🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.52 AU - 0.64 AU

Year: 159 Days

Day: 18.1 Hours

Environment

Temp: 191 °C

Axial Tilt: 29.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.67 AU - 0.81 AU

Year: 229 Days

Day: 35.4 Hours

Environment

Temp: 147 °C

Axial Tilt: 13.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 27,404,990 km

• M1: 58,493 km (0.071 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.79 AU - 1.21 AU

Year: 360 Days

Day: 44.6 Hours

Environment

Temp: 40 °C

Axial Tilt: 10.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.1 AU - 1.18 AU

Year: 438 Days

Day: 23.3 Hours

Environment

Temp: 15 °C

Axial Tilt: 41.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.16 AU - 1.3 AU

Year: 491 Days

Day: 35.4 Hours

Environment

Temp: 5 °C

Axial Tilt: 178.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 27,404,990 km

• M1: 41,139 km (0.057 R)

Asteroid Belt

Center: 3.17 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.4

Radius: 12.4

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 3.96 AU - 6.24 AU

Year: 4145 Days

Day: 14.1 Hours

Environment

Temp: -144 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,404,990 km

• M1: 154,235 km (0.053 R)
• M2: 565,330 km (0.109 R)
• M3: 999,613 km (0.061 R)
• M4: 1,403,826 km (0.026 R)
• M5: 2,128,927 km (0.096 R)
• M6: 2,594,925 km (0.066 R)
• M7: 3,263,926 km (0.075 R)
• M8: 5,349,470 km (0.056 R)
• M9: 6,038,817 km (0.102 R)
• M10: 7,630,090 km (0.1 R)
• M11: 8,317,043 km (0.078 R)
• M12: 8,771,821 km (0.108 R)
• M13: 10,583,601 km (0.114 R)
• M14: 11,073,085 km (0.108 R)
• M15: 12,931,539 km (0.068 R)
• M16: 16,596,687 km (0.026 R)
• M17: 17,874,851 km (0.106 R)
• M18: 19,021,968 km (0.062 R)
• M19: 21,111,551 km (0.049 R)
• M20: 25,822,238 km (0.083 R)
• M21: 26,547,937 km (0.119 R)
• M22: 27,536,630 km (0.059 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 451.2

Radius: 14.9

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 4.54 AU - 7.42 AU

Year: 5263 Days

Day: 6.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,404,990 km

• M1: 186,848 km (0.106 R)
• M2: 921,672 km (0.086 R)
• M3: 1,413,849 km (0.094 R)
• M4: 3,284,720 km (0.088 R)
• M5: 4,484,346 km (0.118 R)
• M6: 5,185,661 km (0.11 R)
• M7: 6,374,365 km (0.091 R)
• M8: 7,066,106 km (0.082 R)
• M9: 8,054,200 km (0.09 R)
• M10: 9,566,036 km (0.117 R)
• M11: 10,906,283 km (0.054 R)
• M12: 11,991,167 km (0.066 R)
• M13: 13,146,810 km (0.102 R)
• M14: 13,957,781 km (0.027 R)
• M15: 14,481,373 km (0.096 R)
• M16: 17,721,065 km (0.108 R)
• M17: 21,416,581 km (0.083 R)
• M18: 24,448,780 km (0.082 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 449.8

Radius: 10.2

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 7.33 AU - 7.67 AU

Year: 7392 Days

Day: 13.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,404,990 km

• M1: 126,859 km (0.071 R)
• M2: 445,652 km (0.075 R)
• M3: 1,368,671 km (0.1 R)
• M4: 2,108,881 km (0.115 R)
• M5: 3,323,317 km (0.076 R)
• M6: 5,037,110 km (0.101 R)
• M7: 5,741,865 km (0.088 R)
• M8: 6,214,744 km (0.063 R)
• M9: 7,096,175 km (0.085 R)
• M10: 7,678,560 km (0.085 R)
• M11: 9,445,909 km (0.088 R)
• M12: 10,986,168 km (0.073 R)
• M13: 12,792,563 km (0.105 R)
• M14: 13,327,674 km (0.101 R)
• M15: 13,655,892 km (0.085 R)
• M16: 14,905,633 km (0.035 R)
• M17: 25,952,089 km (0.102 R)
• M18: 28,945,991 km (0.119 R)

Planet 9 - Gas Giant

Semi-Major Axis: 11.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.2

Radius: 14.3

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 10.37 AU - 12.75 AU

Year: 14145 Days

Day: 7.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 27,404,990 km

• M1: 177,872 km (0.107 R)
• M2: 658,530 km (0.093 R)
• M3: 1,139,337 km (0.071 R)
• M4: 1,673,701 km (0.106 R)
• M5: 2,497,836 km (0.082 R)
• M6: 3,221,141 km (0.044 R)
• M7: 3,714,366 km (0.065 R)
• M8: 4,503,195 km (0.098 R)
• M9: 5,089,320 km (0.054 R)
• M10: 5,987,804 km (0.085 R)
• M11: 8,336,641 km (0.111 R)
• M12: 8,921,568 km (0.111 R)
• M13: 12,706,394 km (0.113 R)
• M14: 14,705,770 km (0.117 R)
• M15: 22,603,041 km (0.096 R)
• M16: 24,131,483 km (0.075 R)
• M17: 25,829,868 km (0.068 R)
• M18: 28,579,925 km (0.054 R)
• M19: 29,687,847 km (0.066 R)
• M20: 30,252,429 km (0.118 R)
• M21: 34,283,643 km (0.089 R)
• M22: 36,170,970 km (0.09 R)
• M23: 39,333,469 km (0.064 R)
• M24: 47,267,990 km (0.063 R)
• M25: 51,527,341 km (0.065 R)
• M26: 58,297,991 km (0.108 R)

Planet 10 - Ice Giant

Semi-Major Axis: 14.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 29.7

Radius: 5.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 11.29 AU - 18.57 AU

Year: 20762 Days

Day: 17.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,404,990 km

• M1: 64,925 km (0.074 R)
• M2: 690,993 km (0.113 R)
• M3: 863,479 km (0.071 R)
• M4: 1,139,188 km (0.081 R)
• M5: 1,494,932 km (0.065 R)
• M6: 2,939,598 km (0.114 R)
• M7: 3,183,742 km (0.111 R)
• M8: 4,251,272 km (0.107 R)
• M9: 5,371,611 km (0.115 R)
• M10: 6,675,655 km (0.031 R)
• M11: 7,265,370 km (0.036 R)
• M12: 8,623,420 km (0.083 R)
• M13: 11,924,895 km (0.05 R)
• M14: 12,352,895 km (0.083 R)
• M15: 15,584,807 km (0.091 R)
• M16: 16,560,484 km (0.117 R)
• M17: 17,698,475 km (0.108 R)
• M18: 25,094,744 km (0.057 R)

Kuiper Belt

Range: 30.5 - 47.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 308 - 14,759 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit