🌌 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: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.55 AU - 0.61 AU

Year: 290 Days

Day: 21.1 Hours

Environment

Temp: -120 °C

Axial Tilt: 25.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,744,324 km

• M1: 100,829 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.95

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.55 AU - 0.65 AU

Year: 305 Days

Day: 18.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469.2

Radius: 11.5

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.64 AU - 0.88 AU

Year: 435 Days

Day: 11.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,744,324 km

• M1: 143,016 km (0.082 R)
• M2: 546,930 km (0.037 R)
• M3: 965,355 km (0.104 R)
• M4: 1,377,348 km (0.101 R)
• M5: 1,754,484 km (0.096 R)
• M6: 2,329,388 km (0.067 R)
• M7: 3,186,435 km (0.098 R)
• M8: 3,736,506 km (0.088 R)
• M9: 4,137,728 km (0.052 R)
• M10: 4,609,709 km (0.077 R)
• M11: 5,027,685 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.5

Radius: 13.8

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.59 AU - 0.97 AU

Year: 452 Days

Day: 10.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,744,324 km

• M1: 171,589 km (0.116 R)
• M2: 698,323 km (0.102 R)
• M3: 1,219,372 km (0.079 R)
• M4: 1,656,497 km (0.1 R)
• M5: 2,375,315 km (0.098 R)
• M6: 3,052,993 km (0.113 R)
• M7: 3,831,800 km (0.119 R)
• M8: 4,262,193 km (0.1 R)
• M9: 5,052,518 km (0.068 R)
• M10: 5,621,140 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.9

Radius: 14.6

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.24 AU - 1.74 AU

Year: 1193 Days

Day: 7.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,744,324 km

• M1: 184,454 km (0.039 R)
• M2: 656,286 km (0.045 R)
• M3: 1,231,340 km (0.062 R)
• M4: 1,890,468 km (0.086 R)
• M5: 2,469,861 km (0.037 R)
• M6: 3,017,987 km (0.042 R)
• M7: 4,671,792 km (0.088 R)
• M8: 6,198,438 km (0.049 R)
• M9: 6,868,637 km (0.077 R)
• M10: 7,357,223 km (0.057 R)
• M11: 8,354,891 km (0.031 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.7

Radius: 12.3

Gravity: 5.46 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 2.08 AU - 3.28 AU

Year: 2878 Days

Day: 5.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 37,744,324 km

• M1: 153,039 km (0.108 R)
• M2: 536,757 km (0.064 R)
• M3: 1,254,079 km (0.106 R)
• M4: 2,152,863 km (0.1 R)
• M5: 2,581,012 km (0.108 R)
• M6: 3,808,762 km (0.113 R)
• M7: 4,485,991 km (0.09 R)
• M8: 5,495,328 km (0.097 R)
• M9: 5,971,797 km (0.066 R)
• M10: 6,475,942 km (0.057 R)
• M11: 8,127,503 km (0.109 R)
• M12: 10,963,430 km (0.114 R)
• M13: 12,785,681 km (0.045 R)
• M14: 13,817,159 km (0.086 R)
• M15: 17,525,690 km (0.043 R)
• M16: 20,442,100 km (0.073 R)
• M17: 20,883,564 km (0.117 R)
• M18: 21,590,264 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.2

Radius: 11.3

Gravity: 7.79 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 3.86 AU - 5.38 AU

Year: 6514 Days

Day: 14.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 92 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 37,744,324 km

• M1: 155,731 km (0.084 R)
• M2: 1,194,539 km (0.104 R)
• M3: 2,166,028 km (0.11 R)
• M4: 4,122,319 km (0.087 R)
• M5: 4,635,290 km (0.097 R)
• M6: 5,010,332 km (0.09 R)
• M7: 5,659,587 km (0.11 R)
• M8: 6,123,041 km (0.059 R)
• M9: 7,088,396 km (0.082 R)
• M10: 7,988,526 km (0.098 R)
• M11: 8,402,912 km (0.092 R)
• M12: 8,875,492 km (0.096 R)
• M13: 10,794,683 km (0.112 R)
• M14: 14,625,436 km (0.075 R)
• M15: 15,564,312 km (0.052 R)
• M16: 17,562,192 km (0.054 R)
• M17: 19,875,872 km (0.064 R)
• M18: 20,793,655 km (0.074 R)
• M19: 21,659,528 km (0.05 R)
• M20: 26,262,654 km (0.078 R)
• M21: 28,311,846 km (0.113 R)
• M22: 30,969,751 km (0.104 R)
• M23: 31,684,979 km (0.119 R)
• M24: 37,694,325 km (0.096 R)
• M25: 38,158,976 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531

Radius: 14.6

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 4.11 AU - 6.43 AU

Year: 7936 Days

Day: 9.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,744,324 km

• M1: 182,360 km (0.087 R)
• M2: 929,152 km (0.063 R)
• M3: 1,593,816 km (0.058 R)
• M4: 5,105,925 km (0.066 R)
• M5: 5,869,323 km (0.104 R)
• M6: 7,740,343 km (0.083 R)
• M7: 9,177,231 km (0.112 R)
• M8: 16,476,261 km (0.032 R)
• M9: 17,531,374 km (0.085 R)
• M10: 19,922,996 km (0.049 R)
• M11: 21,044,381 km (0.064 R)
• M12: 21,737,169 km (0.116 R)
• M13: 34,889,963 km (0.089 R)
• M14: 35,643,637 km (0.11 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 256 - 19,965 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit