🌌 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: 2.1

Radius: 1.35

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.53 AU - 0.55 AU

Year: 252 Days

Day: 43.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 16.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 32,298,867 km

• M1: 32,463 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.53 AU - 0.59 AU

Year: 266 Days

Day: 32.9 Hours

Environment

Temp: -113 °C

Axial Tilt: 14.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.5

Radius: 11

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.68 AU - 0.96 AU

Year: 472 Days

Day: 12.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 32,298,867 km

• M1: 136,882 km (0.093 R)
• M2: 566,228 km (0.094 R)
• M3: 1,211,593 km (0.114 R)
• M4: 1,586,037 km (0.074 R)
• M5: 1,943,127 km (0.061 R)
• M6: 2,354,222 km (0.091 R)
• M7: 3,156,964 km (0.115 R)
• M8: 3,572,248 km (0.067 R)
• M9: 3,975,713 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372

Radius: 14.2

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.11 AU - 1.23 AU

Year: 805 Days

Day: 7 Hours

Environment

Temp: -172 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,298,867 km

• M1: 179,817 km (0.072 R)
• M2: 684,859 km (0.108 R)
• M3: 1,165,068 km (0.114 R)
• M4: 1,615,059 km (0.043 R)
• M5: 2,138,801 km (0.09 R)
• M6: 2,700,690 km (0.088 R)
• M7: 3,225,330 km (0.026 R)
• M8: 3,859,176 km (0.039 R)
• M9: 4,422,263 km (0.11 R)
• M10: 5,309,827 km (0.084 R)
• M11: 6,850,086 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 915.7

Radius: 13.5

Gravity: 5.02 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.13 AU - 1.85 AU

Year: 1156 Days

Day: 6.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 32,298,867 km

• M1: 179,218 km (0.046 R)
• M2: 632,799 km (0.118 R)
• M3: 1,097,151 km (0.067 R)
• M4: 1,578,557 km (0.114 R)
• M5: 1,998,328 km (0.053 R)
• M6: 2,592,980 km (0.104 R)
• M7: 3,485,930 km (0.092 R)
• M8: 4,372,895 km (0.036 R)
• M9: 5,342,888 km (0.097 R)
• M10: 6,788,153 km (0.099 R)
• M11: 8,537,251 km (0.108 R)
• M12: 9,394,148 km (0.096 R)
• M13: 10,114,013 km (0.061 R)
• M14: 10,569,987 km (0.07 R)
• M15: 11,453,363 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650.8

Radius: 9.9

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.54 AU - 1.96 AU

Year: 1472 Days

Day: 12.1 Hours

Environment

Temp: -175 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,298,867 km

• M1: 123,119 km (0.033 R)
• M2: 481,556 km (0.08 R)
• M3: 907,012 km (0.081 R)
• M4: 1,224,159 km (0.099 R)
• M5: 1,849,329 km (0.054 R)
• M6: 2,172,311 km (0.098 R)
• M7: 2,623,049 km (0.073 R)
• M8: 3,423,846 km (0.053 R)
• M9: 3,984,689 km (0.111 R)
• M10: 4,605,819 km (0.066 R)
• M11: 6,133,812 km (0.103 R)
• M12: 7,090,341 km (0.056 R)
• M13: 7,430,377 km (0.102 R)
• M14: 7,808,710 km (0.086 R)
• M15: 8,751,625 km (0.113 R)
• M16: 9,800,904 km (0.107 R)
• M17: 11,926,690 km (0.062 R)
• M18: 12,865,118 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 286.4

Radius: 12.5

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.9 AU - 2.9 AU

Year: 2364 Days

Day: 6.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,298,867 km

• M1: 155,582 km (0.105 R)
• M2: 578,944 km (0.098 R)
• M3: 1,159,234 km (0.064 R)
• M4: 2,127,132 km (0.091 R)
• M5: 3,463,041 km (0.112 R)
• M6: 5,848,080 km (0.103 R)
• M7: 7,462,540 km (0.11 R)
• M8: 7,930,034 km (0.109 R)
• M9: 8,623,270 km (0.119 R)
• M10: 9,076,851 km (0.108 R)
• M11: 11,992,513 km (0.062 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.2

Radius: 8.2

Gravity: 10.86 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 2.28 AU - 3.54 AU

Year: 3156 Days

Day: 11.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 54.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 32,298,867 km

• M1: 103,372 km (0.098 R)
• M2: 546,780 km (0.093 R)
• M3: 842,386 km (0.095 R)
• M4: 1,121,535 km (0.112 R)
• M5: 1,647,970 km (0.088 R)
• M6: 2,093,173 km (0.053 R)
• M7: 2,842,659 km (0.068 R)
• M8: 3,099,369 km (0.072 R)
• M9: 3,581,672 km (0.112 R)
• M10: 5,031,874 km (0.118 R)
• M11: 5,306,984 km (0.084 R)
• M12: 5,833,270 km (0.057 R)
• M13: 6,717,244 km (0.077 R)
• M14: 7,175,761 km (0.109 R)
• M15: 9,788,338 km (0.079 R)
• M16: 10,418,145 km (0.102 R)
• M17: 13,687,308 km (0.102 R)
• M18: 13,979,173 km (0.109 R)
• M19: 15,239,984 km (0.095 R)
• M20: 15,553,541 km (0.107 R)
• M21: 16,139,516 km (0.095 R)
• M22: 18,572,426 km (0.095 R)
• M23: 20,282,031 km (0.104 R)
• M24: 21,174,980 km (0.108 R)
• M25: 21,434,981 km (0.12 R)
• M26: 21,762,750 km (0.084 R)
• M27: 22,160,681 km (0.071 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 984.5

Radius: 13.6

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.36 AU - 6.44 AU

Year: 7979 Days

Day: 7.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 32,298,867 km

• M1: 169,195 km (0.087 R)
• M2: 629,957 km (0.108 R)
• M3: 1,186,910 km (0.091 R)
• M4: 3,226,377 km (0.065 R)
• M5: 5,590,472 km (0.061 R)
• M6: 7,388,938 km (0.113 R)
• M7: 10,796,628 km (0.085 R)
• M8: 16,208,480 km (0.058 R)
• M9: 17,546,484 km (0.065 R)
• M10: 19,964,434 km (0.107 R)
• M11: 21,500,954 km (0.119 R)
• M12: 32,743,982 km (0.066 R)
• M13: 35,686,422 km (0.05 R)
• M14: 36,507,864 km (0.072 R)
• M15: 39,047,737 km (0.066 R)
• M16: 46,116,685 km (0.078 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 311.6

Radius: 14.2

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 5.39 AU - 5.61 AU

Year: 8201 Days

Day: 8.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 32,298,867 km

• M1: 176,675 km (0.119 R)
• M2: 715,527 km (0.093 R)
• M3: 1,725,761 km (0.069 R)
• M4: 2,539,573 km (0.108 R)
• M5: 3,406,344 km (0.051 R)
• M6: 8,247,031 km (0.078 R)
• M7: 9,039,003 km (0.032 R)
• M8: 11,722,190 km (0.081 R)
• M9: 12,316,692 km (0.099 R)
• M10: 12,775,658 km (0.104 R)
• M11: 15,537,833 km (0.118 R)
• M12: 16,684,950 km (0.045 R)
• M13: 17,247,737 km (0.075 R)
• M14: 18,477,431 km (0.081 R)
• M15: 21,696,030 km (0.115 R)
• M16: 28,242,582 km (0.026 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 243 - 11,537 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit