🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.51 AU - 0.77 AU

Year: 336 Days

Day: 46.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,550,610 km

• M1: 69,713 km (0.084 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.54 AU - 0.8 AU

Year: 360 Days

Day: 19.6 Hours

Environment

Temp: -128 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,550,610 km

• M1: 328,517 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 541.5

Radius: 8.6

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.69 AU - 0.99 AU

Year: 505 Days

Day: 7.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,550,610 km

• M1: 109,954 km (0.116 R)
• M2: 517,010 km (0.065 R)
• M3: 819,796 km (0.079 R)
• M4: 1,477,129 km (0.09 R)
• M5: 2,035,728 km (0.081 R)
• M6: 2,497,985 km (0.12 R)
• M7: 2,865,248 km (0.078 R)
• M8: 3,315,388 km (0.103 R)
• M9: 4,105,714 km (0.102 R)
• M10: 4,501,550 km (0.047 R)
• M11: 4,891,701 km (0.118 R)
• M12: 5,337,054 km (0.096 R)
• M13: 5,705,812 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 166.9

Radius: 11.8

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.7 AU - 1.94 AU

Year: 1611 Days

Day: 7.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,550,610 km

• M1: 148,401 km (0.101 R)
• M2: 591,809 km (0.101 R)
• M3: 1,786,498 km (0.068 R)
• M4: 2,224,072 km (0.085 R)
• M5: 3,149,185 km (0.089 R)
• M6: 4,203,850 km (0.043 R)
• M7: 4,934,935 km (0.118 R)
• M8: 6,025,952 km (0.115 R)
• M9: 6,671,616 km (0.112 R)
• M10: 8,655,134 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.7

Radius: 10.3

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.97 AU - 3.17 AU

Year: 3529 Days

Day: 8.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 53,550,610 km

• M1: 128,205 km (0.064 R)
• M2: 617,091 km (0.107 R)
• M3: 961,166 km (0.092 R)
• M4: 1,378,694 km (0.094 R)
• M5: 1,953,449 km (0.115 R)
• M6: 2,792,843 km (0.109 R)
• M7: 3,776,748 km (0.118 R)
• M8: 6,246,758 km (0.085 R)
• M9: 6,617,312 km (0.118 R)
• M10: 7,371,136 km (0.101 R)
• M11: 8,350,104 km (0.104 R)
• M12: 9,085,527 km (0.094 R)
• M13: 10,604,993 km (0.101 R)
• M14: 10,928,124 km (0.104 R)
• M15: 11,257,988 km (0.057 R)
• M16: 12,243,239 km (0.072 R)
• M17: 13,851,416 km (0.08 R)
• M18: 16,874,191 km (0.093 R)
• M19: 17,371,006 km (0.091 R)
• M20: 19,637,563 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 270

Radius: 12.2

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 3.79 AU - 3.89 AU

Year: 4936 Days

Day: 9.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,550,610 km

• M1: 151,692 km (0.042 R)
• M2: 1,094,458 km (0.117 R)
• M3: 2,992,705 km (0.09 R)
• M4: 4,790,124 km (0.096 R)
• M5: 6,001,418 km (0.101 R)
• M6: 8,807,575 km (0.116 R)
• M7: 17,237,863 km (0.106 R)
• M8: 21,951,393 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.5

Radius: 9.7

Gravity: 9.34 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 4.76 AU - 6.5 AU

Year: 8763 Days

Day: 13.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 53,550,610 km

• M1: 120,725 km (0.076 R)
• M2: 1,280,857 km (0.088 R)
• M3: 2,689,919 km (0.084 R)
• M4: 3,570,004 km (0.103 R)
• M5: 5,381,484 km (0.096 R)
• M6: 6,925,783 km (0.11 R)
• M7: 7,694,716 km (0.11 R)
• M8: 8,035,051 km (0.109 R)
• M9: 8,884,019 km (0.069 R)
• M10: 9,402,077 km (0.106 R)
• M11: 11,078,171 km (0.095 R)
• M12: 11,846,207 km (0.069 R)
• M13: 12,708,040 km (0.066 R)
• M14: 13,796,813 km (0.09 R)
• M15: 14,363,939 km (0.073 R)
• M16: 14,750,649 km (0.073 R)
• M17: 15,276,935 km (0.118 R)
• M18: 17,290,671 km (0.088 R)
• M19: 18,932,059 km (0.113 R)
• M20: 22,869,026 km (0.11 R)
• M21: 24,751,417 km (0.11 R)
• M22: 27,026,651 km (0.065 R)
• M23: 33,769,027 km (0.106 R)
• M24: 35,967,966 km (0.088 R)
• M25: 39,884,139 km (0.076 R)
• M26: 40,520,678 km (0.088 R)
• M27: 46,698,471 km (0.028 R)
• M28: 47,405,620 km (0.076 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 931.3

Radius: 3.8

Gravity: 64.49 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 5.29 AU - 7.11 AU

Year: 10127 Days

Day: 16.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 53,550,610 km

• M1: 47,273 km (0.066 R)
• M2: 184,903 km (0.111 R)
• M3: 456,274 km (0.061 R)
• M4: 1,172,099 km (0.115 R)
• M5: 1,463,217 km (0.091 R)
• M6: 2,022,862 km (0.1 R)
• M7: 2,341,207 km (0.065 R)
• M8: 2,670,472 km (0.034 R)
• M9: 2,959,943 km (0.034 R)
• M10: 3,319,726 km (0.073 R)
• M11: 4,183,504 km (0.088 R)
• M12: 5,087,076 km (0.089 R)
• M13: 5,566,686 km (0.083 R)
• M14: 5,817,562 km (0.105 R)
• M15: 7,102,907 km (0.109 R)
• M16: 8,852,155 km (0.067 R)
• M17: 9,544,344 km (0.044 R)
• M18: 11,836,632 km (0.119 R)
• M19: 12,492,619 km (0.101 R)
• M20: 12,737,062 km (0.12 R)
• M21: 13,811,474 km (0.051 R)
• M22: 14,808,544 km (0.104 R)
• M23: 15,013,493 km (0.109 R)
• M24: 15,151,272 km (0.113 R)
• M25: 16,067,111 km (0.101 R)
• M26: 18,086,083 km (0.116 R)
• M27: 19,768,760 km (0.08 R)
• M28: 20,605,461 km (0.038 R)
• M29: 20,860,974 km (0.088 R)
• M30: 23,719,790 km (0.101 R)
• M31: 27,133,912 km (0.092 R)
• M32: 31,195,943 km (0.119 R)
• M33: 32,214,106 km (0.117 R)
• M34: 34,197,176 km (0.11 R)
• M35: 34,316,405 km (0.072 R)
• M36: 42,530,076 km (0.12 R)
• M37: 43,500,817 km (0.114 R)
• M38: 44,344,549 km (0.081 R)
• M39: 47,235,827 km (0.079 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 455 - 14,315 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit