🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.33

Radius: 1.12

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.55 AU - 0.79 AU

Year: 354 Days

Day: 41.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 1.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.4

Radius: 10.8

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.64 AU - 0.84 AU

Year: 411 Days

Day: 5.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,879,024 km

• M1: 134,339 km (0.115 R)
• M2: 483,949 km (0.12 R)
• M3: 904,319 km (0.063 R)
• M4: 1,560,306 km (0.038 R)
• M5: 1,999,076 km (0.116 R)
• M6: 2,646,237 km (0.101 R)
• M7: 3,177,758 km (0.073 R)
• M8: 3,563,571 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 205.5

Radius: 9.1

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.82 AU - 1.12 AU

Year: 617 Days

Day: 5.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 56,879,024 km

• M1: 115,490 km (0.108 R)
• M2: 453,132 km (0.07 R)
• M3: 1,005,746 km (0.064 R)
• M4: 1,836,164 km (0.109 R)
• M5: 2,145,981 km (0.108 R)
• M6: 3,925,897 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.3

Radius: 12.2

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.31 AU - 1.41 AU

Year: 1024 Days

Day: 5.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,879,024 km

• M1: 151,692 km (0.115 R)
• M2: 581,786 km (0.116 R)
• M3: 1,179,130 km (0.098 R)
• M4: 1,758,373 km (0.078 R)
• M5: 3,036,238 km (0.102 R)
• M6: 4,307,072 km (0.098 R)
• M7: 4,942,414 km (0.11 R)
• M8: 5,620,841 km (0.12 R)
• M9: 6,259,474 km (0.096 R)
• M10: 6,924,437 km (0.105 R)
• M11: 7,453,714 km (0.043 R)
• M12: 7,891,736 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 868.4

Radius: 10.8

Gravity: 7.45 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 1.55 AU - 1.55 AU

Year: 1246 Days

Day: 11.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,879,024 km

• M1: 134,488 km (0.062 R)
• M2: 487,091 km (0.077 R)
• M3: 826,079 km (0.095 R)
• M4: 1,203,066 km (0.095 R)
• M5: 1,613,563 km (0.119 R)
• M6: 2,150,918 km (0.104 R)
• M7: 2,646,087 km (0.049 R)
• M8: 3,799,636 km (0.088 R)
• M9: 5,035,016 km (0.099 R)
• M10: 5,408,711 km (0.025 R)
• M11: 5,890,566 km (0.031 R)
• M12: 6,666,979 km (0.103 R)
• M13: 7,169,927 km (0.101 R)
• M14: 7,590,446 km (0.066 R)
• M15: 8,083,072 km (0.104 R)
• M16: 10,402,737 km (0.109 R)
• M17: 11,823,169 km (0.1 R)
• M18: 12,336,588 km (0.12 R)

Asteroid Belt

Center: 2.32 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207

Radius: 10

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 3.02 AU - 3.14 AU

Year: 3490 Days

Day: 10.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,879,024 km

• M1: 124,316 km (0.058 R)
• M2: 471,682 km (0.118 R)
• M3: 820,245 km (0.093 R)
• M4: 1,144,424 km (0.099 R)
• M5: 1,704,817 km (0.086 R)
• M6: 2,020,020 km (0.106 R)
• M7: 2,533,440 km (0.111 R)
• M8: 2,962,636 km (0.115 R)
• M9: 3,507,472 km (0.093 R)
• M10: 3,913,032 km (0.067 R)
• M11: 4,449,041 km (0.107 R)
• M12: 6,029,393 km (0.115 R)
• M13: 6,906,036 km (0.115 R)
• M14: 7,262,827 km (0.112 R)
• M15: 8,377,331 km (0.055 R)
• M16: 8,688,644 km (0.114 R)
• M17: 9,105,125 km (0.12 R)
• M18: 9,467,750 km (0.064 R)
• M19: 9,943,322 km (0.117 R)
• M20: 10,470,505 km (0.057 R)
• M21: 12,483,793 km (0.051 R)
• M22: 13,014,566 km (0.111 R)
• M23: 14,208,955 km (0.117 R)
• M24: 14,608,082 km (0.109 R)
• M25: 15,243,574 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.6

Radius: 10.1

Gravity: 5.57 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 4.65 AU - 6.01 AU

Year: 7945 Days

Day: 5.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,879,024 km

• M1: 125,662 km (0.12 R)
• M2: 513,719 km (0.032 R)
• M3: 900,729 km (0.068 R)
• M4: 1,937,741 km (0.113 R)
• M5: 2,722,382 km (0.091 R)
• M6: 3,252,557 km (0.064 R)
• M7: 3,826,115 km (0.093 R)
• M8: 8,280,242 km (0.11 R)
• M9: 12,183,550 km (0.105 R)
• M10: 13,737,572 km (0.066 R)
• M11: 16,440,357 km (0.049 R)
• M12: 23,036,875 km (0.098 R)
• M13: 23,365,392 km (0.116 R)
• M14: 24,454,614 km (0.114 R)
• M15: 31,107,680 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 55.7

Radius: 7.8

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 6.44 AU - 6.54 AU

Year: 10675 Days

Day: 21.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 56,879,024 km

• M1: 195,824 km (0.042 R)
• M2: 703,708 km (0.117 R)
• M3: 1,199,625 km (0.101 R)
• M4: 2,828,746 km (0.12 R)
• M5: 3,788,566 km (0.103 R)
• M6: 6,192,903 km (0.093 R)
• M7: 8,291,911 km (0.075 R)
• M8: 10,662,887 km (0.115 R)
• M9: 15,166,531 km (0.068 R)
• M10: 21,176,775 km (0.043 R)
• M11: 21,497,064 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 512.8

Radius: 6.8

Gravity: 11.09 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 6.23 AU - 10.01 AU

Year: 14940 Days

Day: 20.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 56,879,024 km

• M1: 85,121 km (0.098 R)
• M2: 480,359 km (0.06 R)
• M3: 2,561,564 km (0.071 R)
• M4: 3,127,792 km (0.103 R)
• M5: 4,056,496 km (0.09 R)
• M6: 4,292,412 km (0.076 R)
• M7: 5,540,956 km (0.118 R)
• M8: 5,906,124 km (0.117 R)
• M9: 6,889,880 km (0.112 R)
• M10: 7,355,578 km (0.071 R)
• M11: 8,256,007 km (0.067 R)
• M12: 14,558,117 km (0.097 R)
• M13: 16,191,127 km (0.104 R)
• M14: 16,412,682 km (0.105 R)
• M15: 17,551,570 km (0.11 R)
• M16: 21,019,099 km (0.097 R)
• M17: 21,817,353 km (0.054 R)
• M18: 22,727,806 km (0.101 R)
• M19: 24,527,169 km (0.06 R)
• M20: 26,933,002 km (0.104 R)
• M21: 28,086,402 km (0.068 R)
• M22: 30,943,123 km (0.078 R)
• M23: 38,262,947 km (0.118 R)
• M24: 38,920,429 km (0.067 R)
• M25: 41,075,087 km (0.049 R)
• M26: 45,180,651 km (0.052 R)
• M27: 46,806,930 km (0.073 R)
• M28: 48,318,915 km (0.113 R)
• M29: 50,963,357 km (0.057 R)
• M30: 52,725,022 km (0.083 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 461 - 13,475 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit