🌌 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: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.63 AU - 0.65 AU

Year: 336 Days

Day: 45 Hours

Environment

Temp: -135 °C

Axial Tilt: 0.5 °

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: 742.1

Radius: 12.7

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.75 AU - 0.77 AU

Year: 435 Days

Day: 13.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,437,988 km

• M1: 167,699 km (0.099 R)
• M2: 690,993 km (0.068 R)
• M3: 1,096,552 km (0.078 R)
• M4: 1,808,489 km (0.094 R)
• M5: 2,333,727 km (0.11 R)
• M6: 3,284,870 km (0.05 R)
• M7: 4,379,178 km (0.1 R)
• M8: 5,822,948 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 821.1

Radius: 13.6

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.79 AU - 0.87 AU

Year: 496 Days

Day: 9.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,437,988 km

• M1: 169,345 km (0.099 R)
• M2: 598,242 km (0.073 R)
• M3: 1,106,426 km (0.083 R)
• M4: 1,602,941 km (0.096 R)
• M5: 2,096,764 km (0.12 R)
• M6: 2,651,024 km (0.1 R)
• M7: 3,159,208 km (0.09 R)
• M8: 3,839,130 km (0.102 R)
• M9: 4,448,741 km (0.076 R)
• M10: 5,458,677 km (0.063 R)
• M11: 6,213,248 km (0.04 R)
• M12: 6,734,298 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 507.4

Radius: 11.1

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.03 AU - 3.23 AU

Year: 2798 Days

Day: 11.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 53,437,988 km

• M1: 138,228 km (0.069 R)
• M2: 529,427 km (0.049 R)
• M3: 894,296 km (0.113 R)
• M4: 1,706,762 km (0.097 R)
• M5: 2,124,140 km (0.1 R)
• M6: 3,102,660 km (0.094 R)
• M7: 3,566,413 km (0.087 R)
• M8: 5,384,327 km (0.056 R)
• M9: 6,812,837 km (0.079 R)
• M10: 7,844,912 km (0.092 R)
• M11: 8,479,806 km (0.116 R)
• M12: 10,515,982 km (0.119 R)
• M13: 14,571,281 km (0.112 R)
• M14: 16,379,620 km (0.109 R)
• M15: 16,841,130 km (0.092 R)
• M16: 17,417,082 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37.5

Radius: 14.7

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 2.83 AU - 3.33 AU

Year: 3546 Days

Day: 12.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,437,988 km

• M1: 184,753 km (0.042 R)
• M2: 700,716 km (0.108 R)
• M3: 1,273,078 km (0.104 R)
• M4: 2,798,677 km (0.106 R)
• M5: 4,028,222 km (0.086 R)
• M6: 6,355,366 km (0.058 R)
• M7: 7,300,675 km (0.11 R)
• M8: 8,592,602 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.2

Radius: 8.9

Gravity: 10.03 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 3.3 AU - 4.74 AU

Year: 5287 Days

Day: 6.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 53,437,988 km

• M1: 111,151 km (0.117 R)
• M2: 455,376 km (0.115 R)
• M3: 1,196,035 km (0.095 R)
• M4: 1,493,735 km (0.102 R)
• M5: 2,179,491 km (0.086 R)
• M6: 3,474,411 km (0.098 R)
• M7: 3,831,351 km (0.108 R)
• M8: 4,619,133 km (0.111 R)
• M9: 4,996,270 km (0.102 R)
• M10: 6,252,144 km (0.066 R)
• M11: 7,058,028 km (0.037 R)
• M12: 7,931,679 km (0.088 R)
• M13: 8,434,029 km (0.104 R)
• M14: 9,081,189 km (0.086 R)
• M15: 10,612,174 km (0.067 R)
• M16: 12,512,815 km (0.093 R)
• M17: 13,570,771 km (0.047 R)
• M18: 16,045,568 km (0.062 R)
• M19: 18,537,271 km (0.064 R)
• M20: 19,078,516 km (0.104 R)
• M21: 20,549,512 km (0.103 R)
• M22: 21,497,214 km (0.073 R)
• M23: 24,434,269 km (0.112 R)
• M24: 25,663,964 km (0.108 R)
• M25: 29,600,033 km (0.1 R)
• M26: 32,632,083 km (0.11 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 756.8

Radius: 5.9

Gravity: 21.74 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 5.97 AU - 7.29 AU

Year: 11199 Days

Day: 20.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 53,437,988 km

• M1: 73,453 km (0.12 R)
• M2: 283,787 km (0.1 R)
• M3: 469,139 km (0.091 R)
• M4: 1,282,951 km (0.11 R)
• M5: 2,134,014 km (0.106 R)
• M6: 2,604,948 km (0.096 R)
• M7: 3,437,759 km (0.07 R)
• M8: 3,832,697 km (0.073 R)
• M9: 4,936,281 km (0.047 R)
• M10: 5,335,707 km (0.106 R)
• M11: 6,275,032 km (0.111 R)
• M12: 6,744,022 km (0.043 R)
• M13: 7,110,686 km (0.106 R)
• M14: 7,620,216 km (0.117 R)
• M15: 8,291,013 km (0.109 R)
• M16: 8,617,137 km (0.077 R)
• M17: 9,647,267 km (0.057 R)
• M18: 10,593,474 km (0.101 R)
• M19: 11,428,081 km (0.11 R)
• M20: 19,991,661 km (0.075 R)
• M21: 20,325,414 km (0.082 R)
• M22: 24,246,673 km (0.106 R)
• M23: 30,366,573 km (0.062 R)
• M24: 31,929,272 km (0.061 R)
• M25: 33,544,779 km (0.117 R)
• M26: 34,016,312 km (0.084 R)
• M27: 34,372,654 km (0.051 R)
• M28: 40,420,148 km (0.105 R)
• M29: 42,035,655 km (0.101 R)
• M30: 44,822,963 km (0.113 R)
• M31: 45,108,246 km (0.089 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 246 - 14,469 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit