🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.46 AU - 0.6 AU

Year: 249 Days

Day: 14.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 9,223,111 km

• M1: 121,324 km (0.052 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.1

Radius: 14.1

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.68 AU - 1.08 AU

Year: 533 Days

Day: 7.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 9,223,111 km

• M1: 175,628 km (0.059 R)
• M2: 617,989 km (0.054 R)
• M3: 1,099,544 km (0.068 R)
• M4: 1,561,203 km (0.114 R)
• M5: 2,210,907 km (0.082 R)
• M6: 2,984,926 km (0.07 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.9

Radius: 10.1

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.1 AU - 1.44 AU

Year: 924 Days

Day: 10.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 9,223,111 km

• M1: 126,560 km (0.102 R)
• M2: 444,754 km (0.101 R)
• M3: 855,999 km (0.119 R)
• M4: 1,277,267 km (0.101 R)
• M5: 1,738,178 km (0.041 R)
• M6: 2,297,225 km (0.093 R)
• M7: 2,619,608 km (0.087 R)
• M8: 3,088,448 km (0.106 R)
• M9: 3,715,562 km (0.073 R)
• M10: 4,509,478 km (0.093 R)
• M11: 4,910,999 km (0.05 R)
• M12: 5,298,308 km (0.05 R)
• M13: 5,626,675 km (0.097 R)
• M14: 6,197,541 km (0.103 R)
• M15: 7,312,494 km (0.073 R)
• M16: 8,425,801 km (0.082 R)
• M17: 9,339,395 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 837.7

Radius: 9.9

Gravity: 8.55 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.22 AU - 1.48 AU

Year: 1013 Days

Day: 5.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 9,223,111 km

• M1: 123,119 km (0.118 R)
• M2: 620,083 km (0.093 R)
• M3: 1,061,397 km (0.031 R)
• M4: 1,744,311 km (0.087 R)
• M5: 2,141,494 km (0.11 R)
• M6: 2,851,036 km (0.079 R)
• M7: 3,647,794 km (0.119 R)
• M8: 4,303,033 km (0.101 R)
• M9: 4,732,678 km (0.06 R)
• M10: 5,512,382 km (0.081 R)
• M11: 6,330,234 km (0.079 R)
• M12: 7,451,171 km (0.114 R)
• M13: 7,809,458 km (0.064 R)
• M14: 8,368,355 km (0.063 R)
• M15: 8,868,611 km (0.109 R)
• M16: 9,271,178 km (0.086 R)
• M17: 9,806,888 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.7

Radius: 9

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.12 AU - 2.2 AU

Year: 2050 Days

Day: 10.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 9,223,111 km

• M1: 111,899 km (0.077 R)
• M2: 575,204 km (0.071 R)
• M3: 886,068 km (0.068 R)
• M4: 1,348,625 km (0.037 R)
• M5: 1,706,313 km (0.116 R)
• M6: 2,264,164 km (0.12 R)
• M7: 2,990,910 km (0.084 R)
• M8: 4,421,515 km (0.096 R)
• M9: 5,374,752 km (0.084 R)
• M10: 6,047,195 km (0.106 R)
• M11: 6,936,105 km (0.068 R)
• M12: 7,509,664 km (0.031 R)
• M13: 8,999,210 km (0.112 R)
• M14: 9,976,233 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.4

Radius: 10

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 2.09 AU - 2.37 AU

Year: 2150 Days

Day: 8.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 9,223,111 km

• M1: 128,355 km (0.093 R)
• M2: 532,868 km (0.041 R)
• M3: 1,492,089 km (0.117 R)
• M4: 1,823,748 km (0.114 R)
• M5: 3,587,806 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.6

Radius: 9.8

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 3.07 AU - 3.45 AU

Year: 3801 Days

Day: 12.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 9,223,111 km

• M1: 121,922 km (0.095 R)
• M2: 498,909 km (0.054 R)
• M3: 847,322 km (0.045 R)
• M4: 1,172,847 km (0.047 R)
• M5: 1,499,120 km (0.089 R)
• M6: 2,099,905 km (0.045 R)
• M7: 2,687,675 km (0.064 R)
• M8: 3,470,521 km (0.045 R)
• M9: 4,310,962 km (0.065 R)
• M10: 4,686,752 km (0.047 R)
• M11: 5,103,681 km (0.091 R)
• M12: 6,809,545 km (0.08 R)
• M13: 7,320,721 km (0.107 R)
• M14: 7,935,868 km (0.054 R)
• M15: 8,781,245 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 31.7

Radius: 13.5

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 3.07 AU - 3.59 AU

Year: 3924 Days

Day: 8 Hours

Environment

Temp: -210 °C

Axial Tilt: 62.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 9,223,111 km

• M1: 177,273 km (0.091 R)
• M2: 604,675 km (0.081 R)
• M3: 1,390,363 km (0.086 R)
• M4: 1,853,667 km (0.073 R)
• M5: 2,453,704 km (0.101 R)
• M6: 3,837,335 km (0.109 R)
• M7: 5,867,378 km (0.106 R)
• M8: 8,406,802 km (0.075 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 155 - 11,314 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit