🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.72

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.45 AU - 0.61 AU

Year: 245 Days

Day: 27.2 Hours

Environment

Temp: -111 °C

Axial Tilt: 23.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,545,395 km

• M1: 506,688 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.27

Radius: 1.1

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.45 AU - 0.63 AU

Year: 252 Days

Day: 43.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,545,395 km

• M1: 208,839 km (0.104 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.56 AU - 0.7 AU

Year: 318 Days

Day: 43.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 1.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 764.3

Radius: 11.4

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.71 AU - 1.17 AU

Year: 579 Days

Day: 11 Hours

Environment

Temp: -154 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 29,545,395 km

• M1: 143,016 km (0.079 R)
• M2: 667,506 km (0.045 R)
• M3: 1,022,202 km (0.056 R)
• M4: 1,431,203 km (0.068 R)
• M5: 1,959,134 km (0.106 R)
• M6: 2,448,169 km (0.051 R)
• M7: 3,161,452 km (0.113 R)
• M8: 3,838,981 km (0.11 R)
• M9: 4,470,134 km (0.102 R)
• M10: 5,050,873 km (0.04 R)
• M11: 6,889,730 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.9

Radius: 11

Gravity: 7.56 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.01 AU - 1.27 AU

Year: 774 Days

Day: 5.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 29,545,395 km

• M1: 136,732 km (0.089 R)
• M2: 559,496 km (0.095 R)
• M3: 909,256 km (0.027 R)
• M4: 1,488,648 km (0.074 R)
• M5: 2,048,144 km (0.102 R)
• M6: 2,410,770 km (0.052 R)
• M7: 2,865,846 km (0.082 R)
• M8: 3,214,110 km (0.082 R)
• M9: 3,649,141 km (0.106 R)
• M10: 4,012,813 km (0.096 R)
• M11: 4,518,454 km (0.106 R)
• M12: 4,884,819 km (0.059 R)
• M13: 5,539,908 km (0.091 R)
• M14: 7,519,088 km (0.098 R)
• M15: 8,264,235 km (0.064 R)
• M16: 8,787,828 km (0.051 R)
• M17: 9,167,507 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130.3

Radius: 9.1

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.13 AU - 1.85 AU

Year: 1156 Days

Day: 7 Hours

Environment

Temp: -184 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,545,395 km

• M1: 113,096 km (0.058 R)
• M2: 408,253 km (0.025 R)
• M3: 726,896 km (0.074 R)
• M4: 1,148,313 km (0.094 R)
• M5: 1,530,087 km (0.108 R)
• M6: 1,846,636 km (0.065 R)
• M7: 2,543,313 km (0.081 R)
• M8: 3,271,406 km (0.089 R)
• M9: 3,856,633 km (0.103 R)
• M10: 4,942,714 km (0.103 R)
• M11: 5,556,813 km (0.119 R)
• M12: 6,504,815 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.8

Radius: 9.6

Gravity: 8.01 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1.91 AU - 1.99 AU

Year: 1731 Days

Day: 8.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,545,395 km

• M1: 119,379 km (0.102 R)
• M2: 434,283 km (0.104 R)
• M3: 746,643 km (0.109 R)
• M4: 1,241,363 km (0.092 R)
• M5: 1,742,366 km (0.031 R)
• M6: 2,310,689 km (0.086 R)
• M7: 3,089,346 km (0.098 R)
• M8: 4,336,094 km (0.106 R)
• M9: 4,776,810 km (0.076 R)
• M10: 5,094,256 km (0.085 R)
• M11: 5,938,138 km (0.109 R)
• M12: 6,330,832 km (0.093 R)
• M13: 6,636,760 km (0.084 R)
• M14: 7,728,376 km (0.055 R)
• M15: 8,904,065 km (0.102 R)
• M16: 9,551,375 km (0.118 R)
• M17: 10,194,945 km (0.067 R)
• M18: 11,159,104 km (0.052 R)
• M19: 12,221,847 km (0.041 R)
• M20: 13,185,257 km (0.044 R)
• M21: 13,643,475 km (0.105 R)
• M22: 14,069,231 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520.3

Radius: 9.8

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.31 AU - 2.37 AU

Year: 2276 Days

Day: 5.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,545,395 km

• M1: 121,922 km (0.038 R)
• M2: 585,526 km (0.113 R)
• M3: 948,151 km (0.114 R)
• M4: 1,261,708 km (0.076 R)
• M5: 1,567,038 km (0.118 R)
• M6: 2,357,812 km (0.11 R)
• M7: 2,828,597 km (0.115 R)
• M8: 3,959,556 km (0.083 R)
• M9: 4,463,701 km (0.06 R)
• M10: 5,322,692 km (0.071 R)
• M11: 5,791,682 km (0.079 R)
• M12: 6,313,629 km (0.117 R)
• M13: 6,678,797 km (0.059 R)
• M14: 7,168,880 km (0.079 R)
• M15: 7,537,788 km (0.115 R)
• M16: 7,889,493 km (0.085 R)
• M17: 8,881,177 km (0.097 R)
• M18: 9,207,599 km (0.099 R)
• M19: 9,643,976 km (0.09 R)
• M20: 12,275,104 km (0.115 R)
• M21: 13,863,833 km (0.106 R)
• M22: 14,889,626 km (0.076 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135.5

Radius: 13.5

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.54 AU - 5.1 AU

Year: 5709 Days

Day: 13.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,545,395 km

• M1: 167,998 km (0.098 R)
• M2: 746,493 km (0.094 R)
• M3: 1,188,705 km (0.092 R)
• M4: 1,768,845 km (0.113 R)
• M5: 2,248,755 km (0.063 R)
• M6: 2,846,847 km (0.1 R)
• M7: 3,808,762 km (0.084 R)
• M8: 4,492,424 km (0.101 R)
• M9: 5,796,020 km (0.117 R)
• M10: 7,640,562 km (0.066 R)
• M11: 9,668,810 km (0.106 R)
• M12: 10,106,683 km (0.115 R)
• M13: 12,413,482 km (0.091 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 51.8

Radius: 6.9

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 8.99 AU - 9.31 AU

Year: 17598 Days

Day: 18.6 Hours

Environment

Temp: -239 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,545,395 km

• M1: 86,019 km (0.051 R)
• M2: 358,586 km (0.079 R)
• M3: 980,464 km (0.109 R)
• M4: 2,681,841 km (0.042 R)
• M5: 3,009,760 km (0.056 R)
• M6: 3,303,271 km (0.11 R)
• M7: 5,343,038 km (0.083 R)
• M8: 6,739,683 km (0.074 R)
• M9: 7,382,206 km (0.095 R)
• M10: 12,169,338 km (0.109 R)
• M11: 13,482,807 km (0.084 R)
• M12: 13,798,758 km (0.118 R)
• M13: 14,445,619 km (0.066 R)
• M14: 16,328,907 km (0.096 R)
• M15: 26,231,239 km (0.089 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 217 - 13,279 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit