🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.42 AU - 0.62 AU

Year: 242 Days

Day: 23.6 Hours

Environment

Temp: -127 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.4

Radius: 10.5

Gravity: 7.37 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.64 AU - 0.78 AU

Year: 386 Days

Day: 13.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,078,635 km

• M1: 130,599 km (0.073 R)
• M2: 477,217 km (0.047 R)
• M3: 826,379 km (0.091 R)
• M4: 1,312,422 km (0.108 R)
• M5: 1,774,680 km (0.05 R)
• M6: 2,618,412 km (0.071 R)
• M7: 3,289,657 km (0.108 R)
• M8: 3,722,743 km (0.089 R)
• M9: 4,125,760 km (0.112 R)
• M10: 4,943,611 km (0.09 R)
• M11: 5,530,035 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 410.7

Radius: 14.8

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.84 AU - 0.86 AU

Year: 506 Days

Day: 9.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,078,635 km

• M1: 185,202 km (0.063 R)
• M2: 645,664 km (0.06 R)
• M3: 1,112,709 km (0.113 R)
• M4: 1,686,118 km (0.079 R)
• M5: 2,204,175 km (0.105 R)
• M6: 2,691,565 km (0.058 R)
• M7: 3,251,510 km (0.105 R)
• M8: 3,740,545 km (0.104 R)
• M9: 4,212,078 km (0.117 R)
• M10: 4,898,433 km (0.082 R)
• M11: 5,417,836 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 532.7

Radius: 11.6

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.79 AU - 1.19 AU

Year: 636 Days

Day: 5.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,078,635 km

• M1: 144,212 km (0.087 R)
• M2: 506,987 km (0.106 R)
• M3: 881,431 km (0.119 R)
• M4: 1,326,634 km (0.118 R)
• M5: 1,744,461 km (0.116 R)
• M6: 2,544,510 km (0.07 R)
• M7: 3,000,185 km (0.039 R)
• M8: 3,626,851 km (0.104 R)
• M9: 4,504,541 km (0.097 R)
• M10: 5,059,400 km (0.108 R)
• M11: 5,571,025 km (0.063 R)
• M12: 5,949,507 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.3

Radius: 11.3

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 2.37 AU - 2.83 AU

Year: 2707 Days

Day: 8.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 36,078,635 km

• M1: 140,472 km (0.1 R)
• M2: 511,026 km (0.093 R)
• M3: 1,109,268 km (0.105 R)
• M4: 1,593,367 km (0.097 R)
• M5: 2,278,824 km (0.054 R)
• M6: 2,951,865 km (0.079 R)
• M7: 3,360,417 km (0.115 R)
• M8: 4,007,278 km (0.052 R)
• M9: 4,714,577 km (0.027 R)
• M10: 5,953,995 km (0.102 R)
• M11: 6,506,610 km (0.09 R)
• M12: 7,175,761 km (0.088 R)
• M13: 9,561,398 km (0.119 R)
• M14: 14,065,641 km (0.069 R)
• M15: 14,910,719 km (0.085 R)
• M16: 15,322,562 km (0.08 R)
• M17: 15,789,307 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458.3

Radius: 14.2

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 3.01 AU - 4.05 AU

Year: 4282 Days

Day: 9.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 36,078,635 km

• M1: 176,675 km (0.093 R)
• M2: 706,700 km (0.107 R)
• M3: 1,326,185 km (0.118 R)
• M4: 2,056,223 km (0.117 R)
• M5: 2,538,377 km (0.107 R)
• M6: 4,088,510 km (0.069 R)
• M7: 4,531,768 km (0.1 R)
• M8: 6,172,857 km (0.088 R)
• M9: 6,669,073 km (0.09 R)
• M10: 7,223,632 km (0.108 R)
• M11: 9,411,352 km (0.108 R)
• M12: 10,432,208 km (0.038 R)
• M13: 11,395,618 km (0.097 R)
• M14: 15,109,235 km (0.118 R)
• M15: 17,816,508 km (0.105 R)
• M16: 18,406,372 km (0.074 R)
• M17: 19,377,263 km (0.082 R)
• M18: 22,495,780 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.3

Radius: 10.5

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 3.97 AU - 4.33 AU

Year: 5459 Days

Day: 10.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 36,078,635 km

• M1: 133,142 km (0.084 R)
• M2: 731,384 km (0.074 R)
• M3: 1,210,696 km (0.085 R)
• M4: 2,235,441 km (0.113 R)
• M5: 2,694,706 km (0.102 R)
• M6: 3,241,636 km (0.107 R)
• M7: 3,734,112 km (0.078 R)
• M8: 4,590,261 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 830.8

Radius: 5

Gravity: 33.23 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 5.58 AU - 8.32 AU

Year: 11830 Days

Day: 20.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 36,078,635 km

• M1: 62,233 km (0.079 R)
• M2: 258,804 km (0.105 R)
• M3: 453,880 km (0.047 R)
• M4: 1,125,126 km (0.1 R)
• M5: 1,329,476 km (0.11 R)
• M6: 1,604,288 km (0.112 R)
• M7: 2,004,761 km (0.072 R)
• M8: 2,704,879 km (0.047 R)
• M9: 2,931,819 km (0.091 R)
• M10: 3,147,090 km (0.087 R)
• M11: 3,502,685 km (0.12 R)
• M12: 5,767,896 km (0.056 R)
• M13: 6,740,730 km (0.053 R)
• M14: 6,989,661 km (0.096 R)
• M15: 9,006,091 km (0.093 R)
• M16: 10,254,784 km (0.095 R)
• M17: 10,418,594 km (0.1 R)
• M18: 10,807,549 km (0.104 R)
• M19: 11,438,403 km (0.102 R)
• M20: 16,038,986 km (0.056 R)
• M21: 17,163,812 km (0.099 R)
• M22: 30,981,569 km (0.069 R)
• M23: 32,017,235 km (0.075 R)
• M24: 34,279,006 km (0.103 R)
• M25: 35,386,778 km (0.081 R)
• M26: 36,264,618 km (0.118 R)
• M27: 39,786,750 km (0.064 R)
• M28: 54,646,307 km (0.095 R)
• M29: 55,313,962 km (0.112 R)
• M30: 56,665,729 km (0.036 R)
• M31: 57,006,961 km (0.031 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 181.6

Radius: 7.1

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 5.91 AU - 8.65 AU

Year: 12683 Days

Day: 22.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 36,078,635 km

• M1: 88,861 km (0.113 R)
• M2: 416,929 km (0.075 R)
• M3: 750,533 km (0.106 R)
• M4: 3,591,396 km (0.085 R)
• M5: 6,894,816 km (0.108 R)
• M6: 7,293,644 km (0.118 R)
• M7: 7,631,287 km (0.12 R)
• M8: 8,058,239 km (0.099 R)
• M9: 8,459,909 km (0.109 R)
• M10: 9,087,622 km (0.051 R)
• M11: 10,864,396 km (0.118 R)
• M12: 12,645,807 km (0.114 R)
• M13: 14,672,410 km (0.096 R)
• M14: 15,515,992 km (0.115 R)
• M15: 15,949,676 km (0.093 R)
• M16: 16,455,167 km (0.108 R)
• M17: 18,240,319 km (0.102 R)
• M18: 20,077,829 km (0.105 R)
• M19: 22,583,145 km (0.103 R)
• M20: 22,900,442 km (0.098 R)
• M21: 23,706,475 km (0.106 R)
• M22: 27,299,068 km (0.062 R)
• M23: 29,130,894 km (0.107 R)
• M24: 34,169,949 km (0.078 R)
• M25: 35,009,642 km (0.101 R)
• M26: 35,541,462 km (0.12 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 393 - 15,005 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit