🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.58 AU - 0.72 AU

Year: 344 Days

Day: 26 Hours

Environment

Temp: -143 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,109,112 km

• M1: 86,916 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.1

Radius: 9.2

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.7 AU - 0.72 AU

Year: 392 Days

Day: 5.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,109,112 km

• M1: 117,883 km (0.117 R)
• M2: 527,781 km (0.11 R)
• M3: 913,594 km (0.069 R)
• M4: 1,290,730 km (0.112 R)
• M5: 1,724,863 km (0.091 R)
• M6: 2,558,124 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.4

Radius: 10

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.73 AU - 2.47 AU

Year: 1996 Days

Day: 14.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 46,109,112 km

• M1: 128,953 km (0.059 R)
• M2: 480,060 km (0.108 R)
• M3: 1,018,911 km (0.078 R)
• M4: 1,467,406 km (0.092 R)
• M5: 1,966,614 km (0.114 R)
• M6: 2,510,252 km (0.114 R)
• M7: 2,955,605 km (0.099 R)
• M8: 3,535,895 km (0.103 R)
• M9: 4,171,836 km (0.048 R)
• M10: 4,717,868 km (0.108 R)
• M11: 5,072,116 km (0.107 R)
• M12: 6,517,830 km (0.042 R)
• M13: 7,226,624 km (0.109 R)
• M14: 8,612,649 km (0.054 R)
• M15: 9,111,857 km (0.117 R)
• M16: 10,168,167 km (0.091 R)
• M17: 10,514,486 km (0.115 R)
• M18: 12,483,344 km (0.068 R)
• M19: 13,368,664 km (0.088 R)
• M20: 14,123,834 km (0.057 R)
• M21: 14,862,698 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.1

Radius: 10.3

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.03 AU - 2.27 AU

Year: 2068 Days

Day: 9.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 46,109,112 km

• M1: 128,355 km (0.107 R)
• M2: 470,336 km (0.069 R)
• M3: 902,674 km (0.101 R)
• M4: 1,316,760 km (0.088 R)
• M5: 1,781,860 km (0.109 R)
• M6: 2,191,758 km (0.114 R)
• M7: 2,749,459 km (0.109 R)
• M8: 3,236,101 km (0.101 R)
• M9: 3,906,150 km (0.065 R)
• M10: 5,005,246 km (0.089 R)
• M11: 5,360,989 km (0.03 R)
• M12: 6,375,861 km (0.077 R)
• M13: 7,745,579 km (0.028 R)
• M14: 8,345,168 km (0.105 R)
• M15: 8,975,274 km (0.08 R)
• M16: 11,547,908 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.2

Radius: 12

Gravity: 6.37 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.92 AU - 2.92 AU

Year: 2470 Days

Day: 14.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,109,112 km

• M1: 149,299 km (0.096 R)
• M2: 560,094 km (0.11 R)
• M3: 1,080,845 km (0.11 R)
• M4: 1,541,157 km (0.093 R)
• M5: 3,052,395 km (0.069 R)
• M6: 4,013,262 km (0.077 R)
• M7: 4,766,787 km (0.05 R)
• M8: 5,336,455 km (0.113 R)
• M9: 6,555,678 km (0.084 R)
• M10: 7,601,517 km (0.113 R)
• M11: 8,859,635 km (0.072 R)
• M12: 9,722,814 km (0.091 R)
• M13: 10,919,897 km (0.103 R)
• M14: 11,912,179 km (0.049 R)
• M15: 14,267,448 km (0.093 R)
• M16: 14,951,260 km (0.101 R)
• M17: 19,522,373 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.9

Radius: 12.7

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.32 AU - 3.34 AU

Year: 3123 Days

Day: 14.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 46,109,112 km

• M1: 157,975 km (0.061 R)
• M2: 631,901 km (0.09 R)
• M3: 1,047,035 km (0.051 R)
• M4: 1,769,444 km (0.072 R)
• M5: 2,181,287 km (0.085 R)
• M6: 2,722,232 km (0.059 R)
• M7: 3,185,836 km (0.06 R)
• M8: 3,886,702 km (0.081 R)
• M9: 4,617,189 km (0.107 R)
• M10: 5,437,434 km (0.089 R)
• M11: 6,529,498 km (0.072 R)
• M12: 8,033,705 km (0.08 R)
• M13: 10,316,269 km (0.079 R)
• M14: 21,394,889 km (0.093 R)
• M15: 22,202,119 km (0.046 R)
• M16: 23,521,572 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 245.6

Radius: 10.6

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 4.91 AU - 6.77 AU

Year: 9258 Days

Day: 9.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 46,109,112 km

• M1: 131,945 km (0.067 R)
• M2: 1,885,681 km (0.094 R)
• M3: 2,587,445 km (0.108 R)
• M4: 3,186,435 km (0.051 R)
• M5: 3,540,982 km (0.118 R)
• M6: 4,793,415 km (0.079 R)
• M7: 5,148,411 km (0.104 R)
• M8: 5,520,909 km (0.087 R)
• M9: 6,748,061 km (0.05 R)
• M10: 8,897,483 km (0.039 R)
• M11: 13,028,030 km (0.042 R)
• M12: 16,257,549 km (0.097 R)
• M13: 22,842,398 km (0.107 R)
• M14: 27,318,366 km (0.113 R)
• M15: 28,722,791 km (0.094 R)
• M16: 29,898,780 km (0.09 R)
• M17: 31,201,030 km (0.119 R)
• M18: 32,153,968 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 76.2

Radius: 10.1

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 5.04 AU - 6.68 AU

Year: 9306 Days

Day: 11.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,109,112 km

• M1: 125,662 km (0.103 R)
• M2: 522,994 km (0.077 R)
• M3: 1,062,294 km (0.096 R)
• M4: 1,391,859 km (0.085 R)
• M5: 1,767,499 km (0.041 R)
• M6: 2,308,146 km (0.107 R)
• M7: 2,873,027 km (0.116 R)
• M8: 4,066,070 km (0.088 R)
• M9: 5,282,301 km (0.069 R)
• M10: 6,874,621 km (0.086 R)
• M11: 7,683,795 km (0.096 R)
• M12: 8,044,625 km (0.078 R)
• M13: 8,835,998 km (0.119 R)
• M14: 11,227,919 km (0.079 R)
• M15: 13,167,455 km (0.11 R)
• M16: 17,360,833 km (0.106 R)
• M17: 20,814,449 km (0.074 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 267.6

Radius: 7.5

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 7.33 AU - 8.85 AU

Year: 15095 Days

Day: 20.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,109,112 km

• M1: 93,199 km (0.085 R)
• M2: 339,886 km (0.111 R)
• M3: 705,803 km (0.118 R)
• M4: 3,429,980 km (0.087 R)
• M5: 5,742,314 km (0.079 R)
• M6: 18,364,635 km (0.063 R)
• M7: 18,739,976 km (0.115 R)
• M8: 21,846,226 km (0.088 R)
• M9: 22,438,035 km (0.06 R)
• M10: 32,097,570 km (0.043 R)
• M11: 35,344,143 km (0.071 R)
• M12: 38,926,413 km (0.114 R)
• M13: 44,337,667 km (0.086 R)
• M14: 44,742,330 km (0.119 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 169 - 13,285 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit