🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.52 AU - 0.56 AU

Year: 252 Days

Day: 42.7 Hours

Environment

Temp: -115 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.16

Radius: 1.58

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.44 AU - 0.74 AU

Year: 288 Days

Day: 33.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.45

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.48 AU - 0.74 AU

Year: 303 Days

Day: 46.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 22.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.57 AU - 0.73 AU

Year: 333 Days

Day: 47 Hours

Environment

Temp: -142 °C

Axial Tilt: 9.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809.5

Radius: 9.4

Gravity: 9.16 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.89 AU - 1.15 AU

Year: 655 Days

Day: 11.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 12,869,826 km

• M1: 117,135 km (0.034 R)
• M2: 544,985 km (0.096 R)
• M3: 846,724 km (0.114 R)
• M4: 1,430,904 km (0.092 R)
• M5: 1,792,482 km (0.081 R)
• M6: 2,146,580 km (0.092 R)
• M7: 3,184,789 km (0.115 R)
• M8: 4,211,030 km (0.042 R)
• M9: 5,705,513 km (0.076 R)
• M10: 6,034,479 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 38.3

Radius: 13.1

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.09 AU - 1.57 AU

Year: 975 Days

Day: 14 Hours

Environment

Temp: -167 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 12,869,826 km

• M1: 163,062 km (0.104 R)
• M2: 1,075,609 km (0.077 R)
• M3: 1,511,387 km (0.083 R)
• M4: 3,117,021 km (0.074 R)
• M5: 3,558,485 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726.9

Radius: 8.7

Gravity: 9.6 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.04 AU - 1.64 AU

Year: 986 Days

Day: 6.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 12,869,826 km

• M1: 108,309 km (0.096 R)
• M2: 384,317 km (0.104 R)
• M3: 706,850 km (0.038 R)
• M4: 1,133,353 km (0.113 R)
• M5: 2,144,336 km (0.055 R)
• M6: 4,076,692 km (0.089 R)
• M7: 4,535,508 km (0.092 R)
• M8: 5,782,107 km (0.108 R)
• M9: 6,631,823 km (0.1 R)
• M10: 8,362,371 km (0.084 R)
• M11: 8,824,330 km (0.049 R)
• M12: 9,217,473 km (0.104 R)
• M13: 10,221,125 km (0.071 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.3

Radius: 9.8

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.52 AU - 3.5 AU

Year: 3320 Days

Day: 10.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 12,869,826 km

• M1: 121,922 km (0.084 R)
• M2: 444,006 km (0.104 R)
• M3: 805,734 km (0.105 R)
• M4: 1,158,935 km (0.1 R)
• M5: 1,636,152 km (0.062 R)
• M6: 1,949,260 km (0.104 R)
• M7: 2,535,385 km (0.115 R)
• M8: 3,528,864 km (0.066 R)
• M9: 4,151,790 km (0.099 R)
• M10: 4,763,196 km (0.115 R)
• M11: 5,145,120 km (0.103 R)
• M12: 5,898,494 km (0.119 R)
• M13: 6,697,646 km (0.045 R)
• M14: 7,370,986 km (0.089 R)
• M15: 8,267,676 km (0.11 R)
• M16: 10,381,793 km (0.083 R)
• M17: 10,700,586 km (0.093 R)
• M18: 11,135,766 km (0.042 R)
• M19: 12,712,528 km (0.102 R)
• M20: 13,036,706 km (0.103 R)
• M21: 13,659,482 km (0.114 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 117.9

Radius: 11.1

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 2.69 AU - 3.37 AU

Year: 3353 Days

Day: 6.7 Hours

Environment

Temp: -211 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 12,869,826 km

• M1: 138,079 km (0.109 R)
• M2: 536,009 km (0.083 R)
• M3: 940,671 km (0.075 R)
• M4: 1,856,958 km (0.05 R)
• M5: 2,326,396 km (0.095 R)
• M6: 2,915,662 km (0.036 R)
• M7: 3,306,412 km (0.063 R)
• M8: 3,865,310 km (0.085 R)
• M9: 5,152,300 km (0.103 R)
• M10: 6,041,510 km (0.118 R)
• M11: 7,470,618 km (0.107 R)
• M12: 8,349,656 km (0.106 R)
• M13: 8,725,894 km (0.05 R)
• M14: 9,326,978 km (0.113 R)
• M15: 11,614,779 km (0.096 R)
• M16: 12,379,673 km (0.105 R)
• M17: 12,755,612 km (0.029 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 277 - 15,500 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit