🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.47 AU - 0.71 AU

Year: 293 Days

Day: 41.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.7

Radius: 9.7

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.69 AU - 0.77 AU

Year: 403 Days

Day: 14.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 56,255,988 km

• M1: 120,576 km (0.108 R)
• M2: 515,215 km (0.062 R)
• M3: 820,993 km (0.065 R)
• M4: 1,332,917 km (0.036 R)
• M5: 2,103,196 km (0.1 R)
• M6: 2,807,802 km (0.106 R)
• M7: 3,191,970 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.4

Radius: 12.3

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.82 AU - 0.96 AU

Year: 542 Days

Day: 10 Hours

Environment

Temp: -161 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,255,988 km

• M1: 153,039 km (0.034 R)
• M2: 558,898 km (0.09 R)
• M3: 949,348 km (0.099 R)
• M4: 1,532,929 km (0.104 R)
• M5: 1,932,505 km (0.118 R)
• M6: 2,420,793 km (0.099 R)
• M7: 2,949,023 km (0.062 R)
• M8: 3,435,665 km (0.073 R)
• M9: 4,487,039 km (0.12 R)
• M10: 5,011,828 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.4

Radius: 13.5

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.74 AU - 1.1 AU

Year: 570 Days

Day: 12.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,255,988 km

• M1: 167,849 km (0.04 R)
• M2: 611,257 km (0.088 R)
• M3: 1,073,963 km (0.101 R)
• M4: 1,508,395 km (0.035 R)
• M5: 2,071,631 km (0.103 R)
• M6: 2,646,386 km (0.103 R)
• M7: 3,499,543 km (0.069 R)
• M8: 5,160,827 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756.5

Radius: 14.2

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.82 AU - 1.12 AU

Year: 617 Days

Day: 14.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,255,988 km

• M1: 176,525 km (0.118 R)
• M2: 671,246 km (0.109 R)
• M3: 1,127,070 km (0.068 R)
• M4: 1,666,670 km (0.098 R)
• M5: 2,480,482 km (0.08 R)
• M6: 3,021,279 km (0.114 R)
• M7: 3,520,786 km (0.115 R)
• M8: 3,974,367 km (0.113 R)
• M9: 4,884,221 km (0.06 R)
• M10: 5,344,982 km (0.11 R)
• M11: 6,004,709 km (0.076 R)
• M12: 6,474,446 km (0.066 R)
• M13: 7,290,353 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.5

Radius: 11.8

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.89 AU - 1.47 AU

Year: 828 Days

Day: 6.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,255,988 km

• M1: 152,291 km (0.036 R)
• M2: 559,197 km (0.07 R)
• M3: 961,765 km (0.076 R)
• M4: 1,825,244 km (0.089 R)
• M5: 2,348,986 km (0.115 R)
• M6: 3,047,309 km (0.056 R)
• M7: 3,701,799 km (0.074 R)
• M8: 4,382,170 km (0.089 R)
• M9: 5,217,675 km (0.071 R)
• M10: 6,622,847 km (0.064 R)
• M11: 7,158,557 km (0.066 R)
• M12: 8,547,574 km (0.051 R)
• M13: 9,048,278 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802

Radius: 12.8

Gravity: 4.9 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.29 AU - 1.99 AU

Year: 1356 Days

Day: 14.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,255,988 km

• M1: 159,322 km (0.1 R)
• M2: 677,080 km (0.106 R)
• M3: 1,289,234 km (0.116 R)
• M4: 1,776,624 km (0.081 R)
• M5: 2,245,464 km (0.039 R)
• M6: 2,703,383 km (0.118 R)
• M7: 3,727,680 km (0.095 R)
• M8: 5,455,086 km (0.045 R)
• M9: 6,532,640 km (0.103 R)
• M10: 6,955,703 km (0.103 R)
• M11: 8,925,308 km (0.044 R)
• M12: 9,604,931 km (0.1 R)
• M13: 11,102,556 km (0.077 R)
• M14: 11,743,283 km (0.056 R)
• M15: 12,408,545 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 874.2

Radius: 6.8

Gravity: 18.91 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 7.36 AU - 8.24 AU

Year: 14066 Days

Day: 15.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 56,255,988 km

• M1: 84,523 km (0.059 R)
• M2: 477,516 km (0.111 R)
• M3: 723,455 km (0.116 R)
• M4: 1,353,412 km (0.078 R)
• M5: 1,593,517 km (0.094 R)
• M6: 2,007,753 km (0.103 R)
• M7: 2,240,677 km (0.045 R)
• M8: 3,025,617 km (0.058 R)
• M9: 3,413,225 km (0.08 R)
• M10: 3,718,105 km (0.091 R)
• M11: 3,951,329 km (0.044 R)
• M12: 4,610,158 km (0.093 R)
• M13: 5,088,572 km (0.118 R)
• M14: 5,985,112 km (0.083 R)
• M15: 7,475,256 km (0.108 R)
• M16: 9,197,277 km (0.036 R)
• M17: 9,463,262 km (0.09 R)
• M18: 9,954,841 km (0.075 R)
• M19: 11,779,187 km (0.116 R)
• M20: 13,001,401 km (0.082 R)
• M21: 15,099,661 km (0.064 R)
• M22: 20,043,123 km (0.111 R)
• M23: 20,310,753 km (0.096 R)
• M24: 25,442,708 km (0.093 R)
• M25: 28,586,508 km (0.08 R)
• M26: 28,812,400 km (0.083 R)
• M27: 42,419,823 km (0.114 R)
• M28: 43,753,488 km (0.038 R)
• M29: 46,660,473 km (0.117 R)
• M30: 48,883,049 km (0.095 R)
• M31: 52,685,976 km (0.108 R)
• M32: 53,538,086 km (0.114 R)
• M33: 53,881,413 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 431

Radius: 5.6

Gravity: 13.74 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 7 AU - 10.02 AU

Year: 16029 Days

Day: 23.7 Hours

Environment

Temp: -237 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 56,255,988 km

• M1: 69,713 km (0.043 R)
• M2: 255,513 km (0.104 R)
• M3: 467,344 km (0.112 R)
• M4: 744,399 km (0.078 R)
• M5: 1,329,626 km (0.101 R)
• M6: 1,859,502 km (0.082 R)
• M7: 2,258,629 km (0.087 R)
• M8: 2,541,069 km (0.079 R)
• M9: 2,734,948 km (0.109 R)
• M10: 3,638,669 km (0.083 R)
• M11: 4,954,382 km (0.115 R)
• M12: 5,432,347 km (0.1 R)
• M13: 7,348,846 km (0.057 R)
• M14: 7,879,021 km (0.056 R)
• M15: 9,065,182 km (0.115 R)
• M16: 10,365,786 km (0.09 R)
• M17: 11,964,838 km (0.095 R)
• M18: 13,525,293 km (0.084 R)
• M19: 15,428,776 km (0.085 R)
• M20: 16,222,991 km (0.073 R)
• M21: 17,658,533 km (0.083 R)
• M22: 20,264,378 km (0.095 R)
• M23: 22,561,902 km (0.077 R)
• M24: 23,208,913 km (0.111 R)
• M25: 24,154,521 km (0.099 R)
• M26: 25,027,275 km (0.092 R)
• M27: 28,194,561 km (0.109 R)
• M28: 29,818,895 km (0.059 R)
• M29: 32,780,334 km (0.089 R)
• M30: 40,621,207 km (0.046 R)
• M31: 41,578,035 km (0.062 R)
• M32: 52,467,564 km (0.082 R)
• M33: 56,087,533 km (0.108 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 397 - 17,101 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit