6,868,487 km (0.096 R)
• M34: 7,090,191 km (0.116 R)
• M35: 7,540,481 km (0.099 R)
• M36: 8,547,574 km (0.11 R)
• M37: 8,653,339 km (0.029 R)
• M38: 9,080,441 km (0.086 R)
• M39: 9,242,456 km (0.068 R)
• M40: 9,459,971 km (0.087 R)
• M41: 9,955,290 km (0.117 R)
• M42: 10,487,559 km (0.095 R)
• M43: 10,742,773 km (0.074 R)
• M44: 11,579,324 km (0.075 R)
• M45: 11,843,215 km (0.04 R)
• M46: 12,168,590 km (0.034 R)
• M47: 12,436,819 km (0.12 R)
• M48: 12,676,924 km (0.067 R)
• M49: 12,827,868 km (0.099 R)
• M50: 13,131,402 km (0.07 R)
• M51: 13,529,482 km (0.117 R)
• M52: 13,652,750 km (0.106 R)
• M53: 13,745,501 km (0.106 R)
• M54: 14,842,802 km (0.08 R)
• M55: 15,353,828 km (0.054 R)
• M56: 15,450,169 km (0.116 R)
• M57: 16,065,764 km (0.041 R)
• M58: 16,491,520 km (0.105 R)
• M59: 16,689,288 km (0.115 R)
• M60: 16,887,804 km (0.073 R)
• M61: 17,087,218 km (0.066 R)
• M62: 17,320,741 km (0.104 R)
• M63: 17,656,289 km (0.116 R)
• M64: 17,892,354 km (0.099 R)
• M65: 18,572,875 km (0.086 R)
• M66: 18,641,391 km (0.1 R)
• M67: 18,709,906 km (0.075 R)
• M68: 21,091,654 km (0.09 R)
• M69: 21,306,477 km (0.038 R)
• M70: 21,738,067 km (0.114 R)
• M71: 21,918,631 km (0.044 R)
• M72: 22,099,944 km (0.118 R)
• M73: 22,208,851 km (0.111 R)
• M74: 22,317,908 km (0.113 R)
• M75: 22,609,923 km (0.101 R)
• M76: 22,792,881 km (0.11 R)
• M77: 24,125,649 km (0.068 R)
• M78: 24,387,744 km (0.095 R)
• M79: 24,462,693 km (0.073 R)
• M80: 24,876,929 km (0.118 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: 293 - 13,858 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit