🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 47.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 38.4 °

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: 4.74

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.49 AU - 0.75 AU

Year: 315 Days

Day: 42.4 Hours

Environment

Temp: -121 °C

Axial Tilt: 27.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 19,806,728 km

• M1: 421,417 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.8

Radius: 10.5

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.9 AU - 0.96 AU

Year: 579 Days

Day: 8.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 19,806,728 km

• M1: 130,599 km (0.075 R)
• M2: 555,158 km (0.071 R)
• M3: 1,026,840 km (0.068 R)
• M4: 1,464,563 km (0.059 R)
• M5: 1,811,032 km (0.12 R)
• M6: 2,508,008 km (0.076 R)
• M7: 3,075,283 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.9

Radius: 14.3

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.79 AU - 1.11 AU

Year: 598 Days

Day: 13.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 19,806,728 km

• M1: 177,872 km (0.08 R)
• M2: 628,012 km (0.075 R)
• M3: 1,073,215 km (0.091 R)
• M4: 2,078,214 km (0.077 R)
• M5: 3,163,247 km (0.06 R)
• M6: 3,903,308 km (0.08 R)
• M7: 4,428,546 km (0.114 R)
• M8: 5,444,914 km (0.107 R)
• M9: 6,256,632 km (0.096 R)
• M10: 7,105,600 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.7

Radius: 11.8

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.97 AU - 1.43 AU

Year: 849 Days

Day: 14.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 19,806,728 km

• M1: 151,991 km (0.056 R)
• M2: 578,196 km (0.035 R)
• M3: 1,121,984 km (0.06 R)
• M4: 1,557,613 km (0.077 R)
• M5: 1,948,512 km (0.075 R)
• M6: 2,416,903 km (0.098 R)
• M7: 3,240,888 km (0.089 R)
• M8: 3,658,266 km (0.098 R)
• M9: 4,585,025 km (0.085 R)
• M10: 5,000,758 km (0.076 R)
• M11: 5,461,519 km (0.038 R)
• M12: 6,056,171 km (0.1 R)
• M13: 6,513,342 km (0.059 R)
• M14: 7,521,781 km (0.111 R)
• M15: 8,849,462 km (0.091 R)
• M16: 9,995,681 km (0.049 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.3

Radius: 9.9

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.63 AU - 1.71 AU

Year: 1393 Days

Day: 11.1 Hours

Environment

Temp: -188 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 19,806,728 km

• M1: 123,269 km (0.118 R)
• M2: 448,195 km (0.059 R)
• M3: 883,824 km (0.096 R)
• M4: 1,526,497 km (0.077 R)
• M5: 2,632,175 km (0.108 R)
• M6: 3,362,362 km (0.088 R)
• M7: 3,775,401 km (0.116 R)
• M8: 4,151,191 km (0.085 R)
• M9: 4,684,807 km (0.111 R)
• M10: 5,140,033 km (0.064 R)
• M11: 5,452,543 km (0.089 R)
• M12: 5,777,919 km (0.082 R)
• M13: 6,467,714 km (0.12 R)
• M14: 6,882,549 km (0.062 R)
• M15: 7,393,127 km (0.077 R)
• M16: 8,094,442 km (0.089 R)
• M17: 8,809,968 km (0.098 R)
• M18: 9,350,914 km (0.097 R)
• M19: 10,041,907 km (0.054 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602

Radius: 12.1

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.66 AU - 2.54 AU

Year: 1965 Days

Day: 8 Hours

Environment

Temp: -198 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 19,806,728 km

• M1: 152,739 km (0.104 R)
• M2: 577,897 km (0.102 R)
• M3: 973,882 km (0.07 R)
• M4: 1,468,453 km (0.109 R)
• M5: 2,048,444 km (0.113 R)
• M6: 2,503,670 km (0.091 R)
• M7: 3,133,327 km (0.066 R)
• M8: 5,133,301 km (0.117 R)
• M9: 8,287,124 km (0.12 R)
• M10: 8,748,184 km (0.069 R)
• M11: 12,313,102 km (0.107 R)
• M12: 12,955,176 km (0.12 R)
• M13: 14,971,306 km (0.095 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.6

Radius: 11.3

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.85 AU - 3.25 AU

Year: 3439 Days

Day: 8.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 19,806,728 km

• M1: 144,960 km (0.065 R)
• M2: 523,293 km (0.094 R)
• M3: 886,517 km (0.104 R)
• M4: 2,525,810 km (0.117 R)
• M5: 2,889,782 km (0.116 R)
• M6: 3,612,789 km (0.107 R)
• M7: 5,692,349 km (0.109 R)
• M8: 6,081,901 km (0.115 R)
• M9: 6,857,118 km (0.108 R)
• M10: 7,542,276 km (0.102 R)
• M11: 9,330,270 km (0.112 R)
• M12: 10,209,606 km (0.106 R)
• M13: 12,303,527 km (0.101 R)
• M14: 12,868,708 km (0.065 R)
• M15: 13,911,405 km (0.078 R)
• M16: 14,334,318 km (0.105 R)
• M17: 15,058,372 km (0.03 R)
• M18: 16,010,263 km (0.105 R)
• M19: 16,737,010 km (0.057 R)
• M20: 17,215,723 km (0.103 R)
• M21: 17,813,217 km (0.098 R)
• M22: 19,222,578 km (0.053 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 347 - 15,211 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit