🌌 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: 3.78

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.44 AU - 0.66 AU

Year: 268 Days

Day: 19.3 Hours

Environment

Temp: -118 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 511.6

Radius: 11.5

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.9 AU - 1.06 AU

Year: 636 Days

Day: 6 Hours

Environment

Temp: -154 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 26,402,346 km

• M1: 147,504 km (0.069 R)
• M2: 509,680 km (0.096 R)
• M3: 908,059 km (0.059 R)
• M4: 1,266,496 km (0.056 R)
• M5: 1,638,994 km (0.118 R)
• M6: 2,166,776 km (0.076 R)
• M7: 2,677,054 km (0.034 R)
• M8: 3,452,420 km (0.111 R)
• M9: 4,067,267 km (0.066 R)
• M10: 4,506,785 km (0.072 R)
• M11: 5,125,522 km (0.05 R)
• M12: 5,604,086 km (0.072 R)
• M13: 6,377,806 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 41.9

Radius: 8.5

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.26 AU - 1.5 AU

Year: 1063 Days

Day: 10.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 26,402,346 km

• M1: 105,766 km (0.098 R)
• M2: 425,307 km (0.071 R)
• M3: 994,078 km (0.118 R)
• M4: 1,267,244 km (0.088 R)
• M5: 1,535,772 km (0.109 R)
• M6: 2,074,922 km (0.065 R)
• M7: 2,941,842 km (0.114 R)
• M8: 3,484,434 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522

Radius: 10

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.57 AU - 1.79 AU

Year: 1428 Days

Day: 10.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 26,402,346 km

• M1: 124,465 km (0.108 R)
• M2: 457,021 km (0.102 R)
• M3: 910,901 km (0.09 R)
• M4: 1,377,348 km (0.06 R)
• M5: 1,713,494 km (0.042 R)
• M6: 2,062,057 km (0.046 R)
• M7: 2,446,374 km (0.102 R)
• M8: 3,014,846 km (0.059 R)
• M9: 3,375,826 km (0.1 R)
• M10: 4,941,517 km (0.079 R)
• M11: 5,466,605 km (0.099 R)
• M12: 6,095,814 km (0.094 R)
• M13: 6,486,564 km (0.078 R)
• M14: 8,386,756 km (0.096 R)
• M15: 10,307,443 km (0.049 R)
• M16: 10,664,832 km (0.063 R)
• M17: 11,165,686 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 873.2

Radius: 13.1

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.19 AU - 3.25 AU

Year: 3790 Days

Day: 13.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 26,402,346 km

• M1: 163,959 km (0.095 R)
• M2: 622,178 km (0.032 R)
• M3: 1,066,334 km (0.104 R)
• M4: 1,907,672 km (0.086 R)
• M5: 2,359,607 km (0.029 R)
• M6: 3,647,645 km (0.079 R)
• M7: 4,838,743 km (0.1 R)
• M8: 5,607,826 km (0.059 R)
• M9: 7,189,674 km (0.078 R)
• M10: 9,285,689 km (0.079 R)
• M11: 10,388,974 km (0.053 R)
• M12: 11,441,544 km (0.025 R)
• M13: 13,251,828 km (0.108 R)
• M14: 15,972,265 km (0.105 R)
• M15: 20,891,043 km (0.102 R)
• M16: 25,474,124 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.2

Radius: 15

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 3.01 AU - 3.79 AU

Year: 4113 Days

Day: 5.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,402,346 km

• M1: 190,139 km (0.037 R)
• M2: 689,497 km (0.1 R)
• M3: 1,191,248 km (0.108 R)
• M4: 2,427,824 km (0.054 R)
• M5: 2,905,789 km (0.061 R)
• M6: 3,889,245 km (0.076 R)
• M7: 7,424,692 km (0.111 R)
• M8: 8,169,241 km (0.052 R)
• M9: 8,760,003 km (0.039 R)
• M10: 9,530,880 km (0.106 R)
• M11: 10,378,951 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.6

Radius: 10.6

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 5.49 AU - 5.87 AU

Year: 8880 Days

Day: 5.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 26,402,346 km

• M1: 166,802 km (0.102 R)
• M2: 519,105 km (0.106 R)
• M3: 1,099,844 km (0.038 R)
• M4: 2,307,697 km (0.062 R)
• M5: 3,417,863 km (0.107 R)
• M6: 3,879,073 km (0.106 R)
• M7: 5,026,339 km (0.119 R)
• M8: 7,120,559 km (0.086 R)
• M9: 9,163,917 km (0.04 R)
• M10: 9,701,123 km (0.08 R)
• M11: 12,755,313 km (0.074 R)
• M12: 19,533,443 km (0.035 R)
• M13: 22,698,934 km (0.068 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 93.8

Radius: 3.8

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 5.82 AU - 7.32 AU

Year: 11047 Days

Day: 20.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 26,402,346 km

• M1: 49,218 km (0.12 R)
• M2: 298,298 km (0.059 R)
• M3: 577,597 km (0.097 R)
• M4: 1,101,489 km (0.099 R)
• M5: 1,671,457 km (0.076 R)
• M6: 1,917,396 km (0.11 R)
• M7: 2,186,822 km (0.106 R)
• M8: 2,307,697 km (0.11 R)
• M9: 3,282,626 km (0.085 R)
• M10: 3,860,971 km (0.11 R)
• M11: 4,197,267 km (0.059 R)
• M12: 5,768,494 km (0.05 R)
• M13: 11,165,835 km (0.112 R)
• M14: 12,410,340 km (0.086 R)
• M15: 12,602,274 km (0.107 R)
• M16: 12,893,840 km (0.09 R)
• M17: 14,525,504 km (0.092 R)
• M18: 15,445,980 km (0.111 R)
• M19: 16,289,712 km (0.108 R)
• M20: 16,869,105 km (0.119 R)
• M21: 17,946,359 km (0.095 R)
• M22: 20,170,730 km (0.071 R)
• M23: 21,041,689 km (0.069 R)
• M24: 21,659,079 km (0.107 R)
• M25: 22,007,343 km (0.099 R)
• M26: 22,217,977 km (0.085 R)
• M27: 23,952,414 km (0.066 R)
• M28: 25,080,981 km (0.116 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: 374 - 17,405 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit