🌌 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: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.65 AU - 0.69 AU

Year: 360 Days

Day: 24.7 Hours

Environment

Temp: -132 °C

Axial Tilt: 15.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,696,497 km

• M1: 407,505 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 619.3

Radius: 9.2

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.58 AU - 0.88 AU

Year: 409 Days

Day: 6.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 65,696,497 km

• M1: 114,442 km (0.046 R)
• M2: 464,501 km (0.061 R)
• M3: 898,634 km (0.098 R)
• M4: 1,601,146 km (0.107 R)
• M5: 2,324,901 km (0.11 R)
• M6: 2,652,221 km (0.083 R)
• M7: 3,308,507 km (0.095 R)
• M8: 3,626,552 km (0.083 R)
• M9: 4,003,837 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 864.8

Radius: 11.9

Gravity: 6.11 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.57 AU - 0.89 AU

Year: 409 Days

Day: 14 Hours

Environment

Temp: -134 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 65,696,497 km

• M1: 147,952 km (0.115 R)
• M2: 529,277 km (0.12 R)
• M3: 916,586 km (0.107 R)
• M4: 1,307,186 km (0.098 R)
• M5: 1,811,929 km (0.108 R)
• M6: 2,269,549 km (0.09 R)
• M7: 2,640,402 km (0.112 R)
• M8: 3,153,074 km (0.116 R)
• M9: 3,873,986 km (0.097 R)
• M10: 4,524,438 km (0.085 R)
• M11: 5,102,484 km (0.042 R)
• M12: 5,955,491 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.5

Radius: 13.8

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.31 AU - 1.79 AU

Year: 1266 Days

Day: 9.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 65,696,497 km

• M1: 201,957 km (0.073 R)
• M2: 660,774 km (0.069 R)
• M3: 1,220,120 km (0.061 R)
• M4: 1,661,135 km (0.105 R)
• M5: 2,265,211 km (0.114 R)
• M6: 3,108,045 km (0.111 R)
• M7: 3,625,953 km (0.077 R)
• M8: 4,763,795 km (0.116 R)
• M9: 5,557,710 km (0.027 R)
• M10: 5,997,678 km (0.072 R)
• M11: 6,643,641 km (0.11 R)
• M12: 7,409,882 km (0.119 R)
• M13: 9,205,505 km (0.054 R)
• M14: 10,691,461 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911.4

Radius: 11

Gravity: 7.53 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.73 AU - 1.79 AU

Year: 1532 Days

Day: 14.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,696,497 km

• M1: 139,874 km (0.03 R)
• M2: 556,953 km (0.084 R)
• M3: 1,197,980 km (0.118 R)
• M4: 2,693,510 km (0.112 R)
• M5: 3,448,680 km (0.094 R)
• M6: 4,002,491 km (0.086 R)
• M7: 4,777,408 km (0.117 R)
• M8: 5,179,078 km (0.112 R)
• M9: 6,123,789 km (0.087 R)
• M10: 6,471,454 km (0.1 R)
• M11: 7,343,759 km (0.076 R)
• M12: 8,443,304 km (0.076 R)
• M13: 9,128,312 km (0.113 R)
• M14: 9,749,293 km (0.084 R)
• M15: 10,328,686 km (0.082 R)
• M16: 12,089,004 km (0.055 R)
• M17: 12,959,364 km (0.089 R)
• M18: 13,913,350 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.5

Radius: 11.9

Gravity: 5.67 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.73 AU - 2.55 AU

Year: 2054 Days

Day: 9.1 Hours

Environment

Temp: -197 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,696,497 km

• M1: 148,102 km (0.067 R)
• M2: 595,699 km (0.058 R)
• M3: 975,378 km (0.053 R)
• M4: 1,823,598 km (0.04 R)
• M5: 2,488,860 km (0.098 R)
• M6: 2,894,270 km (0.036 R)
• M7: 3,344,111 km (0.063 R)
• M8: 3,859,027 km (0.079 R)
• M9: 4,784,589 km (0.089 R)
• M10: 5,370,115 km (0.113 R)
• M11: 5,902,384 km (0.061 R)
• M12: 6,603,699 km (0.073 R)
• M13: 7,594,486 km (0.043 R)
• M14: 8,048,515 km (0.094 R)
• M15: 8,424,604 km (0.068 R)
• M16: 9,799,558 km (0.059 R)
• M17: 10,265,406 km (0.113 R)
• M18: 11,164,190 km (0.079 R)
• M19: 12,904,761 km (0.089 R)
• M20: 14,541,811 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 103.1

Radius: 3.1

Gravity: 10.73 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 6.11 AU - 6.91 AU

Year: 10896 Days

Day: 24 Hours

Environment

Temp: -226 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 65,696,497 km

• M1: 41,289 km (0.069 R)
• M2: 1,529,638 km (0.092 R)
• M3: 1,951,654 km (0.08 R)
• M4: 2,288,399 km (0.066 R)
• M5: 3,807,565 km (0.12 R)
• M6: 5,803,949 km (0.096 R)
• M7: 6,371,074 km (0.084 R)
• M8: 8,403,960 km (0.094 R)
• M9: 10,612,922 km (0.07 R)
• M10: 14,633,215 km (0.064 R)
• M11: 17,246,690 km (0.105 R)
• M12: 20,021,880 km (0.116 R)
• M13: 26,198,028 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 538.5

Radius: 7.6

Gravity: 9.32 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 7.77 AU - 10.49 AU

Year: 18097 Days

Day: 24 Hours

Environment

Temp: -223 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,696,497 km

• M1: 110,852 km (0.104 R)
• M2: 1,371,513 km (0.099 R)
• M3: 1,901,389 km (0.109 R)
• M4: 4,293,010 km (0.075 R)
• M5: 4,582,931 km (0.07 R)
• M6: 10,482,024 km (0.079 R)
• M7: 14,549,889 km (0.119 R)
• M8: 15,653,772 km (0.117 R)
• M9: 18,954,798 km (0.115 R)
• M10: 19,299,771 km (0.105 R)
• M11: 23,277,877 km (0.055 R)
• M12: 27,002,565 km (0.051 R)
• M13: 27,881,154 km (0.099 R)
• M14: 31,106,484 km (0.067 R)
• M15: 35,087,433 km (0.115 R)
• M16: 39,116,103 km (0.109 R)
• M17: 39,535,127 km (0.108 R)
• M18: 42,700,468 km (0.104 R)
• M19: 45,721,148 km (0.106 R)
• M20: 48,077,913 km (0.075 R)
• M21: 55,281,051 km (0.093 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 479 - 13,064 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit