🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.45 AU - 0.57 AU

Year: 235 Days

Day: 36.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,744,784 km

• M1: 41,887 km (0.039 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.48 AU - 0.62 AU

Year: 263 Days

Day: 12.3 Hours

Environment

Temp: -113 °C

Axial Tilt: 29.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 793.6

Radius: 8.7

Gravity: 10.48 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.72 AU - 1.08 AU

Year: 551 Days

Day: 9 Hours

Environment

Temp: -160 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,744,784 km

• M1: 108,159 km (0.104 R)
• M2: 398,080 km (0.094 R)
• M3: 839,842 km (0.075 R)
• M4: 1,147,715 km (0.106 R)
• M5: 1,546,393 km (0.109 R)
• M6: 1,853,667 km (0.101 R)
• M7: 2,192,357 km (0.043 R)
• M8: 2,572,335 km (0.101 R)
• M9: 3,175,514 km (0.091 R)
• M10: 3,869,798 km (0.082 R)
• M11: 4,855,199 km (0.046 R)
• M12: 7,206,279 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.3

Radius: 8.6

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.4 AU - 3 AU

Year: 2865 Days

Day: 9 Hours

Environment

Temp: -202 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,744,784 km

• M1: 107,112 km (0.09 R)
• M2: 805,734 km (0.106 R)
• M3: 1,282,353 km (0.117 R)
• M4: 1,971,401 km (0.089 R)
• M5: 5,191,944 km (0.096 R)
• M6: 7,410,630 km (0.083 R)
• M7: 8,201,853 km (0.115 R)
• M8: 8,791,717 km (0.094 R)
• M9: 9,476,277 km (0.055 R)
• M10: 10,914,361 km (0.059 R)
• M11: 11,666,390 km (0.045 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 76.2

Radius: 6.9

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 5.59 AU - 7.67 AU

Year: 11023 Days

Day: 19.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 72,744,784 km

• M1: 92,003 km (0.11 R)
• M2: 492,327 km (0.074 R)
• M3: 1,201,121 km (0.08 R)
• M4: 1,473,838 km (0.05 R)
• M5: 2,075,820 km (0.112 R)
• M6: 2,304,705 km (0.114 R)
• M7: 3,023,074 km (0.09 R)
• M8: 3,434,019 km (0.092 R)
• M9: 5,018,560 km (0.096 R)
• M10: 5,433,694 km (0.09 R)
• M11: 6,186,022 km (0.056 R)
• M12: 9,427,059 km (0.073 R)
• M13: 9,661,030 km (0.096 R)
• M14: 16,061,276 km (0.114 R)
• M15: 17,134,641 km (0.083 R)
• M16: 17,718,521 km (0.115 R)
• M17: 21,705,604 km (0.1 R)
• M18: 24,160,056 km (0.091 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 307.1

Radius: 6.5

Gravity: 7.27 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 8.54 AU - 10.26 AU

Year: 18608 Days

Day: 20.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 72,744,784 km

• M1: 80,783 km (0.111 R)
• M2: 367,712 km (0.094 R)
• M3: 572,361 km (0.034 R)
• M4: 847,023 km (0.112 R)
• M5: 1,135,747 km (0.102 R)
• M6: 1,607,280 km (0.101 R)
• M7: 2,054,428 km (0.115 R)
• M8: 3,317,931 km (0.095 R)
• M9: 3,984,838 km (0.106 R)
• M10: 4,833,956 km (0.062 R)
• M11: 11,062,613 km (0.09 R)
• M12: 12,722,102 km (0.11 R)
• M13: 13,161,621 km (0.12 R)
• M14: 18,525,452 km (0.035 R)
• M15: 19,582,960 km (0.116 R)
• M16: 21,113,047 km (0.099 R)
• M17: 28,138,013 km (0.119 R)
• M18: 32,229,814 km (0.095 R)
• M19: 32,461,541 km (0.082 R)
• M20: 34,115,794 km (0.09 R)
• M21: 40,079,514 km (0.12 R)
• M22: 48,502,771 km (0.051 R)
• M23: 53,855,084 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 606.5

Radius: 6.8

Gravity: 13.12 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 7.74 AU - 11.9 AU

Year: 19869 Days

Day: 24.7 Hours

Environment

Temp: -236 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 72,744,784 km

• M1: 87,365 km (0.077 R)
• M2: 393,442 km (0.054 R)
• M3: 868,864 km (0.088 R)
• M4: 1,261,260 km (0.105 R)
• M5: 1,714,092 km (0.061 R)
• M6: 2,625,143 km (0.119 R)
• M7: 3,120,462 km (0.099 R)
• M8: 5,203,164 km (0.116 R)
• M9: 6,273,985 km (0.108 R)
• M10: 6,661,743 km (0.114 R)
• M11: 8,020,241 km (0.112 R)
• M12: 11,273,546 km (0.063 R)
• M13: 11,717,702 km (0.101 R)
• M14: 12,913,288 km (0.112 R)
• M15: 13,329,320 km (0.102 R)
• M16: 15,390,031 km (0.103 R)
• M17: 16,496,008 km (0.049 R)
• M18: 19,221,382 km (0.072 R)
• M19: 19,855,228 km (0.086 R)
• M20: 20,223,687 km (0.056 R)
• M21: 22,036,066 km (0.066 R)
• M22: 26,200,571 km (0.113 R)
• M23: 27,431,462 km (0.059 R)
• M24: 37,847,364 km (0.083 R)
• M25: 47,274,573 km (0.056 R)
• M26: 55,564,389 km (0.045 R)
• M27: 57,219,540 km (0.081 R)
• M28: 63,370,406 km (0.088 R)
• M29: 66,194,664 km (0.117 R)
• M30: 66,604,862 km (0.086 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 557 - 12,545 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit