🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.01

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.58 AU - 0.74 AU

Year: 341 Days

Day: 42.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 13 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 32,023,963 km

• M1: 339,438 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 486.2

Radius: 15

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.8 AU - 0.86 AU

Year: 481 Days

Day: 10.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 32,023,963 km

• M1: 186,549 km (0.115 R)
• M2: 681,418 km (0.111 R)
• M3: 1,385,127 km (0.043 R)
• M4: 1,852,919 km (0.077 R)
• M5: 2,366,040 km (0.119 R)
• M6: 2,933,465 km (0.112 R)
• M7: 3,848,854 km (0.099 R)
• M8: 4,669,548 km (0.033 R)
• M9: 5,363,383 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 710.2

Radius: 13.1

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.6 AU - 2.36 AU

Year: 1771 Days

Day: 6.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 32,023,963 km

• M1: 162,912 km (0.087 R)
• M2: 716,873 km (0.057 R)
• M3: 1,213,987 km (0.087 R)
• M4: 1,714,691 km (0.057 R)
• M5: 2,695,454 km (0.107 R)
• M6: 3,303,869 km (0.116 R)
• M7: 4,495,566 km (0.068 R)
• M8: 5,604,385 km (0.078 R)
• M9: 6,397,703 km (0.078 R)
• M10: 10,943,832 km (0.092 R)
• M11: 11,951,673 km (0.119 R)
• M12: 13,894,800 km (0.109 R)
• M13: 14,586,989 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.8

Radius: 8.6

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 2.13 AU - 3.01 AU

Year: 2620 Days

Day: 10 Hours

Environment

Temp: -190 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 32,023,963 km

• M1: 298,897 km (0.057 R)
• M2: 642,822 km (0.072 R)
• M3: 949,647 km (0.035 R)
• M4: 1,631,365 km (0.116 R)
• M5: 1,969,007 km (0.115 R)
• M6: 3,188,230 km (0.091 R)
• M7: 4,167,647 km (0.073 R)
• M8: 4,499,455 km (0.115 R)
• M9: 5,627,274 km (0.066 R)
• M10: 7,672,725 km (0.094 R)
• M11: 8,929,497 km (0.097 R)
• M12: 13,031,321 km (0.088 R)
• M13: 13,834,362 km (0.057 R)
• M14: 14,481,223 km (0.111 R)
• M15: 15,342,608 km (0.059 R)
• M16: 16,646,353 km (0.118 R)
• M17: 18,516,028 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329.6

Radius: 8.5

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 3.14 AU - 4.84 AU

Year: 5067 Days

Day: 14 Hours

Environment

Temp: -204 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 32,023,963 km

• M1: 108,159 km (0.062 R)
• M2: 394,938 km (0.116 R)
• M3: 820,694 km (0.109 R)
• M4: 1,369,120 km (0.059 R)
• M5: 1,854,116 km (0.067 R)
• M6: 2,158,099 km (0.094 R)
• M7: 2,971,014 km (0.118 R)
• M8: 3,765,827 km (0.12 R)
• M9: 4,213,125 km (0.077 R)
• M10: 5,087,225 km (0.114 R)
• M11: 7,001,330 km (0.116 R)
• M12: 8,576,745 km (0.045 R)
• M13: 10,213,495 km (0.105 R)
• M14: 10,498,330 km (0.116 R)
• M15: 11,869,095 km (0.08 R)
• M16: 12,597,337 km (0.104 R)
• M17: 12,878,133 km (0.099 R)
• M18: 13,403,520 km (0.069 R)
• M19: 17,548,728 km (0.099 R)
• M20: 19,162,440 km (0.067 R)
• M21: 20,355,782 km (0.067 R)
• M22: 21,464,751 km (0.119 R)
• M23: 22,135,698 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 172.5

Radius: 13.7

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 4.91 AU - 5.85 AU

Year: 7934 Days

Day: 9.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 32,023,963 km

• M1: 170,392 km (0.109 R)
• M2: 712,235 km (0.052 R)
• M3: 1,423,573 km (0.061 R)
• M4: 2,079,710 km (0.102 R)
• M5: 2,582,059 km (0.113 R)
• M6: 3,183,891 km (0.087 R)
• M7: 5,121,184 km (0.109 R)
• M8: 6,492,548 km (0.075 R)
• M9: 7,886,949 km (0.083 R)
• M10: 9,551,076 km (0.038 R)
• M11: 13,614,453 km (0.058 R)
• M12: 15,941,598 km (0.064 R)
• M13: 16,505,432 km (0.087 R)
• M14: 16,966,194 km (0.119 R)
• M15: 18,522,909 km (0.103 R)
• M16: 22,546,643 km (0.058 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 609.8

Radius: 6.3

Gravity: 15.36 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 5.98 AU - 7.48 AU

Year: 11101 Days

Day: 18.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 32,023,963 km

• M1: 79,885 km (0.065 R)
• M2: 296,054 km (0.101 R)
• M3: 582,684 km (0.099 R)
• M4: 1,007,242 km (0.03 R)
• M5: 2,176,499 km (0.095 R)
• M6: 2,578,469 km (0.117 R)
• M7: 5,268,388 km (0.116 R)
• M8: 5,814,271 km (0.092 R)
• M9: 6,664,136 km (0.102 R)
• M10: 7,980,598 km (0.106 R)
• M11: 9,267,139 km (0.081 R)
• M12: 13,758,516 km (0.107 R)
• M13: 15,461,239 km (0.079 R)
• M14: 16,012,208 km (0.04 R)
• M15: 16,433,924 km (0.103 R)
• M16: 18,809,389 km (0.103 R)
• M17: 19,756,344 km (0.07 R)
• M18: 19,997,944 km (0.095 R)
• M19: 21,659,378 km (0.079 R)
• M20: 25,254,365 km (0.065 R)
• M21: 28,916,371 km (0.109 R)
• M22: 31,144,631 km (0.055 R)
• M23: 31,472,101 km (0.053 R)
• M24: 37,272,309 km (0.088 R)
• M25: 42,797,856 km (0.027 R)
• M26: 45,125,001 km (0.109 R)
• M27: 45,684,647 km (0.093 R)
• M28: 46,532,567 km (0.1 R)
• M29: 47,391,109 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 164.3

Radius: 6.9

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 5.9 AU - 7.6 AU

Year: 11150 Days

Day: 20.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,023,963 km

• M1: 87,365 km (0.04 R)
• M2: 474,375 km (0.113 R)
• M3: 794,514 km (0.107 R)
• M4: 1,162,076 km (0.066 R)
• M5: 1,431,801 km (0.086 R)
• M6: 1,677,441 km (0.069 R)
• M7: 2,039,169 km (0.115 R)
• M8: 2,303,209 km (0.042 R)
• M9: 3,154,122 km (0.062 R)
• M10: 7,193,414 km (0.082 R)
• M11: 7,920,758 km (0.078 R)
• M12: 9,908,316 km (0.103 R)
• M13: 10,761,323 km (0.113 R)
• M14: 12,975,521 km (0.093 R)
• M15: 13,940,577 km (0.093 R)
• M16: 14,384,434 km (0.075 R)
• M17: 17,311,765 km (0.071 R)
• M18: 18,948,216 km (0.049 R)
• M19: 21,702,761 km (0.113 R)
• M20: 28,965,289 km (0.099 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 469 - 17,359 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit