🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.82

Radius: 0.92

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.58 AU - 0.64 AU

Year: 313 Days

Day: 23.9 Hours

Environment

Temp: -135 °C

Axial Tilt: 158.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.3

Radius: 9.7

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.7 AU - 0.74 AU

Year: 401 Days

Day: 12 Hours

Environment

Temp: -141 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 45,961,051 km

• M1: 120,875 km (0.12 R)
• M2: 504,145 km (0.105 R)
• M3: 859,889 km (0.095 R)
• M4: 1,495,680 km (0.101 R)
• M5: 2,014,934 km (0.099 R)
• M6: 2,337,616 km (0.111 R)
• M7: 2,813,188 km (0.105 R)
• M8: 3,415,020 km (0.098 R)
• M9: 3,718,853 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.3

Radius: 10.5

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.98 AU - 1.04 AU

Year: 666 Days

Day: 11.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,961,051 km

• M1: 130,599 km (0.107 R)
• M2: 558,898 km (0.1 R)
• M3: 1,045,689 km (0.103 R)
• M4: 1,374,356 km (0.095 R)
• M5: 1,740,870 km (0.089 R)
• M6: 3,082,913 km (0.079 R)
• M7: 3,734,860 km (0.061 R)
• M8: 4,153,585 km (0.12 R)
• M9: 5,694,443 km (0.089 R)
• M10: 6,074,571 km (0.09 R)
• M11: 6,553,135 km (0.026 R)
• M12: 7,186,532 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.7

Radius: 11.5

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.85 AU - 1.31 AU

Year: 736 Days

Day: 10.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,961,051 km

• M1: 143,913 km (0.107 R)
• M2: 536,757 km (0.113 R)
• M3: 972,835 km (0.097 R)
• M4: 1,394,103 km (0.094 R)
• M5: 2,281,816 km (0.11 R)
• M6: 2,713,556 km (0.07 R)
• M7: 3,266,320 km (0.095 R)
• M8: 3,714,515 km (0.064 R)
• M9: 4,124,413 km (0.085 R)
• M10: 5,995,583 km (0.116 R)
• M11: 7,187,430 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.1

Radius: 10.2

Gravity: 8.03 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.03 AU - 1.17 AU

Year: 757 Days

Day: 12 Hours

Environment

Temp: -164 °C

Axial Tilt: 149.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,961,051 km

• M1: 126,859 km (0.053 R)
• M2: 524,341 km (0.12 R)
• M3: 896,540 km (0.082 R)
• M4: 1,242,710 km (0.104 R)
• M5: 1,581,399 km (0.084 R)
• M6: 2,078,363 km (0.096 R)
• M7: 2,396,857 km (0.053 R)
• M8: 3,030,853 km (0.079 R)
• M9: 4,910,700 km (0.067 R)
• M10: 5,424,718 km (0.063 R)
• M11: 6,410,718 km (0.081 R)
• M12: 6,735,345 km (0.055 R)
• M13: 7,417,661 km (0.067 R)
• M14: 8,424,006 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.5

Radius: 14.6

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.34 AU - 1.38 AU

Year: 1040 Days

Day: 7.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,961,051 km

• M1: 181,612 km (0.118 R)
• M2: 1,012,329 km (0.095 R)
• M3: 2,373,071 km (0.111 R)
• M4: 3,216,953 km (0.071 R)
• M5: 4,253,666 km (0.111 R)
• M6: 5,522,256 km (0.108 R)
• M7: 6,038,069 km (0.099 R)
• M8: 6,542,812 km (0.083 R)
• M9: 7,400,008 km (0.105 R)
• M10: 8,510,623 km (0.091 R)
• M11: 9,146,863 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.3

Radius: 9.6

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.52 AU - 1.7 AU

Year: 1340 Days

Day: 6 Hours

Environment

Temp: -183 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 45,961,051 km

• M1: 122,969 km (0.049 R)
• M2: 443,707 km (0.116 R)
• M3: 775,815 km (0.104 R)
• M4: 1,090,868 km (0.09 R)
• M5: 1,526,048 km (0.109 R)
• M6: 1,850,226 km (0.108 R)
• M7: 2,178,295 km (0.105 R)
• M8: 2,487,214 km (0.061 R)
• M9: 3,222,189 km (0.102 R)
• M10: 3,566,114 km (0.084 R)
• M11: 3,966,438 km (0.049 R)
• M12: 4,784,738 km (0.092 R)
• M13: 5,195,534 km (0.068 R)
• M14: 6,088,334 km (0.092 R)
• M15: 6,616,564 km (0.101 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 954.9

Radius: 13.3

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.97 AU - 4.13 AU

Year: 4388 Days

Day: 13.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 45,961,051 km

• M1: 170,242 km (0.069 R)
• M2: 804,986 km (0.099 R)
• M3: 1,221,167 km (0.105 R)
• M4: 1,723,218 km (0.082 R)
• M5: 2,284,958 km (0.111 R)
• M6: 3,062,268 km (0.099 R)
• M7: 3,482,190 km (0.068 R)
• M8: 4,439,915 km (0.089 R)
• M9: 5,226,351 km (0.107 R)
• M10: 5,741,716 km (0.092 R)
• M11: 6,941,940 km (0.079 R)
• M12: 8,077,088 km (0.049 R)
• M13: 8,572,108 km (0.079 R)
• M14: 10,093,518 km (0.119 R)
• M15: 10,534,084 km (0.026 R)
• M16: 11,218,943 km (0.101 R)
• M17: 14,480,625 km (0.114 R)
• M18: 17,308,623 km (0.051 R)
• M19: 20,346,956 km (0.095 R)
• M20: 22,435,492 km (0.088 R)
• M21: 24,034,693 km (0.105 R)
• M22: 25,872,204 km (0.04 R)
• M23: 28,845,312 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 285.7

Radius: 5.8

Gravity: 8.49 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 6.64 AU - 9.14 AU

Year: 14539 Days

Day: 20.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 45,961,051 km

• M1: 74,649 km (0.089 R)
• M2: 267,182 km (0.12 R)
• M3: 473,328 km (0.075 R)
• M4: 897,438 km (0.115 R)
• M5: 1,691,503 km (0.087 R)
• M6: 2,340,459 km (0.076 R)
• M7: 2,731,807 km (0.118 R)
• M8: 3,570,004 km (0.056 R)
• M9: 3,954,470 km (0.065 R)
• M10: 4,394,737 km (0.082 R)
• M11: 4,626,763 km (0.086 R)
• M12: 5,437,883 km (0.096 R)
• M13: 5,808,287 km (0.09 R)
• M14: 6,052,580 km (0.079 R)
• M15: 7,500,538 km (0.091 R)
• M16: 8,570,462 km (0.097 R)
• M17: 10,385,982 km (0.06 R)
• M18: 12,732,574 km (0.073 R)
• M19: 13,325,131 km (0.109 R)
• M20: 13,506,294 km (0.1 R)
• M21: 13,997,723 km (0.076 R)
• M22: 14,437,541 km (0.093 R)
• M23: 15,410,675 km (0.072 R)
• M24: 15,879,515 km (0.065 R)
• M25: 19,354,225 km (0.086 R)
• M26: 21,021,942 km (0.103 R)
• M27: 22,611,419 km (0.08 R)
• M28: 25,097,137 km (0.091 R)
• M29: 27,270,645 km (0.11 R)
• M30: 42,083,377 km (0.108 R)
• M31: 42,604,726 km (0.085 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 327 - 12,953 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit