🌌 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: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.55 AU - 0.61 AU

Year: 285 Days

Day: 26.7 Hours

Environment

Temp: -120 °C

Axial Tilt: 33.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.48 AU - 0.76 AU

Year: 315 Days

Day: 17.9 Hours

Environment

Temp: -139 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 27,698,185 km

• M1: 39,793 km (0.087 R)
• M2: 184,005 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.6

Radius: 14.6

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.77 AU - 1.01 AU

Year: 542 Days

Day: 11.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,698,185 km

• M1: 181,612 km (0.11 R)
• M2: 713,432 km (0.073 R)
• M3: 1,404,874 km (0.036 R)
• M4: 2,369,630 km (0.09 R)
• M5: 3,011,854 km (0.119 R)
• M6: 3,494,756 km (0.074 R)
• M7: 4,186,197 km (0.082 R)
• M8: 5,454,338 km (0.069 R)
• M9: 6,863,401 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.3

Radius: 14.6

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.26 AU - 1.72 AU

Year: 1174 Days

Day: 8.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,698,185 km

• M1: 181,612 km (0.112 R)
• M2: 783,743 km (0.085 R)
• M3: 1,346,830 km (0.078 R)
• M4: 2,141,344 km (0.079 R)
• M5: 3,017,688 km (0.119 R)
• M6: 3,757,899 km (0.081 R)
• M7: 4,906,511 km (0.061 R)
• M8: 5,767,297 km (0.102 R)
• M9: 8,098,630 km (0.089 R)
• M10: 8,990,533 km (0.105 R)
• M11: 9,475,080 km (0.112 R)
• M12: 10,434,751 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.2

Radius: 14.5

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.92 AU - 3.12 AU

Year: 3389 Days

Day: 10.7 Hours

Environment

Temp: -201 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 27,698,185 km

• M1: 183,706 km (0.099 R)
• M2: 666,459 km (0.056 R)
• M3: 1,141,133 km (0.092 R)
• M4: 1,757,775 km (0.119 R)
• M5: 2,238,433 km (0.082 R)
• M6: 2,735,397 km (0.116 R)
• M7: 4,484,346 km (0.102 R)
• M8: 5,352,911 km (0.064 R)
• M9: 7,028,706 km (0.11 R)
• M10: 7,658,813 km (0.071 R)
• M11: 8,295,052 km (0.093 R)
• M12: 9,674,046 km (0.099 R)
• M13: 10,418,594 km (0.103 R)
• M14: 12,758,006 km (0.086 R)
• M15: 13,697,779 km (0.115 R)
• M16: 15,908,238 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.7

Radius: 13.7

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.43 AU - 3.93 AU

Year: 3661 Days

Day: 12 Hours

Environment

Temp: -200 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,698,185 km

• M1: 170,392 km (0.12 R)
• M2: 605,273 km (0.065 R)
• M3: 1,329,177 km (0.028 R)
• M4: 1,774,979 km (0.088 R)
• M5: 2,505,166 km (0.11 R)
• M6: 3,519,888 km (0.113 R)
• M7: 4,416,428 km (0.083 R)
• M8: 5,385,823 km (0.105 R)
• M9: 5,921,383 km (0.111 R)
• M10: 7,809,009 km (0.091 R)
• M11: 8,296,548 km (0.114 R)
• M12: 9,118,738 km (0.09 R)
• M13: 9,696,635 km (0.111 R)
• M14: 10,688,020 km (0.084 R)
• M15: 11,662,052 km (0.108 R)
• M16: 15,643,449 km (0.064 R)
• M17: 16,845,169 km (0.104 R)
• M18: 19,788,208 km (0.074 R)
• M19: 20,330,351 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.4

Radius: 9.3

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.89 AU - 4.49 AU

Year: 5538 Days

Day: 11.8 Hours

Environment

Temp: -205 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 27,698,185 km

• M1: 213,775 km (0.057 R)
• M2: 1,033,871 km (0.106 R)
• M3: 2,908,332 km (0.099 R)
• M4: 4,055,748 km (0.119 R)
• M5: 6,823,458 km (0.096 R)
• M6: 9,033,019 km (0.075 R)
• M7: 9,430,650 km (0.056 R)
• M8: 11,016,537 km (0.104 R)
• M9: 12,240,846 km (0.117 R)
• M10: 12,999,307 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.9

Radius: 9.4

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 4.32 AU - 4.42 AU

Year: 5898 Days

Day: 7.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 27,698,185 km

• M1: 116,836 km (0.094 R)
• M2: 414,536 km (0.035 R)
• M3: 1,153,848 km (0.064 R)
• M4: 1,678,638 km (0.092 R)
• M5: 2,131,321 km (0.051 R)
• M6: 2,854,477 km (0.118 R)
• M7: 3,401,706 km (0.061 R)
• M8: 4,040,040 km (0.08 R)
• M9: 4,340,433 km (0.073 R)
• M10: 4,934,785 km (0.111 R)
• M11: 5,638,793 km (0.074 R)
• M12: 6,164,330 km (0.11 R)
• M13: 7,832,047 km (0.093 R)
• M14: 8,599,484 km (0.117 R)
• M15: 9,138,336 km (0.118 R)
• M16: 10,114,162 km (0.114 R)
• M17: 12,905,958 km (0.114 R)
• M18: 13,819,103 km (0.102 R)
• M19: 14,505,010 km (0.114 R)
• M20: 15,102,803 km (0.085 R)
• M21: 19,430,071 km (0.091 R)
• M22: 21,804,937 km (0.07 R)
• M23: 23,615,370 km (0.111 R)
• M24: 25,289,520 km (0.054 R)
• M25: 25,838,544 km (0.106 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: 260 - 19,104 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit