🌌 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: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.5 AU - 0.6 AU

Year: 263 Days

Day: 13 Hours

Environment

Temp: -125 °C

Axial Tilt: 15.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 38,707,608 km

• M1: 71,209 km (0.061 R)
• M2: 260,749 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.48 AU - 0.76 AU

Year: 315 Days

Day: 30.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 39.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.6

Radius: 12.9

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.67 AU - 0.85 AU

Year: 428 Days

Day: 7.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 38,707,608 km

• M1: 162,912 km (0.098 R)
• M2: 696,827 km (0.12 R)
• M3: 1,461,122 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.9

Radius: 14.6

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.99 AU - 1.13 AU

Year: 705 Days

Day: 12.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,707,608 km

• M1: 181,612 km (0.1 R)
• M2: 819,497 km (0.092 R)
• M3: 1,396,795 km (0.074 R)
• M4: 2,613,774 km (0.03 R)
• M5: 3,229,968 km (0.103 R)
• M6: 3,730,522 km (0.089 R)
• M7: 4,421,814 km (0.107 R)
• M8: 5,356,053 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.7

Radius: 12.8

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.48 AU - 1.98 AU

Year: 1469 Days

Day: 5.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,707,608 km

• M1: 159,471 km (0.072 R)
• M2: 1,130,511 km (0.086 R)
• M3: 1,532,032 km (0.081 R)
• M4: 2,240,677 km (0.039 R)
• M5: 2,796,882 km (0.032 R)
• M6: 4,068,613 km (0.078 R)
• M7: 5,075,407 km (0.1 R)
• M8: 6,282,363 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 950.7

Radius: 10.2

Gravity: 9.14 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 2.02 AU - 3.04 AU

Year: 2598 Days

Day: 6.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 38,707,608 km

• M1: 126,859 km (0.103 R)
• M2: 516,113 km (0.1 R)
• M3: 1,136,645 km (0.082 R)
• M4: 1,522,458 km (0.112 R)
• M5: 1,884,036 km (0.072 R)
• M6: 2,402,841 km (0.093 R)
• M7: 3,205,434 km (0.059 R)
• M8: 5,827,435 km (0.037 R)
• M9: 7,206,279 km (0.093 R)
• M10: 8,239,252 km (0.092 R)
• M11: 9,294,665 km (0.111 R)
• M12: 10,162,931 km (0.098 R)
• M13: 10,757,882 km (0.041 R)
• M14: 11,715,009 km (0.12 R)
• M15: 13,655,144 km (0.085 R)
• M16: 14,428,864 km (0.064 R)
• M17: 16,063,819 km (0.053 R)
• M18: 16,816,745 km (0.105 R)
• M19: 17,932,746 km (0.088 R)
• M20: 18,742,818 km (0.086 R)
• M21: 19,097,365 km (0.108 R)
• M22: 21,319,791 km (0.076 R)

Asteroid Belt

Center: 3 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862.5

Radius: 12.7

Gravity: 5.35 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 2.74 AU - 4.18 AU

Year: 4156 Days

Day: 14.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 38,707,608 km

• M1: 159,023 km (0.061 R)
• M2: 569,220 km (0.114 R)
• M3: 1,540,409 km (0.056 R)
• M4: 1,992,494 km (0.073 R)
• M5: 2,893,821 km (0.12 R)
• M6: 3,571,799 km (0.058 R)
• M7: 4,425,554 km (0.049 R)
• M8: 7,122,803 km (0.092 R)
• M9: 7,743,036 km (0.108 R)
• M10: 8,740,854 km (0.08 R)
• M11: 9,291,075 km (0.109 R)
• M12: 10,032,332 km (0.082 R)
• M13: 10,635,810 km (0.099 R)
• M14: 12,348,107 km (0.112 R)
• M15: 12,890,849 km (0.11 R)
• M16: 13,501,208 km (0.063 R)
• M17: 15,962,990 km (0.09 R)
• M18: 17,026,930 km (0.103 R)
• M19: 18,839,458 km (0.082 R)
• M20: 21,055,003 km (0.115 R)
• M21: 22,406,619 km (0.095 R)
• M22: 23,890,930 km (0.109 R)
• M23: 26,401,032 km (0.065 R)
• M24: 27,971,810 km (0.034 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 713.4

Radius: 13.5

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 4.65 AU - 5.25 AU

Year: 7111 Days

Day: 12.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 38,707,608 km

• M1: 169,345 km (0.112 R)
• M2: 799,451 km (0.091 R)
• M3: 1,372,411 km (0.102 R)
• M4: 2,634,419 km (0.108 R)
• M5: 3,274,997 km (0.082 R)
• M6: 4,246,336 km (0.113 R)
• M7: 4,870,607 km (0.11 R)
• M8: 7,923,302 km (0.061 R)
• M9: 9,264,447 km (0.108 R)
• M10: 10,318,214 km (0.101 R)
• M11: 11,552,845 km (0.101 R)
• M12: 12,073,446 km (0.113 R)
• M13: 15,284,115 km (0.042 R)
• M14: 20,498,199 km (0.12 R)
• M15: 36,552,295 km (0.115 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 12,226 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit