🌌 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: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.46 AU - 0.62 AU

Year: 256 Days

Day: 38.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 67,191,639 km

• M1: 47,123 km (0.102 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.4

Radius: 12.2

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.79 AU - 1.09 AU

Year: 588 Days

Day: 10.1 Hours

Environment

Temp: -155 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 67,191,639 km

• M1: 151,692 km (0.111 R)
• M2: 533,616 km (0.113 R)
• M3: 924,964 km (0.112 R)
• M4: 1,325,886 km (0.09 R)
• M5: 1,765,853 km (0.088 R)
• M6: 2,155,107 km (0.057 R)
• M7: 2,623,348 km (0.114 R)
• M8: 3,973,170 km (0.093 R)
• M9: 4,498,258 km (0.049 R)
• M10: 5,494,131 km (0.042 R)
• M11: 6,434,803 km (0.104 R)
• M12: 6,954,356 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 376.8

Radius: 14.6

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.2 AU - 1.44 AU

Year: 979 Days

Day: 9.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,191,639 km

• M1: 181,612 km (0.117 R)
• M2: 764,894 km (0.098 R)
• M3: 2,043,357 km (0.076 R)
• M4: 2,714,154 km (0.095 R)
• M5: 3,570,153 km (0.105 R)
• M6: 4,376,187 km (0.118 R)
• M7: 4,967,696 km (0.091 R)
• M8: 5,500,863 km (0.054 R)
• M9: 6,251,545 km (0.092 R)
• M10: 8,029,516 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.1

Radius: 10.7

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.43 AU - 1.59 AU

Year: 1198 Days

Day: 13.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 93.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 67,191,639 km

• M1: 133,142 km (0.093 R)
• M2: 474,076 km (0.079 R)
• M3: 1,806,095 km (0.072 R)
• M4: 2,185,475 km (0.054 R)
• M5: 3,119,864 km (0.043 R)
• M6: 3,550,855 km (0.059 R)
• M7: 3,892,836 km (0.085 R)
• M8: 6,613,572 km (0.114 R)
• M9: 7,198,650 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 920

Radius: 12.1

Gravity: 6.28 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.61 AU - 1.79 AU

Year: 1431 Days

Day: 13.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 67,191,639 km

• M1: 150,645 km (0.096 R)
• M2: 615,296 km (0.119 R)
• M3: 1,032,973 km (0.094 R)
• M4: 2,318,617 km (0.111 R)
• M5: 3,448,829 km (0.107 R)
• M6: 3,886,553 km (0.058 R)
• M7: 4,476,417 km (0.06 R)
• M8: 6,023,857 km (0.089 R)
• M9: 6,411,466 km (0.085 R)
• M10: 7,318,178 km (0.048 R)
• M11: 7,930,632 km (0.105 R)
• M12: 8,728,737 km (0.109 R)
• M13: 9,353,906 km (0.075 R)
• M14: 10,623,992 km (0.091 R)
• M15: 11,119,909 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.2

Radius: 14.2

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 3.66 AU - 4.12 AU

Year: 4954 Days

Day: 6.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 67,191,639 km

• M1: 176,675 km (0.104 R)
• M2: 845,826 km (0.092 R)
• M3: 1,408,464 km (0.094 R)
• M4: 2,473,302 km (0.117 R)
• M5: 2,983,730 km (0.094 R)
• M6: 4,131,893 km (0.082 R)
• M7: 5,057,904 km (0.103 R)
• M8: 6,716,645 km (0.116 R)
• M9: 7,688,134 km (0.101 R)
• M10: 10,031,584 km (0.06 R)
• M11: 14,363,191 km (0.102 R)
• M12: 15,315,680 km (0.058 R)
• M13: 16,880,624 km (0.056 R)
• M14: 18,062,148 km (0.108 R)
• M15: 20,326,760 km (0.034 R)
• M16: 22,704,469 km (0.04 R)
• M17: 23,201,283 km (0.083 R)
• M18: 23,996,845 km (0.091 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.8

Radius: 13.9

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 3.93 AU - 4.59 AU

Year: 5677 Days

Day: 9.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,191,639 km

• M1: 172,935 km (0.117 R)
• M2: 990,488 km (0.055 R)
• M3: 3,232,062 km (0.113 R)
• M4: 3,840,028 km (0.095 R)
• M5: 4,648,604 km (0.093 R)
• M6: 5,333,314 km (0.103 R)
• M7: 6,367,484 km (0.075 R)
• M8: 7,678,859 km (0.073 R)
• M9: 8,414,731 km (0.089 R)
• M10: 9,063,387 km (0.112 R)
• M11: 12,446,094 km (0.081 R)
• M12: 14,625,286 km (0.108 R)
• M13: 15,231,307 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 134

Radius: 7

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 7.11 AU - 7.77 AU

Year: 13103 Days

Day: 18 Hours

Environment

Temp: -234 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 67,191,639 km

• M1: 87,814 km (0.088 R)
• M2: 403,615 km (0.093 R)
• M3: 1,336,358 km (0.088 R)
• M4: 1,770,341 km (0.089 R)
• M5: 4,216,117 km (0.098 R)
• M6: 4,443,655 km (0.088 R)
• M7: 7,741,839 km (0.074 R)
• M8: 8,436,123 km (0.108 R)
• M9: 9,297,807 km (0.106 R)
• M10: 11,099,115 km (0.066 R)
• M11: 14,502,915 km (0.084 R)
• M12: 17,747,693 km (0.118 R)
• M13: 20,712,274 km (0.116 R)
• M14: 23,043,757 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 972.3

Radius: 3.5

Gravity: 79.37 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 7.38 AU - 8.12 AU

Year: 13931 Days

Day: 23.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 67,191,639 km

• M1: 44,879 km (0.069 R)
• M2: 177,872 km (0.098 R)
• M3: 385,215 km (0.094 R)
• M4: 511,475 km (0.042 R)
• M5: 639,082 km (0.081 R)
• M6: 1,856,510 km (0.078 R)
• M7: 2,223,324 km (0.081 R)
• M8: 2,729,563 km (0.058 R)
• M9: 3,362,661 km (0.078 R)
• M10: 3,641,511 km (0.105 R)
• M11: 3,786,621 km (0.074 R)
• M12: 4,088,211 km (0.116 R)
• M13: 4,877,639 km (0.043 R)
• M14: 5,198,227 km (0.109 R)
• M15: 6,081,153 km (0.1 R)
• M16: 10,325,993 km (0.104 R)
• M17: 11,460,842 km (0.09 R)
• M18: 15,586,602 km (0.116 R)
• M19: 17,074,652 km (0.114 R)
• M20: 21,720,863 km (0.113 R)
• M21: 28,941,952 km (0.031 R)
• M22: 30,341,889 km (0.118 R)
• M23: 31,664,334 km (0.105 R)
• M24: 33,910,247 km (0.119 R)
• M25: 35,728,759 km (0.04 R)
• M26: 37,202,447 km (0.081 R)
• M27: 38,161,070 km (0.073 R)
• M28: 40,990,415 km (0.11 R)
• M29: 43,052,173 km (0.09 R)
• M30: 43,653,706 km (0.11 R)
• M31: 46,587,470 km (0.03 R)
• M32: 47,861,146 km (0.085 R)
• M33: 54,054,647 km (0.106 R)
• M34: 56,710,458 km (0.114 R)
• M35: 57,251,853 km (0.068 R)
• M36: 60,385,031 km (0.098 R)
• M37: 61,517,487 km (0.088 R)
• M38: 62,664,154 km (0.118 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 166 - 11,297 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit