🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.57 AU - 0.65 AU

Year: 308 Days

Day: 29.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 7.5 °

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: 3.42

Radius: 1.64

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.57 AU - 0.73 AU

Year: 338 Days

Day: 38.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.9

Radius: 8.3

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.05 AU - 1.17 AU

Year: 755 Days

Day: 8.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,950,291 km

• M1: 103,821 km (0.086 R)
• M2: 935,286 km (0.096 R)
• M3: 1,617,901 km (0.119 R)
• M4: 1,990,998 km (0.12 R)
• M5: 2,794,638 km (0.087 R)
• M6: 3,123,304 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.9

Radius: 10.9

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 2.25 AU - 3.09 AU

Year: 2817 Days

Day: 8.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 112 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,950,291 km

• M1: 136,583 km (0.092 R)
• M2: 497,114 km (0.087 R)
• M3: 853,007 km (0.077 R)
• M4: 2,399,699 km (0.096 R)
• M5: 3,778,693 km (0.043 R)
• M6: 4,126,508 km (0.068 R)
• M7: 4,476,716 km (0.072 R)
• M8: 5,473,487 km (0.099 R)
• M9: 8,982,604 km (0.054 R)
• M10: 9,574,264 km (0.119 R)
• M11: 10,663,635 km (0.048 R)
• M12: 11,114,673 km (0.098 R)
• M13: 12,660,019 km (0.098 R)
• M14: 13,009,031 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.7

Radius: 12.1

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 3.01 AU - 4.03 AU

Year: 4264 Days

Day: 6.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 53,950,291 km

• M1: 150,944 km (0.115 R)
• M2: 555,158 km (0.092 R)
• M3: 1,168,359 km (0.044 R)
• M4: 1,549,236 km (0.111 R)
• M5: 2,110,676 km (0.062 R)
• M6: 2,873,925 km (0.08 R)
• M7: 3,729,475 km (0.113 R)
• M8: 4,412,688 km (0.036 R)
• M9: 4,946,902 km (0.11 R)
• M10: 5,578,505 km (0.105 R)
• M11: 6,233,893 km (0.104 R)
• M12: 6,626,438 km (0.075 R)
• M13: 7,528,962 km (0.091 R)
• M14: 8,222,348 km (0.084 R)
• M15: 9,303,043 km (0.116 R)
• M16: 10,688,020 km (0.079 R)
• M17: 12,441,008 km (0.064 R)
• M18: 14,067,885 km (0.058 R)
• M19: 16,224,787 km (0.094 R)
• M20: 18,593,819 km (0.097 R)
• M21: 19,411,072 km (0.038 R)
• M22: 22,426,067 km (0.049 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122.8

Radius: 10.9

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 4.56 AU - 6.24 AU

Year: 8102 Days

Day: 5.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 61.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,950,291 km

• M1: 171,140 km (0.071 R)
• M2: 536,608 km (0.108 R)
• M3: 1,086,230 km (0.106 R)
• M4: 1,574,817 km (0.092 R)
• M5: 2,138,502 km (0.073 R)
• M6: 2,968,022 km (0.051 R)
• M7: 3,400,360 km (0.116 R)
• M8: 4,303,183 km (0.03 R)
• M9: 5,205,258 km (0.106 R)
• M10: 7,641,908 km (0.08 R)
• M11: 8,423,707 km (0.117 R)
• M12: 9,484,505 km (0.108 R)
• M13: 9,948,707 km (0.119 R)
• M14: 14,027,044 km (0.04 R)
• M15: 17,734,379 km (0.116 R)
• M16: 18,380,342 km (0.082 R)
• M17: 20,221,892 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 256.7

Radius: 7

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 7.7 AU - 11.7 AU

Year: 19506 Days

Day: 23.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 53,950,291 km

• M1: 87,066 km (0.035 R)
• M2: 380,727 km (0.071 R)
• M3: 600,336 km (0.049 R)
• M4: 841,039 km (0.099 R)
• M5: 1,256,772 km (0.104 R)
• M6: 1,645,577 km (0.101 R)
• M7: 2,558,423 km (0.081 R)
• M8: 3,184,789 km (0.115 R)
• M9: 7,925,845 km (0.103 R)
• M10: 8,999,808 km (0.097 R)
• M11: 11,205,778 km (0.119 R)
• M12: 13,174,187 km (0.079 R)
• M13: 14,075,065 km (0.105 R)
• M14: 14,947,670 km (0.106 R)
• M15: 15,292,642 km (0.038 R)
• M16: 18,800,712 km (0.063 R)
• M17: 21,649,355 km (0.085 R)
• M18: 23,918,904 km (0.104 R)
• M19: 31,784,461 km (0.05 R)
• M20: 32,585,558 km (0.113 R)
• M21: 34,347,073 km (0.109 R)
• M22: 36,171,269 km (0.114 R)
• M23: 39,353,365 km (0.084 R)
• M24: 41,893,089 km (0.098 R)
• M25: 42,166,703 km (0.107 R)
• M26: 44,256,286 km (0.104 R)
• M27: 47,148,611 km (0.117 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: 472 - 11,348 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit