🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.59 AU - 0.69 AU

Year: 336 Days

Day: 26 Hours

Environment

Temp: -125 °C

Axial Tilt: 3.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.1

Radius: 8

Gravity: 7.24 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.65 AU - 0.75 AU

Year: 384 Days

Day: 9.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 88,574,480 km

• M1: 99,632 km (0.108 R)
• M2: 482,902 km (0.047 R)
• M3: 846,275 km (0.112 R)
• M4: 1,206,507 km (0.091 R)
• M5: 1,667,268 km (0.08 R)
• M6: 1,984,865 km (0.026 R)
• M7: 3,263,328 km (0.109 R)
• M8: 4,045,276 km (0.064 R)
• M9: 4,541,193 km (0.052 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.3

Radius: 14.5

Gravity: 0.05 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.66 AU - 1.08 AU

Year: 532 Days

Day: 10.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 88,574,480 km

• M1: 181,163 km (0.042 R)
• M2: 660,175 km (0.079 R)
• M3: 1,303,895 km (0.032 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.5

Radius: 10.9

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.87 AU - 1.21 AU

Year: 696 Days

Day: 7 Hours

Environment

Temp: -169 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 88,574,480 km

• M1: 136,732 km (0.106 R)
• M2: 584,628 km (0.079 R)
• M3: 1,088,474 km (0.091 R)
• M4: 1,545,795 km (0.1 R)
• M5: 1,914,853 km (0.116 R)
• M6: 2,540,022 km (0.09 R)
• M7: 3,649,590 km (0.091 R)
• M8: 4,328,465 km (0.052 R)
• M9: 4,911,298 km (0.043 R)
• M10: 5,703,868 km (0.118 R)
• M11: 6,177,794 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 13.5

Radius: 11.7

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.12 AU - 1.32 AU

Year: 884 Days

Day: 14.8 Hours

Environment

Temp: -172 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 88,574,480 km

• M1: 180,265 km (0.117 R)
• M2: 643,271 km (0.072 R)
• M3: 1,506,451 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.6

Radius: 12.1

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.82 AU - 5.66 AU

Year: 7869 Days

Day: 5.8 Hours

Environment

Temp: -224 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 88,574,480 km

• M1: 150,944 km (0.066 R)
• M2: 544,237 km (0.1 R)
• M3: 1,019,210 km (0.08 R)
• M4: 1,405,472 km (0.111 R)
• M5: 1,789,041 km (0.102 R)
• M6: 2,417,950 km (0.058 R)
• M7: 4,198,913 km (0.102 R)
• M8: 5,071,817 km (0.114 R)
• M9: 5,664,224 km (0.104 R)
• M10: 7,252,954 km (0.086 R)
• M11: 7,643,105 km (0.089 R)
• M12: 9,210,741 km (0.082 R)
• M13: 12,193,274 km (0.076 R)
• M14: 13,432,393 km (0.106 R)
• M15: 14,082,545 km (0.097 R)
• M16: 14,815,724 km (0.064 R)
• M17: 16,760,048 km (0.082 R)
• M18: 17,583,435 km (0.105 R)
• M19: 18,942,232 km (0.094 R)
• M20: 21,387,110 km (0.103 R)
• M21: 21,867,918 km (0.118 R)
• M22: 23,778,282 km (0.093 R)
• M23: 24,555,144 km (0.105 R)
• M24: 26,159,880 km (0.108 R)
• M25: 30,678,035 km (0.115 R)
• M26: 32,432,968 km (0.057 R)
• M27: 34,144,816 km (0.049 R)
• M28: 36,255,044 km (0.086 R)
• M29: 36,710,121 km (0.071 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 239.8

Radius: 3.6

Gravity: 18.5 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 7.68 AU - 9.02 AU

Year: 15828 Days

Day: 22.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 88,574,480 km

• M1: 45,478 km (0.086 R)
• M2: 187,446 km (0.112 R)
• M3: 487,689 km (0.103 R)
• M4: 743,950 km (0.091 R)
• M5: 1,233,584 km (0.066 R)
• M6: 1,384,079 km (0.117 R)
• M7: 3,022,625 km (0.095 R)
• M8: 3,157,861 km (0.062 R)
• M9: 3,740,246 km (0.051 R)
• M10: 4,221,652 km (0.075 R)
• M11: 4,957,225 km (0.051 R)
• M12: 5,638,045 km (0.102 R)
• M13: 7,343,011 km (0.088 R)
• M14: 7,464,934 km (0.067 R)
• M15: 8,224,592 km (0.105 R)
• M16: 8,758,955 km (0.071 R)
• M17: 9,081,040 km (0.055 R)
• M18: 9,411,052 km (0.065 R)
• M19: 10,551,736 km (0.113 R)
• M20: 12,807,971 km (0.102 R)
• M21: 16,589,506 km (0.118 R)
• M22: 17,011,372 km (0.102 R)
• M23: 18,245,256 km (0.059 R)
• M24: 19,615,422 km (0.119 R)
• M25: 19,850,291 km (0.115 R)
• M26: 20,808,465 km (0.12 R)
• M27: 21,052,759 km (0.044 R)
• M28: 28,393,975 km (0.066 R)
• M29: 30,647,218 km (0.061 R)
• M30: 31,281,812 km (0.034 R)
• M31: 36,440,845 km (0.088 R)
• M32: 37,272,459 km (0.083 R)
• M33: 38,850,417 km (0.115 R)
• M34: 41,621,269 km (0.11 R)
• M35: 42,660,675 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 935.4

Radius: 5.3

Gravity: 33.3 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 9.74 AU - 10.74 AU

Year: 21496 Days

Day: 21.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 88,574,480 km

• M1: 65,973 km (0.104 R)
• M2: 234,719 km (0.085 R)
• M3: 508,483 km (0.056 R)
• M4: 828,473 km (0.096 R)
• M5: 1,034,320 km (0.073 R)
• M6: 1,694,495 km (0.098 R)
• M7: 2,029,744 km (0.047 R)
• M8: 2,269,549 km (0.032 R)
• M9: 3,334,237 km (0.09 R)
• M10: 5,603,936 km (0.072 R)
• M11: 7,053,988 km (0.104 R)
• M12: 7,554,094 km (0.116 R)
• M13: 9,080,292 km (0.12 R)
• M14: 9,313,963 km (0.104 R)
• M15: 11,945,390 km (0.096 R)
• M16: 13,094,152 km (0.113 R)
• M17: 13,392,600 km (0.053 R)
• M18: 14,393,559 km (0.09 R)
• M19: 14,871,973 km (0.111 R)
• M20: 17,785,541 km (0.118 R)
• M21: 20,653,781 km (0.068 R)
• M22: 23,159,246 km (0.074 R)
• M23: 27,407,676 km (0.086 R)
• M24: 28,639,016 km (0.107 R)
• M25: 32,012,598 km (0.084 R)
• M26: 32,690,276 km (0.116 R)
• M27: 38,613,155 km (0.065 R)
• M28: 44,203,179 km (0.104 R)
• M29: 45,552,402 km (0.098 R)
• M30: 48,688,422 km (0.057 R)
• M31: 55,775,173 km (0.086 R)
• M32: 59,156,683 km (0.085 R)
• M33: 60,587,886 km (0.075 R)
• M34: 71,488,334 km (0.091 R)
• M35: 75,950,989 km (0.117 R)
• M36: 83,624,761 km (0.115 R)
• M37: 86,206,222 km (0.064 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 294 - 11,337 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit