🌌 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: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.45 AU - 0.65 AU

Year: 268 Days

Day: 28.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 19.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,563,597 km

• M1: 28,872 km (0.09 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.61 AU - 0.65 AU

Year: 328 Days

Day: 17.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 6.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.4

Radius: 10.4

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.68 AU - 0.72 AU

Year: 384 Days

Day: 10.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 73,563,597 km

• M1: 129,402 km (0.06 R)
• M2: 673,938 km (0.081 R)
• M3: 1,195,437 km (0.084 R)
• M4: 1,585,737 km (0.103 R)
• M5: 2,010,296 km (0.058 R)
• M6: 2,535,534 km (0.089 R)
• M7: 2,957,251 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.5

Radius: 9.3

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.26 AU - 1.98 AU

Year: 1353 Days

Day: 13.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,563,597 km

• M1: 116,088 km (0.06 R)
• M2: 464,950 km (0.091 R)
• M3: 775,964 km (0.072 R)
• M4: 1,441,375 km (0.116 R)
• M5: 1,744,311 km (0.117 R)
• M6: 2,296,028 km (0.07 R)
• M7: 2,737,791 km (0.053 R)
• M8: 3,076,031 km (0.084 R)
• M9: 3,372,385 km (0.067 R)
• M10: 4,428,546 km (0.094 R)
• M11: 4,719,813 km (0.099 R)
• M12: 5,953,995 km (0.091 R)
• M13: 6,352,374 km (0.092 R)
• M14: 6,679,395 km (0.078 R)
• M15: 7,343,759 km (0.091 R)
• M16: 8,486,986 km (0.054 R)
• M17: 8,830,613 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.7

Radius: 10.8

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 4.37 AU - 4.55 AU

Year: 6179 Days

Day: 14.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 73,563,597 km

• M1: 134,937 km (0.099 R)
• M2: 491,130 km (0.09 R)
• M3: 880,234 km (0.045 R)
• M4: 1,746,106 km (0.096 R)
• M5: 2,134,462 km (0.087 R)
• M6: 2,742,727 km (0.047 R)
• M7: 3,230,566 km (0.055 R)
• M8: 4,458,465 km (0.088 R)
• M9: 4,911,896 km (0.112 R)
• M10: 5,514,477 km (0.115 R)
• M11: 5,911,659 km (0.049 R)
• M12: 6,393,813 km (0.089 R)
• M13: 6,901,997 km (0.109 R)
• M14: 8,469,633 km (0.034 R)
• M15: 8,834,353 km (0.112 R)
• M16: 11,103,453 km (0.104 R)
• M17: 12,040,385 km (0.115 R)
• M18: 13,847,228 km (0.067 R)
• M19: 15,525,865 km (0.093 R)
• M20: 15,889,388 km (0.092 R)
• M21: 16,823,328 km (0.108 R)
• M22: 19,632,776 km (0.115 R)
• M23: 24,493,809 km (0.087 R)
• M24: 25,319,440 km (0.058 R)
• M25: 25,908,406 km (0.086 R)
• M26: 27,553,085 km (0.092 R)
• M27: 29,635,787 km (0.115 R)
• M28: 31,724,173 km (0.084 R)
• M29: 32,114,175 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190

Radius: 8.3

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 4.3 AU - 5.5 AU

Year: 7115 Days

Day: 7 Hours

Environment

Temp: -215 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 73,563,597 km

• M1: 103,522 km (0.114 R)
• M2: 570,267 km (0.09 R)
• M3: 1,052,870 km (0.109 R)
• M4: 1,453,942 km (0.073 R)
• M5: 1,863,840 km (0.073 R)
• M6: 3,734,711 km (0.079 R)
• M7: 5,356,053 km (0.098 R)
• M8: 5,959,530 km (0.073 R)
• M9: 6,486,264 km (0.05 R)
• M10: 6,823,159 km (0.119 R)
• M11: 7,268,961 km (0.08 R)
• M12: 11,386,492 km (0.11 R)
• M13: 11,877,622 km (0.043 R)
• M14: 12,382,814 km (0.105 R)
• M15: 13,436,133 km (0.096 R)
• M16: 15,448,374 km (0.089 R)
• M17: 15,774,946 km (0.103 R)
• M18: 17,301,443 km (0.12 R)
• M19: 19,868,093 km (0.119 R)
• M20: 23,598,915 km (0.116 R)
• M21: 24,250,862 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 969.1

Radius: 7.8

Gravity: 15.93 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 6.2 AU - 7.16 AU

Year: 11326 Days

Day: 17 Hours

Environment

Temp: -219 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 73,563,597 km

• M1: 97,388 km (0.037 R)
• M2: 388,805 km (0.088 R)
• M3: 669,002 km (0.097 R)
• M4: 1,009,038 km (0.096 R)
• M5: 1,310,926 km (0.073 R)
• M6: 1,610,720 km (0.056 R)
• M7: 2,175,602 km (0.07 R)
• M8: 2,912,072 km (0.071 R)
• M9: 3,694,319 km (0.108 R)
• M10: 4,299,144 km (0.119 R)
• M11: 4,577,844 km (0.118 R)
• M12: 6,352,524 km (0.042 R)
• M13: 7,091,089 km (0.04 R)
• M14: 7,393,276 km (0.115 R)
• M15: 9,288,083 km (0.099 R)
• M16: 9,597,900 km (0.097 R)
• M17: 10,793,337 km (0.069 R)
• M18: 12,268,671 km (0.117 R)
• M19: 12,516,704 km (0.11 R)
• M20: 13,215,925 km (0.1 R)
• M21: 16,801,935 km (0.051 R)
• M22: 17,417,680 km (0.082 R)
• M23: 18,369,422 km (0.116 R)
• M24: 20,289,959 km (0.105 R)
• M25: 21,076,545 km (0.111 R)
• M26: 23,558,523 km (0.11 R)
• M27: 24,623,361 km (0.102 R)
• M28: 24,919,265 km (0.118 R)
• M29: 25,217,563 km (0.105 R)
• M30: 30,094,454 km (0.111 R)
• M31: 30,887,921 km (0.117 R)
• M32: 37,743,842 km (0.095 R)
• M33: 42,083,676 km (0.086 R)
• M34: 49,043,568 km (0.097 R)
• M35: 52,876,714 km (0.101 R)
• M36: 53,865,257 km (0.106 R)
• M37: 57,422,395 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 593

Radius: 5.6

Gravity: 18.91 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 8.54 AU - 11.26 AU

Year: 20434 Days

Day: 18.2 Hours

Environment

Temp: -236 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 73,563,597 km

• M1: 69,862 km (0.114 R)
• M2: 280,047 km (0.074 R)
• M3: 470,336 km (0.064 R)
• M4: 820,694 km (0.109 R)
• M5: 1,516,174 km (0.047 R)
• M6: 1,788,891 km (0.095 R)
• M7: 2,477,939 km (0.117 R)
• M8: 2,907,584 km (0.118 R)
• M9: 3,672,927 km (0.112 R)
• M10: 5,322,543 km (0.054 R)
• M11: 5,632,210 km (0.12 R)
• M12: 7,946,190 km (0.102 R)
• M13: 11,514,249 km (0.099 R)
• M14: 11,901,408 km (0.101 R)
• M15: 13,184,958 km (0.118 R)
• M16: 15,865,153 km (0.117 R)
• M17: 16,669,541 km (0.066 R)
• M18: 17,248,485 km (0.119 R)
• M19: 17,670,201 km (0.045 R)
• M20: 18,887,629 km (0.107 R)
• M21: 20,346,208 km (0.057 R)
• M22: 20,816,993 km (0.082 R)
• M23: 25,712,732 km (0.106 R)
• M24: 26,041,848 km (0.094 R)
• M25: 29,013,909 km (0.078 R)
• M26: 30,827,484 km (0.07 R)
• M27: 41,337,632 km (0.107 R)
• M28: 42,092,502 km (0.112 R)
• M29: 43,164,820 km (0.091 R)
• M30: 47,142,777 km (0.102 R)
• M31: 47,471,294 km (0.052 R)
• M32: 53,290,352 km (0.083 R)
• M33: 53,646,694 km (0.101 R)
• M34: 55,270,130 km (0.039 R)
• M35: 71,597,092 km (0.108 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: 345 - 14,261 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit