🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.16

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.5 AU - 0.56 AU

Year: 253 Days

Day: 25.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.53 AU - 0.65 AU

Year: 297 Days

Day: 16.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 16,986,032 km

• M1: 53,257 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.3

Radius: 13.5

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.93 AU - 1.05 AU

Year: 646 Days

Day: 12.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 16,986,032 km

• M1: 168,148 km (0.119 R)
• M2: 614,249 km (0.076 R)
• M3: 1,055,263 km (0.026 R)
• M4: 1,704,369 km (0.111 R)
• M5: 2,140,746 km (0.115 R)
• M6: 3,186,584 km (0.104 R)
• M7: 3,620,867 km (0.095 R)
• M8: 4,151,491 km (0.041 R)
• M9: 4,656,383 km (0.086 R)
• M10: 5,086,328 km (0.05 R)
• M11: 5,971,797 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.8

Radius: 9.5

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.92 AU - 2.1 AU

Year: 1869 Days

Day: 5.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 16,986,032 km

• M1: 118,182 km (0.092 R)
• M2: 470,037 km (0.114 R)
• M3: 1,056,610 km (0.116 R)
• M4: 1,535,772 km (0.087 R)
• M5: 1,879,697 km (0.066 R)
• M6: 2,505,316 km (0.107 R)
• M7: 3,178,955 km (0.064 R)
• M8: 3,498,346 km (0.114 R)
• M9: 3,855,137 km (0.043 R)
• M10: 4,253,516 km (0.06 R)
• M11: 4,624,369 km (0.076 R)
• M12: 4,959,469 km (0.057 R)
• M13: 5,636,848 km (0.09 R)
• M14: 6,719,936 km (0.052 R)
• M15: 7,805,867 km (0.097 R)
• M16: 9,293,618 km (0.109 R)
• M17: 10,197,488 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 348.4

Radius: 10.5

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.64 AU - 2.44 AU

Year: 1911 Days

Day: 6.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 16,986,032 km

• M1: 131,646 km (0.028 R)
• M2: 508,483 km (0.107 R)
• M3: 916,736 km (0.092 R)
• M4: 1,252,882 km (0.086 R)
• M5: 1,691,802 km (0.056 R)
• M6: 2,421,092 km (0.093 R)
• M7: 2,750,806 km (0.099 R)
• M8: 3,154,271 km (0.104 R)
• M9: 3,629,394 km (0.111 R)
• M10: 4,151,640 km (0.069 R)
• M11: 4,859,836 km (0.067 R)
• M12: 5,263,751 km (0.039 R)
• M13: 7,765,925 km (0.088 R)
• M14: 8,178,815 km (0.082 R)
• M15: 9,199,521 km (0.083 R)
• M16: 9,630,812 km (0.09 R)
• M17: 10,335,717 km (0.074 R)
• M18: 10,734,545 km (0.105 R)
• M19: 12,508,476 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923

Radius: 10.5

Gravity: 8.37 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 2.04 AU - 2.38 AU

Year: 2155 Days

Day: 10.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 16,986,032 km

• M1: 130,599 km (0.04 R)
• M2: 610,958 km (0.063 R)
• M3: 969,095 km (0.085 R)
• M4: 1,395,449 km (0.088 R)
• M5: 1,899,295 km (0.105 R)
• M6: 2,493,198 km (0.032 R)
• M7: 3,467,679 km (0.086 R)
• M8: 3,895,229 km (0.092 R)
• M9: 4,336,842 km (0.055 R)
• M10: 4,811,816 km (0.087 R)
• M11: 5,969,254 km (0.089 R)
• M12: 6,339,659 km (0.071 R)
• M13: 7,303,518 km (0.109 R)
• M14: 8,040,736 km (0.117 R)
• M15: 9,484,804 km (0.074 R)
• M16: 9,880,491 km (0.109 R)
• M17: 11,697,058 km (0.11 R)
• M18: 12,533,908 km (0.069 R)
• M19: 13,010,976 km (0.116 R)
• M20: 14,896,358 km (0.119 R)
• M21: 17,648,958 km (0.034 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125.3

Radius: 14.2

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.97 AU - 2.85 AU

Year: 2454 Days

Day: 12.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 16,986,032 km

• M1: 179,069 km (0.092 R)
• M2: 937,231 km (0.074 R)
• M3: 1,448,855 km (0.108 R)
• M4: 2,018,674 km (0.053 R)
• M5: 3,460,348 km (0.119 R)
• M6: 4,141,019 km (0.083 R)
• M7: 4,673,138 km (0.093 R)
• M8: 5,527,193 km (0.109 R)
• M9: 6,152,811 km (0.092 R)
• M10: 6,618,509 km (0.114 R)
• M11: 7,823,520 km (0.051 R)
• M12: 8,805,929 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 718.1

Radius: 9.3

Gravity: 8.3 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 3.68 AU - 5.28 AU

Year: 6221 Days

Day: 11.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 16,986,032 km

• M1: 115,639 km (0.053 R)
• M2: 407,205 km (0.1 R)
• M3: 1,129,015 km (0.091 R)
• M4: 1,711,400 km (0.093 R)
• M5: 2,056,372 km (0.074 R)
• M6: 3,169,680 km (0.032 R)
• M7: 4,175,426 km (0.115 R)
• M8: 5,809,334 km (0.094 R)
• M9: 7,754,854 km (0.116 R)
• M10: 8,626,412 km (0.102 R)
• M11: 8,917,080 km (0.093 R)
• M12: 10,516,431 km (0.077 R)
• M13: 12,194,620 km (0.12 R)
• M14: 13,426,558 km (0.079 R)
• M15: 14,976,542 km (0.094 R)
• M16: 19,402,694 km (0.073 R)
• M17: 22,454,491 km (0.113 R)
• M18: 24,630,392 km (0.071 R)
• M19: 29,584,774 km (0.075 R)
• M20: 33,812,111 km (0.093 R)
• M21: 34,640,584 km (0.036 R)
• M22: 35,482,670 km (0.082 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 17.2

Radius: 7

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 7.43 AU - 7.45 AU

Year: 13313 Days

Day: 20.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 16,986,032 km

• M1: 87,216 km (0.055 R)
• M2: 585,676 km (0.086 R)
• M3: 836,701 km (0.053 R)
• M4: 4,664,013 km (0.089 R)
• M5: 6,033,731 km (0.072 R)
• M6: 9,472,986 km (0.051 R)
• M7: 10,031,734 km (0.107 R)
• M8: 15,701,942 km (0.097 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 544 - 17,022 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit