🌌 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: 1.06

Radius: 1.02

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 46.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.51 AU - 0.79 AU

Year: 338 Days

Day: 26.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 9.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842

Radius: 10.4

Gravity: 7.78 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.72 AU - 1.16 AU

Year: 588 Days

Day: 6.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 15,169,642 km

• M1: 129,402 km (0.102 R)
• M2: 600,037 km (0.067 R)
• M3: 1,089,970 km (0.052 R)
• M4: 1,779,317 km (0.091 R)
• M5: 2,113,070 km (0.095 R)
• M6: 2,749,459 km (0.111 R)
• M7: 3,562,524 km (0.092 R)
• M8: 5,039,055 km (0.094 R)
• M9: 5,642,383 km (0.034 R)
• M10: 6,313,329 km (0.041 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.2

Radius: 12.3

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.76 AU - 1.22 AU

Year: 636 Days

Day: 11 Hours

Environment

Temp: -153 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 15,169,642 km

• M1: 153,188 km (0.108 R)
• M2: 900,878 km (0.086 R)
• M3: 1,302,997 km (0.107 R)
• M4: 1,802,954 km (0.105 R)
• M5: 2,348,088 km (0.079 R)
• M6: 3,136,319 km (0.101 R)
• M7: 3,675,620 km (0.047 R)
• M8: 4,123,965 km (0.079 R)
• M9: 5,184,015 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.9

Radius: 11.2

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1 AU - 1.34 AU

Year: 817 Days

Day: 7.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 15,169,642 km

• M1: 140,472 km (0.104 R)
• M2: 492,177 km (0.049 R)
• M3: 855,101 km (0.109 R)
• M4: 1,871,021 km (0.096 R)
• M5: 2,253,991 km (0.089 R)
• M6: 2,606,294 km (0.088 R)
• M7: 3,575,988 km (0.111 R)
• M8: 4,287,774 km (0.066 R)
• M9: 4,724,450 km (0.053 R)
• M10: 5,274,073 km (0.03 R)
• M11: 5,669,759 km (0.078 R)
• M12: 6,140,993 km (0.117 R)

Asteroid Belt

Center: 1.82 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.2

Radius: 12.5

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.88 AU - 3.04 AU

Year: 2491 Days

Day: 6.8 Hours

Environment

Temp: -193 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 15,169,642 km

• M1: 155,432 km (0.111 R)
• M2: 661,073 km (0.087 R)
• M3: 1,367,175 km (0.086 R)
• M4: 1,792,631 km (0.058 R)
• M5: 2,261,022 km (0.104 R)
• M6: 2,652,520 km (0.108 R)
• M7: 3,639,716 km (0.025 R)
• M8: 4,344,921 km (0.077 R)
• M9: 5,057,904 km (0.065 R)
• M10: 5,736,031 km (0.1 R)
• M11: 6,717,393 km (0.1 R)
• M12: 7,698,905 km (0.066 R)
• M13: 8,139,770 km (0.107 R)
• M14: 9,849,823 km (0.119 R)
• M15: 10,304,152 km (0.082 R)
• M16: 11,680,003 km (0.118 R)
• M17: 12,487,233 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 981.1

Radius: 8.9

Gravity: 12.39 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 2.37 AU - 2.97 AU

Year: 2817 Days

Day: 14.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 15,169,642 km

• M1: 112,198 km (0.108 R)
• M2: 446,400 km (0.062 R)
• M3: 1,460,374 km (0.093 R)
• M4: 1,947,914 km (0.081 R)
• M5: 2,556,029 km (0.088 R)
• M6: 3,570,303 km (0.094 R)
• M7: 4,929,250 km (0.088 R)
• M8: 6,196,643 km (0.081 R)
• M9: 7,185,784 km (0.085 R)
• M10: 8,070,656 km (0.104 R)
• M11: 8,521,693 km (0.094 R)
• M12: 9,248,440 km (0.093 R)
• M13: 12,898,179 km (0.047 R)
• M14: 13,180,470 km (0.056 R)
• M15: 15,222,331 km (0.052 R)
• M16: 19,059,517 km (0.119 R)
• M17: 20,173,871 km (0.111 R)
• M18: 20,875,934 km (0.109 R)
• M19: 21,200,262 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.8

Radius: 8.1

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 2.55 AU - 3.39 AU

Year: 3305 Days

Day: 12 Hours

Environment

Temp: -206 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 15,169,642 km

• M1: 100,979 km (0.059 R)
• M2: 362,476 km (0.087 R)
• M3: 677,529 km (0.059 R)
• M4: 1,635,404 km (0.103 R)
• M5: 2,876,767 km (0.091 R)
• M6: 3,404,698 km (0.055 R)
• M7: 4,125,460 km (0.084 R)
• M8: 6,206,965 km (0.053 R)
• M9: 6,637,658 km (0.116 R)
• M10: 6,980,237 km (0.1 R)
• M11: 9,420,477 km (0.099 R)
• M12: 10,759,677 km (0.118 R)
• M13: 11,796,540 km (0.081 R)
• M14: 13,184,360 km (0.082 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 191 - 17,057 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit