🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.48 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.25

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.95 AU - 0.97 AU

Year: 342 Days

Day: 39 Hours

Environment

Temp: 102 °C

Axial Tilt: 48.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.23

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.28 AU - 1.36 AU

Year: 551 Days

Day: 36.7 Hours

Environment

Temp: -11 °C

Axial Tilt: 9.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.75 AU - 2.13 AU

Year: 982 Days

Day: 27.9 Hours

Environment

Temp: -57 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 80,362,578 km

• M1: 88,412 km (0.065 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.99 AU - 2.49 AU

Year: 1218 Days

Day: 22.7 Hours

Environment

Temp: -85 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 80,362,578 km

• M1: 27,227 km (0.095 R)
• M2: 172,337 km (0.037 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 2.24 AU - 2.9 AU

Year: 1497 Days

Day: 18.5 Hours

Environment

Temp: -86 °C

Axial Tilt: 26.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.44 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.9 AU - 4.98 AU

Year: 3400 Days

Day: 31.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 670.1

Radius: 9.1

Gravity: 8.09 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 7.7 AU - 7.8 AU

Year: 7841 Days

Day: 10.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 80,362,578 km

• M1: 113,246 km (0.052 R)
• M2: 431,141 km (0.099 R)
• M3: 751,131 km (0.095 R)
• M4: 1,362,238 km (0.112 R)
• M5: 1,685,070 km (0.06 R)
• M6: 2,140,446 km (0.037 R)
• M7: 2,525,062 km (0.081 R)
• M8: 2,893,971 km (0.082 R)
• M9: 3,321,073 km (0.038 R)
• M10: 3,716,759 km (0.086 R)
• M11: 4,196,220 km (0.058 R)
• M12: 5,006,891 km (0.052 R)
• M13: 5,688,758 km (0.095 R)
• M14: 6,361,201 km (0.11 R)
• M15: 7,664,198 km (0.093 R)
• M16: 8,357,734 km (0.113 R)
• M17: 8,828,369 km (0.039 R)
• M18: 10,640,597 km (0.11 R)
• M19: 12,912,091 km (0.066 R)
• M20: 13,952,545 km (0.108 R)
• M21: 14,251,142 km (0.101 R)
• M22: 15,809,204 km (0.088 R)
• M23: 16,596,089 km (0.095 R)
• M24: 17,340,039 km (0.108 R)
• M25: 20,233,710 km (0.093 R)
• M26: 20,926,648 km (0.12 R)
• M27: 23,017,278 km (0.096 R)
• M28: 23,434,656 km (0.12 R)
• M29: 24,113,082 km (0.052 R)
• M30: 24,457,157 km (0.09 R)
• M31: 31,123,538 km (0.091 R)
• M32: 32,358,319 km (0.062 R)
• M33: 34,488,443 km (0.117 R)
• M34: 36,937,659 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 603.7

Radius: 11.8

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 6.85 AU - 9.35 AU

Year: 8378 Days

Day: 14.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 80,362,578 km

• M1: 146,756 km (0.115 R)
• M2: 635,492 km (0.118 R)
• M3: 1,492,837 km (0.109 R)
• M4: 3,404,997 km (0.049 R)
• M5: 4,398,925 km (0.091 R)
• M6: 4,789,525 km (0.12 R)
• M7: 6,626,438 km (0.109 R)
• M8: 9,939,881 km (0.1 R)
• M9: 12,774,312 km (0.1 R)
• M10: 13,284,590 km (0.094 R)
• M11: 13,867,573 km (0.113 R)
• M12: 17,661,076 km (0.114 R)
• M13: 21,297,202 km (0.113 R)
• M14: 27,597,217 km (0.047 R)
• M15: 28,932,976 km (0.067 R)
• M16: 30,111,807 km (0.086 R)
• M17: 31,836,222 km (0.103 R)
• M18: 38,920,429 km (0.11 R)
• M19: 40,356,419 km (0.062 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 661.4

Radius: 3.4

Gravity: 57.21 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 12.89 AU - 18.03 AU

Year: 22092 Days

Day: 20.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 80,362,578 km

• M1: 46,675 km (0.079 R)
• M2: 231,278 km (0.057 R)
• M3: 1,786,647 km (0.085 R)
• M4: 2,104,244 km (0.064 R)
• M5: 3,369,243 km (0.088 R)
• M6: 9,434,091 km (0.076 R)
• M7: 9,549,879 km (0.097 R)
• M8: 17,046,827 km (0.105 R)
• M9: 20,126,150 km (0.117 R)
• M10: 21,295,706 km (0.056 R)
• M11: 28,306,610 km (0.099 R)
• M12: 32,065,107 km (0.104 R)
• M13: 37,866,063 km (0.068 R)
• M14: 51,130,458 km (0.112 R)
• M15: 52,026,699 km (0.115 R)
• M16: 57,625,249 km (0.114 R)
• M17: 58,595,840 km (0.113 R)
• M18: 69,561,364 km (0.034 R)
• M19: 76,802,051 km (0.086 R)
• M20: 79,163,752 km (0.043 R)

Kuiper Belt

Range: 30.2 - 50.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 12,913 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit