🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.64

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.52 AU - 0.58 AU

Year: 263 Days

Day: 38.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 30,478,284 km

• M1: 130,001 km (0.093 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.46

Radius: 1.16

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.54 AU - 0.64 AU

Year: 293 Days

Day: 38.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 14.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 38.5

Radius: 11.5

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.73 AU - 0.77 AU

Year: 419 Days

Day: 7.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 30,478,284 km

• M1: 143,165 km (0.109 R)
• M2: 661,372 km (0.117 R)
• M3: 1,060,350 km (0.038 R)
• M4: 1,609,523 km (0.029 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.7

Radius: 13.5

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.83 AU - 1.19 AU

Year: 655 Days

Day: 13.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 30,478,284 km

• M1: 167,998 km (0.079 R)
• M2: 889,958 km (0.058 R)
• M3: 1,660,536 km (0.11 R)
• M4: 2,085,394 km (0.068 R)
• M5: 3,270,359 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 857.7

Radius: 11.2

Gravity: 6.84 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.09 AU - 1.51 AU

Year: 957 Days

Day: 13.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 30,478,284 km

• M1: 140,921 km (0.064 R)
• M2: 581,188 km (0.119 R)
• M3: 1,048,232 km (0.116 R)
• M4: 1,410,110 km (0.111 R)
• M5: 1,791,584 km (0.065 R)
• M6: 2,706,973 km (0.077 R)
• M7: 3,362,811 km (0.074 R)
• M8: 4,290,168 km (0.118 R)
• M9: 4,860,285 km (0.087 R)
• M10: 5,241,909 km (0.092 R)
• M11: 6,152,512 km (0.101 R)
• M12: 6,808,349 km (0.063 R)
• M13: 7,385,946 km (0.098 R)
• M14: 7,737,651 km (0.058 R)
• M15: 8,584,225 km (0.063 R)
• M16: 9,229,889 km (0.104 R)
• M17: 9,638,591 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.9

Radius: 10.7

Gravity: 8.32 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.4 AU - 2.02 AU

Year: 1444 Days

Day: 9.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 30,478,284 km

• M1: 133,142 km (0.084 R)
• M2: 808,277 km (0.11 R)
• M3: 1,277,267 km (0.119 R)
• M4: 1,871,021 km (0.104 R)
• M5: 2,892,924 km (0.082 R)
• M6: 4,906,212 km (0.083 R)
• M7: 5,312,071 km (0.081 R)
• M8: 6,873,573 km (0.025 R)
• M9: 7,632,783 km (0.101 R)
• M10: 8,062,128 km (0.114 R)
• M11: 8,477,263 km (0.06 R)
• M12: 11,130,082 km (0.073 R)
• M13: 14,079,404 km (0.116 R)
• M14: 14,595,367 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280

Radius: 12.7

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.71 AU - 3.79 AU

Year: 4689 Days

Day: 5.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 30,478,284 km

• M1: 157,975 km (0.1 R)
• M2: 656,435 km (0.084 R)
• M3: 1,552,826 km (0.083 R)
• M4: 1,973,346 km (0.082 R)
• M5: 2,984,926 km (0.102 R)
• M6: 3,532,455 km (0.101 R)
• M7: 4,738,363 km (0.058 R)
• M8: 5,718,678 km (0.113 R)
• M9: 6,257,230 km (0.114 R)
• M10: 7,008,062 km (0.068 R)
• M11: 7,785,672 km (0.115 R)
• M12: 8,346,813 km (0.053 R)
• M13: 9,005,792 km (0.112 R)
• M14: 9,774,276 km (0.074 R)
• M15: 10,625,787 km (0.114 R)
• M16: 11,400,255 km (0.101 R)
• M17: 12,168,590 km (0.065 R)
• M18: 14,582,651 km (0.101 R)
• M19: 16,324,120 km (0.093 R)
• M20: 16,753,316 km (0.097 R)
• M21: 17,522,548 km (0.104 R)
• M22: 19,369,184 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 41.8

Radius: 8.6

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 4.17 AU - 4.53 AU

Year: 5858 Days

Day: 13.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 30,478,284 km

• M1: 106,962 km (0.053 R)
• M2: 617,540 km (0.079 R)
• M3: 1,064,090 km (0.099 R)
• M4: 3,368,196 km (0.11 R)
• M5: 6,791,444 km (0.101 R)
• M6: 7,097,222 km (0.046 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 502.7

Radius: 11.7

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 3.99 AU - 4.77 AU

Year: 5919 Days

Day: 8.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 30,478,284 km

• M1: 145,858 km (0.09 R)
• M2: 580,739 km (0.094 R)
• M3: 980,913 km (0.104 R)
• M4: 1,401,882 km (0.094 R)
• M5: 2,205,671 km (0.064 R)
• M6: 2,800,472 km (0.067 R)
• M7: 3,416,965 km (0.03 R)
• M8: 4,385,910 km (0.066 R)
• M9: 5,558,458 km (0.071 R)
• M10: 7,064,311 km (0.084 R)
• M11: 7,658,065 km (0.101 R)
• M12: 11,609,244 km (0.066 R)
• M13: 11,994,009 km (0.079 R)
• M14: 14,155,848 km (0.109 R)
• M15: 14,762,617 km (0.109 R)
• M16: 17,868,269 km (0.098 R)
• M17: 20,466,036 km (0.048 R)
• M18: 21,385,315 km (0.102 R)
• M19: 23,154,459 km (0.101 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: 309 - 16,888 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit