🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.98

Radius: 0.99

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.64 AU - 0.7 AU

Year: 349 Days

Day: 42.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.8

Radius: 8.3

Gravity: 6.99 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.83 AU - 1.25 AU

Year: 674 Days

Day: 7.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,982,187 km

• M1: 103,223 km (0.109 R)
• M2: 401,521 km (0.091 R)
• M3: 771,775 km (0.085 R)
• M4: 1,031,777 km (0.095 R)
• M5: 1,325,288 km (0.109 R)
• M6: 1,859,950 km (0.053 R)
• M7: 3,599,923 km (0.106 R)
• M8: 3,898,221 km (0.068 R)
• M9: 4,169,293 km (0.064 R)
• M10: 4,560,491 km (0.07 R)
• M11: 4,976,224 km (0.063 R)
• M12: 6,145,481 km (0.098 R)
• M13: 6,474,297 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923.3

Radius: 12.6

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 1.1 AU - 1.72 AU

Year: 1065 Days

Day: 8.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 50,982,187 km

• M1: 156,629 km (0.107 R)
• M2: 613,950 km (0.074 R)
• M3: 1,136,196 km (0.118 R)
• M4: 1,580,202 km (0.054 R)
• M5: 2,730,012 km (0.075 R)
• M6: 3,262,281 km (0.085 R)
• M7: 3,929,038 km (0.082 R)
• M8: 4,610,606 km (0.092 R)
• M9: 5,704,765 km (0.119 R)
• M10: 6,120,797 km (0.039 R)
• M11: 6,698,993 km (0.082 R)
• M12: 7,364,254 km (0.119 R)
• M13: 7,831,897 km (0.092 R)
• M14: 8,514,363 km (0.068 R)
• M15: 9,811,676 km (0.111 R)
• M16: 10,282,759 km (0.083 R)
• M17: 11,544,468 km (0.056 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.9

Radius: 9.9

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.6 AU - 1.8 AU

Year: 1409 Days

Day: 6 Hours

Environment

Temp: -178 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,982,187 km

• M1: 123,119 km (0.113 R)
• M2: 459,864 km (0.084 R)
• M3: 829,221 km (0.119 R)
• M4: 1,177,036 km (0.109 R)
• M5: 1,517,072 km (0.094 R)
• M6: 1,923,081 km (0.078 R)
• M7: 2,289,745 km (0.086 R)
• M8: 2,874,822 km (0.086 R)
• M9: 3,638,819 km (0.108 R)
• M10: 3,980,201 km (0.081 R)
• M11: 4,342,976 km (0.111 R)
• M12: 5,547,837 km (0.058 R)
• M13: 6,500,925 km (0.114 R)
• M14: 7,356,924 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.7

Radius: 10.8

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 2.37 AU - 2.99 AU

Year: 2790 Days

Day: 12.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,982,187 km

• M1: 134,339 km (0.109 R)
• M2: 1,151,754 km (0.099 R)
• M3: 1,906,625 km (0.111 R)
• M4: 2,448,468 km (0.098 R)
• M5: 3,006,319 km (0.063 R)
• M6: 4,181,859 km (0.104 R)
• M7: 5,641,037 km (0.111 R)
• M8: 6,172,857 km (0.092 R)
• M9: 7,033,194 km (0.036 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 445.8

Radius: 12.5

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.57 AU - 3.33 AU

Year: 3222 Days

Day: 6.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 50,982,187 km

• M1: 162,164 km (0.114 R)
• M2: 558,150 km (0.092 R)
• M3: 1,193,043 km (0.08 R)
• M4: 1,663,080 km (0.07 R)
• M5: 2,065,049 km (0.052 R)
• M6: 3,038,482 km (0.099 R)
• M7: 3,741,742 km (0.101 R)
• M8: 4,173,182 km (0.101 R)
• M9: 5,160,827 km (0.059 R)
• M10: 5,647,320 km (0.093 R)
• M11: 6,656,357 km (0.088 R)
• M12: 8,357,883 km (0.099 R)
• M13: 9,739,569 km (0.104 R)
• M14: 10,333,024 km (0.077 R)
• M15: 10,754,890 km (0.104 R)
• M16: 11,429,577 km (0.096 R)
• M17: 16,035,396 km (0.104 R)
• M18: 17,720,466 km (0.029 R)
• M19: 19,231,554 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.3

Radius: 8

Gravity: 10.94 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 3.31 AU - 3.65 AU

Year: 4128 Days

Day: 10.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 50,982,187 km

• M1: 99,483 km (0.081 R)
• M2: 590,164 km (0.086 R)
• M3: 841,338 km (0.12 R)
• M4: 1,272,629 km (0.095 R)
• M5: 1,793,529 km (0.099 R)
• M6: 2,132,368 km (0.118 R)
• M7: 4,560,940 km (0.091 R)
• M8: 5,493,683 km (0.115 R)
• M9: 5,745,605 km (0.083 R)
• M10: 6,182,730 km (0.1 R)
• M11: 6,799,971 km (0.061 R)
• M12: 7,457,454 km (0.1 R)
• M13: 8,013,509 km (0.078 R)
• M14: 8,596,791 km (0.12 R)
• M15: 8,937,126 km (0.107 R)
• M16: 11,760,637 km (0.11 R)
• M17: 13,348,768 km (0.102 R)
• M18: 15,348,742 km (0.077 R)
• M19: 16,019,838 km (0.107 R)
• M20: 18,150,410 km (0.072 R)
• M21: 20,799,041 km (0.083 R)
• M22: 21,275,660 km (0.036 R)
• M23: 23,401,296 km (0.104 R)
• M24: 24,666,595 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.4

Radius: 14.3

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.85 AU - 4.33 AU

Year: 4325 Days

Day: 7.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,982,187 km

• M1: 189,092 km (0.056 R)
• M2: 871,408 km (0.086 R)
• M3: 2,363,198 km (0.081 R)
• M4: 4,365,864 km (0.066 R)
• M5: 6,847,543 km (0.113 R)
• M6: 10,501,322 km (0.077 R)
• M7: 11,421,049 km (0.103 R)
• M8: 13,698,527 km (0.069 R)
• M9: 15,850,194 km (0.111 R)
• M10: 17,495,920 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 501.1

Radius: 5.8

Gravity: 14.9 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 6.49 AU - 8.33 AU

Year: 12825 Days

Day: 17.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 50,982,187 km

• M1: 72,256 km (0.102 R)
• M2: 265,387 km (0.079 R)
• M3: 455,526 km (0.053 R)
• M4: 1,008,888 km (0.079 R)
• M5: 1,740,422 km (0.101 R)
• M6: 2,609,286 km (0.044 R)
• M7: 2,954,857 km (0.089 R)
• M8: 4,649,801 km (0.091 R)
• M9: 6,322,006 km (0.118 R)
• M10: 6,746,266 km (0.104 R)
• M11: 7,955,764 km (0.051 R)
• M12: 8,268,125 km (0.061 R)
• M13: 8,775,411 km (0.117 R)
• M14: 10,212,299 km (0.099 R)
• M15: 12,088,406 km (0.076 R)
• M16: 12,441,756 km (0.1 R)
• M17: 12,801,987 km (0.114 R)
• M18: 14,509,946 km (0.076 R)
• M19: 15,521,527 km (0.082 R)
• M20: 15,868,893 km (0.12 R)
• M21: 22,069,426 km (0.071 R)
• M22: 25,459,762 km (0.116 R)
• M23: 25,652,444 km (0.076 R)
• M24: 30,246,745 km (0.101 R)
• M25: 31,780,721 km (0.092 R)
• M26: 33,365,860 km (0.07 R)
• M27: 39,328,682 km (0.11 R)
• M28: 40,758,389 km (0.067 R)
• M29: 42,899,284 km (0.105 R)
• M30: 45,255,001 km (0.1 R)
• M31: 48,282,264 km (0.089 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: 536 - 16,598 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit