🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.58 AU - 0.72 AU

Year: 344 Days

Day: 13.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 45.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,564,309 km

• M1: 43,832 km (0.07 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.6

Radius: 8.2

Gravity: 12.13 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.59 AU - 0.79 AU

Year: 376 Days

Day: 12.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 51,564,309 km

• M1: 102,026 km (0.103 R)
• M2: 365,468 km (0.031 R)
• M3: 687,103 km (0.118 R)
• M4: 1,246,300 km (0.059 R)
• M5: 1,563,148 km (0.114 R)
• M6: 2,174,704 km (0.092 R)
• M7: 2,455,051 km (0.095 R)
• M8: 3,200,946 km (0.114 R)
• M9: 3,540,982 km (0.075 R)
• M10: 4,519,651 km (0.09 R)
• M11: 4,933,588 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309

Radius: 12.3

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.78 AU - 1.16 AU

Year: 627 Days

Day: 13.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,564,309 km

• M1: 153,188 km (0.096 R)
• M2: 624,272 km (0.089 R)
• M3: 1,544,897 km (0.032 R)
• M4: 2,651,473 km (0.108 R)
• M5: 3,154,122 km (0.107 R)
• M6: 4,564,680 km (0.12 R)
• M7: 5,435,489 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.5

Radius: 12.6

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.3 AU - 1.44 AU

Year: 1052 Days

Day: 11.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,564,309 km

• M1: 156,629 km (0.097 R)
• M2: 598,990 km (0.083 R)
• M3: 1,041,052 km (0.105 R)
• M4: 1,725,761 km (0.054 R)
• M5: 2,126,534 km (0.042 R)
• M6: 2,743,475 km (0.085 R)
• M7: 3,606,954 km (0.087 R)
• M8: 4,405,208 km (0.069 R)
• M9: 4,819,894 km (0.052 R)
• M10: 5,569,678 km (0.107 R)
• M11: 6,592,629 km (0.061 R)
• M12: 7,160,801 km (0.069 R)
• M13: 7,614,382 km (0.104 R)
• M14: 8,011,116 km (0.053 R)
• M15: 9,064,135 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.2

Radius: 14.6

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 1.22 AU - 1.68 AU

Year: 1145 Days

Day: 8 Hours

Environment

Temp: -170 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 51,564,309 km

• M1: 181,612 km (0.08 R)
• M2: 805,136 km (0.106 R)
• M3: 1,304,344 km (0.114 R)
• M4: 1,848,431 km (0.111 R)
• M5: 2,377,260 km (0.064 R)
• M6: 2,905,490 km (0.076 R)
• M7: 3,426,689 km (0.051 R)
• M8: 3,916,323 km (0.106 R)
• M9: 5,457,630 km (0.085 R)
• M10: 6,129,922 km (0.108 R)
• M11: 6,675,655 km (0.091 R)
• M12: 7,135,519 km (0.098 R)
• M13: 8,698,069 km (0.09 R)
• M14: 9,938,385 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 699.3

Radius: 14.6

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.38 AU - 2.2 AU

Year: 1571 Days

Day: 14.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,564,309 km

• M1: 181,612 km (0.087 R)
• M2: 684,560 km (0.072 R)
• M3: 1,201,869 km (0.12 R)
• M4: 1,687,015 km (0.109 R)
• M5: 2,143,139 km (0.116 R)
• M6: 2,670,023 km (0.032 R)
• M7: 3,851,846 km (0.096 R)
• M8: 4,409,696 km (0.064 R)
• M9: 5,380,437 km (0.105 R)
• M10: 7,256,843 km (0.059 R)
• M11: 8,285,927 km (0.096 R)
• M12: 9,127,864 km (0.071 R)
• M13: 12,453,574 km (0.103 R)
• M14: 12,958,916 km (0.097 R)
• M15: 13,518,412 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660

Radius: 10

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.61 AU - 4.19 AU

Year: 4113 Days

Day: 12.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,564,309 km

• M1: 127,009 km (0.091 R)
• M2: 449,691 km (0.066 R)
• M3: 1,052,271 km (0.073 R)
• M4: 1,946,717 km (0.075 R)
• M5: 2,514,740 km (0.036 R)
• M6: 4,092,250 km (0.038 R)
• M7: 4,975,476 km (0.098 R)
• M8: 8,245,685 km (0.069 R)
• M9: 9,177,530 km (0.107 R)
• M10: 10,986,019 km (0.092 R)
• M11: 11,338,771 km (0.066 R)
• M12: 13,516,018 km (0.101 R)
• M13: 18,370,619 km (0.029 R)
• M14: 18,805,500 km (0.118 R)
• M15: 25,026,976 km (0.07 R)
• M16: 25,408,151 km (0.113 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 969.9

Radius: 6.5

Gravity: 22.96 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 5.62 AU - 8.76 AU

Year: 12647 Days

Day: 16.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 51,564,309 km

• M1: 81,381 km (0.112 R)
• M2: 288,724 km (0.095 R)
• M3: 546,930 km (0.092 R)
• M4: 971,788 km (0.057 R)
• M5: 1,237,623 km (0.109 R)
• M6: 1,744,461 km (0.066 R)
• M7: 2,684,833 km (0.103 R)
• M8: 3,668,439 km (0.039 R)
• M9: 6,607,888 km (0.047 R)
• M10: 9,387,416 km (0.092 R)
• M11: 9,707,705 km (0.089 R)
• M12: 12,157,520 km (0.079 R)
• M13: 12,474,218 km (0.103 R)
• M14: 12,731,527 km (0.098 R)
• M15: 15,502,977 km (0.075 R)
• M16: 16,253,958 km (0.074 R)
• M17: 16,638,425 km (0.098 R)
• M18: 19,501,429 km (0.08 R)
• M19: 20,554,149 km (0.06 R)
• M20: 21,459,964 km (0.101 R)
• M21: 27,678,000 km (0.109 R)
• M22: 30,608,323 km (0.108 R)
• M23: 32,389,585 km (0.074 R)
• M24: 33,738,957 km (0.12 R)
• M25: 41,621,868 km (0.082 R)
• M26: 42,052,560 km (0.032 R)
• M27: 45,758,249 km (0.08 R)
• M28: 49,194,362 km (0.102 R)
• M29: 49,998,600 km (0.105 R)
• M30: 52,463,973 km (0.074 R)
• M31: 57,103,602 km (0.058 R)
• M32: 57,991,914 km (0.074 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 455

Radius: 3.8

Gravity: 31.51 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 5.75 AU - 9.41 AU

Year: 13690 Days

Day: 18.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,564,309 km

• M1: 47,273 km (0.047 R)
• M2: 239,057 km (0.027 R)
• M3: 842,535 km (0.076 R)
• M4: 2,531,794 km (0.078 R)
• M5: 4,086,266 km (0.109 R)
• M6: 5,094,555 km (0.057 R)
• M7: 6,840,961 km (0.102 R)
• M8: 9,289,729 km (0.111 R)
• M9: 10,844,499 km (0.108 R)
• M10: 15,750,711 km (0.082 R)
• M11: 18,641,989 km (0.096 R)
• M12: 40,425,234 km (0.106 R)
• M13: 46,486,192 km (0.089 R)
• M14: 48,386,384 km (0.107 R)
• M15: 48,534,636 km (0.079 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 471 - 20,281 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit