🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.58 AU - 0.72 AU

Year: 338 Days

Day: 41.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.3

Radius: 12.5

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.91 AU - 1.19 AU

Year: 695 Days

Day: 11.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 169.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,168,323 km

• M1: 155,432 km (0.108 R)
• M2: 548,426 km (0.096 R)
• M3: 1,400,386 km (0.04 R)
• M4: 1,924,726 km (0.109 R)
• M5: 2,328,640 km (0.091 R)
• M6: 2,882,302 km (0.059 R)
• M7: 3,604,112 km (0.092 R)
• M8: 4,767,235 km (0.051 R)
• M9: 6,048,092 km (0.111 R)
• M10: 6,508,854 km (0.118 R)
• M11: 7,592,092 km (0.085 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955.1

Radius: 10.1

Gravity: 9.36 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 2.26 AU - 2.6 AU

Year: 2446 Days

Day: 8.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 71,168,323 km

• M1: 125,662 km (0.111 R)
• M2: 602,431 km (0.115 R)
• M3: 1,146,219 km (0.081 R)
• M4: 1,498,223 km (0.09 R)
• M5: 1,997,431 km (0.112 R)
• M6: 2,384,889 km (0.101 R)
• M7: 3,742,490 km (0.111 R)
• M8: 4,062,480 km (0.081 R)
• M9: 4,850,711 km (0.087 R)
• M10: 6,613,572 km (0.091 R)
• M11: 7,204,933 km (0.084 R)
• M12: 9,156,138 km (0.095 R)
• M13: 9,928,661 km (0.115 R)
• M14: 10,311,632 km (0.113 R)
• M15: 10,944,730 km (0.096 R)
• M16: 11,729,969 km (0.067 R)
• M17: 12,864,968 km (0.117 R)
• M18: 13,320,344 km (0.082 R)
• M19: 13,645,570 km (0.061 R)
• M20: 14,312,028 km (0.113 R)
• M21: 17,973,735 km (0.109 R)
• M22: 18,774,533 km (0.098 R)
• M23: 19,420,347 km (0.102 R)
• M24: 20,385,851 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.2

Radius: 10.7

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.3 AU - 3.76 AU

Year: 3405 Days

Day: 11 Hours

Environment

Temp: -193 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,168,323 km

• M1: 133,292 km (0.067 R)
• M2: 949,498 km (0.102 R)
• M3: 1,368,821 km (0.074 R)
• M4: 2,103,047 km (0.105 R)
• M5: 2,661,795 km (0.065 R)
• M6: 4,598,639 km (0.094 R)
• M7: 5,099,043 km (0.054 R)
• M8: 6,821,364 km (0.075 R)
• M9: 10,190,757 km (0.102 R)
• M10: 10,970,461 km (0.099 R)
• M11: 12,688,592 km (0.065 R)
• M12: 14,100,946 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.8

Radius: 11.8

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 4.03 AU - 4.03 AU

Year: 5224 Days

Day: 7.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,168,323 km

• M1: 146,756 km (0.102 R)
• M2: 670,198 km (0.115 R)
• M3: 1,583,045 km (0.099 R)
• M4: 2,247,110 km (0.108 R)
• M5: 2,912,820 km (0.062 R)
• M6: 5,032,024 km (0.097 R)
• M7: 5,448,205 km (0.119 R)
• M8: 6,145,032 km (0.096 R)
• M9: 6,931,767 km (0.096 R)
• M10: 8,025,477 km (0.068 R)
• M11: 12,182,353 km (0.115 R)
• M12: 12,697,418 km (0.063 R)
• M13: 13,374,050 km (0.104 R)
• M14: 17,949,351 km (0.119 R)
• M15: 20,984,243 km (0.063 R)
• M16: 22,205,710 km (0.108 R)
• M17: 23,046,001 km (0.089 R)
• M18: 25,088,909 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.7

Radius: 8

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 4.61 AU - 5.53 AU

Year: 7371 Days

Day: 14.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,168,323 km

• M1: 99,931 km (0.107 R)
• M2: 1,287,589 km (0.116 R)
• M3: 3,973,619 km (0.118 R)
• M4: 4,692,137 km (0.104 R)
• M5: 5,733,638 km (0.116 R)
• M6: 6,063,800 km (0.073 R)
• M7: 6,362,996 km (0.093 R)
• M8: 8,502,245 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 449

Radius: 5.4

Gravity: 15.4 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 9.76 AU - 11.48 AU

Year: 22346 Days

Day: 23.7 Hours

Environment

Temp: -239 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 71,168,323 km

• M1: 67,169 km (0.101 R)
• M2: 510,129 km (0.117 R)
• M3: 1,074,861 km (0.085 R)
• M4: 1,644,679 km (0.06 R)
• M5: 2,064,750 km (0.119 R)
• M6: 2,310,689 km (0.045 R)
• M7: 2,530,598 km (0.069 R)
• M8: 2,861,658 km (0.113 R)
• M9: 3,907,347 km (0.046 R)
• M10: 5,149,009 km (0.101 R)
• M11: 6,082,649 km (0.068 R)
• M12: 7,687,236 km (0.089 R)
• M13: 10,533,036 km (0.104 R)
• M14: 18,881,196 km (0.043 R)
• M15: 22,325,089 km (0.037 R)
• M16: 23,628,236 km (0.113 R)
• M17: 23,833,035 km (0.112 R)
• M18: 29,943,211 km (0.101 R)
• M19: 33,035,698 km (0.118 R)
• M20: 40,721,887 km (0.059 R)
• M21: 45,449,479 km (0.108 R)
• M22: 49,854,089 km (0.104 R)
• M23: 66,170,878 km (0.109 R)
• M24: 69,265,759 km (0.119 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 347 - 17,457 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit