🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.56 AU - 0.64 AU

Year: 300 Days

Day: 12.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 18.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.01

Radius: 1.32

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.54 AU - 0.7 AU

Year: 315 Days

Day: 26.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 45.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 365.6

Radius: 15

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.56 AU - 0.9 AU

Year: 403 Days

Day: 11 Hours

Environment

Temp: -143 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 38,436,313 km

• M1: 187,745 km (0.12 R)
• M2: 880,383 km (0.088 R)
• M3: 1,417,889 km (0.071 R)
• M4: 2,281,816 km (0.079 R)
• M5: 3,402,005 km (0.093 R)
• M6: 4,323,079 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.1

Radius: 9.4

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.72 AU - 0.94 AU

Year: 488 Days

Day: 8.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 38,436,313 km

• M1: 116,986 km (0.105 R)
• M2: 425,756 km (0.115 R)
• M3: 765,642 km (0.058 R)
• M4: 1,146,219 km (0.106 R)
• M5: 1,495,829 km (0.079 R)
• M6: 1,886,728 km (0.102 R)
• M7: 4,002,641 km (0.105 R)
• M8: 4,486,291 km (0.084 R)
• M9: 4,979,216 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 554.5

Radius: 11.5

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.85 AU - 0.93 AU

Year: 542 Days

Day: 11.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,436,313 km

• M1: 143,016 km (0.084 R)
• M2: 972,835 km (0.081 R)
• M3: 1,351,018 km (0.106 R)
• M4: 2,024,508 km (0.079 R)
• M5: 2,401,046 km (0.105 R)
• M6: 2,813,936 km (0.119 R)
• M7: 3,180,750 km (0.096 R)
• M8: 3,850,948 km (0.078 R)
• M9: 5,782,257 km (0.056 R)
• M10: 6,249,900 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.6

Radius: 11.8

Gravity: 6.39 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 2.84 AU - 3.96 AU

Year: 4048 Days

Day: 9.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 38,436,313 km

• M1: 146,905 km (0.107 R)
• M2: 516,262 km (0.081 R)
• M3: 1,070,971 km (0.043 R)
• M4: 1,624,184 km (0.099 R)
• M5: 2,301,563 km (0.082 R)
• M6: 3,334,836 km (0.112 R)
• M7: 4,457,717 km (0.117 R)
• M8: 5,013,773 km (0.056 R)
• M9: 5,531,082 km (0.101 R)
• M10: 6,113,616 km (0.082 R)
• M11: 6,545,655 km (0.059 R)
• M12: 8,443,902 km (0.056 R)
• M13: 10,553,382 km (0.12 R)
• M14: 11,497,494 km (0.091 R)
• M15: 13,813,867 km (0.101 R)
• M16: 15,333,034 km (0.061 R)
• M17: 16,960,958 km (0.103 R)
• M18: 17,569,372 km (0.094 R)
• M19: 18,255,428 km (0.108 R)
• M20: 21,530,425 km (0.113 R)
• M21: 24,249,366 km (0.069 R)
• M22: 25,256,758 km (0.093 R)
• M23: 26,130,709 km (0.102 R)
• M24: 26,616,004 km (0.076 R)
• M25: 28,617,025 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 324.7

Radius: 7.8

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 5.23 AU - 7.55 AU

Year: 10430 Days

Day: 21.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 38,436,313 km

• M1: 97,089 km (0.098 R)
• M2: 575,802 km (0.108 R)
• M3: 868,565 km (0.065 R)
• M4: 1,525,449 km (0.118 R)
• M5: 2,151,367 km (0.045 R)
• M6: 2,998,839 km (0.118 R)
• M7: 3,430,130 km (0.073 R)
• M8: 4,363,620 km (0.11 R)
• M9: 4,718,915 km (0.057 R)
• M10: 5,804,846 km (0.072 R)
• M11: 6,440,936 km (0.034 R)
• M12: 8,091,749 km (0.115 R)
• M13: 8,713,926 km (0.094 R)
• M14: 10,528,997 km (0.102 R)
• M15: 12,366,059 km (0.064 R)
• M16: 13,191,091 km (0.06 R)
• M17: 14,169,910 km (0.036 R)
• M18: 14,828,590 km (0.047 R)
• M19: 16,014,003 km (0.044 R)
• M20: 16,531,612 km (0.119 R)
• M21: 17,805,587 km (0.104 R)
• M22: 20,171,777 km (0.112 R)
• M23: 20,472,020 km (0.07 R)
• M24: 21,939,725 km (0.03 R)
• M25: 24,060,125 km (0.108 R)
• M26: 24,482,888 km (0.08 R)
• M27: 31,234,839 km (0.039 R)
• M28: 32,968,229 km (0.094 R)
• M29: 35,305,097 km (0.07 R)
• M30: 37,864,119 km (0.073 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 185 - 14,351 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit