🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.5 AU - 0.58 AU

Year: 252 Days

Day: 22.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.6

Radius: 9.6

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.65 AU - 0.77 AU

Year: 380 Days

Day: 8 Hours

Environment

Temp: -143 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,776,983 km

• M1: 119,529 km (0.068 R)
• M2: 423,063 km (0.08 R)
• M3: 879,037 km (0.084 R)
• M4: 1,300,155 km (0.034 R)
• M5: 2,033,185 km (0.05 R)
• M6: 2,455,499 km (0.105 R)
• M7: 3,041,175 km (0.12 R)
• M8: 3,384,801 km (0.104 R)
• M9: 4,111,249 km (0.117 R)
• M10: 5,320,448 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.2

Radius: 15

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.79 AU - 0.95 AU

Year: 516 Days

Day: 5.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,776,983 km

• M1: 186,549 km (0.097 R)
• M2: 674,986 km (0.056 R)
• M3: 1,218,774 km (0.082 R)
• M4: 1,744,760 km (0.063 R)
• M5: 3,064,812 km (0.091 R)
• M6: 4,037,198 km (0.102 R)
• M7: 4,504,691 km (0.113 R)
• M8: 5,480,219 km (0.101 R)
• M9: 5,963,420 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948.5

Radius: 13.4

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.8 AU - 0.98 AU

Year: 534 Days

Day: 6.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,776,983 km

• M1: 166,652 km (0.096 R)
• M2: 772,224 km (0.038 R)
• M3: 1,301,053 km (0.063 R)
• M4: 1,856,360 km (0.089 R)
• M5: 2,897,262 km (0.074 R)
• M6: 3,509,267 km (0.118 R)
• M7: 4,221,353 km (0.098 R)
• M8: 4,829,468 km (0.053 R)
• M9: 5,730,646 km (0.105 R)
• M10: 6,163,881 km (0.059 R)
• M11: 6,618,808 km (0.086 R)
• M12: 7,354,531 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.4

Radius: 10

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.28 AU - 1.56 AU

Year: 1076 Days

Day: 8.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,776,983 km

• M1: 124,316 km (0.118 R)
• M2: 480,209 km (0.115 R)
• M3: 899,981 km (0.054 R)
• M4: 1,325,288 km (0.076 R)
• M5: 1,788,592 km (0.066 R)
• M6: 2,419,895 km (0.109 R)
• M7: 2,875,570 km (0.078 R)
• M8: 4,628,259 km (0.04 R)
• M9: 5,297,709 km (0.103 R)
• M10: 5,797,965 km (0.113 R)
• M11: 6,349,981 km (0.096 R)
• M12: 7,198,650 km (0.11 R)
• M13: 7,789,860 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 931.3

Radius: 13.1

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 2.09 AU - 2.59 AU

Year: 2276 Days

Day: 6 Hours

Environment

Temp: -204 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,776,983 km

• M1: 163,062 km (0.069 R)
• M2: 759,209 km (0.089 R)
• M3: 1,223,262 km (0.106 R)
• M4: 1,789,939 km (0.098 R)
• M5: 3,741,443 km (0.065 R)
• M6: 4,596,993 km (0.113 R)
• M7: 5,455,236 km (0.099 R)
• M8: 6,067,241 km (0.087 R)
• M9: 7,071,043 km (0.093 R)
• M10: 7,490,216 km (0.026 R)
• M11: 8,478,011 km (0.094 R)
• M12: 10,101,447 km (0.09 R)
• M13: 10,557,122 km (0.117 R)
• M14: 11,965,436 km (0.054 R)
• M15: 12,606,014 km (0.081 R)
• M16: 14,956,496 km (0.101 R)
• M17: 15,649,882 km (0.082 R)
• M18: 16,729,979 km (0.111 R)
• M19: 19,735,400 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.7

Radius: 14.9

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 2.02 AU - 2.86 AU

Year: 2423 Days

Day: 14.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,776,983 km

• M1: 216,618 km (0.069 R)
• M2: 840,590 km (0.096 R)
• M3: 2,644,292 km (0.032 R)
• M4: 3,284,720 km (0.09 R)
• M5: 6,518,877 km (0.118 R)
• M6: 7,614,232 km (0.115 R)
• M7: 9,419,879 km (0.081 R)
• M8: 10,237,132 km (0.088 R)
• M9: 11,716,206 km (0.038 R)
• M10: 12,277,647 km (0.059 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.5

Radius: 14.2

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 3.17 AU - 3.67 AU

Year: 4021 Days

Day: 7.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,776,983 km

• M1: 177,423 km (0.065 R)
• M2: 766,240 km (0.079 R)
• M3: 1,380,639 km (0.085 R)
• M4: 1,954,945 km (0.108 R)
• M5: 2,674,062 km (0.101 R)
• M6: 4,936,580 km (0.117 R)
• M7: 5,719,725 km (0.112 R)
• M8: 7,116,520 km (0.116 R)
• M9: 8,087,560 km (0.051 R)
• M10: 9,707,705 km (0.084 R)
• M11: 11,271,601 km (0.062 R)
• M12: 12,915,682 km (0.096 R)
• M13: 14,315,768 km (0.068 R)
• M14: 15,627,742 km (0.086 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 169.7

Radius: 13.6

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 5.07 AU - 6.57 AU

Year: 8927 Days

Day: 13 Hours

Environment

Temp: -225 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,776,983 km

• M1: 169,195 km (0.099 R)
• M2: 645,515 km (0.113 R)
• M3: 1,368,821 km (0.113 R)
• M4: 1,840,203 km (0.079 R)
• M5: 2,663,590 km (0.119 R)
• M6: 3,295,043 km (0.065 R)
• M7: 3,870,845 km (0.115 R)
• M8: 8,892,097 km (0.083 R)
• M9: 10,610,229 km (0.107 R)
• M10: 11,094,776 km (0.11 R)
• M11: 11,966,633 km (0.093 R)
• M12: 13,082,483 km (0.031 R)
• M13: 15,297,878 km (0.04 R)
• M14: 17,814,563 km (0.111 R)
• M15: 18,437,190 km (0.077 R)
• M16: 21,841,888 km (0.075 R)
• M17: 22,991,248 km (0.089 R)
• M18: 25,021,441 km (0.09 R)
• M19: 27,911,073 km (0.069 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 392.8

Radius: 6.9

Gravity: 8.25 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 8.69 AU - 9.21 AU

Year: 17024 Days

Day: 16.6 Hours

Environment

Temp: -234 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 56,776,983 km

• M1: 112,647 km (0.083 R)
• M2: 525,837 km (0.116 R)
• M3: 950,545 km (0.091 R)
• M4: 1,807,591 km (0.093 R)
• M5: 2,104,692 km (0.091 R)
• M6: 3,422,799 km (0.079 R)
• M7: 4,593,103 km (0.048 R)
• M8: 5,425,915 km (0.057 R)
• M9: 6,316,321 km (0.057 R)
• M10: 6,796,381 km (0.077 R)
• M11: 7,874,533 km (0.059 R)
• M12: 16,532,958 km (0.085 R)
• M13: 17,676,484 km (0.107 R)
• M14: 19,530,900 km (0.073 R)
• M15: 22,965,368 km (0.116 R)
• M16: 28,463,538 km (0.057 R)
• M17: 31,229,303 km (0.09 R)
• M18: 31,803,161 km (0.069 R)
• M19: 32,150,826 km (0.096 R)
• M20: 38,064,430 km (0.098 R)
• M21: 43,372,462 km (0.071 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 233 - 15,087 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit