🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.47 AU - 0.61 AU

Year: 256 Days

Day: 36.8 Hours

Environment

Temp: -129 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.7

Radius: 13.6

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.73 AU - 0.97 AU

Year: 506 Days

Day: 12.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 91,948,822 km

• M1: 170,691 km (0.112 R)
• M2: 697,126 km (0.114 R)
• M3: 1,269,039 km (0.079 R)
• M4: 1,757,177 km (0.087 R)
• M5: 2,607,192 km (0.078 R)
• M6: 3,106,849 km (0.057 R)
• M7: 3,893,285 km (0.044 R)
• M8: 4,577,246 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.8

Radius: 13.8

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.94 AU - 0.96 AU

Year: 598 Days

Day: 12.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 91,948,822 km

• M1: 171,589 km (0.039 R)
• M2: 721,511 km (0.114 R)
• M3: 1,470,248 km (0.1 R)
• M4: 2,174,405 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.3

Radius: 9.8

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 3.13 AU - 4.63 AU

Year: 4935 Days

Day: 6.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 91,948,822 km

• M1: 121,922 km (0.109 R)
• M2: 552,315 km (0.103 R)
• M3: 1,002,007 km (0.112 R)
• M4: 1,344,137 km (0.1 R)
• M5: 3,335,883 km (0.11 R)
• M6: 3,656,471 km (0.101 R)
• M7: 4,722,805 km (0.093 R)
• M8: 9,437,082 km (0.058 R)
• M9: 10,491,299 km (0.096 R)
• M10: 11,421,797 km (0.101 R)
• M11: 12,919,123 km (0.111 R)
• M12: 13,941,923 km (0.081 R)
• M13: 15,258,684 km (0.058 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.9

Radius: 13.9

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 3.21 AU - 5.29 AU

Year: 5657 Days

Day: 12.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 91,948,822 km

• M1: 173,234 km (0.052 R)
• M2: 732,132 km (0.102 R)
• M3: 1,265,149 km (0.103 R)
• M4: 1,738,477 km (0.103 R)
• M5: 2,317,271 km (0.034 R)
• M6: 3,598,427 km (0.104 R)
• M7: 6,359,854 km (0.115 R)
• M8: 9,413,895 km (0.098 R)
• M9: 11,393,972 km (0.085 R)
• M10: 12,553,954 km (0.098 R)
• M11: 21,155,981 km (0.028 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.5

Radius: 14.3

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 5.57 AU - 5.63 AU

Year: 8557 Days

Day: 11.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 91,948,822 km

• M1: 178,021 km (0.032 R)
• M2: 1,666,819 km (0.096 R)
• M3: 2,443,382 km (0.108 R)
• M4: 2,936,756 km (0.118 R)
• M5: 6,887,037 km (0.044 R)
• M6: 7,489,767 km (0.085 R)
• M7: 10,165,325 km (0.109 R)
• M8: 13,891,209 km (0.056 R)
• M9: 15,929,630 km (0.114 R)
• M10: 16,452,475 km (0.066 R)
• M11: 17,740,363 km (0.094 R)
• M12: 18,373,311 km (0.106 R)
• M13: 21,292,415 km (0.104 R)
• M14: 22,249,691 km (0.104 R)
• M15: 23,235,392 km (0.039 R)
• M16: 26,732,242 km (0.094 R)
• M17: 29,771,472 km (0.117 R)
• M18: 38,833,214 km (0.062 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 306.7

Radius: 3.2

Gravity: 29.95 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 7.19 AU - 10.05 AU

Year: 16341 Days

Day: 24.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 91,948,822 km

• M1: 40,691 km (0.073 R)
• M2: 221,854 km (0.081 R)
• M3: 366,964 km (0.103 R)
• M4: 477,666 km (0.084 R)
• M5: 943,663 km (0.101 R)
• M6: 1,191,996 km (0.068 R)
• M7: 1,371,513 km (0.099 R)
• M8: 1,643,781 km (0.052 R)
• M9: 2,313,980 km (0.114 R)
• M10: 2,471,357 km (0.116 R)
• M11: 2,829,195 km (0.066 R)
• M12: 3,805,919 km (0.043 R)
• M13: 3,969,729 km (0.079 R)
• M14: 5,250,436 km (0.104 R)
• M15: 5,732,142 km (0.076 R)
• M16: 6,093,869 km (0.096 R)
• M17: 6,470,557 km (0.07 R)
• M18: 7,437,707 km (0.075 R)
• M19: 9,062,938 km (0.035 R)
• M20: 11,465,031 km (0.045 R)
• M21: 13,743,856 km (0.108 R)
• M22: 14,194,145 km (0.103 R)
• M23: 14,787,600 km (0.08 R)
• M24: 15,056,577 km (0.079 R)
• M25: 15,812,944 km (0.077 R)
• M26: 18,310,779 km (0.112 R)
• M27: 21,743,602 km (0.116 R)
• M28: 23,702,137 km (0.096 R)
• M29: 24,442,497 km (0.062 R)
• M30: 26,360,641 km (0.092 R)
• M31: 28,170,625 km (0.11 R)
• M32: 28,479,994 km (0.049 R)
• M33: 30,169,103 km (0.071 R)
• M34: 36,483,330 km (0.062 R)
• M35: 39,494,436 km (0.101 R)
• M36: 50,569,167 km (0.068 R)

Asteroid Belt

Center: 9.84 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 11.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 857.3

Radius: 4.5

Gravity: 42.34 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 9.81 AU - 12.31 AU

Year: 23749 Days

Day: 19.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 91,948,822 km

• M1: 58,942 km (0.099 R)
• M2: 319,092 km (0.096 R)
• M3: 1,727,556 km (0.097 R)
• M4: 2,274,037 km (0.097 R)
• M5: 2,512,347 km (0.034 R)
• M6: 3,962,249 km (0.064 R)
• M7: 4,979,814 km (0.109 R)
• M8: 5,138,238 km (0.117 R)
• M9: 5,299,953 km (0.06 R)
• M10: 6,251,246 km (0.053 R)
• M11: 8,318,539 km (0.083 R)
• M12: 9,415,092 km (0.05 R)
• M13: 11,201,440 km (0.119 R)
• M14: 19,805,711 km (0.03 R)
• M15: 20,709,432 km (0.097 R)
• M16: 24,258,192 km (0.095 R)
• M17: 25,175,676 km (0.039 R)
• M18: 26,474,784 km (0.106 R)
• M19: 29,851,507 km (0.104 R)
• M20: 30,375,100 km (0.094 R)
• M21: 31,305,748 km (0.069 R)
• M22: 34,497,867 km (0.037 R)
• M23: 34,785,245 km (0.084 R)
• M24: 40,554,188 km (0.06 R)
• M25: 47,105,078 km (0.074 R)
• M26: 49,984,837 km (0.071 R)
• M27: 54,716,020 km (0.059 R)
• M28: 58,505,034 km (0.091 R)
• M29: 59,530,378 km (0.09 R)
• M30: 63,321,039 km (0.066 R)
• M31: 72,549,283 km (0.11 R)
• M32: 74,928,487 km (0.055 R)
• M33: 78,594,084 km (0.088 R)
• M34: 81,356,857 km (0.048 R)
• M35: 83,148,292 km (0.077 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 493 - 10,570 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit