🌌 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: 2.62

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.58 AU - 0.6 AU

Year: 297 Days

Day: 21.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 42.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147

Radius: 11.4

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.89 AU - 1.03 AU

Year: 617 Days

Day: 13.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 31,450,888 km

• M1: 142,417 km (0.059 R)
• M2: 802,593 km (0.119 R)
• M3: 1,333,515 km (0.117 R)
• M4: 2,338,664 km (0.076 R)
• M5: 2,787,906 km (0.095 R)
• M6: 3,433,421 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.2

Radius: 14.1

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.02 AU - 1.58 AU

Year: 972 Days

Day: 8.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,450,888 km

• M1: 175,927 km (0.074 R)
• M2: 623,973 km (0.083 R)
• M3: 1,072,467 km (0.091 R)
• M4: 1,638,545 km (0.038 R)
• M5: 2,370,378 km (0.058 R)
• M6: 2,876,169 km (0.11 R)
• M7: 3,825,218 km (0.095 R)
• M8: 4,596,694 km (0.091 R)
• M9: 5,066,880 km (0.095 R)
• M10: 5,589,126 km (0.119 R)
• M11: 6,996,094 km (0.093 R)
• M12: 8,681,763 km (0.06 R)
• M13: 9,375,598 km (0.038 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266

Radius: 11.5

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 1.72 AU - 2.14 AU

Year: 1759 Days

Day: 14 Hours

Environment

Temp: -187 °C

Axial Tilt: 154.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 31,450,888 km

• M1: 143,016 km (0.111 R)
• M2: 805,734 km (0.12 R)
• M3: 1,183,918 km (0.026 R)
• M4: 1,546,692 km (0.08 R)
• M5: 2,425,430 km (0.119 R)
• M6: 2,839,368 km (0.058 R)
• M7: 3,258,092 km (0.118 R)
• M8: 3,640,913 km (0.104 R)
• M9: 4,153,585 km (0.043 R)
• M10: 4,623,322 km (0.113 R)
• M11: 5,032,024 km (0.108 R)
• M12: 5,444,615 km (0.091 R)
• M13: 6,139,048 km (0.101 R)
• M14: 6,680,443 km (0.117 R)
• M15: 9,199,970 km (0.116 R)
• M16: 9,970,848 km (0.09 R)
• M17: 10,529,446 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 179.3

Radius: 12.2

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2.72 AU - 4 AU

Year: 4040 Days

Day: 11.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,450,888 km

• M1: 154,086 km (0.099 R)
• M2: 595,549 km (0.095 R)
• M3: 1,099,395 km (0.07 R)
• M4: 1,747,004 km (0.1 R)
• M5: 3,005,870 km (0.065 R)
• M6: 3,828,958 km (0.034 R)
• M7: 4,363,471 km (0.12 R)
• M8: 5,726,307 km (0.117 R)
• M9: 6,196,194 km (0.108 R)
• M10: 10,713,900 km (0.094 R)
• M11: 12,831,159 km (0.114 R)
• M12: 13,856,353 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957

Radius: 12.7

Gravity: 5.93 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 3.48 AU - 3.92 AU

Year: 4669 Days

Day: 14 Hours

Environment

Temp: -201 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,450,888 km

• M1: 157,975 km (0.1 R)
• M2: 3,121,360 km (0.056 R)
• M3: 3,662,754 km (0.101 R)
• M4: 5,239,217 km (0.076 R)
• M5: 6,883,746 km (0.113 R)
• M6: 8,105,961 km (0.087 R)
• M7: 11,354,927 km (0.067 R)
• M8: 13,696,283 km (0.072 R)
• M9: 15,445,382 km (0.12 R)
• M10: 18,640,044 km (0.053 R)
• M11: 23,241,675 km (0.119 R)
• M12: 27,325,846 km (0.111 R)
• M13: 31,107,531 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.9

Radius: 14.6

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 4.73 AU - 4.73 AU

Year: 6748 Days

Day: 7 Hours

Environment

Temp: -208 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,450,888 km

• M1: 200,162 km (0.055 R)
• M2: 1,315,564 km (0.055 R)
• M3: 1,778,270 km (0.111 R)
• M4: 2,289,745 km (0.119 R)
• M5: 4,578,293 km (0.099 R)
• M6: 5,761,762 km (0.12 R)
• M7: 6,409,670 km (0.107 R)
• M8: 8,928,450 km (0.083 R)
• M9: 11,804,170 km (0.05 R)
• M10: 15,077,670 km (0.054 R)
• M11: 15,952,519 km (0.064 R)
• M12: 17,296,655 km (0.119 R)
• M13: 22,599,152 km (0.119 R)
• M14: 23,979,043 km (0.097 R)
• M15: 28,897,073 km (0.075 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 299 - 19,984 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit