🌌 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: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 47.6 Hours

Environment

Temp: -127 °C

Axial Tilt: 23.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 22,779,972 km

• M1: 42,935 km (0.1 R)
• M2: 259,403 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.1

Radius: 11.1

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.82 AU - 1.18 AU

Year: 656 Days

Day: 7.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,779,972 km

• M1: 138,079 km (0.116 R)
• M2: 574,605 km (0.105 R)
• M3: 977,173 km (0.099 R)
• M4: 1,418,038 km (0.1 R)
• M5: 1,909,916 km (0.045 R)
• M6: 2,333,278 km (0.118 R)
• M7: 2,850,887 km (0.098 R)
• M8: 4,740,457 km (0.087 R)
• M9: 5,308,480 km (0.095 R)
• M10: 5,694,892 km (0.043 R)
• M11: 6,172,408 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.7

Radius: 10.4

Gravity: 2.39 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.9 AU - 1.3 AU

Year: 757 Days

Day: 8.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,779,972 km

• M1: 129,402 km (0.109 R)
• M2: 497,712 km (0.111 R)
• M3: 883,525 km (0.054 R)
• M4: 1,332,169 km (0.101 R)
• M5: 1,705,565 km (0.109 R)
• M6: 2,037,822 km (0.1 R)
• M7: 2,825,605 km (0.092 R)
• M8: 3,379,117 km (0.099 R)
• M9: 3,949,833 km (0.069 R)
• M10: 4,294,057 km (0.082 R)
• M11: 5,011,678 km (0.044 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.3

Radius: 11.6

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.41 AU - 1.63 AU

Year: 1229 Days

Day: 8.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 22,779,972 km

• M1: 164,707 km (0.115 R)
• M2: 727,644 km (0.118 R)
• M3: 1,148,164 km (0.117 R)
• M4: 1,617,901 km (0.097 R)
• M5: 2,406,132 km (0.071 R)
• M6: 4,516,958 km (0.11 R)
• M7: 4,981,759 km (0.081 R)
• M8: 5,707,308 km (0.057 R)
• M9: 6,998,637 km (0.109 R)
• M10: 7,368,892 km (0.061 R)
• M11: 9,156,437 km (0.067 R)
• M12: 10,151,412 km (0.081 R)
• M13: 10,886,387 km (0.05 R)
• M14: 11,317,378 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.7

Radius: 13.1

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.17 AU - 2.49 AU

Year: 2333 Days

Day: 11.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,779,972 km

• M1: 163,211 km (0.046 R)
• M2: 783,145 km (0.074 R)
• M3: 1,983,967 km (0.086 R)
• M4: 3,064,662 km (0.118 R)
• M5: 3,850,799 km (0.099 R)
• M6: 4,349,708 km (0.047 R)
• M7: 5,103,681 km (0.108 R)
• M8: 5,967,010 km (0.093 R)
• M9: 6,663,837 km (0.071 R)
• M10: 7,331,193 km (0.061 R)
• M11: 9,703,965 km (0.096 R)
• M12: 10,491,897 km (0.107 R)
• M13: 11,101,508 km (0.095 R)
• M14: 12,156,921 km (0.103 R)
• M15: 13,949,104 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 777.2

Radius: 14.3

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.03 AU - 3.35 AU

Year: 2894 Days

Day: 11.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 90.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 22,779,972 km

• M1: 177,872 km (0.092 R)
• M2: 629,059 km (0.08 R)
• M3: 1,076,506 km (0.094 R)
• M4: 1,629,869 km (0.079 R)
• M5: 3,005,421 km (0.112 R)
• M6: 3,463,191 km (0.112 R)
• M7: 4,091,053 km (0.115 R)
• M8: 5,865,433 km (0.112 R)
• M9: 6,501,075 km (0.104 R)
• M10: 7,274,496 km (0.082 R)
• M11: 8,075,293 km (0.083 R)
• M12: 9,404,620 km (0.098 R)
• M13: 11,244,973 km (0.089 R)
• M14: 12,900,273 km (0.111 R)
• M15: 18,662,783 km (0.117 R)
• M16: 19,373,672 km (0.057 R)
• M17: 20,536,197 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326.6

Radius: 14.1

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 3.59 AU - 3.89 AU

Year: 4745 Days

Day: 8.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,779,972 km

• M1: 178,321 km (0.101 R)
• M2: 902,225 km (0.086 R)
• M3: 1,526,646 km (0.095 R)
• M4: 2,492,450 km (0.028 R)
• M5: 3,244,927 km (0.066 R)
• M6: 3,956,714 km (0.06 R)
• M7: 4,654,588 km (0.075 R)
• M8: 5,382,232 km (0.086 R)
• M9: 6,354,469 km (0.105 R)
• M10: 9,447,106 km (0.11 R)
• M11: 11,235,847 km (0.063 R)
• M12: 12,367,256 km (0.094 R)
• M13: 15,685,038 km (0.075 R)
• M14: 17,265,689 km (0.089 R)
• M15: 18,652,311 km (0.12 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: 500 - 14,306 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit