🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.44 AU - 0.66 AU

Year: 268 Days

Day: 33.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 37.6 °

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: 1.01

Radius: 1

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 17.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 18.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,123,405 km

• M1: 229,932 km (0.104 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.61 AU - 0.71 AU

Year: 352 Days

Day: 33.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 20.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 492.5

Radius: 8.3

Gravity: 7.15 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.89 AU - 1.03 AU

Year: 617 Days

Day: 8.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,123,405 km

• M1: 103,223 km (0.034 R)
• M2: 571,613 km (0.088 R)
• M3: 1,069,475 km (0.112 R)
• M4: 1,345,334 km (0.113 R)
• M5: 1,777,671 km (0.117 R)
• M6: 2,124,589 km (0.083 R)
• M7: 2,416,604 km (0.116 R)
• M8: 2,724,626 km (0.067 R)
• M9: 3,770,016 km (0.118 R)
• M10: 4,480,755 km (0.102 R)
• M11: 5,244,153 km (0.054 R)
• M12: 5,657,043 km (0.082 R)
• M13: 6,412,662 km (0.049 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852.9

Radius: 9.8

Gravity: 8.88 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.81 AU - 1.29 AU

Year: 706 Days

Day: 14 Hours

Environment

Temp: -160 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,123,405 km

• M1: 121,922 km (0.114 R)
• M2: 637,137 km (0.115 R)
• M3: 961,765 km (0.049 R)
• M4: 1,630,916 km (0.088 R)
• M5: 2,232,150 km (0.106 R)
• M6: 2,664,488 km (0.106 R)
• M7: 3,100,865 km (0.077 R)
• M8: 3,472,915 km (0.109 R)
• M9: 3,995,011 km (0.118 R)
• M10: 4,323,229 km (0.103 R)
• M11: 5,418,136 km (0.105 R)
• M12: 6,040,612 km (0.061 R)
• M13: 6,929,074 km (0.03 R)
• M14: 7,544,819 km (0.12 R)
• M15: 8,221,450 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.7

Radius: 13

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 2.17 AU - 2.23 AU

Year: 2141 Days

Day: 12.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 60,123,405 km

• M1: 161,715 km (0.107 R)
• M2: 631,303 km (0.034 R)
• M3: 2,326,396 km (0.108 R)
• M4: 3,452,719 km (0.118 R)
• M5: 4,851,459 km (0.114 R)
• M6: 6,560,465 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.8

Radius: 11.5

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 2.83 AU - 4.07 AU

Year: 4204 Days

Day: 10 Hours

Environment

Temp: -212 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 60,123,405 km

• M1: 143,165 km (0.114 R)
• M2: 856,448 km (0.038 R)
• M3: 1,321,548 km (0.076 R)
• M4: 1,769,593 km (0.092 R)
• M5: 2,412,864 km (0.09 R)
• M6: 5,762,510 km (0.089 R)
• M7: 6,149,520 km (0.026 R)
• M8: 6,943,136 km (0.093 R)
• M9: 7,313,391 km (0.058 R)
• M10: 7,732,265 km (0.117 R)
• M11: 8,315,846 km (0.047 R)
• M12: 8,850,360 km (0.07 R)
• M13: 10,030,687 km (0.117 R)
• M14: 10,993,948 km (0.085 R)
• M15: 14,254,882 km (0.039 R)
• M16: 15,471,711 km (0.112 R)
• M17: 16,517,849 km (0.081 R)
• M18: 19,141,646 km (0.101 R)
• M19: 20,007,070 km (0.102 R)
• M20: 20,415,173 km (0.076 R)
• M21: 21,177,972 km (0.054 R)
• M22: 24,574,891 km (0.12 R)
• M23: 26,240,215 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.7

Radius: 14.5

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 3.03 AU - 3.93 AU

Year: 4259 Days

Day: 6.9 Hours

Environment

Temp: -202 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 60,123,405 km

• M1: 180,265 km (0.117 R)
• M2: 748,289 km (0.058 R)
• M3: 1,287,290 km (0.105 R)
• M4: 1,967,062 km (0.12 R)
• M5: 2,526,110 km (0.115 R)
• M6: 3,153,374 km (0.091 R)
• M7: 3,607,403 km (0.068 R)
• M8: 4,674,634 km (0.104 R)
• M9: 5,162,174 km (0.114 R)
• M10: 5,627,274 km (0.058 R)
• M11: 7,706,235 km (0.03 R)
• M12: 8,842,581 km (0.093 R)
• M13: 10,341,850 km (0.057 R)
• M14: 12,004,780 km (0.06 R)
• M15: 12,727,637 km (0.061 R)
• M16: 13,377,341 km (0.076 R)
• M17: 15,460,342 km (0.081 R)
• M18: 17,143,766 km (0.113 R)
• M19: 21,847,871 km (0.111 R)
• M20: 23,146,231 km (0.114 R)
• M21: 24,571,749 km (0.077 R)
• M22: 26,214,783 km (0.071 R)
• M23: 27,597,516 km (0.072 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.1

Radius: 12.1

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 3.32 AU - 4.42 AU

Year: 4994 Days

Day: 11.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 60,123,405 km

• M1: 150,495 km (0.109 R)
• M2: 1,391,859 km (0.057 R)
• M3: 2,949,472 km (0.071 R)
• M4: 3,532,006 km (0.086 R)
• M5: 4,439,167 km (0.086 R)
• M6: 7,992,715 km (0.087 R)
• M7: 9,520,558 km (0.073 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 238.6

Radius: 6.3

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 10.47 AU - 11.45 AU

Year: 23803 Days

Day: 18.4 Hours

Environment

Temp: -228 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 60,123,405 km

• M1: 78,389 km (0.11 R)
• M2: 297,700 km (0.082 R)
• M3: 544,387 km (0.092 R)
• M4: 818,450 km (0.117 R)
• M5: 1,027,887 km (0.083 R)
• M6: 1,260,212 km (0.07 R)
• M7: 1,667,418 km (0.063 R)
• M8: 2,236,189 km (0.079 R)
• M9: 4,216,715 km (0.119 R)
• M10: 6,272,639 km (0.091 R)
• M11: 8,375,835 km (0.046 R)
• M12: 9,905,773 km (0.106 R)
• M13: 11,315,733 km (0.082 R)
• M14: 11,854,584 km (0.05 R)
• M15: 12,347,808 km (0.093 R)
• M16: 14,737,784 km (0.051 R)
• M17: 16,644,409 km (0.108 R)
• M18: 19,547,505 km (0.088 R)
• M19: 20,585,714 km (0.115 R)
• M20: 22,677,392 km (0.117 R)
• M21: 23,823,012 km (0.074 R)
• M22: 25,409,797 km (0.038 R)
• M23: 36,049,945 km (0.071 R)
• M24: 39,618,154 km (0.097 R)
• M25: 47,447,209 km (0.086 R)
• M26: 52,048,690 km (0.105 R)
• M27: 53,202,388 km (0.047 R)
• M28: 55,389,958 km (0.114 R)
• M29: 59,227,293 km (0.108 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 200 - 12,562 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit