🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.73

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.58 AU - 0.64 AU

Year: 313 Days

Day: 21.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.62 AU - 0.72 AU

Year: 360 Days

Day: 12.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,555,493 km

• M1: 94,546 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.7

Radius: 12.3

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.87 AU - 1.21 AU

Year: 696 Days

Day: 11.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,555,493 km

• M1: 153,487 km (0.087 R)
• M2: 548,276 km (0.087 R)
• M3: 972,386 km (0.086 R)
• M4: 1,358,199 km (0.081 R)
• M5: 1,919,789 km (0.093 R)
• M6: 2,689,919 km (0.119 R)
• M7: 3,544,871 km (0.093 R)
• M8: 4,589,513 km (0.073 R)
• M9: 5,103,531 km (0.115 R)
• M10: 5,771,037 km (0.074 R)
• M11: 6,729,361 km (0.106 R)
• M12: 7,168,132 km (0.108 R)
• M13: 7,602,564 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305.9

Radius: 14.1

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.07 AU - 1.59 AU

Year: 1006 Days

Day: 14.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,555,493 km

• M1: 175,478 km (0.088 R)
• M2: 1,021,903 km (0.078 R)
• M3: 1,648,868 km (0.101 R)
• M4: 2,601,657 km (0.033 R)
• M5: 3,141,256 km (0.117 R)
• M6: 4,340,283 km (0.113 R)
• M7: 4,818,547 km (0.05 R)
• M8: 5,958,483 km (0.104 R)
• M9: 7,925,994 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.4

Radius: 11.2

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.35 AU - 1.39 AU

Year: 1052 Days

Day: 14.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,555,493 km

• M1: 139,425 km (0.117 R)
• M2: 540,647 km (0.037 R)
• M3: 998,267 km (0.066 R)
• M4: 1,890,019 km (0.074 R)
• M5: 2,334,475 km (0.117 R)
• M6: 2,734,799 km (0.12 R)
• M7: 3,584,963 km (0.067 R)
• M8: 4,204,747 km (0.066 R)
• M9: 4,932,092 km (0.12 R)
• M10: 5,296,662 km (0.099 R)
• M11: 6,037,321 km (0.104 R)
• M12: 7,034,690 km (0.099 R)
• M13: 8,033,854 km (0.113 R)
• M14: 9,296,909 km (0.113 R)
• M15: 9,706,359 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829.5

Radius: 8.4

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.76 AU - 2.46 AU

Year: 2011 Days

Day: 5.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 60,555,493 km

• M1: 104,419 km (0.064 R)
• M2: 417,976 km (0.076 R)
• M3: 807,829 km (0.119 R)
• M4: 1,195,137 km (0.075 R)
• M5: 1,559,109 km (0.112 R)
• M6: 1,902,586 km (0.117 R)
• M7: 2,849,091 km (0.09 R)
• M8: 3,522,880 km (0.112 R)
• M9: 5,002,553 km (0.099 R)
• M10: 6,057,367 km (0.089 R)
• M11: 6,774,240 km (0.119 R)
• M12: 7,907,893 km (0.039 R)
• M13: 8,375,985 km (0.104 R)
• M14: 9,163,318 km (0.082 R)
• M15: 9,714,886 km (0.1 R)
• M16: 10,472,300 km (0.089 R)
• M17: 11,268,609 km (0.097 R)
• M18: 13,326,178 km (0.089 R)
• M19: 14,034,375 km (0.113 R)
• M20: 14,535,528 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.8

Radius: 13.2

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 3.91 AU - 4.15 AU

Year: 5307 Days

Day: 9.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,555,493 km

• M1: 165,156 km (0.112 R)
• M2: 620,233 km (0.082 R)
• M3: 1,045,839 km (0.115 R)
• M4: 1,500,467 km (0.117 R)
• M5: 2,997,493 km (0.111 R)
• M6: 4,173,781 km (0.108 R)
• M7: 5,808,287 km (0.093 R)
• M8: 6,341,753 km (0.116 R)
• M9: 7,160,801 km (0.096 R)
• M10: 9,177,231 km (0.086 R)
• M11: 10,741,426 km (0.119 R)
• M12: 13,281,598 km (0.083 R)
• M13: 13,718,723 km (0.091 R)
• M14: 15,182,987 km (0.109 R)
• M15: 15,661,251 km (0.08 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 137.4

Radius: 8.6

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 4.26 AU - 5.68 AU

Year: 7268 Days

Day: 12.8 Hours

Environment

Temp: -217 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 60,555,493 km

• M1: 109,805 km (0.094 R)
• M2: 747,541 km (0.109 R)
• M3: 1,066,633 km (0.118 R)
• M4: 1,803,552 km (0.055 R)
• M5: 2,511,150 km (0.097 R)
• M6: 3,373,731 km (0.098 R)
• M7: 4,200,409 km (0.035 R)
• M8: 5,032,173 km (0.046 R)
• M9: 5,618,597 km (0.079 R)
• M10: 6,716,047 km (0.072 R)
• M11: 7,299,927 km (0.114 R)
• M12: 10,574,924 km (0.109 R)
• M13: 11,322,464 km (0.03 R)
• M14: 11,971,869 km (0.092 R)
• M15: 12,509,075 km (0.085 R)
• M16: 12,783,587 km (0.099 R)
• M17: 14,020,312 km (0.074 R)
• M18: 14,973,101 km (0.109 R)
• M19: 16,785,031 km (0.116 R)
• M20: 20,457,359 km (0.113 R)
• M21: 20,774,955 km (0.106 R)
• M22: 22,078,701 km (0.102 R)
• M23: 22,480,072 km (0.056 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 845.7

Radius: 3.6

Gravity: 65.25 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 6.17 AU - 8.31 AU

Year: 12780 Days

Day: 23 Hours

Environment

Temp: -214 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 60,555,493 km

• M1: 44,730 km (0.071 R)
• M2: 225,444 km (0.061 R)
• M3: 479,760 km (0.058 R)
• M4: 697,874 km (0.119 R)
• M5: 1,330,823 km (0.114 R)
• M6: 2,065,049 km (0.106 R)
• M7: 2,402,093 km (0.102 R)
• M8: 3,085,007 km (0.107 R)
• M9: 3,634,181 km (0.052 R)
• M10: 3,830,902 km (0.088 R)
• M11: 4,496,014 km (0.05 R)
• M12: 5,059,998 km (0.112 R)
• M13: 6,529,797 km (0.109 R)
• M14: 7,699,802 km (0.091 R)
• M15: 8,166,398 km (0.098 R)
• M16: 8,850,958 km (0.096 R)
• M17: 10,445,372 km (0.108 R)
• M18: 10,671,415 km (0.119 R)
• M19: 11,133,373 km (0.086 R)
• M20: 13,049,871 km (0.027 R)
• M21: 15,175,358 km (0.119 R)
• M22: 15,319,869 km (0.096 R)
• M23: 21,338,191 km (0.103 R)
• M24: 21,519,654 km (0.034 R)
• M25: 23,875,820 km (0.079 R)
• M26: 25,983,355 km (0.086 R)
• M27: 26,190,249 km (0.044 R)
• M28: 27,777,632 km (0.085 R)
• M29: 29,765,788 km (0.086 R)
• M30: 30,910,211 km (0.067 R)
• M31: 33,408,496 km (0.062 R)
• M32: 36,037,977 km (0.116 R)
• M33: 36,813,792 km (0.097 R)
• M34: 38,802,097 km (0.114 R)
• M35: 47,471,743 km (0.083 R)
• M36: 49,665,147 km (0.077 R)
• M37: 51,925,122 km (0.098 R)
• M38: 56,996,938 km (0.065 R)
• M39: 59,652,301 km (0.119 R)
• M40: 60,555,423 km (0.12 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 16,939 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit