🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.56 AU - 0.6 AU

Year: 281 Days

Day: 12.2 Hours

Environment

Temp: -119 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 170.3

Radius: 14.6

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.91 AU - 1.15 AU

Year: 665 Days

Day: 10.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 32,690,005 km

• M1: 181,761 km (0.101 R)
• M2: 673,041 km (0.089 R)
• M3: 1,300,454 km (0.074 R)
• M4: 1,760,169 km (0.046 R)
• M5: 2,356,466 km (0.032 R)
• M6: 4,088,061 km (0.117 R)
• M7: 4,817,949 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 402.3

Radius: 10.2

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.77 AU - 2.51 AU

Year: 1990 Days

Day: 13.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,690,005 km

• M1: 130,300 km (0.086 R)
• M2: 482,004 km (0.095 R)
• M3: 819,198 km (0.083 R)
• M4: 1,329,626 km (0.057 R)
• M5: 2,077,466 km (0.036 R)
• M6: 2,664,188 km (0.082 R)
• M7: 3,936,668 km (0.088 R)
• M8: 8,219,954 km (0.114 R)
• M9: 8,570,911 km (0.064 R)
• M10: 12,500,398 km (0.111 R)
• M11: 13,643,625 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.3

Radius: 12.9

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.7 AU - 2.72 AU

Year: 2089 Days

Day: 9 Hours

Environment

Temp: -200 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 32,690,005 km

• M1: 160,519 km (0.058 R)
• M2: 981,362 km (0.112 R)
• M3: 3,440,601 km (0.069 R)
• M4: 8,034,902 km (0.03 R)
• M5: 9,688,407 km (0.108 R)
• M6: 10,158,892 km (0.059 R)
• M7: 10,710,609 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397

Radius: 10.1

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.16 AU - 3.32 AU

Year: 2884 Days

Day: 10.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,690,005 km

• M1: 125,812 km (0.086 R)
• M2: 530,773 km (0.113 R)
• M3: 893,847 km (0.043 R)
• M4: 1,234,033 km (0.098 R)
• M5: 2,574,729 km (0.033 R)
• M6: 3,118,368 km (0.117 R)
• M7: 3,664,400 km (0.074 R)
• M8: 4,751,079 km (0.094 R)
• M9: 5,287,686 km (0.069 R)
• M10: 6,219,831 km (0.06 R)
• M11: 7,667,938 km (0.073 R)
• M12: 8,001,093 km (0.12 R)
• M13: 9,569,776 km (0.066 R)
• M14: 9,885,427 km (0.115 R)
• M15: 10,317,017 km (0.117 R)
• M16: 11,967,680 km (0.101 R)
• M17: 12,962,057 km (0.079 R)
• M18: 17,082,581 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 265.9

Radius: 15

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 2.88 AU - 3.9 AU

Year: 3969 Days

Day: 7.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 126.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 32,690,005 km

• M1: 186,549 km (0.109 R)
• M2: 738,116 km (0.094 R)
• M3: 1,330,075 km (0.081 R)
• M4: 2,306,350 km (0.038 R)
• M5: 2,954,259 km (0.044 R)
• M6: 3,853,342 km (0.115 R)
• M7: 4,326,670 km (0.106 R)
• M8: 4,928,502 km (0.047 R)
• M9: 5,610,668 km (0.12 R)
• M10: 7,459,698 km (0.106 R)
• M11: 8,855,745 km (0.076 R)
• M12: 10,344,842 km (0.101 R)
• M13: 13,101,931 km (0.12 R)
• M14: 14,229,001 km (0.067 R)
• M15: 17,092,155 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 980.3

Radius: 3.5

Gravity: 80.02 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 6.29 AU - 7.51 AU

Year: 11524 Days

Day: 15.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 32,690,005 km

• M1: 43,832 km (0.096 R)
• M2: 202,855 km (0.07 R)
• M3: 719,267 km (0.12 R)
• M4: 863,778 km (0.095 R)
• M5: 1,086,380 km (0.098 R)
• M6: 1,446,013 km (0.114 R)
• M7: 2,118,007 km (0.059 R)
• M8: 3,955,667 km (0.095 R)
• M9: 5,201,518 km (0.106 R)
• M10: 6,523,365 km (0.109 R)
• M11: 6,646,035 km (0.085 R)
• M12: 7,504,428 km (0.103 R)
• M13: 8,337,837 km (0.095 R)
• M14: 9,914,599 km (0.052 R)
• M15: 10,186,269 km (0.053 R)
• M16: 10,631,173 km (0.108 R)
• M17: 11,147,136 km (0.048 R)
• M18: 11,921,454 km (0.073 R)
• M19: 14,115,307 km (0.079 R)
• M20: 15,378,960 km (0.085 R)
• M21: 15,669,629 km (0.118 R)
• M22: 16,563,775 km (0.07 R)
• M23: 17,412,743 km (0.088 R)
• M24: 19,618,863 km (0.093 R)
• M25: 19,874,975 km (0.037 R)
• M26: 21,821,393 km (0.097 R)
• M27: 22,466,309 km (0.104 R)
• M28: 23,794,289 km (0.093 R)
• M29: 26,814,371 km (0.118 R)
• M30: 27,553,983 km (0.1 R)
• M31: 28,524,873 km (0.106 R)
• M32: 32,517,491 km (0.033 R)
• M33: 32,996,204 km (0.076 R)
• M34: 33,479,704 km (0.088 R)
• M35: 34,090,512 km (0.092 R)
• M36: 39,926,475 km (0.111 R)
• M37: 42,435,979 km (0.061 R)
• M38: 45,643,208 km (0.115 R)
• M39: 49,322,268 km (0.077 R)
• M40: 49,795,596 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 505.6

Radius: 7.8

Gravity: 8.31 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 8.05 AU - 8.19 AU

Year: 14712 Days

Day: 16.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 32,690,005 km

• M1: 167,400 km (0.063 R)
• M2: 1,035,516 km (0.111 R)
• M3: 1,324,988 km (0.109 R)
• M4: 1,715,439 km (0.115 R)
• M5: 2,070,883 km (0.1 R)
• M6: 2,750,506 km (0.047 R)
• M7: 3,785,425 km (0.107 R)
• M8: 5,026,189 km (0.083 R)
• M9: 5,506,249 km (0.106 R)
• M10: 6,637,658 km (0.111 R)
• M11: 7,005,519 km (0.074 R)
• M12: 11,124,247 km (0.099 R)
• M13: 11,585,308 km (0.085 R)
• M14: 12,361,571 km (0.101 R)
• M15: 12,918,973 km (0.084 R)
• M16: 13,884,926 km (0.069 R)
• M17: 16,398,919 km (0.108 R)
• M18: 20,117,473 km (0.071 R)
• M19: 21,946,905 km (0.105 R)
• M20: 24,555,144 km (0.083 R)
• M21: 28,522,480 km (0.099 R)
• M22: 29,385,959 km (0.076 R)
• M23: 30,489,692 km (0.093 R)
• M24: 31,965,475 km (0.107 R)
• M25: 32,545,615 km (0.101 R)
• M26: 50,051,708 km (0.12 R)
• M27: 50,991,332 km (0.099 R)
• M28: 53,880,515 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 16.1

Radius: 6

Gravity: 0.45 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 8.68 AU - 9.44 AU

Year: 17339 Days

Day: 21.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 32,690,005 km

• M1: 77,791 km (0.086 R)
• M2: 576,251 km (0.118 R)
• M3: 764,894 km (0.112 R)
• M4: 1,140,833 km (0.059 R)
• M5: 2,230,803 km (0.046 R)
• M6: 3,827,761 km (0.116 R)
• M7: 5,724,662 km (0.031 R)
• M8: 13,209,642 km (0.058 R)
• M9: 16,056,938 km (0.108 R)
• M10: 17,595,702 km (0.049 R)
• M11: 17,870,662 km (0.113 R)
• M12: 19,639,508 km (0.098 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 50.5

Radius: 7.1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 9.53 AU - 10.89 AU

Year: 20743 Days

Day: 16.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 32,690,005 km

• M1: 89,011 km (0.098 R)
• M2: 360,980 km (0.084 R)
• M3: 1,534,575 km (0.106 R)
• M4: 1,793,828 km (0.114 R)
• M5: 2,351,679 km (0.111 R)
• M6: 2,884,397 km (0.11 R)
• M7: 3,179,553 km (0.061 R)
• M8: 3,494,756 km (0.08 R)
• M9: 6,062,603 km (0.117 R)
• M10: 7,307,856 km (0.103 R)
• M11: 8,124,361 km (0.071 R)
• M12: 9,546,588 km (0.09 R)
• M13: 9,893,655 km (0.076 R)
• M14: 11,955,114 km (0.045 R)
• M15: 13,787,239 km (0.099 R)
• M16: 15,088,292 km (0.118 R)
• M17: 20,180,603 km (0.089 R)
• M18: 22,079,000 km (0.101 R)
• M19: 22,533,478 km (0.038 R)
• M20: 25,063,178 km (0.035 R)
• M21: 26,227,199 km (0.061 R)
• M22: 26,908,319 km (0.085 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: 461 - 19,564 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit