🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.47 AU - 0.57 AU

Year: 238 Days

Day: 18.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 19 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.47 AU - 0.71 AU

Year: 288 Days

Day: 27.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 9.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,127,125 km

• M1: 838,795 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.3

Radius: 10.8

Gravity: 7.02 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.73 AU - 1.07 AU

Year: 543 Days

Day: 9.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,127,125 km

• M1: 134,339 km (0.104 R)
• M2: 562,189 km (0.112 R)
• M3: 991,983 km (0.089 R)
• M4: 1,404,874 km (0.106 R)
• M5: 1,807,292 km (0.036 R)
• M6: 2,164,083 km (0.062 R)
• M7: 2,516,386 km (0.081 R)
• M8: 3,389,289 km (0.115 R)
• M9: 3,966,438 km (0.119 R)
• M10: 4,655,187 km (0.101 R)
• M11: 5,387,019 km (0.076 R)
• M12: 5,744,259 km (0.112 R)
• M13: 6,727,566 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.3

Radius: 8.9

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 2.07 AU - 3.25 AU

Year: 2758 Days

Day: 11.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,127,125 km

• M1: 119,080 km (0.112 R)
• M2: 588,069 km (0.088 R)
• M3: 919,279 km (0.072 R)
• M4: 1,754,633 km (0.088 R)
• M5: 6,057,816 km (0.091 R)
• M6: 6,863,550 km (0.113 R)
• M7: 8,028,918 km (0.108 R)
• M8: 9,439,925 km (0.037 R)
• M9: 10,330,331 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.2

Radius: 10.5

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 4.21 AU - 5.93 AU

Year: 7258 Days

Day: 6.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 57,127,125 km

• M1: 130,599 km (0.074 R)
• M2: 475,422 km (0.059 R)
• M3: 2,047,696 km (0.093 R)
• M4: 2,989,414 km (0.115 R)
• M5: 4,096,588 km (0.066 R)
• M6: 4,485,094 km (0.027 R)
• M7: 5,865,284 km (0.114 R)
• M8: 6,225,665 km (0.086 R)
• M9: 8,920,521 km (0.053 R)
• M10: 10,691,909 km (0.038 R)
• M11: 11,082,360 km (0.099 R)
• M12: 13,069,169 km (0.045 R)
• M13: 13,459,470 km (0.089 R)
• M14: 17,939,627 km (0.036 R)
• M15: 18,772,139 km (0.042 R)
• M16: 19,197,895 km (0.079 R)
• M17: 22,599,900 km (0.095 R)
• M18: 23,325,599 km (0.089 R)
• M19: 25,595,896 km (0.06 R)
• M20: 26,119,639 km (0.098 R)
• M21: 27,008,699 km (0.102 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 901.7

Radius: 6.7

Gravity: 20.09 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 7.23 AU - 10.83 AU

Year: 17253 Days

Day: 20 Hours

Environment

Temp: -237 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,127,125 km

• M1: 83,326 km (0.089 R)
• M2: 359,035 km (0.073 R)
• M3: 1,305,690 km (0.078 R)
• M4: 1,602,343 km (0.113 R)
• M5: 1,812,378 km (0.119 R)
• M6: 2,698,596 km (0.095 R)
• M7: 3,237,148 km (0.1 R)
• M8: 5,918,840 km (0.073 R)
• M9: 8,483,546 km (0.046 R)
• M10: 9,632,457 km (0.115 R)
• M11: 11,006,065 km (0.109 R)
• M12: 12,035,448 km (0.1 R)
• M13: 12,302,630 km (0.107 R)
• M14: 12,848,662 km (0.03 R)
• M15: 13,770,185 km (0.112 R)
• M16: 15,117,912 km (0.08 R)
• M17: 21,295,107 km (0.048 R)
• M18: 23,505,117 km (0.041 R)
• M19: 26,196,831 km (0.069 R)
• M20: 27,214,246 km (0.058 R)
• M21: 28,257,542 km (0.12 R)
• M22: 35,904,387 km (0.097 R)
• M23: 36,877,521 km (0.088 R)
• M24: 38,154,339 km (0.108 R)
• M25: 42,468,741 km (0.104 R)
• M26: 43,713,844 km (0.086 R)
• M27: 50,305,725 km (0.095 R)
• M28: 61,783,921 km (0.068 R)
• M29: 65,828,598 km (0.094 R)
• M30: 67,705,004 km (0.116 R)
• M31: 70,694,119 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 613.4

Radius: 7.4

Gravity: 11.2 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 7.73 AU - 10.63 AU

Year: 17685 Days

Day: 20.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 57,127,125 km

• M1: 97,089 km (0.098 R)
• M2: 753,225 km (0.118 R)
• M3: 1,950,457 km (0.095 R)
• M4: 2,628,734 km (0.084 R)
• M5: 3,454,514 km (0.084 R)
• M6: 4,063,677 km (0.05 R)
• M7: 4,377,982 km (0.101 R)
• M8: 5,607,676 km (0.079 R)
• M9: 7,323,115 km (0.116 R)
• M10: 8,275,605 km (0.09 R)
• M11: 10,194,048 km (0.107 R)
• M12: 10,775,535 km (0.105 R)
• M13: 15,558,029 km (0.091 R)
• M14: 22,840,453 km (0.099 R)
• M15: 23,936,258 km (0.109 R)
• M16: 29,129,847 km (0.109 R)
• M17: 33,611,650 km (0.115 R)
• M18: 33,994,022 km (0.068 R)
• M19: 36,617,520 km (0.061 R)
• M20: 44,983,781 km (0.067 R)
• M21: 51,273,025 km (0.099 R)
• M22: 60,724,618 km (0.12 R)
• M23: 63,985,852 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 322.2

Radius: 6.9

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 8.23 AU - 11.01 AU

Year: 18971 Days

Day: 18.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 57,127,125 km

• M1: 89,160 km (0.044 R)
• M2: 542,143 km (0.071 R)
• M3: 761,902 km (0.115 R)
• M4: 1,462,618 km (0.113 R)
• M5: 3,681,903 km (0.09 R)
• M6: 4,716,522 km (0.069 R)
• M7: 6,513,192 km (0.117 R)
• M8: 7,831,897 km (0.045 R)
• M9: 10,210,952 km (0.115 R)
• M10: 11,623,156 km (0.115 R)
• M11: 13,418,929 km (0.111 R)
• M12: 19,400,450 km (0.052 R)
• M13: 19,903,548 km (0.098 R)
• M14: 30,851,270 km (0.115 R)
• M15: 32,819,379 km (0.101 R)
• M16: 37,518,248 km (0.094 R)
• M17: 49,146,192 km (0.079 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 476 - 15,083 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit