🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.55 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.04 AU - 1.16 AU

Year: 426 Days

Day: 14.1 Hours

Environment

Temp: 14 °C

Axial Tilt: 35.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 2.96 AU - 3.12 AU

Year: 1956 Days

Day: 21.5 Hours

Environment

Temp: -104 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 59,386,431 km

• M1: 313,408 km (0.106 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 2.88 AU - 3.58 AU

Year: 2142 Days

Day: 19.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 29.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 59,386,431 km

• M1: 62,382 km (0.104 R)
• M2: 245,939 km (0.079 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.96

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 3.27 AU - 3.31 AU

Year: 2202 Days

Day: 21.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 4.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.12

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.7 AU - 4.02 AU

Year: 2272 Days

Day: 37.5 Hours

Environment

Temp: -112 °C

Axial Tilt: 40 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 3.97 AU - 4.21 AU

Year: 3052 Days

Day: 29.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 3.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.2

Radius: 13.6

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 5.61 AU - 8.63 AU

Year: 7010 Days

Day: 13.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 59,386,431 km

• M1: 169,345 km (0.086 R)
• M2: 638,484 km (0.118 R)
• M3: 1,168,210 km (0.062 R)
• M4: 1,774,231 km (0.118 R)
• M5: 2,218,088 km (0.108 R)
• M6: 2,874,373 km (0.092 R)
• M7: 3,801,282 km (0.095 R)
• M8: 4,469,386 km (0.098 R)
• M9: 5,778,667 km (0.118 R)
• M10: 6,279,221 km (0.12 R)
• M11: 6,808,648 km (0.119 R)
• M12: 9,594,011 km (0.104 R)
• M13: 10,737,088 km (0.108 R)
• M14: 12,953,530 km (0.097 R)
• M15: 13,581,243 km (0.092 R)
• M16: 14,836,070 km (0.088 R)
• M17: 15,270,951 km (0.117 R)
• M18: 15,971,817 km (0.064 R)
• M19: 16,694,075 km (0.094 R)
• M20: 18,774,682 km (0.114 R)
• M21: 19,877,518 km (0.068 R)
• M22: 20,406,795 km (0.066 R)
• M23: 21,100,929 km (0.089 R)
• M24: 23,697,799 km (0.064 R)
• M25: 24,293,049 km (0.107 R)
• M26: 27,606,791 km (0.114 R)
• M27: 35,337,710 km (0.088 R)
• M28: 35,891,820 km (0.081 R)
• M29: 38,984,906 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980

Radius: 11.2

Gravity: 7.81 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 6.29 AU - 7.95 AU

Year: 7010 Days

Day: 13.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 59,386,431 km

• M1: 142,716 km (0.115 R)
• M2: 947,852 km (0.078 R)
• M3: 1,356,404 km (0.088 R)
• M4: 2,639,804 km (0.111 R)
• M5: 3,264,076 km (0.043 R)
• M6: 4,896,189 km (0.115 R)
• M7: 5,545,443 km (0.057 R)
• M8: 6,216,390 km (0.05 R)
• M9: 7,284,369 km (0.074 R)
• M10: 9,087,622 km (0.117 R)
• M11: 10,510,447 km (0.117 R)
• M12: 10,862,900 km (0.109 R)
• M13: 11,538,334 km (0.054 R)
• M14: 15,601,861 km (0.101 R)
• M15: 16,260,690 km (0.12 R)
• M16: 16,664,904 km (0.104 R)
• M17: 18,787,099 km (0.037 R)
• M18: 19,307,251 km (0.095 R)
• M19: 19,836,827 km (0.107 R)
• M20: 22,299,657 km (0.117 R)
• M21: 23,135,759 km (0.11 R)
• M22: 23,647,384 km (0.051 R)
• M23: 24,079,572 km (0.1 R)
• M24: 31,940,641 km (0.063 R)
• M25: 32,362,807 km (0.098 R)
• M26: 33,760,499 km (0.102 R)
• M27: 34,198,522 km (0.09 R)
• M28: 41,233,212 km (0.057 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 139.3

Radius: 6.1

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 18.99 AU - 19.03 AU

Year: 30581 Days

Day: 22.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 59,386,431 km

• M1: 120,576 km (0.071 R)
• M2: 816,505 km (0.03 R)
• M3: 1,537,417 km (0.083 R)
• M4: 2,285,706 km (0.063 R)
• M5: 4,284,483 km (0.093 R)
• M6: 6,352,374 km (0.118 R)
• M7: 10,325,245 km (0.117 R)
• M8: 15,478,443 km (0.111 R)
• M9: 24,600,472 km (0.042 R)
• M10: 26,629,019 km (0.117 R)
• M11: 30,102,532 km (0.106 R)
• M12: 32,897,619 km (0.1 R)
• M13: 53,872,886 km (0.027 R)
• M14: 55,048,426 km (0.085 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 245 - 11,061 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit