🌌 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: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.51 AU - 0.75 AU

Year: 328 Days

Day: 41.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 3.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.63 AU - 0.71 AU

Year: 360 Days

Day: 35.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 44,133,750 km

• M1: 657,183 km (0.033 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 97.4

Radius: 9.6

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.87 AU - 1.07 AU

Year: 627 Days

Day: 12.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 44,133,750 km

• M1: 119,379 km (0.076 R)
• M2: 452,234 km (0.079 R)
• M3: 806,183 km (0.116 R)
• M4: 1,753,736 km (0.117 R)
• M5: 2,863,752 km (0.086 R)
• M6: 3,168,632 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.2

Radius: 13.3

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.22 AU - 1.58 AU

Year: 1087 Days

Day: 5.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,133,750 km

• M1: 165,455 km (0.097 R)
• M2: 598,541 km (0.066 R)
• M3: 1,137,393 km (0.116 R)
• M4: 1,867,430 km (0.09 R)
• M5: 2,538,825 km (0.07 R)
• M6: 2,997,343 km (0.079 R)
• M7: 3,751,915 km (0.118 R)
• M8: 4,755,417 km (0.083 R)
• M9: 5,518,965 km (0.069 R)
• M10: 7,291,101 km (0.105 R)
• M11: 7,941,553 km (0.116 R)
• M12: 8,739,807 km (0.083 R)
• M13: 9,416,438 km (0.093 R)
• M14: 10,036,970 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.2

Radius: 14.5

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.26 AU - 1.72 AU

Year: 1193 Days

Day: 6.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 44,133,750 km

• M1: 185,053 km (0.107 R)
• M2: 664,215 km (0.097 R)
• M3: 1,132,605 km (0.108 R)
• M4: 1,809,386 km (0.117 R)
• M5: 2,502,473 km (0.078 R)
• M6: 3,217,401 km (0.116 R)
• M7: 4,051,410 km (0.09 R)
• M8: 6,016,078 km (0.068 R)
• M9: 6,836,174 km (0.089 R)
• M10: 7,616,776 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 725

Radius: 10.6

Gravity: 6.45 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.73 AU - 2.13 AU

Year: 1759 Days

Day: 14.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,133,750 km

• M1: 131,796 km (0.102 R)
• M2: 567,425 km (0.058 R)
• M3: 908,209 km (0.102 R)
• M4: 1,290,730 km (0.115 R)
• M5: 1,640,789 km (0.108 R)
• M6: 2,160,343 km (0.102 R)
• M7: 3,481,741 km (0.045 R)
• M8: 3,969,579 km (0.094 R)
• M9: 4,663,564 km (0.118 R)
• M10: 6,805,656 km (0.081 R)
• M11: 7,655,970 km (0.048 R)
• M12: 8,062,577 km (0.088 R)
• M13: 8,392,141 km (0.108 R)
• M14: 9,014,618 km (0.115 R)
• M15: 9,634,103 km (0.083 R)
• M16: 10,039,812 km (0.094 R)
• M17: 10,705,672 km (0.087 R)
• M18: 11,701,994 km (0.035 R)
• M19: 13,084,428 km (0.039 R)
• M20: 13,964,363 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 77.4

Radius: 14.1

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 2 AU - 2.3 AU

Year: 2068 Days

Day: 5.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 44,133,750 km

• M1: 175,628 km (0.097 R)
• M2: 698,173 km (0.077 R)
• M3: 1,335,759 km (0.082 R)
• M4: 1,853,966 km (0.098 R)
• M5: 3,851,696 km (0.063 R)
• M6: 5,708,356 km (0.108 R)
• M7: 6,409,820 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.8

Radius: 10.7

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 5.45 AU - 6.23 AU

Year: 9258 Days

Day: 6.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 44,133,750 km

• M1: 133,142 km (0.083 R)
• M2: 517,758 km (0.108 R)
• M3: 1,602,044 km (0.032 R)
• M4: 2,003,415 km (0.118 R)
• M5: 2,471,955 km (0.085 R)
• M6: 3,255,250 km (0.059 R)
• M7: 5,666,169 km (0.104 R)
• M8: 7,943,348 km (0.096 R)
• M9: 10,927,077 km (0.101 R)
• M10: 11,613,582 km (0.107 R)
• M11: 14,337,759 km (0.05 R)
• M12: 15,550,998 km (0.066 R)
• M13: 16,831,406 km (0.037 R)
• M14: 18,919,493 km (0.077 R)
• M15: 19,372,176 km (0.055 R)
• M16: 23,952,564 km (0.076 R)
• M17: 25,565,827 km (0.082 R)
• M18: 30,839,601 km (0.107 R)
• M19: 32,423,842 km (0.088 R)
• M20: 33,181,556 km (0.103 R)
• M21: 36,562,767 km (0.084 R)
• M22: 39,183,871 km (0.05 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 361 - 18,507 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit