🌌 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: 4.8

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.54 AU - 0.56 AU

Year: 268 Days

Day: 12.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.6

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.47 AU - 0.73 AU

Year: 305 Days

Day: 16.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 325.2

Radius: 10.2

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.59 AU - 0.77 AU

Year: 368 Days

Day: 8.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 53,012,115 km

• M1: 126,859 km (0.112 R)
• M2: 499,507 km (0.108 R)
• M3: 1,238,072 km (0.092 R)
• M4: 1,610,720 km (0.042 R)
• M5: 1,935,796 km (0.087 R)
• M6: 2,494,544 km (0.096 R)
• M7: 2,943,637 km (0.108 R)
• M8: 3,382,857 km (0.064 R)
• M9: 3,707,185 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187.1

Radius: 11.9

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.58 AU - 0.84 AU

Year: 392 Days

Day: 11.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,012,115 km

• M1: 148,102 km (0.099 R)
• M2: 604,824 km (0.065 R)
• M3: 1,025,643 km (0.103 R)
• M4: 1,412,054 km (0.079 R)
• M5: 1,891,366 km (0.076 R)
• M6: 3,017,389 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.1

Radius: 13.5

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.08 AU - 1.28 AU

Year: 841 Days

Day: 5.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,012,115 km

• M1: 168,597 km (0.107 R)
• M2: 602,879 km (0.12 R)
• M3: 1,068,578 km (0.115 R)
• M4: 1,607,429 km (0.049 R)
• M5: 2,111,724 km (0.08 R)
• M6: 3,108,345 km (0.111 R)
• M7: 3,546,816 km (0.069 R)
• M8: 4,266,382 km (0.063 R)
• M9: 5,754,282 km (0.104 R)
• M10: 6,817,773 km (0.093 R)
• M11: 7,301,872 km (0.076 R)
• M12: 7,908,192 km (0.095 R)
• M13: 8,706,596 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.9

Radius: 14.2

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 2.77 AU - 3.55 AU

Year: 3685 Days

Day: 7.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,012,115 km

• M1: 176,525 km (0.036 R)
• M2: 781,499 km (0.117 R)
• M3: 2,123,841 km (0.07 R)
• M4: 2,865,996 km (0.117 R)
• M5: 3,676,966 km (0.078 R)
• M6: 5,677,389 km (0.11 R)
• M7: 8,186,444 km (0.06 R)
• M8: 8,887,609 km (0.117 R)
• M9: 10,817,123 km (0.09 R)
• M10: 11,276,687 km (0.08 R)
• M11: 12,460,306 km (0.098 R)
• M12: 13,341,737 km (0.079 R)
• M13: 16,509,771 km (0.087 R)
• M14: 17,120,130 km (0.117 R)
• M15: 18,445,118 km (0.081 R)
• M16: 19,162,889 km (0.077 R)
• M17: 20,654,679 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.9

Radius: 12.1

Gravity: 2.83 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 3.7 AU - 4.68 AU

Year: 5626 Days

Day: 9.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,012,115 km

• M1: 151,842 km (0.03 R)
• M2: 915,240 km (0.101 R)
• M3: 1,422,377 km (0.112 R)
• M4: 1,923,081 km (0.091 R)
• M5: 2,524,165 km (0.073 R)
• M6: 3,993,515 km (0.076 R)
• M7: 5,911,809 km (0.081 R)
• M8: 6,894,068 km (0.088 R)
• M9: 9,701,123 km (0.092 R)
• M10: 17,151,994 km (0.106 R)
• M11: 17,818,902 km (0.081 R)
• M12: 26,341,492 km (0.087 R)
• M13: 26,742,714 km (0.049 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 248

Radius: 6

Gravity: 6.89 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 7.25 AU - 11.83 AU

Year: 19330 Days

Day: 25 Hours

Environment

Temp: -236 °C

Axial Tilt: 75.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 53,012,115 km

• M1: 76,744 km (0.097 R)
• M2: 264,190 km (0.041 R)
• M3: 544,087 km (0.102 R)
• M4: 942,167 km (0.07 R)
• M5: 1,713,494 km (0.116 R)
• M6: 2,047,097 km (0.073 R)
• M7: 2,248,456 km (0.069 R)
• M8: 2,777,883 km (0.113 R)
• M9: 3,643,606 km (0.114 R)
• M10: 5,061,195 km (0.067 R)
• M11: 5,535,720 km (0.041 R)
• M12: 6,612,675 km (0.106 R)
• M13: 7,647,593 km (0.047 R)
• M14: 11,281,923 km (0.105 R)
• M15: 13,311,518 km (0.078 R)
• M16: 14,082,396 km (0.073 R)
• M17: 14,612,570 km (0.114 R)
• M18: 14,814,827 km (0.042 R)
• M19: 18,232,240 km (0.102 R)
• M20: 18,782,312 km (0.112 R)
• M21: 28,731,917 km (0.118 R)
• M22: 29,049,663 km (0.088 R)
• M23: 30,672,949 km (0.109 R)
• M24: 33,863,423 km (0.046 R)
• M25: 36,768,464 km (0.085 R)
• M26: 37,519,894 km (0.12 R)
• M27: 38,026,432 km (0.084 R)
• M28: 39,835,370 km (0.065 R)
• M29: 47,646,024 km (0.097 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 16,658 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit