🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.11

Radius: 0.41

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.48 AU - 0.66 AU

Year: 274 Days

Day: 40.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 153 °

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: 568.3

Radius: 10.9

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.58 AU - 0.9 AU

Year: 405 Days

Day: 6.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 45,862,629 km

• M1: 135,536 km (0.084 R)
• M2: 704,157 km (0.092 R)
• M3: 1,827,787 km (0.117 R)
• M4: 2,257,731 km (0.054 R)
• M5: 3,335,434 km (0.105 R)
• M6: 3,983,193 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.2

Radius: 14.6

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.82 AU - 0.82 AU

Year: 472 Days

Day: 15 Hours

Environment

Temp: -150 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,862,629 km

• M1: 181,612 km (0.119 R)
• M2: 701,764 km (0.103 R)
• M3: 1,204,263 km (0.101 R)
• M4: 1,871,769 km (0.077 R)
• M5: 2,360,355 km (0.066 R)
• M6: 2,945,582 km (0.102 R)
• M7: 3,590,648 km (0.099 R)
• M8: 4,454,576 km (0.039 R)
• M9: 5,043,094 km (0.066 R)
• M10: 5,551,128 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.7

Radius: 8.1

Gravity: 13.83 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.16 AU - 1.28 AU

Year: 857 Days

Day: 12.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,862,629 km

• M1: 101,278 km (0.091 R)
• M2: 363,523 km (0.086 R)
• M3: 643,570 km (0.081 R)
• M4: 1,048,831 km (0.116 R)
• M5: 1,500,766 km (0.093 R)
• M6: 1,795,623 km (0.032 R)
• M7: 2,149,871 km (0.099 R)
• M8: 2,908,781 km (0.098 R)
• M9: 3,357,126 km (0.1 R)
• M10: 4,107,210 km (0.12 R)
• M11: 4,426,451 km (0.068 R)
• M12: 4,707,995 km (0.104 R)
• M13: 5,153,048 km (0.09 R)
• M14: 5,544,995 km (0.051 R)
• M15: 6,062,903 km (0.115 R)
• M16: 6,567,347 km (0.087 R)
• M17: 7,243,080 km (0.058 R)
• M18: 8,569,564 km (0.116 R)
• M19: 8,842,132 km (0.08 R)
• M20: 9,931,204 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204.2

Radius: 12.5

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.23 AU - 1.33 AU

Year: 921 Days

Day: 8.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,862,629 km

• M1: 155,432 km (0.048 R)
• M2: 585,227 km (0.109 R)
• M3: 1,104,331 km (0.11 R)
• M4: 2,159,595 km (0.096 R)
• M5: 3,799,786 km (0.1 R)
• M6: 5,199,872 km (0.073 R)
• M7: 6,415,056 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 954.9

Radius: 8.1

Gravity: 14.55 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.29 AU - 2.65 AU

Year: 2468 Days

Day: 10.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 45,862,629 km

• M1: 104,419 km (0.099 R)
• M2: 448,345 km (0.038 R)
• M3: 896,091 km (0.114 R)
• M4: 1,197,681 km (0.1 R)
• M5: 1,599,351 km (0.071 R)
• M6: 2,181,885 km (0.048 R)
• M7: 3,311,648 km (0.06 R)
• M8: 5,675,145 km (0.1 R)
• M9: 10,716,144 km (0.076 R)
• M10: 11,704,238 km (0.101 R)
• M11: 12,796,901 km (0.099 R)
• M12: 13,624,626 km (0.106 R)
• M13: 16,110,943 km (0.093 R)
• M14: 16,481,646 km (0.109 R)
• M15: 16,749,875 km (0.097 R)
• M16: 17,965,059 km (0.101 R)
• M17: 20,078,428 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.2

Radius: 10.2

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.49 AU - 4.25 AU

Year: 4841 Days

Day: 14.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 45,862,629 km

• M1: 127,009 km (0.1 R)
• M2: 716,424 km (0.06 R)
• M3: 1,056,011 km (0.116 R)
• M4: 1,643,183 km (0.113 R)
• M5: 1,985,164 km (0.088 R)
• M6: 2,344,348 km (0.078 R)
• M7: 2,781,324 km (0.086 R)
• M8: 3,310,750 km (0.039 R)
• M9: 4,038,245 km (0.112 R)
• M10: 4,404,610 km (0.087 R)
• M11: 5,311,323 km (0.088 R)
• M12: 5,639,840 km (0.045 R)
• M13: 6,676,553 km (0.119 R)
• M14: 7,190,870 km (0.054 R)
• M15: 8,630,152 km (0.106 R)
• M16: 9,637,244 km (0.116 R)
• M17: 10,421,287 km (0.07 R)
• M18: 11,562,569 km (0.117 R)
• M19: 11,929,981 km (0.101 R)
• M20: 13,128,560 km (0.079 R)
• M21: 13,680,725 km (0.052 R)
• M22: 14,405,677 km (0.098 R)
• M23: 16,215,960 km (0.033 R)
• M24: 17,087,069 km (0.08 R)
• M25: 18,234,784 km (0.112 R)
• M26: 19,822,466 km (0.112 R)
• M27: 20,482,492 km (0.095 R)
• M28: 21,707,698 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 106.5

Radius: 11

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.13 AU - 4.77 AU

Year: 5969 Days

Day: 11 Hours

Environment

Temp: -221 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,862,629 km

• M1: 136,882 km (0.063 R)
• M2: 530,624 km (0.112 R)
• M3: 1,139,786 km (0.108 R)
• M4: 2,007,603 km (0.104 R)
• M5: 2,570,839 km (0.062 R)
• M6: 9,561,548 km (0.038 R)
• M7: 11,792,501 km (0.043 R)
• M8: 13,225,050 km (0.086 R)
• M9: 13,622,980 km (0.117 R)
• M10: 17,626,220 km (0.06 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 530.6

Radius: 6.2

Gravity: 13.8 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 5.33 AU - 7.75 AU

Year: 10634 Days

Day: 15.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 45,862,629 km

• M1: 77,043 km (0.067 R)
• M2: 322,533 km (0.092 R)
• M3: 929,152 km (0.051 R)
• M4: 1,605,784 km (0.096 R)
• M5: 2,267,156 km (0.096 R)
• M6: 2,730,909 km (0.074 R)
• M7: 3,421,004 km (0.088 R)
• M8: 3,977,359 km (0.092 R)
• M9: 4,305,128 km (0.075 R)
• M10: 5,015,119 km (0.119 R)
• M11: 5,938,736 km (0.112 R)
• M12: 6,150,567 km (0.112 R)
• M13: 6,552,088 km (0.062 R)
• M14: 7,009,857 km (0.07 R)
• M15: 7,904,303 km (0.12 R)
• M16: 12,535,254 km (0.107 R)
• M17: 14,987,612 km (0.119 R)
• M18: 15,781,528 km (0.081 R)
• M19: 15,984,383 km (0.118 R)
• M20: 17,961,768 km (0.056 R)
• M21: 18,630,470 km (0.112 R)
• M22: 19,009,102 km (0.044 R)
• M23: 19,238,735 km (0.105 R)
• M24: 19,625,595 km (0.104 R)
• M25: 22,909,268 km (0.071 R)
• M26: 24,050,700 km (0.096 R)
• M27: 25,137,529 km (0.115 R)
• M28: 26,732,691 km (0.041 R)
• M29: 30,644,825 km (0.082 R)
• M30: 37,262,586 km (0.091 R)
• M31: 40,838,872 km (0.074 R)
• M32: 41,864,366 km (0.066 R)
• M33: 45,451,723 km (0.065 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 429 - 12,030 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit