🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.42 AU - 0.6 AU

Year: 235 Days

Day: 39.3 Hours

Environment

Temp: -112 °C

Axial Tilt: 15.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,765,565 km

• M1: 66,421 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.8

Radius: 12.4

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.73 AU - 0.93 AU

Year: 488 Days

Day: 7.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,765,565 km

• M1: 155,133 km (0.064 R)
• M2: 588,967 km (0.08 R)
• M3: 1,118,394 km (0.101 R)
• M4: 1,727,407 km (0.082 R)
• M5: 2,119,054 km (0.095 R)
• M6: 2,550,494 km (0.058 R)
• M7: 2,971,762 km (0.11 R)
• M8: 3,377,172 km (0.064 R)
• M9: 4,112,146 km (0.073 R)
• M10: 4,727,293 km (0.052 R)
• M11: 5,437,733 km (0.027 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.9

Radius: 8.6

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.85 AU - 1.05 AU

Year: 598 Days

Day: 13.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 41,765,565 km

• M1: 109,206 km (0.118 R)
• M2: 386,411 km (0.09 R)
• M3: 666,159 km (0.075 R)
• M4: 1,040,902 km (0.11 R)
• M5: 1,617,901 km (0.08 R)
• M6: 2,163,784 km (0.112 R)
• M7: 2,506,363 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 172.2

Radius: 12.6

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.79 AU - 1.81 AU

Year: 1559 Days

Day: 6.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,765,565 km

• M1: 156,629 km (0.03 R)
• M2: 585,676 km (0.108 R)
• M3: 1,033,272 km (0.096 R)
• M4: 1,700,928 km (0.081 R)
• M5: 2,227,961 km (0.071 R)
• M6: 2,710,863 km (0.086 R)
• M7: 3,588,255 km (0.081 R)
• M8: 5,258,216 km (0.096 R)
• M9: 6,707,221 km (0.106 R)
• M10: 8,012,312 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.7

Radius: 10.4

Gravity: 8.49 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.75 AU - 2.01 AU

Year: 1664 Days

Day: 11.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,765,565 km

• M1: 133,890 km (0.082 R)
• M2: 508,334 km (0.062 R)
• M3: 833,111 km (0.102 R)
• M4: 1,159,982 km (0.034 R)
• M5: 2,283,761 km (0.112 R)
• M6: 2,885,743 km (0.1 R)
• M7: 3,256,895 km (0.104 R)
• M8: 6,150,118 km (0.094 R)
• M9: 7,803,773 km (0.094 R)
• M10: 8,161,162 km (0.102 R)
• M11: 10,468,709 km (0.117 R)
• M12: 13,990,842 km (0.071 R)
• M13: 15,015,587 km (0.079 R)
• M14: 15,994,256 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.8

Radius: 12.8

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 1.71 AU - 2.71 AU

Year: 2121 Days

Day: 5.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,765,565 km

• M1: 160,070 km (0.095 R)
• M2: 630,405 km (0.059 R)
• M3: 1,095,356 km (0.104 R)
• M4: 1,523,804 km (0.073 R)
• M5: 2,230,504 km (0.104 R)
• M6: 2,863,902 km (0.094 R)
• M7: 3,431,925 km (0.07 R)
• M8: 4,129,799 km (0.04 R)
• M9: 5,464,361 km (0.107 R)
• M10: 6,243,617 km (0.119 R)
• M11: 7,231,262 km (0.098 R)
• M12: 7,907,145 km (0.096 R)
• M13: 8,779,450 km (0.089 R)
• M14: 9,984,461 km (0.111 R)
• M15: 11,937,012 km (0.108 R)
• M16: 13,414,291 km (0.114 R)
• M17: 14,305,296 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 562.9

Radius: 12.3

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.25 AU - 6.31 AU

Year: 8972 Days

Day: 7.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 41,765,565 km

• M1: 153,338 km (0.099 R)
• M2: 543,938 km (0.054 R)
• M3: 990,338 km (0.042 R)
• M4: 3,000,036 km (0.084 R)
• M5: 3,507,771 km (0.078 R)
• M6: 5,323,440 km (0.079 R)
• M7: 5,803,799 km (0.098 R)
• M8: 6,313,180 km (0.119 R)
• M9: 6,815,230 km (0.032 R)
• M10: 10,263,611 km (0.107 R)
• M11: 11,423,293 km (0.09 R)
• M12: 12,007,922 km (0.113 R)
• M13: 13,179,722 km (0.117 R)
• M14: 21,860,587 km (0.108 R)
• M15: 23,434,207 km (0.104 R)
• M16: 25,528,278 km (0.093 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: 359 - 12,712 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit