🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.63 AU - 0.71 AU

Year: 360 Days

Day: 18 Hours

Environment

Temp: -144 °C

Axial Tilt: 45.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.5

Radius: 12.7

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.64 AU - 0.8 AU

Year: 401 Days

Day: 10.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,672,940 km

• M1: 158,275 km (0.116 R)
• M2: 662,569 km (0.027 R)
• M3: 1,058,704 km (0.111 R)
• M4: 1,602,193 km (0.116 R)
• M5: 2,085,694 km (0.069 R)
• M6: 2,694,706 km (0.106 R)
• M7: 3,787,668 km (0.108 R)
• M8: 4,220,306 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 697.9

Radius: 12.7

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.29 AU - 1.61 AU

Year: 1145 Days

Day: 13.6 Hours

Environment

Temp: -168 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 50,672,940 km

• M1: 160,070 km (0.116 R)
• M2: 744,848 km (0.112 R)
• M3: 1,159,832 km (0.12 R)
• M4: 1,560,156 km (0.11 R)
• M5: 2,075,670 km (0.119 R)
• M6: 2,497,088 km (0.07 R)
• M7: 2,949,621 km (0.101 R)
• M8: 3,383,006 km (0.097 R)
• M9: 4,005,633 km (0.045 R)
• M10: 4,833,806 km (0.084 R)
• M11: 5,460,921 km (0.08 R)
• M12: 5,923,028 km (0.09 R)
• M13: 6,525,758 km (0.119 R)
• M14: 6,926,082 km (0.12 R)
• M15: 7,933,474 km (0.104 R)
• M16: 10,238,478 km (0.101 R)
• M17: 10,780,771 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.2

Radius: 11.8

Gravity: 5.37 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 3.47 AU - 5.78 AU

Year: 6514 Days

Day: 13.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 50,672,940 km

• M1: 146,756 km (0.116 R)
• M2: 752,178 km (0.063 R)
• M3: 1,134,401 km (0.082 R)
• M4: 1,560,904 km (0.114 R)
• M5: 2,511,449 km (0.096 R)
• M6: 4,849,065 km (0.08 R)
• M7: 6,095,066 km (0.07 R)
• M8: 9,124,273 km (0.106 R)
• M9: 13,315,407 km (0.063 R)
• M10: 14,053,074 km (0.119 R)
• M11: 15,922,449 km (0.082 R)
• M12: 20,296,392 km (0.107 R)
• M13: 20,894,185 km (0.088 R)
• M14: 25,844,977 km (0.045 R)
• M15: 27,624,892 km (0.106 R)
• M16: 32,836,882 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 303.9

Radius: 12.2

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 3.89 AU - 6.31 AU

Year: 7556 Days

Day: 9.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 50,672,940 km

• M1: 153,039 km (0.107 R)
• M2: 590,014 km (0.119 R)
• M3: 1,059,452 km (0.094 R)
• M4: 2,216,292 km (0.073 R)
• M5: 3,789,464 km (0.084 R)
• M6: 4,468,339 km (0.069 R)
• M7: 5,036,362 km (0.057 R)
• M8: 5,450,898 km (0.117 R)
• M9: 6,734,896 km (0.039 R)
• M10: 7,483,334 km (0.113 R)
• M11: 9,431,847 km (0.115 R)
• M12: 10,325,245 km (0.116 R)
• M13: 11,986,978 km (0.047 R)
• M14: 16,247,376 km (0.072 R)
• M15: 18,293,127 km (0.116 R)
• M16: 20,021,880 km (0.118 R)
• M17: 26,433,495 km (0.113 R)
• M18: 26,931,955 km (0.086 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 188.7

Radius: 6.9

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 5.91 AU - 6.99 AU

Year: 10746 Days

Day: 15.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 50,672,940 km

• M1: 87,216 km (0.051 R)
• M2: 608,115 km (0.096 R)
• M3: 984,653 km (0.105 R)
• M4: 1,290,880 km (0.106 R)
• M5: 2,112,472 km (0.103 R)
• M6: 2,384,740 km (0.094 R)
• M7: 3,221,141 km (0.102 R)
• M8: 5,634,753 km (0.098 R)
• M9: 7,170,376 km (0.118 R)
• M10: 9,468,348 km (0.105 R)
• M11: 9,989,398 km (0.116 R)
• M12: 13,743,856 km (0.094 R)
• M13: 14,411,810 km (0.094 R)
• M14: 16,054,395 km (0.091 R)
• M15: 16,669,990 km (0.113 R)
• M16: 18,278,017 km (0.091 R)
• M17: 24,035,890 km (0.078 R)
• M18: 25,333,053 km (0.059 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 157.9

Radius: 5.7

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 9.21 AU - 11.99 AU

Year: 22640 Days

Day: 19.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 50,672,940 km

• M1: 70,909 km (0.077 R)
• M2: 386,112 km (0.083 R)
• M3: 1,520,812 km (0.116 R)
• M4: 2,095,118 km (0.111 R)
• M5: 2,696,950 km (0.104 R)
• M6: 2,891,577 km (0.093 R)
• M7: 3,095,629 km (0.07 R)
• M8: 4,529,973 km (0.111 R)
• M9: 5,028,433 km (0.036 R)
• M10: 7,561,873 km (0.111 R)
• M11: 8,217,261 km (0.102 R)
• M12: 10,305,797 km (0.094 R)
• M13: 11,000,979 km (0.113 R)
• M14: 12,072,548 km (0.092 R)
• M15: 14,884,839 km (0.109 R)
• M16: 15,564,312 km (0.049 R)
• M17: 18,029,236 km (0.101 R)
• M18: 20,245,379 km (0.114 R)
• M19: 22,547,989 km (0.106 R)
• M20: 28,381,558 km (0.112 R)
• M21: 30,710,199 km (0.109 R)
• M22: 31,256,680 km (0.077 R)
• M23: 33,163,155 km (0.097 R)
• M24: 34,908,663 km (0.093 R)
• M25: 37,453,772 km (0.104 R)
• M26: 40,904,396 km (0.083 R)
• M27: 42,910,055 km (0.097 R)
• M28: 44,283,064 km (0.12 R)
• M29: 50,672,988 km (0.119 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: 276 - 18,005 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit