🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.46 AU - 0.62 AU

Year: 260 Days

Day: 31.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.07

Radius: 1.03

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.59 AU - 0.69 AU

Year: 336 Days

Day: 45.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 10.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,229,364 km

• M1: 565,779 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741.6

Radius: 14

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.61 AU - 0.87 AU

Year: 418 Days

Day: 11.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 77,229,364 km

• M1: 181,612 km (0.07 R)
• M2: 741,108 km (0.107 R)
• M3: 1,428,660 km (0.095 R)
• M4: 1,872,666 km (0.049 R)
• M5: 2,392,668 km (0.078 R)
• M6: 4,132,791 km (0.076 R)
• M7: 5,736,480 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.9

Radius: 11.8

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.01 AU - 1.03 AU

Year: 676 Days

Day: 7.5 Hours

Environment

Temp: -164 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 77,229,364 km

• M1: 146,756 km (0.086 R)
• M2: 521,947 km (0.113 R)
• M3: 1,153,699 km (0.106 R)
• M4: 1,794,576 km (0.088 R)
• M5: 2,409,423 km (0.076 R)
• M6: 2,784,016 km (0.028 R)
• M7: 3,260,186 km (0.042 R)
• M8: 3,846,760 km (0.105 R)
• M9: 4,518,454 km (0.099 R)
• M10: 4,957,973 km (0.108 R)
• M11: 6,552,536 km (0.114 R)
• M12: 7,356,774 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.7

Radius: 13.4

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.93 AU - 1.55 AU

Year: 906 Days

Day: 12.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,229,364 km

• M1: 175,030 km (0.055 R)
• M2: 665,711 km (0.11 R)
• M3: 1,114,355 km (0.103 R)
• M4: 1,694,645 km (0.103 R)
• M5: 2,199,537 km (0.043 R)
• M6: 3,081,866 km (0.093 R)
• M7: 3,612,340 km (0.101 R)
• M8: 4,056,945 km (0.099 R)
• M9: 4,664,611 km (0.116 R)
• M10: 6,553,284 km (0.093 R)
• M11: 7,327,304 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.2

Radius: 8.9

Gravity: 9.71 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 1.43 AU - 2.17 AU

Year: 1584 Days

Day: 7.7 Hours

Environment

Temp: -179 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 77,229,364 km

• M1: 110,702 km (0.032 R)
• M2: 471,084 km (0.089 R)
• M3: 1,137,841 km (0.111 R)
• M4: 1,772,436 km (0.025 R)
• M5: 2,290,343 km (0.028 R)
• M6: 2,625,742 km (0.104 R)
• M7: 4,215,967 km (0.047 R)
• M8: 4,928,502 km (0.085 R)
• M9: 6,072,477 km (0.111 R)
• M10: 8,092,347 km (0.093 R)
• M11: 10,043,253 km (0.097 R)
• M12: 12,798,547 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.8

Radius: 9.6

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.2 AU - 4.52 AU

Year: 4975 Days

Day: 12.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 77,229,364 km

• M1: 119,379 km (0.076 R)
• M2: 527,482 km (0.029 R)
• M3: 1,390,363 km (0.098 R)
• M4: 1,703,172 km (0.031 R)
• M5: 2,506,064 km (0.073 R)
• M6: 2,904,891 km (0.098 R)
• M7: 3,423,547 km (0.106 R)
• M8: 4,113,193 km (0.07 R)
• M9: 4,432,435 km (0.116 R)
• M10: 7,123,551 km (0.068 R)
• M11: 7,619,618 km (0.072 R)
• M12: 8,904,963 km (0.095 R)
• M13: 9,441,870 km (0.116 R)
• M14: 9,758,269 km (0.096 R)
• M15: 10,580,609 km (0.091 R)
• M16: 11,227,021 km (0.106 R)
• M17: 11,762,881 km (0.088 R)
• M18: 12,503,988 km (0.048 R)
• M19: 13,226,696 km (0.071 R)
• M20: 15,671,873 km (0.112 R)
• M21: 16,626,158 km (0.102 R)
• M22: 17,857,797 km (0.102 R)
• M23: 18,774,084 km (0.11 R)
• M24: 20,370,443 km (0.099 R)
• M25: 22,403,029 km (0.104 R)
• M26: 23,038,371 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108.4

Radius: 10.3

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 4.13 AU - 4.25 AU

Year: 5626 Days

Day: 7.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,229,364 km

• M1: 128,056 km (0.057 R)
• M2: 724,802 km (0.118 R)
• M3: 1,098,198 km (0.032 R)
• M4: 1,684,322 km (0.061 R)
• M5: 3,208,725 km (0.084 R)
• M6: 5,668,114 km (0.109 R)
• M7: 6,067,839 km (0.077 R)
• M8: 6,702,882 km (0.077 R)
• M9: 7,798,088 km (0.047 R)
• M10: 10,267,351 km (0.064 R)
• M11: 13,654,546 km (0.111 R)
• M12: 14,978,786 km (0.038 R)
• M13: 16,287,019 km (0.078 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.4

Radius: 10.1

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.01 AU - 5.09 AU

Year: 6367 Days

Day: 14.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 77,229,364 km

• M1: 126,261 km (0.111 R)
• M2: 464,651 km (0.097 R)
• M3: 1,548,188 km (0.119 R)
• M4: 4,690,940 km (0.106 R)
• M5: 5,657,343 km (0.096 R)
• M6: 6,931,617 km (0.115 R)
• M7: 7,396,119 km (0.109 R)
• M8: 11,085,202 km (0.088 R)
• M9: 16,115,131 km (0.116 R)
• M10: 17,775,518 km (0.118 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 898.2

Radius: 7

Gravity: 18.33 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 8.34 AU - 9.76 AU

Year: 17860 Days

Day: 23.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 77,229,364 km

• M1: 88,562 km (0.117 R)
• M2: 452,833 km (0.096 R)
• M3: 989,440 km (0.076 R)
• M4: 1,474,437 km (0.07 R)
• M5: 1,988,006 km (0.076 R)
• M6: 2,884,546 km (0.09 R)
• M7: 3,394,525 km (0.072 R)
• M8: 3,626,552 km (0.111 R)
• M9: 4,950,493 km (0.069 R)
• M10: 6,930,869 km (0.057 R)
• M11: 7,401,654 km (0.069 R)
• M12: 8,147,399 km (0.045 R)
• M13: 8,997,115 km (0.08 R)
• M14: 10,996,640 km (0.056 R)
• M15: 12,643,563 km (0.103 R)
• M16: 12,921,666 km (0.044 R)
• M17: 13,926,814 km (0.076 R)
• M18: 15,451,964 km (0.112 R)
• M19: 22,467,356 km (0.056 R)
• M20: 25,428,945 km (0.098 R)
• M21: 27,464,523 km (0.098 R)
• M22: 46,301,289 km (0.105 R)
• M23: 67,276,706 km (0.066 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 404 - 11,458 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit