🌌 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: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.46 AU - 0.66 AU

Year: 271 Days

Day: 29.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 20.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.55 AU - 0.75 AU

Year: 338 Days

Day: 42.3 Hours

Environment

Temp: -130 °C

Axial Tilt: 42 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,724,959 km

• M1: 34,707 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 804.1

Radius: 14.8

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.68 AU - 0.72 AU

Year: 378 Days

Day: 12.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,724,959 km

• M1: 184,155 km (0.118 R)
• M2: 864,825 km (0.097 R)
• M3: 1,333,515 km (0.07 R)
• M4: 1,841,999 km (0.086 R)
• M5: 2,372,921 km (0.094 R)
• M6: 3,545,619 km (0.081 R)
• M7: 4,136,082 km (0.06 R)
• M8: 4,632,448 km (0.104 R)
• M9: 5,199,723 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362.8

Radius: 14.7

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.02 AU - 1.36 AU

Year: 838 Days

Day: 7.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,724,959 km

• M1: 183,108 km (0.07 R)
• M2: 689,497 km (0.085 R)
• M3: 1,448,257 km (0.085 R)
• M4: 1,926,222 km (0.097 R)
• M5: 2,391,172 km (0.099 R)
• M6: 2,853,280 km (0.095 R)
• M7: 3,700,752 km (0.045 R)
• M8: 4,250,823 km (0.115 R)
• M9: 5,036,212 km (0.103 R)
• M10: 5,570,576 km (0.108 R)
• M11: 6,123,789 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.4

Radius: 12.8

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.05 AU - 1.67 AU

Year: 1024 Days

Day: 10.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 76.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 72,724,959 km

• M1: 159,322 km (0.08 R)
• M2: 582,534 km (0.102 R)
• M3: 1,045,988 km (0.105 R)
• M4: 1,479,523 km (0.109 R)
• M5: 2,135,958 km (0.098 R)
• M6: 2,680,495 km (0.113 R)
• M7: 3,575,090 km (0.116 R)
• M8: 4,100,627 km (0.061 R)
• M9: 4,589,214 km (0.061 R)
• M10: 5,288,434 km (0.064 R)
• M11: 5,848,230 km (0.077 R)
• M12: 6,447,369 km (0.1 R)
• M13: 7,869,895 km (0.034 R)
• M14: 9,151,051 km (0.076 R)
• M15: 10,169,813 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.3

Radius: 12.2

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 1.73 AU - 1.73 AU

Year: 1469 Days

Day: 9.7 Hours

Environment

Temp: -177 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,724,959 km

• M1: 153,338 km (0.093 R)
• M2: 540,048 km (0.114 R)
• M3: 1,008,589 km (0.119 R)
• M4: 1,407,417 km (0.092 R)
• M5: 1,963,023 km (0.063 R)
• M6: 3,036,986 km (0.112 R)
• M7: 3,491,764 km (0.103 R)
• M8: 4,311,411 km (0.11 R)
• M9: 5,334,660 km (0.112 R)
• M10: 6,088,035 km (0.052 R)
• M11: 7,499,790 km (0.113 R)
• M12: 7,884,705 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305.1

Radius: 13

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.61 AU - 2.03 AU

Year: 1585 Days

Day: 10.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 121.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,724,959 km

• M1: 161,715 km (0.074 R)
• M2: 679,474 km (0.108 R)
• M3: 1,092,364 km (0.09 R)
• M4: 1,833,920 km (0.093 R)
• M5: 2,275,982 km (0.101 R)
• M6: 2,789,851 km (0.096 R)
• M7: 3,453,168 km (0.108 R)
• M8: 3,941,605 km (0.095 R)
• M9: 4,816,004 km (0.091 R)
• M10: 5,920,934 km (0.094 R)
• M11: 6,601,754 km (0.076 R)
• M12: 7,783,876 km (0.098 R)
• M13: 8,358,482 km (0.12 R)
• M14: 10,162,483 km (0.03 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.1

Radius: 13.5

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 4.54 AU - 5.36 AU

Year: 7111 Days

Day: 12.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,724,959 km

• M1: 170,093 km (0.093 R)
• M2: 1,339,051 km (0.097 R)
• M3: 2,106,338 km (0.099 R)
• M4: 2,779,080 km (0.074 R)
• M5: 3,541,131 km (0.097 R)
• M6: 4,018,049 km (0.1 R)
• M7: 4,438,419 km (0.078 R)
• M8: 5,714,339 km (0.117 R)
• M9: 10,754,441 km (0.085 R)
• M10: 11,269,656 km (0.108 R)
• M11: 13,497,169 km (0.106 R)
• M12: 15,535,440 km (0.075 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.5

Radius: 14.1

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.62 AU - 5.98 AU

Year: 7878 Days

Day: 9.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,724,959 km

• M1: 175,478 km (0.085 R)
• M2: 869,014 km (0.087 R)
• M3: 1,399,189 km (0.117 R)
• M4: 2,038,869 km (0.082 R)
• M5: 2,588,193 km (0.094 R)
• M6: 3,214,709 km (0.03 R)
• M7: 4,089,407 km (0.095 R)
• M8: 5,354,856 km (0.063 R)
• M9: 6,211,154 km (0.07 R)
• M10: 7,569,203 km (0.109 R)
• M11: 8,606,814 km (0.077 R)
• M12: 10,291,586 km (0.092 R)
• M13: 10,818,020 km (0.092 R)
• M14: 12,452,676 km (0.116 R)
• M15: 15,390,330 km (0.096 R)
• M16: 17,724,057 km (0.11 R)
• M17: 18,342,494 km (0.034 R)
• M18: 19,841,914 km (0.061 R)
• M19: 20,810,111 km (0.098 R)
• M20: 24,744,834 km (0.056 R)
• M21: 32,294,590 km (0.118 R)
• M22: 34,370,560 km (0.061 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 652.7

Radius: 6.9

Gravity: 13.71 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 9.04 AU - 10.12 AU

Year: 19145 Days

Day: 24.5 Hours

Environment

Temp: -236 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 72,724,959 km

• M1: 160,668 km (0.048 R)
• M2: 530,923 km (0.096 R)
• M3: 1,452,895 km (0.116 R)
• M4: 4,296,002 km (0.029 R)
• M5: 4,840,090 km (0.079 R)
• M6: 5,982,868 km (0.099 R)
• M7: 9,496,473 km (0.104 R)
• M8: 14,928,671 km (0.086 R)
• M9: 16,091,794 km (0.068 R)
• M10: 18,597,110 km (0.083 R)
• M11: 24,365,903 km (0.107 R)
• M12: 27,311,335 km (0.03 R)
• M13: 28,928,339 km (0.06 R)
• M14: 32,733,809 km (0.112 R)
• M15: 40,873,878 km (0.036 R)
• M16: 43,139,388 km (0.027 R)
• M17: 47,425,816 km (0.045 R)
• M18: 48,249,502 km (0.113 R)
• M19: 52,687,472 km (0.079 R)
• M20: 61,972,264 km (0.052 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 379 - 19,894 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit