🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.82

Radius: 0.92

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.54 AU - 0.62 AU

Year: 281 Days

Day: 32.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 29.2 °

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: 564.3

Radius: 10.8

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.77 AU - 1.15 AU

Year: 598 Days

Day: 12.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 18,339,828 km

• M1: 134,339 km (0.117 R)
• M2: 540,198 km (0.085 R)
• M3: 917,334 km (0.101 R)
• M4: 1,298,659 km (0.086 R)
• M5: 2,053,680 km (0.051 R)
• M6: 2,535,534 km (0.115 R)
• M7: 3,307,011 km (0.116 R)
• M8: 3,889,993 km (0.096 R)
• M9: 4,286,577 km (0.106 R)
• M10: 4,663,414 km (0.075 R)
• M11: 5,432,198 km (0.111 R)
• M12: 5,874,409 km (0.063 R)
• M13: 6,751,202 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 912

Radius: 8.2

Gravity: 13.56 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.97 AU - 2.05 AU

Year: 1812 Days

Day: 6.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 18,339,828 km

• M1: 106,364 km (0.091 R)
• M2: 364,271 km (0.111 R)
• M3: 662,270 km (0.119 R)
• M4: 1,112,859 km (0.09 R)
• M5: 1,492,987 km (0.069 R)
• M6: 1,778,569 km (0.116 R)
• M7: 2,149,871 km (0.077 R)
• M8: 2,489,009 km (0.092 R)
• M9: 2,744,672 km (0.072 R)
• M10: 3,033,546 km (0.097 R)
• M11: 4,318,442 km (0.102 R)
• M12: 4,818,099 km (0.059 R)
• M13: 5,355,604 km (0.117 R)
• M14: 5,687,412 km (0.078 R)
• M15: 6,236,436 km (0.115 R)
• M16: 8,004,982 km (0.103 R)
• M17: 9,020,901 km (0.059 R)
• M18: 9,321,443 km (0.088 R)
• M19: 12,748,731 km (0.103 R)
• M20: 13,127,662 km (0.104 R)
• M21: 15,800,976 km (0.045 R)
• M22: 16,140,563 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.1

Radius: 11

Gravity: 5.65 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 2.66 AU - 3.86 AU

Year: 3742 Days

Day: 6.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 18,339,828 km

• M1: 139,874 km (0.039 R)
• M2: 523,293 km (0.112 R)
• M3: 1,143,676 km (0.118 R)
• M4: 1,570,329 km (0.065 R)
• M5: 1,982,321 km (0.043 R)
• M6: 3,028,758 km (0.081 R)
• M7: 3,736,207 km (0.097 R)
• M8: 4,342,228 km (0.081 R)
• M9: 4,741,355 km (0.115 R)
• M10: 8,439,713 km (0.052 R)
• M11: 9,368,267 km (0.03 R)
• M12: 10,612,772 km (0.113 R)
• M13: 13,232,231 km (0.088 R)
• M14: 13,823,741 km (0.103 R)
• M15: 14,381,292 km (0.11 R)
• M16: 17,514,021 km (0.044 R)
• M17: 18,408,616 km (0.112 R)
• M18: 19,458,943 km (0.116 R)
• M19: 19,966,828 km (0.063 R)
• M20: 20,418,464 km (0.075 R)
• M21: 21,950,645 km (0.055 R)
• M22: 24,135,073 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743.4

Radius: 9.7

Gravity: 7.9 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 4.87 AU - 5.19 AU

Year: 7173 Days

Day: 5.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 18,339,828 km

• M1: 121,773 km (0.041 R)
• M2: 495,618 km (0.1 R)
• M3: 1,446,611 km (0.097 R)
• M4: 1,971,850 km (0.087 R)
• M5: 3,778,543 km (0.086 R)
• M6: 4,693,633 km (0.074 R)
• M7: 9,318,302 km (0.087 R)
• M8: 9,866,428 km (0.026 R)
• M9: 12,276,300 km (0.084 R)
• M10: 13,502,105 km (0.093 R)
• M11: 16,456,963 km (0.1 R)
• M12: 18,155,048 km (0.065 R)
• M13: 20,267,520 km (0.078 R)
• M14: 27,767,310 km (0.047 R)
• M15: 28,998,051 km (0.073 R)
• M16: 30,861,592 km (0.111 R)
• M17: 36,704,286 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.3

Radius: 13.1

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 4.75 AU - 7.09 AU

Year: 9158 Days

Day: 9.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 18,339,828 km

• M1: 163,062 km (0.093 R)
• M2: 655,239 km (0.05 R)
• M3: 1,128,417 km (0.116 R)
• M4: 1,975,889 km (0.091 R)
• M5: 2,871,382 km (0.068 R)
• M6: 4,121,721 km (0.083 R)
• M7: 6,016,078 km (0.112 R)
• M8: 7,304,266 km (0.075 R)
• M9: 8,013,659 km (0.115 R)
• M10: 10,119,698 km (0.08 R)
• M11: 11,041,669 km (0.091 R)
• M12: 11,564,065 km (0.049 R)
• M13: 13,231,184 km (0.11 R)
• M14: 13,774,972 km (0.093 R)
• M15: 14,859,108 km (0.119 R)
• M16: 15,796,787 km (0.111 R)
• M17: 18,119,892 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 15.4

Radius: 5.6

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 7.24 AU - 9.78 AU

Year: 15784 Days

Day: 22.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 18,339,828 km

• M1: 92,003 km (0.081 R)
• M2: 714,330 km (0.114 R)
• M3: 1,768,097 km (0.101 R)
• M4: 2,450,712 km (0.08 R)
• M5: 3,634,331 km (0.088 R)
• M6: 4,594,749 km (0.049 R)
• M7: 9,779,213 km (0.119 R)
• M8: 18,121,388 km (0.117 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 165 - 14,063 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit