🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.41 AU - 0.63 AU

Year: 238 Days

Day: 38.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 63.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.76

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.56 AU - 0.72 AU

Year: 326 Days

Day: 44.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 3.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.4

Radius: 15

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.78 AU - 1.18 AU

Year: 617 Days

Day: 14.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 81,090,328 km

• M1: 186,997 km (0.087 R)
• M2: 735,124 km (0.056 R)
• M3: 1,248,993 km (0.099 R)
• M4: 1,944,024 km (0.116 R)
• M5: 2,427,674 km (0.081 R)
• M6: 3,015,594 km (0.089 R)
• M7: 3,847,059 km (0.117 R)
• M8: 4,467,890 km (0.111 R)
• M9: 5,038,755 km (0.051 R)
• M10: 5,587,032 km (0.029 R)
• M11: 6,155,952 km (0.066 R)
• M12: 6,642,893 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.7

Radius: 12.9

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.57 AU - 1.65 AU

Year: 1299 Days

Day: 9.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,090,328 km

• M1: 160,668 km (0.103 R)
• M2: 740,061 km (0.1 R)
• M3: 1,240,765 km (0.049 R)
• M4: 1,643,183 km (0.065 R)
• M5: 2,107,984 km (0.084 R)
• M6: 2,967,423 km (0.081 R)
• M7: 3,640,015 km (0.083 R)
• M8: 4,457,269 km (0.097 R)
• M9: 5,040,401 km (0.065 R)
• M10: 6,150,417 km (0.065 R)
• M11: 6,673,561 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.9

Radius: 13.6

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.51 AU - 1.85 AU

Year: 1385 Days

Day: 5.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 81,090,328 km

• M1: 169,195 km (0.088 R)
• M2: 683,213 km (0.045 R)
• M3: 1,127,220 km (0.07 R)
• M4: 1,909,318 km (0.061 R)
• M5: 2,459,987 km (0.057 R)
• M6: 3,440,452 km (0.087 R)
• M7: 3,920,063 km (0.107 R)
• M8: 4,705,003 km (0.117 R)
• M9: 5,155,591 km (0.026 R)
• M10: 5,765,053 km (0.115 R)
• M11: 6,660,396 km (0.106 R)
• M12: 7,593,588 km (0.108 R)
• M13: 9,534,171 km (0.116 R)
• M14: 10,389,871 km (0.082 R)
• M15: 11,056,180 km (0.055 R)
• M16: 11,715,458 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.8

Radius: 12.4

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.04 AU - 2.28 AU

Year: 2018 Days

Day: 14.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 81,090,328 km

• M1: 154,235 km (0.101 R)
• M2: 566,228 km (0.095 R)
• M3: 1,396,646 km (0.049 R)
• M4: 2,162,736 km (0.073 R)
• M5: 2,774,592 km (0.095 R)
• M6: 3,567,012 km (0.114 R)
• M7: 4,665,958 km (0.071 R)
• M8: 5,173,094 km (0.104 R)
• M9: 5,930,508 km (0.099 R)
• M10: 7,135,370 km (0.104 R)
• M11: 8,713,926 km (0.07 R)
• M12: 11,539,681 km (0.084 R)
• M13: 12,154,977 km (0.119 R)
• M14: 13,036,706 km (0.1 R)
• M15: 13,831,969 km (0.117 R)
• M16: 15,198,844 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 912.5

Radius: 10.8

Gravity: 7.82 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.66 AU - 4.02 AU

Year: 3881 Days

Day: 8 Hours

Environment

Temp: -216 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 81,090,328 km

• M1: 134,339 km (0.092 R)
• M2: 506,090 km (0.102 R)
• M3: 926,759 km (0.11 R)
• M4: 1,362,687 km (0.086 R)
• M5: 2,073,277 km (0.09 R)
• M6: 2,513,244 km (0.087 R)
• M7: 3,300,727 km (0.109 R)
• M8: 3,971,225 km (0.112 R)
• M9: 4,315,599 km (0.067 R)
• M10: 4,705,152 km (0.117 R)
• M11: 5,360,989 km (0.075 R)
• M12: 6,017,126 km (0.073 R)
• M13: 6,694,056 km (0.089 R)
• M14: 7,285,117 km (0.114 R)
• M15: 9,348,670 km (0.065 R)
• M16: 10,909,574 km (0.109 R)
• M17: 20,358,026 km (0.066 R)
• M18: 24,842,821 km (0.041 R)
• M19: 25,465,746 km (0.091 R)
• M20: 26,178,879 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.8

Radius: 13.8

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 3.35 AU - 3.91 AU

Year: 4397 Days

Day: 14.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 53.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 81,090,328 km

• M1: 171,888 km (0.073 R)
• M2: 687,701 km (0.054 R)
• M3: 1,496,428 km (0.09 R)
• M4: 2,180,688 km (0.114 R)
• M5: 3,953,423 km (0.052 R)
• M6: 5,300,851 km (0.078 R)
• M7: 5,753,983 km (0.091 R)
• M8: 6,577,968 km (0.118 R)
• M9: 8,087,859 km (0.113 R)
• M10: 8,768,081 km (0.09 R)
• M11: 9,202,513 km (0.111 R)
• M12: 11,688,979 km (0.067 R)
• M13: 13,577,353 km (0.072 R)
• M14: 14,870,328 km (0.067 R)
• M15: 16,961,706 km (0.09 R)
• M16: 18,718,882 km (0.097 R)
• M17: 19,508,011 km (0.049 R)
• M18: 21,649,505 km (0.045 R)
• M19: 22,154,098 km (0.107 R)
• M20: 23,111,824 km (0.11 R)
• M21: 24,405,696 km (0.058 R)
• M22: 25,908,406 km (0.06 R)
• M23: 27,220,978 km (0.111 R)
• M24: 27,978,542 km (0.081 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 576.2

Radius: 4.1

Gravity: 34.28 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 8.51 AU - 14 AU

Year: 23992 Days

Day: 19.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 81,090,328 km

• M1: 51,312 km (0.061 R)
• M2: 216,917 km (0.059 R)
• M3: 376,687 km (0.109 R)
• M4: 580,889 km (0.105 R)
• M5: 769,831 km (0.086 R)
• M6: 949,647 km (0.083 R)
• M7: 1,887,776 km (0.107 R)
• M8: 3,769,268 km (0.052 R)
• M9: 4,024,183 km (0.064 R)
• M10: 5,677,239 km (0.052 R)
• M11: 7,785,672 km (0.12 R)
• M12: 8,901,672 km (0.11 R)
• M13: 9,526,991 km (0.102 R)
• M14: 10,487,858 km (0.057 R)
• M15: 10,991,704 km (0.114 R)
• M16: 13,533,970 km (0.057 R)
• M17: 14,130,865 km (0.091 R)
• M18: 18,355,060 km (0.1 R)
• M19: 19,835,930 km (0.117 R)
• M20: 20,314,643 km (0.067 R)
• M21: 21,796,709 km (0.072 R)
• M22: 23,033,135 km (0.109 R)
• M23: 24,424,695 km (0.106 R)
• M24: 25,757,911 km (0.086 R)
• M25: 26,327,430 km (0.084 R)
• M26: 26,789,089 km (0.102 R)
• M27: 27,138,849 km (0.034 R)
• M28: 29,425,153 km (0.115 R)
• M29: 32,624,603 km (0.116 R)
• M30: 37,482,195 km (0.096 R)
• M31: 44,082,753 km (0.059 R)
• M32: 46,388,205 km (0.099 R)
• M33: 49,294,144 km (0.093 R)
• M34: 51,237,720 km (0.11 R)
• M35: 53,048,452 km (0.119 R)
• M36: 60,517,874 km (0.062 R)
• M37: 66,080,222 km (0.099 R)
• M38: 66,718,556 km (0.052 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 230 - 18,035 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit