🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.59 AU - 0.67 AU

Year: 328 Days

Day: 18.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 34.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.9

Radius: 13.1

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.85 AU - 1.15 AU

Year: 656 Days

Day: 14.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 58,185,979 km

• M1: 162,912 km (0.114 R)
• M2: 584,628 km (0.074 R)
• M3: 1,015,620 km (0.117 R)
• M4: 1,556,267 km (0.09 R)
• M5: 2,228,859 km (0.072 R)
• M6: 4,041,686 km (0.115 R)
• M7: 4,627,212 km (0.115 R)
• M8: 6,544,907 km (0.048 R)
• M9: 7,399,559 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 702.8

Radius: 11.4

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.49 AU - 2.15 AU

Year: 1611 Days

Day: 10.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 167 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 58,185,979 km

• M1: 141,819 km (0.095 R)
• M2: 593,156 km (0.052 R)
• M3: 1,048,681 km (0.082 R)
• M4: 1,424,471 km (0.033 R)
• M5: 1,913,058 km (0.077 R)
• M6: 2,348,387 km (0.117 R)
• M7: 3,518,841 km (0.11 R)
• M8: 4,365,565 km (0.113 R)
• M9: 6,024,605 km (0.071 R)
• M10: 6,485,666 km (0.051 R)
• M11: 6,866,093 km (0.074 R)
• M12: 8,361,623 km (0.102 R)
• M13: 9,186,057 km (0.099 R)
• M14: 9,798,212 km (0.105 R)
• M15: 10,644,786 km (0.05 R)
• M16: 13,114,348 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.8

Radius: 11.5

Gravity: 7.14 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.47 AU - 2.19 AU

Year: 1624 Days

Day: 14.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,185,979 km

• M1: 143,016 km (0.07 R)
• M2: 514,916 km (0.111 R)
• M3: 986,000 km (0.119 R)
• M4: 1,350,869 km (0.117 R)
• M5: 2,097,961 km (0.081 R)
• M6: 2,512,047 km (0.115 R)
• M7: 3,041,474 km (0.074 R)
• M8: 3,490,717 km (0.117 R)
• M9: 6,674,907 km (0.032 R)
• M10: 7,186,831 km (0.088 R)
• M11: 8,786,182 km (0.1 R)
• M12: 9,976,832 km (0.066 R)
• M13: 10,864,994 km (0.038 R)
• M14: 12,314,747 km (0.115 R)
• M15: 13,462,761 km (0.1 R)
• M16: 14,680,937 km (0.09 R)
• M17: 15,042,066 km (0.052 R)
• M18: 15,876,523 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.7

Radius: 14.6

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 2.99 AU - 3.27 AU

Year: 3633 Days

Day: 7.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,185,979 km

• M1: 205,847 km (0.108 R)
• M2: 816,804 km (0.094 R)
• M3: 1,524,103 km (0.105 R)
• M4: 2,750,806 km (0.067 R)
• M5: 3,865,609 km (0.116 R)
• M6: 5,837,907 km (0.117 R)
• M7: 7,913,578 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.1

Radius: 10.5

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.64 AU - 5.92 AU

Year: 6856 Days

Day: 11.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 169.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 58,185,979 km

• M1: 130,599 km (0.079 R)
• M2: 500,704 km (0.104 R)
• M3: 970,292 km (0.104 R)
• M4: 1,330,224 km (0.112 R)
• M5: 1,780,663 km (0.043 R)
• M6: 2,172,311 km (0.081 R)
• M7: 2,711,312 km (0.118 R)
• M8: 3,072,291 km (0.087 R)
• M9: 4,506,935 km (0.081 R)
• M10: 5,213,785 km (0.108 R)
• M11: 6,848,142 km (0.109 R)
• M12: 8,597,539 km (0.114 R)
• M13: 9,340,592 km (0.086 R)
• M14: 10,081,101 km (0.096 R)
• M15: 10,673,359 km (0.107 R)
• M16: 11,877,622 km (0.065 R)
• M17: 14,842,502 km (0.099 R)
• M18: 15,489,663 km (0.1 R)
• M19: 17,286,333 km (0.105 R)
• M20: 19,425,732 km (0.095 R)
• M21: 20,631,342 km (0.087 R)
• M22: 21,289,572 km (0.077 R)
• M23: 23,902,748 km (0.063 R)
• M24: 24,628,746 km (0.099 R)
• M25: 27,329,736 km (0.071 R)
• M26: 33,412,684 km (0.055 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 13.6

Radius: 14.5

Gravity: 0.06 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.86 AU - 5.84 AU

Year: 7007 Days

Day: 13.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 58,185,979 km

• M1: 213,626 km (0.073 R)
• M2: 5,234,429 km (0.087 R)
• M3: 5,973,443 km (0.029 R)
• M4: 8,886,413 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 870.5

Radius: 6.7

Gravity: 19.39 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 6.42 AU - 7.36 AU

Year: 11864 Days

Day: 19.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 58,185,979 km

• M1: 83,775 km (0.103 R)
• M2: 433,535 km (0.03 R)
• M3: 1,035,516 km (0.116 R)
• M4: 1,865,037 km (0.078 R)
• M5: 2,469,262 km (0.111 R)
• M6: 2,908,631 km (0.075 R)
• M7: 3,171,924 km (0.044 R)
• M8: 3,746,379 km (0.101 R)
• M9: 4,236,163 km (0.075 R)
• M10: 5,342,738 km (0.085 R)
• M11: 8,112,393 km (0.077 R)
• M12: 8,782,592 km (0.062 R)
• M13: 9,540,754 km (0.111 R)
• M14: 12,260,742 km (0.104 R)
• M15: 16,939,864 km (0.104 R)
• M16: 19,170,518 km (0.102 R)
• M17: 20,442,699 km (0.118 R)
• M18: 27,868,737 km (0.115 R)
• M19: 30,506,297 km (0.08 R)
• M20: 34,153,343 km (0.107 R)
• M21: 46,517,757 km (0.11 R)
• M22: 49,428,632 km (0.081 R)
• M23: 53,936,315 km (0.084 R)
• M24: 57,838,127 km (0.118 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 416 - 20,329 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit