🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.41 AU - 0.69 AU

Year: 268 Days

Day: 26.2 Hours

Environment

Temp: -115 °C

Axial Tilt: 20.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 492.8

Radius: 12.6

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.64 AU - 0.96 AU

Year: 469 Days

Day: 7.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 59,032,335 km

• M1: 156,779 km (0.114 R)
• M2: 685,457 km (0.103 R)
• M3: 1,238,670 km (0.088 R)
• M4: 1,933,403 km (0.101 R)
• M5: 2,430,068 km (0.038 R)
• M6: 2,824,857 km (0.107 R)
• M7: 3,342,016 km (0.101 R)
• M8: 4,414,334 km (0.085 R)
• M9: 4,992,829 km (0.115 R)
• M10: 5,556,364 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.5

Radius: 15

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.95 AU - 1.06 AU

Year: 656 Days

Day: 11.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 59,032,335 km

• M1: 187,745 km (0.065 R)
• M2: 707,897 km (0.073 R)
• M3: 1,206,507 km (0.078 R)
• M4: 2,435,753 km (0.116 R)
• M5: 2,990,162 km (0.064 R)
• M6: 3,491,315 km (0.05 R)
• M7: 4,004,137 km (0.11 R)
• M8: 5,345,730 km (0.097 R)
• M9: 5,854,513 km (0.053 R)
• M10: 6,541,167 km (0.112 R)
• M11: 7,258,638 km (0.068 R)
• M12: 8,076,639 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.5

Radius: 13.1

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.98 AU - 1.12 AU

Year: 706 Days

Day: 6.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 59,032,335 km

• M1: 163,361 km (0.08 R)
• M2: 785,090 km (0.115 R)
• M3: 1,327,980 km (0.098 R)
• M4: 1,778,270 km (0.084 R)
• M5: 2,233,646 km (0.083 R)
• M6: 2,711,461 km (0.112 R)
• M7: 3,182,246 km (0.083 R)
• M8: 4,006,530 km (0.049 R)
• M9: 4,605,221 km (0.118 R)
• M10: 6,936,105 km (0.056 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 694.5

Radius: 12.1

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.2 AU - 1.3 AU

Year: 917 Days

Day: 13.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 59,032,335 km

• M1: 150,495 km (0.088 R)
• M2: 630,854 km (0.095 R)
• M3: 1,190,201 km (0.104 R)
• M4: 1,983,219 km (0.11 R)
• M5: 2,481,529 km (0.057 R)
• M6: 2,884,397 km (0.077 R)
• M7: 3,514,054 km (0.101 R)
• M8: 4,250,076 km (0.104 R)
• M9: 4,994,325 km (0.068 R)
• M10: 5,388,366 km (0.042 R)
• M11: 5,843,891 km (0.089 R)
• M12: 6,719,936 km (0.105 R)
• M13: 7,248,615 km (0.101 R)
• M14: 7,879,619 km (0.072 R)
• M15: 8,679,519 km (0.1 R)
• M16: 9,113,053 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.8

Radius: 11.8

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.54 AU - 1.68 AU

Year: 1340 Days

Day: 12.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 59,032,335 km

• M1: 147,055 km (0.072 R)
• M2: 657,483 km (0.094 R)
• M3: 1,140,235 km (0.104 R)
• M4: 2,255,936 km (0.083 R)
• M5: 2,860,610 km (0.111 R)
• M6: 3,429,531 km (0.071 R)
• M7: 4,354,794 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.6

Radius: 13.3

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.78 AU - 2.16 AU

Year: 1814 Days

Day: 9.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 59,032,335 km

• M1: 165,455 km (0.063 R)
• M2: 591,510 km (0.071 R)
• M3: 1,061,546 km (0.116 R)
• M4: 1,532,630 km (0.071 R)
• M5: 2,014,784 km (0.059 R)
• M6: 2,689,171 km (0.052 R)
• M7: 3,542,029 km (0.067 R)
• M8: 4,586,970 km (0.088 R)
• M9: 5,120,286 km (0.101 R)
• M10: 5,694,593 km (0.088 R)
• M11: 6,288,197 km (0.053 R)
• M12: 8,756,861 km (0.087 R)
• M13: 9,362,433 km (0.103 R)
• M14: 11,813,145 km (0.117 R)
• M15: 12,290,811 km (0.06 R)
• M16: 13,050,769 km (0.076 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.4

Radius: 9

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 2.33 AU - 2.57 AU

Year: 2516 Days

Day: 6.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 59,032,335 km

• M1: 188,194 km (0.097 R)
• M2: 499,058 km (0.077 R)
• M3: 782,995 km (0.092 R)
• M4: 1,297,014 km (0.106 R)
• M5: 1,920,837 km (0.093 R)
• M6: 3,490,268 km (0.078 R)
• M7: 4,804,934 km (0.09 R)
• M8: 5,797,366 km (0.081 R)
• M9: 6,492,398 km (0.094 R)
• M10: 7,342,712 km (0.089 R)
• M11: 9,352,260 km (0.045 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 539

Radius: 13.7

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.59 AU - 3.57 AU

Year: 3546 Days

Day: 11.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 59,032,335 km

• M1: 170,392 km (0.117 R)
• M2: 851,511 km (0.089 R)
• M3: 1,302,848 km (0.089 R)
• M4: 1,859,202 km (0.054 R)
• M5: 2,311,736 km (0.052 R)
• M6: 2,887,389 km (0.077 R)
• M7: 3,653,778 km (0.057 R)
• M8: 4,159,270 km (0.059 R)
• M9: 5,991,544 km (0.116 R)
• M10: 8,077,387 km (0.094 R)
• M11: 8,693,282 km (0.1 R)
• M12: 9,903,977 km (0.074 R)
• M13: 11,992,065 km (0.102 R)
• M14: 12,523,287 km (0.113 R)
• M15: 13,585,431 km (0.096 R)
• M16: 17,751,583 km (0.105 R)
• M17: 21,451,587 km (0.095 R)

Asteroid Belt

Center: 5.11 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 10 - Ice Giant

Semi-Major Axis: 7.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 820.3

Radius: 5.6

Gravity: 26.16 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 6.66 AU - 7.6 AU

Year: 12489 Days

Day: 24.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 59,032,335 km

• M1: 74,350 km (0.114 R)
• M2: 402,119 km (0.064 R)
• M3: 844,630 km (0.054 R)
• M4: 1,179,430 km (0.091 R)
• M5: 1,912,609 km (0.112 R)
• M6: 2,820,668 km (0.096 R)
• M7: 3,203,938 km (0.032 R)
• M8: 3,434,468 km (0.11 R)
• M9: 3,758,946 km (0.104 R)
• M10: 6,549,844 km (0.05 R)
• M11: 11,573,938 km (0.107 R)
• M12: 12,240,995 km (0.098 R)
• M13: 15,309,996 km (0.056 R)
• M14: 16,113,187 km (0.114 R)
• M15: 23,386,186 km (0.11 R)
• M16: 23,577,372 km (0.052 R)
• M17: 24,944,547 km (0.04 R)
• M18: 25,749,085 km (0.119 R)
• M19: 30,258,563 km (0.092 R)
• M20: 41,917,323 km (0.119 R)
• M21: 43,196,834 km (0.06 R)
• M22: 43,629,172 km (0.113 R)
• M23: 44,795,886 km (0.106 R)
• M24: 47,343,837 km (0.105 R)
• M25: 47,803,401 km (0.097 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 476 - 14,758 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit