🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.24

Radius: 0.57

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.48 AU - 0.64 AU

Year: 275 Days

Day: 28.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 974.3

Radius: 9.9

Gravity: 9.94 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.64 AU - 0.88 AU

Year: 435 Days

Day: 9.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,608,472 km

• M1: 123,119 km (0.075 R)
• M2: 476,320 km (0.114 R)
• M3: 851,062 km (0.116 R)
• M4: 1,164,470 km (0.034 R)
• M5: 1,637,049 km (0.09 R)
• M6: 2,677,951 km (0.084 R)
• M7: 3,497,149 km (0.113 R)
• M8: 3,930,983 km (0.113 R)
• M9: 4,254,414 km (0.098 R)
• M10: 4,565,278 km (0.077 R)
• M11: 5,891,763 km (0.063 R)
• M12: 6,298,070 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.8

Radius: 11.2

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.02 AU - 1.06 AU

Year: 696 Days

Day: 12.4 Hours

Environment

Temp: -166 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 78,608,472 km

• M1: 139,425 km (0.116 R)
• M2: 489,634 km (0.11 R)
• M3: 851,062 km (0.044 R)
• M4: 2,646,985 km (0.104 R)
• M5: 3,108,494 km (0.099 R)
• M6: 3,579,129 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.5

Radius: 8.3

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.01 AU - 1.07 AU

Year: 696 Days

Day: 11.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 78,608,472 km

• M1: 111,002 km (0.094 R)
• M2: 397,930 km (0.093 R)
• M3: 1,109,418 km (0.1 R)
• M4: 1,427,762 km (0.052 R)
• M5: 1,807,142 km (0.055 R)
• M6: 2,108,881 km (0.106 R)
• M7: 3,394,974 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.9

Radius: 13.2

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.73 AU - 2.17 AU

Year: 1786 Days

Day: 14.4 Hours

Environment

Temp: -197 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 78,608,472 km

• M1: 164,258 km (0.084 R)
• M2: 847,921 km (0.101 R)
• M3: 1,426,416 km (0.105 R)
• M4: 2,441,437 km (0.065 R)
• M5: 3,267,068 km (0.064 R)
• M6: 5,562,198 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.7

Radius: 11.2

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 3.96 AU - 5.18 AU

Year: 6409 Days

Day: 9.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 78,608,472 km

• M1: 139,276 km (0.119 R)
• M2: 488,886 km (0.095 R)
• M3: 867,219 km (0.071 R)
• M4: 1,301,202 km (0.107 R)
• M5: 2,139,250 km (0.081 R)
• M6: 2,581,162 km (0.048 R)
• M7: 4,162,561 km (0.073 R)
• M8: 5,936,193 km (0.07 R)
• M9: 7,079,570 km (0.108 R)
• M10: 8,497,309 km (0.117 R)
• M11: 9,291,225 km (0.069 R)
• M12: 11,471,763 km (0.087 R)
• M13: 12,528,223 km (0.066 R)
• M14: 12,879,629 km (0.112 R)
• M15: 14,688,267 km (0.113 R)
• M16: 16,555,248 km (0.044 R)
• M17: 17,737,670 km (0.105 R)
• M18: 18,575,568 km (0.097 R)
• M19: 19,792,696 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 671.4

Radius: 6.2

Gravity: 17.47 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 8.85 AU - 11.45 AU

Year: 21213 Days

Day: 21.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 78,608,472 km

• M1: 77,043 km (0.066 R)
• M2: 287,976 km (0.103 R)
• M3: 724,353 km (0.099 R)
• M4: 2,240,079 km (0.113 R)
• M5: 2,508,307 km (0.091 R)
• M6: 2,797,929 km (0.086 R)
• M7: 3,109,541 km (0.115 R)
• M8: 3,895,828 km (0.104 R)
• M9: 4,843,829 km (0.07 R)
• M10: 6,105,687 km (0.107 R)
• M11: 8,707,942 km (0.097 R)
• M12: 10,190,906 km (0.105 R)
• M13: 11,183,039 km (0.094 R)
• M14: 12,238,003 km (0.095 R)
• M15: 13,285,787 km (0.093 R)
• M16: 16,123,958 km (0.092 R)
• M17: 26,440,227 km (0.113 R)
• M18: 29,388,801 km (0.077 R)
• M19: 30,376,745 km (0.105 R)
• M20: 30,627,172 km (0.087 R)
• M21: 30,878,945 km (0.102 R)
• M22: 34,143,919 km (0.094 R)
• M23: 36,490,960 km (0.057 R)
• M24: 38,796,113 km (0.077 R)
• M25: 41,196,710 km (0.033 R)
• M26: 42,433,286 km (0.101 R)
• M27: 43,535,374 km (0.076 R)
• M28: 51,612,163 km (0.119 R)
• M29: 58,479,154 km (0.099 R)
• M30: 65,930,474 km (0.106 R)
• M31: 68,261,957 km (0.115 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 275 - 15,983 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit