🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.31

Radius: 1.79

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.48 AU - 0.64 AU

Year: 271 Days

Day: 15.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 43 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 913

Radius: 9.3

Gravity: 10.56 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.73 AU - 0.81 AU

Year: 436 Days

Day: 8.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 176 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 47,370,269 km

• M1: 115,639 km (0.107 R)
• M2: 508,483 km (0.078 R)
• M3: 885,171 km (0.059 R)
• M4: 1,195,736 km (0.106 R)
• M5: 1,713,793 km (0.084 R)
• M6: 2,404,337 km (0.107 R)
• M7: 2,846,548 km (0.099 R)
• M8: 3,787,369 km (0.069 R)
• M9: 4,143,412 km (0.095 R)
• M10: 4,703,955 km (0.039 R)
• M11: 5,214,533 km (0.094 R)
• M12: 5,743,960 km (0.064 R)
• M13: 6,308,841 km (0.032 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.3

Radius: 13.9

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.7 AU - 0.92 AU

Year: 471 Days

Day: 11.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 47,370,269 km

• M1: 173,534 km (0.12 R)
• M2: 703,858 km (0.076 R)
• M3: 1,228,647 km (0.077 R)
• M4: 1,892,413 km (0.08 R)
• M5: 2,737,192 km (0.103 R)
• M6: 3,610,844 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.6

Radius: 14.8

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.97 AU - 1.31 AU

Year: 786 Days

Day: 13 Hours

Environment

Temp: -167 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 47,370,269 km

• M1: 188,194 km (0.116 R)
• M2: 745,297 km (0.09 R)
• M3: 1,213,089 km (0.107 R)
• M4: 1,952,402 km (0.117 R)
• M5: 2,413,313 km (0.054 R)
• M6: 3,105,053 km (0.102 R)
• M7: 3,940,558 km (0.107 R)
• M8: 4,673,737 km (0.092 R)
• M9: 5,547,687 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219.1

Radius: 10.4

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.48 AU - 1.9 AU

Year: 1419 Days

Day: 12.8 Hours

Environment

Temp: -190 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,370,269 km

• M1: 130,449 km (0.079 R)
• M2: 519,105 km (0.07 R)
• M3: 1,018,462 km (0.095 R)
• M4: 1,350,570 km (0.098 R)
• M5: 2,713,406 km (0.101 R)
• M6: 3,941,006 km (0.117 R)
• M7: 4,730,135 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.1

Radius: 14.8

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 2.92 AU - 3.22 AU

Year: 3473 Days

Day: 13 Hours

Environment

Temp: -204 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 47,370,269 km

• M1: 185,651 km (0.089 R)
• M2: 694,134 km (0.112 R)
• M3: 1,370,765 km (0.12 R)
• M4: 2,657,157 km (0.094 R)
• M5: 3,688,186 km (0.093 R)
• M6: 4,462,056 km (0.03 R)
• M7: 5,810,830 km (0.118 R)
• M8: 6,392,467 km (0.047 R)
• M9: 7,353,783 km (0.085 R)
• M10: 8,478,609 km (0.117 R)
• M11: 9,376,944 km (0.081 R)
• M12: 10,101,297 km (0.077 R)
• M13: 10,577,916 km (0.085 R)
• M14: 11,152,970 km (0.097 R)
• M15: 13,050,918 km (0.114 R)
• M16: 13,761,209 km (0.118 R)
• M17: 15,104,598 km (0.047 R)
• M18: 15,571,493 km (0.1 R)
• M19: 16,974,422 km (0.037 R)
• M20: 17,993,931 km (0.083 R)
• M21: 18,577,812 km (0.056 R)
• M22: 20,031,005 km (0.117 R)
• M23: 21,169,595 km (0.115 R)
• M24: 21,754,971 km (0.057 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606.2

Radius: 14.3

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.3 AU - 4.96 AU

Year: 5419 Days

Day: 7.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,370,269 km

• M1: 177,872 km (0.096 R)
• M2: 1,290,730 km (0.07 R)
• M3: 1,940,434 km (0.067 R)
• M4: 2,803,913 km (0.053 R)
• M5: 4,966,500 km (0.066 R)
• M6: 6,912,319 km (0.097 R)
• M7: 10,211,700 km (0.052 R)
• M8: 13,422,669 km (0.079 R)
• M9: 13,953,741 km (0.077 R)
• M10: 17,254,319 km (0.097 R)
• M11: 18,722,772 km (0.063 R)
• M12: 23,936,108 km (0.082 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 340.7

Radius: 4.9

Gravity: 14.19 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 7.02 AU - 8.48 AU

Year: 13931 Days

Day: 24.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,370,269 km

• M1: 61,784 km (0.089 R)
• M2: 227,090 km (0.062 R)
• M3: 911,799 km (0.092 R)
• M4: 1,525,599 km (0.087 R)
• M5: 2,249,802 km (0.05 R)
• M6: 5,939,185 km (0.102 R)
• M7: 7,264,921 km (0.072 R)
• M8: 9,054,860 km (0.095 R)
• M9: 9,976,233 km (0.09 R)
• M10: 19,623,052 km (0.114 R)
• M11: 23,033,734 km (0.071 R)
• M12: 27,111,772 km (0.096 R)
• M13: 28,706,485 km (0.088 R)
• M14: 36,540,925 km (0.073 R)
• M15: 39,732,746 km (0.098 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 458 - 11,563 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit