🌌 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: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.5 AU - 0.54 AU

Year: 238 Days

Day: 19.8 Hours

Environment

Temp: -116 °C

Axial Tilt: 25 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.6

Radius: 11.1

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.77 AU - 0.87 AU

Year: 472 Days

Day: 8.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,068,885 km

• M1: 138,079 km (0.049 R)
• M2: 499,507 km (0.066 R)
• M3: 1,181,524 km (0.095 R)
• M4: 1,586,785 km (0.11 R)
• M5: 2,019,721 km (0.114 R)
• M6: 2,381,897 km (0.082 R)
• M7: 3,105,801 km (0.031 R)
• M8: 3,580,326 km (0.044 R)
• M9: 4,196,968 km (0.084 R)
• M10: 4,574,254 km (0.098 R)
• M11: 5,253,578 km (0.062 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 614.5

Radius: 12.3

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.83 AU - 0.87 AU

Year: 498 Days

Day: 5.6 Hours

Environment

Temp: -145 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,068,885 km

• M1: 153,039 km (0.087 R)
• M2: 592,557 km (0.086 R)
• M3: 1,011,581 km (0.098 R)
• M4: 1,452,296 km (0.102 R)
• M5: 1,924,577 km (0.077 R)
• M6: 2,310,988 km (0.066 R)
• M7: 2,897,711 km (0.041 R)
• M8: 3,507,771 km (0.092 R)
• M9: 3,996,657 km (0.111 R)
• M10: 4,531,020 km (0.117 R)
• M11: 5,421,876 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852.5

Radius: 13.8

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.08 AU - 1.72 AU

Year: 1053 Days

Day: 5.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 57,068,885 km

• M1: 171,589 km (0.104 R)
• M2: 686,953 km (0.107 R)
• M3: 1,136,495 km (0.086 R)
• M4: 1,621,791 km (0.046 R)
• M5: 2,302,610 km (0.105 R)
• M6: 2,780,725 km (0.119 R)
• M7: 3,211,118 km (0.119 R)
• M8: 3,828,359 km (0.101 R)
• M9: 4,761,700 km (0.116 R)
• M10: 5,444,166 km (0.043 R)
• M11: 5,906,124 km (0.036 R)
• M12: 6,742,376 km (0.053 R)
• M13: 7,376,372 km (0.114 R)
• M14: 8,401,566 km (0.027 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568

Radius: 12.5

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.21 AU - 1.99 AU

Year: 1287 Days

Day: 6.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 44.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,068,885 km

• M1: 155,582 km (0.063 R)
• M2: 555,008 km (0.095 R)
• M3: 1,049,429 km (0.092 R)
• M4: 1,463,217 km (0.095 R)
• M5: 2,230,355 km (0.047 R)
• M6: 3,027,263 km (0.116 R)
• M7: 4,632,896 km (0.027 R)
• M8: 6,582,755 km (0.058 R)
• M9: 7,483,484 km (0.115 R)
• M10: 8,687,747 km (0.058 R)
• M11: 9,589,672 km (0.093 R)
• M12: 10,425,326 km (0.106 R)
• M13: 11,041,968 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 552.8

Radius: 12.9

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.88 AU - 2.64 AU

Year: 2160 Days

Day: 14.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,068,885 km

• M1: 160,369 km (0.096 R)
• M2: 625,170 km (0.092 R)
• M3: 1,515,426 km (0.113 R)
• M4: 2,998,989 km (0.046 R)
• M5: 3,717,806 km (0.091 R)
• M6: 6,605,943 km (0.116 R)
• M7: 8,273,809 km (0.08 R)
• M8: 9,059,497 km (0.094 R)
• M9: 10,743,371 km (0.081 R)
• M10: 12,708,638 km (0.096 R)
• M11: 13,120,481 km (0.089 R)
• M12: 13,669,206 km (0.084 R)
• M13: 14,812,583 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 624.3

Radius: 5

Gravity: 24.97 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 4.82 AU - 7.66 AU

Year: 9911 Days

Day: 19.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,068,885 km

• M1: 62,233 km (0.074 R)
• M2: 277,055 km (0.12 R)
• M3: 553,363 km (0.053 R)
• M4: 800,498 km (0.113 R)
• M5: 1,175,690 km (0.112 R)
• M6: 1,476,830 km (0.119 R)
• M7: 1,989,801 km (0.061 R)
• M8: 2,437,099 km (0.069 R)
• M9: 2,862,406 km (0.079 R)
• M10: 4,238,257 km (0.119 R)
• M11: 4,465,347 km (0.092 R)
• M12: 4,975,326 km (0.11 R)
• M13: 6,327,092 km (0.099 R)
• M14: 7,206,279 km (0.119 R)
• M15: 7,821,725 km (0.087 R)
• M16: 7,991,668 km (0.118 R)
• M17: 8,650,946 km (0.077 R)
• M18: 10,898,354 km (0.093 R)
• M19: 12,269,718 km (0.06 R)
• M20: 13,205,303 km (0.034 R)
• M21: 20,474,264 km (0.081 R)
• M22: 23,949,572 km (0.072 R)
• M23: 26,536,568 km (0.06 R)
• M24: 27,700,140 km (0.101 R)
• M25: 29,508,629 km (0.074 R)
• M26: 31,074,619 km (0.1 R)
• M27: 36,103,651 km (0.081 R)
• M28: 37,772,266 km (0.101 R)
• M29: 40,118,259 km (0.092 R)
• M30: 41,262,533 km (0.116 R)
• M31: 43,749,748 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 799

Radius: 5

Gravity: 31.96 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 5.5 AU - 8.7 AU

Year: 12029 Days

Day: 16.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 57,068,885 km

• M1: 63,429 km (0.082 R)
• M2: 685,906 km (0.065 R)
• M3: 996,322 km (0.037 R)
• M4: 1,663,828 km (0.097 R)
• M5: 1,827,039 km (0.115 R)
• M6: 2,001,171 km (0.082 R)
• M7: 2,591,035 km (0.027 R)
• M8: 3,340,820 km (0.088 R)
• M9: 3,522,431 km (0.096 R)
• M10: 4,438,270 km (0.099 R)
• M11: 4,754,520 km (0.099 R)
• M12: 5,793,926 km (0.112 R)
• M13: 6,485,666 km (0.113 R)
• M14: 6,892,871 km (0.119 R)
• M15: 7,145,393 km (0.049 R)
• M16: 7,758,445 km (0.082 R)
• M17: 8,170,587 km (0.051 R)
• M18: 8,405,904 km (0.11 R)
• M19: 9,290,327 km (0.106 R)
• M20: 10,787,054 km (0.091 R)
• M21: 11,300,324 km (0.069 R)
• M22: 16,751,222 km (0.077 R)
• M23: 17,131,051 km (0.095 R)
• M24: 17,361,730 km (0.064 R)
• M25: 21,966,503 km (0.103 R)
• M26: 26,290,928 km (0.089 R)
• M27: 31,264,459 km (0.094 R)
• M28: 37,730,827 km (0.066 R)
• M29: 38,383,373 km (0.036 R)
• M30: 40,114,819 km (0.06 R)
• M31: 43,589,828 km (0.12 R)
• M32: 44,888,337 km (0.04 R)
• M33: 51,609,470 km (0.1 R)
• M34: 52,090,727 km (0.059 R)
• M35: 55,880,041 km (0.091 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 224 - 19,038 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit