🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.43 AU - 0.63 AU

Year: 253 Days

Day: 39.6 Hours

Environment

Temp: -115 °C

Axial Tilt: 42.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 41,809,157 km

• M1: 71,508 km (0.111 R)
• M2: 108,309 km (0.042 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.5 AU - 0.68 AU

Year: 297 Days

Day: 25.6 Hours

Environment

Temp: -118 °C

Axial Tilt: 46.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,809,157 km

• M1: 105,915 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.7

Radius: 12.9

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.58 AU - 0.78 AU

Year: 368 Days

Day: 8.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 41,809,157 km

• M1: 160,369 km (0.086 R)
• M2: 600,486 km (0.111 R)
• M3: 1,025,643 km (0.116 R)
• M4: 1,768,696 km (0.11 R)
• M5: 2,197,892 km (0.055 R)
• M6: 2,819,471 km (0.082 R)
• M7: 3,314,939 km (0.109 R)
• M8: 3,821,029 km (0.103 R)
• M9: 4,522,792 km (0.04 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 719.6

Radius: 14.9

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.96 AU - 1.02 AU

Year: 646 Days

Day: 14 Hours

Environment

Temp: -167 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,809,157 km

• M1: 185,352 km (0.066 R)
• M2: 724,951 km (0.11 R)
• M3: 1,432,250 km (0.108 R)
• M4: 1,898,696 km (0.115 R)
• M5: 2,428,123 km (0.119 R)
• M6: 2,997,493 km (0.075 R)
• M7: 3,806,967 km (0.072 R)
• M8: 5,075,257 km (0.098 R)
• M9: 5,677,688 km (0.079 R)
• M10: 6,548,497 km (0.064 R)
• M11: 7,242,482 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.2

Radius: 14.5

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.05 AU - 1.11 AU

Year: 736 Days

Day: 5.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,809,157 km

• M1: 180,415 km (0.09 R)
• M2: 641,027 km (0.103 R)
• M3: 1,138,739 km (0.077 R)
• M4: 1,766,751 km (0.098 R)
• M5: 2,375,165 km (0.112 R)
• M6: 3,319,577 km (0.091 R)
• M7: 4,050,811 km (0.111 R)
• M8: 5,208,549 km (0.111 R)
• M9: 6,395,907 km (0.113 R)
• M10: 6,948,223 km (0.085 R)
• M11: 7,421,850 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 476.1

Radius: 12

Gravity: 3.31 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.16 AU - 1.4 AU

Year: 950 Days

Day: 7.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,809,157 km

• M1: 149,299 km (0.103 R)
• M2: 554,709 km (0.109 R)
• M3: 935,884 km (0.093 R)
• M4: 1,329,476 km (0.107 R)
• M5: 1,716,785 km (0.07 R)
• M6: 2,180,688 km (0.097 R)
• M7: 2,728,067 km (0.106 R)
• M8: 3,352,638 km (0.069 R)
• M9: 3,889,395 km (0.081 R)
• M10: 4,353,298 km (0.071 R)
• M11: 5,411,404 km (0.105 R)
• M12: 6,698,394 km (0.114 R)
• M13: 7,094,679 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.4

Radius: 11

Gravity: 7.24 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 4.8 AU - 4.82 AU

Year: 6920 Days

Day: 14.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 41,809,157 km

• M1: 151,393 km (0.095 R)
• M2: 874,848 km (0.027 R)
• M3: 1,288,038 km (0.025 R)
• M4: 2,398,652 km (0.118 R)
• M5: 3,015,893 km (0.079 R)
• M6: 4,086,266 km (0.081 R)
• M7: 4,969,043 km (0.061 R)
• M8: 6,704,977 km (0.099 R)
• M9: 7,073,287 km (0.079 R)
• M10: 7,931,230 km (0.101 R)
• M11: 8,989,037 km (0.104 R)
• M12: 11,696,310 km (0.088 R)
• M13: 13,466,052 km (0.116 R)
• M14: 15,281,422 km (0.098 R)
• M15: 16,846,964 km (0.083 R)
• M16: 19,170,518 km (0.115 R)
• M17: 28,452,767 km (0.092 R)
• M18: 28,837,533 km (0.115 R)
• M19: 29,421,264 km (0.062 R)
• M20: 38,677,632 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 327.2

Radius: 8

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 5.48 AU - 8.24 AU

Year: 11787 Days

Day: 16.7 Hours

Environment

Temp: -233 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 41,809,157 km

• M1: 99,931 km (0.101 R)
• M2: 531,671 km (0.106 R)
• M3: 902,374 km (0.05 R)
• M4: 1,248,394 km (0.083 R)
• M5: 1,738,776 km (0.068 R)
• M6: 2,094,520 km (0.118 R)
• M7: 4,485,393 km (0.099 R)
• M8: 4,946,753 km (0.051 R)
• M9: 5,439,379 km (0.076 R)
• M10: 6,888,683 km (0.039 R)
• M11: 9,848,925 km (0.106 R)
• M12: 14,902,042 km (0.059 R)
• M13: 17,555,310 km (0.104 R)
• M14: 19,067,296 km (0.097 R)
• M15: 21,374,843 km (0.1 R)
• M16: 21,776,812 km (0.031 R)
• M17: 22,183,719 km (0.118 R)
• M18: 23,605,347 km (0.053 R)
• M19: 26,352,563 km (0.086 R)
• M20: 28,137,564 km (0.104 R)
• M21: 30,607,276 km (0.12 R)
• M22: 37,697,766 km (0.106 R)
• M23: 39,597,060 km (0.049 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 19,427 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit