🌌 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: 2.51

Radius: 1.45

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.52 AU - 0.6 AU

Year: 271 Days

Day: 47.3 Hours

Environment

Temp: -129 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.53 AU - 0.63 AU

Year: 285 Days

Day: 17.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.59 AU - 0.73 AU

Year: 346 Days

Day: 25.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 27.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.8

Radius: 11

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.83 AU - 1.01 AU

Year: 570 Days

Day: 10.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 23,152,317 km

• M1: 136,732 km (0.119 R)
• M2: 506,838 km (0.093 R)
• M3: 985,700 km (0.114 R)
• M4: 1,365,829 km (0.06 R)
• M5: 1,782,907 km (0.089 R)
• M6: 2,125,636 km (0.104 R)
• M7: 2,738,239 km (0.054 R)
• M8: 3,178,656 km (0.063 R)
• M9: 4,128,452 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783.5

Radius: 14.9

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.9 AU - 1.22 AU

Year: 705 Days

Day: 5.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 23,152,317 km

• M1: 185,352 km (0.111 R)
• M2: 841,338 km (0.101 R)
• M3: 1,348,176 km (0.11 R)
• M4: 1,817,764 km (0.093 R)
• M5: 2,656,858 km (0.03 R)
• M6: 3,453,467 km (0.042 R)
• M7: 4,832,310 km (0.042 R)
• M8: 5,886,975 km (0.119 R)
• M9: 7,223,632 km (0.086 R)
• M10: 7,774,153 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.9

Radius: 10.4

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.26 AU - 1.4 AU

Year: 990 Days

Day: 6.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 23,152,317 km

• M1: 129,701 km (0.108 R)
• M2: 503,098 km (0.044 R)
• M3: 843,283 km (0.114 R)
• M4: 1,337,704 km (0.109 R)
• M5: 1,946,119 km (0.03 R)
• M6: 2,462,531 km (0.103 R)
• M7: 3,771,063 km (0.116 R)
• M8: 4,176,473 km (0.076 R)
• M9: 4,610,906 km (0.117 R)
• M10: 5,309,976 km (0.101 R)
• M11: 6,098,357 km (0.114 R)
• M12: 6,426,425 km (0.077 R)
• M13: 6,788,003 km (0.042 R)
• M14: 7,763,830 km (0.083 R)
• M15: 8,523,488 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285.4

Radius: 10.1

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 1.58 AU - 2.42 AU

Year: 1826 Days

Day: 6 Hours

Environment

Temp: -189 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 23,152,317 km

• M1: 125,662 km (0.036 R)
• M2: 516,861 km (0.099 R)
• M3: 1,213,538 km (0.095 R)
• M4: 3,044,017 km (0.119 R)
• M5: 4,187,992 km (0.091 R)
• M6: 4,725,647 km (0.032 R)
• M7: 5,472,440 km (0.091 R)
• M8: 6,502,571 km (0.071 R)
• M9: 8,297,147 km (0.059 R)
• M10: 8,828,668 km (0.071 R)
• M11: 9,264,297 km (0.096 R)
• M12: 9,991,043 km (0.066 R)
• M13: 11,523,823 km (0.036 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 387.1

Radius: 8.6

Gravity: 5.23 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 3.04 AU - 4.22 AU

Year: 4466 Days

Day: 12.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 23,152,317 km

• M1: 128,654 km (0.068 R)
• M2: 417,677 km (0.105 R)
• M3: 729,140 km (0.12 R)
• M4: 1,112,111 km (0.097 R)
• M5: 1,592,918 km (0.092 R)
• M6: 1,863,541 km (0.091 R)
• M7: 2,834,880 km (0.074 R)
• M8: 3,273,052 km (0.079 R)
• M9: 3,655,723 km (0.059 R)
• M10: 4,465,347 km (0.047 R)
• M11: 4,744,347 km (0.047 R)
• M12: 5,599,299 km (0.094 R)
• M13: 6,612,675 km (0.096 R)
• M14: 7,321,170 km (0.106 R)
• M15: 8,998,462 km (0.117 R)
• M16: 11,512,454 km (0.073 R)
• M17: 12,628,454 km (0.044 R)
• M18: 13,236,420 km (0.106 R)
• M19: 13,668,757 km (0.103 R)
• M20: 14,663,134 km (0.106 R)
• M21: 16,026,869 km (0.061 R)
• M22: 16,573,200 km (0.1 R)
• M23: 19,740,935 km (0.115 R)
• M24: 22,130,761 km (0.08 R)
• M25: 22,671,707 km (0.051 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: 550 - 15,632 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit