🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.88

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.53 AU - 0.61 AU

Year: 282 Days

Day: 44.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.7

Radius: 8.6

Gravity: 11.08 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.55 AU - 0.83 AU

Year: 376 Days

Day: 9.9 Hours

Environment

Temp: -143 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 83,740,557 km

• M1: 106,962 km (0.053 R)
• M2: 421,866 km (0.103 R)
• M3: 699,968 km (0.106 R)
• M4: 989,440 km (0.109 R)
• M5: 1,275,621 km (0.115 R)
• M6: 1,660,387 km (0.107 R)
• M7: 2,004,611 km (0.04 R)
• M8: 2,415,108 km (0.073 R)
• M9: 3,393,329 km (0.095 R)
• M10: 3,822,974 km (0.119 R)
• M11: 4,316,347 km (0.118 R)
• M12: 4,806,580 km (0.079 R)
• M13: 5,143,324 km (0.074 R)
• M14: 5,528,539 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446.6

Radius: 9

Gravity: 5.51 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.73 AU - 0.79 AU

Year: 435 Days

Day: 8.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 83,740,557 km

• M1: 111,899 km (0.116 R)
• M2: 398,678 km (0.073 R)
• M3: 717,771 km (0.094 R)
• M4: 1,023,249 km (0.095 R)
• M5: 1,315,564 km (0.1 R)
• M6: 1,835,865 km (0.11 R)
• M7: 2,123,991 km (0.085 R)
• M8: 2,763,222 km (0.038 R)
• M9: 3,275,445 km (0.104 R)
• M10: 3,911,984 km (0.108 R)
• M11: 4,259,949 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 598.7

Radius: 9.8

Gravity: 6.23 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.04 AU - 1.38 AU

Year: 873 Days

Day: 11.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 83,740,557 km

• M1: 122,072 km (0.119 R)
• M2: 444,605 km (0.058 R)
• M3: 885,021 km (0.046 R)
• M4: 1,538,614 km (0.107 R)
• M5: 2,053,530 km (0.114 R)
• M6: 2,443,532 km (0.117 R)
• M7: 3,147,838 km (0.039 R)
• M8: 3,526,770 km (0.087 R)
• M9: 4,409,696 km (0.076 R)
• M10: 4,938,675 km (0.09 R)
• M11: 5,246,547 km (0.093 R)
• M12: 6,185,573 km (0.085 R)
• M13: 6,983,079 km (0.088 R)
• M14: 7,441,896 km (0.118 R)
• M15: 8,860,682 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.8

Radius: 11.2

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.65 AU - 1.77 AU

Year: 1467 Days

Day: 10.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 83,740,557 km

• M1: 139,276 km (0.107 R)
• M2: 506,538 km (0.099 R)
• M3: 1,663,229 km (0.062 R)
• M4: 2,790,898 km (0.072 R)
• M5: 3,597,530 km (0.096 R)
• M6: 8,078,883 km (0.074 R)
• M7: 9,554,966 km (0.089 R)
• M8: 10,700,287 km (0.118 R)
• M9: 11,135,617 km (0.087 R)
• M10: 11,934,769 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589.1

Radius: 13

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 2.31 AU - 3.13 AU

Year: 2943 Days

Day: 12.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 83,740,557 km

• M1: 161,715 km (0.116 R)
• M2: 600,785 km (0.116 R)
• M3: 1,654,403 km (0.072 R)
• M4: 2,544,211 km (0.11 R)
• M5: 3,173,868 km (0.104 R)
• M6: 3,581,672 km (0.063 R)
• M7: 4,999,112 km (0.108 R)
• M8: 5,783,454 km (0.081 R)
• M9: 6,259,773 km (0.077 R)
• M10: 7,848,503 km (0.06 R)
• M11: 8,737,114 km (0.059 R)
• M12: 10,137,949 km (0.118 R)
• M13: 12,061,328 km (0.105 R)
• M14: 14,169,910 km (0.08 R)
• M15: 17,695,633 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.9

Radius: 11.9

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 3.86 AU - 4.68 AU

Year: 5788 Days

Day: 14.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 83,740,557 km

• M1: 148,102 km (0.094 R)
• M2: 770,728 km (0.057 R)
• M3: 1,246,300 km (0.104 R)
• M4: 3,674,124 km (0.062 R)
• M5: 4,142,814 km (0.078 R)
• M6: 5,130,160 km (0.053 R)
• M7: 7,234,403 km (0.052 R)
• M8: 7,816,190 km (0.056 R)
• M9: 10,082,896 km (0.111 R)
• M10: 11,735,654 km (0.076 R)
• M11: 13,022,046 km (0.094 R)
• M12: 14,117,102 km (0.118 R)
• M13: 16,334,442 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.9

Radius: 8.3

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 4.49 AU - 4.97 AU

Year: 6748 Days

Day: 6.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 83,740,557 km

• M1: 107,411 km (0.058 R)
• M2: 694,882 km (0.116 R)
• M3: 3,061,969 km (0.096 R)
• M4: 3,322,569 km (0.095 R)
• M5: 7,541,827 km (0.1 R)
• M6: 9,036,459 km (0.11 R)
• M7: 9,606,577 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 828.7

Radius: 4.3

Gravity: 44.82 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 9.03 AU - 11.13 AU

Year: 20994 Days

Day: 15.2 Hours

Environment

Temp: -240 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 83,740,557 km

• M1: 69,862 km (0.081 R)
• M2: 259,403 km (0.119 R)
• M3: 723,007 km (0.118 R)
• M4: 1,019,509 km (0.116 R)
• M5: 1,254,229 km (0.092 R)
• M6: 1,628,522 km (0.107 R)
• M7: 1,930,261 km (0.113 R)
• M8: 2,094,520 km (0.099 R)
• M9: 2,427,824 km (0.092 R)
• M10: 2,694,108 km (0.115 R)
• M11: 4,396,382 km (0.032 R)
• M12: 4,681,965 km (0.11 R)
• M13: 5,906,124 km (0.075 R)
• M14: 6,121,694 km (0.092 R)
• M15: 9,366,622 km (0.115 R)
• M16: 9,541,951 km (0.111 R)
• M17: 10,203,622 km (0.117 R)
• M18: 10,767,456 km (0.049 R)
• M19: 12,025,425 km (0.098 R)
• M20: 12,940,515 km (0.078 R)
• M21: 14,052,925 km (0.071 R)
• M22: 14,987,762 km (0.08 R)
• M23: 15,963,140 km (0.087 R)
• M24: 25,791,122 km (0.119 R)
• M25: 31,813,034 km (0.073 R)
• M26: 32,209,469 km (0.034 R)
• M27: 37,226,832 km (0.088 R)
• M28: 47,731,893 km (0.079 R)
• M29: 61,061,363 km (0.07 R)
• M30: 61,673,517 km (0.118 R)
• M31: 65,007,306 km (0.1 R)
• M32: 67,150,894 km (0.083 R)
• M33: 68,899,244 km (0.031 R)
• M34: 76,196,479 km (0.113 R)
• M35: 83,740,550 km (0.05 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 449 - 18,604 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit