🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952

Radius: 10.8

Gravity: 8.16 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.64 AU - 0.72 AU

Year: 357 Days

Day: 5.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,433,662 km

• M1: 135,536 km (0.053 R)
• M2: 480,508 km (0.064 R)
• M3: 816,655 km (0.073 R)
• M4: 1,338,602 km (0.08 R)
• M5: 1,829,133 km (0.117 R)
• M6: 2,177,247 km (0.032 R)
• M7: 2,861,957 km (0.109 R)
• M8: 3,209,622 km (0.092 R)
• M9: 3,573,744 km (0.075 R)
• M10: 4,084,321 km (0.09 R)
• M11: 4,442,010 km (0.06 R)
• M12: 5,048,779 km (0.109 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.9

Radius: 8.8

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.66 AU - 0.72 AU

Year: 364 Days

Day: 9.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 28,433,662 km

• M1: 109,506 km (0.082 R)
• M2: 503,546 km (0.114 R)
• M3: 1,113,756 km (0.035 R)
• M4: 1,822,102 km (0.105 R)
• M5: 2,591,634 km (0.119 R)
• M6: 3,103,707 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.6

Radius: 12.6

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.23 AU - 1.93 AU

Year: 1263 Days

Day: 10.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 28,433,662 km

• M1: 156,629 km (0.103 R)
• M2: 563,386 km (0.036 R)
• M3: 997,967 km (0.067 R)
• M4: 1,393,654 km (0.114 R)
• M5: 1,858,754 km (0.102 R)
• M6: 2,754,695 km (0.116 R)
• M7: 3,323,167 km (0.03 R)
• M8: 4,168,545 km (0.079 R)
• M9: 4,642,471 km (0.108 R)
• M10: 5,074,509 km (0.102 R)
• M11: 6,934,460 km (0.109 R)
• M12: 7,782,979 km (0.09 R)
• M13: 8,313,602 km (0.094 R)
• M14: 8,925,009 km (0.083 R)
• M15: 9,898,442 km (0.116 R)
• M16: 11,006,963 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.2

Radius: 9

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.97 AU - 3.21 AU

Year: 2650 Days

Day: 8.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 28,433,662 km

• M1: 112,348 km (0.045 R)
• M2: 616,194 km (0.093 R)
• M3: 1,010,534 km (0.117 R)
• M4: 1,304,194 km (0.084 R)
• M5: 1,779,167 km (0.08 R)
• M6: 2,643,843 km (0.066 R)
• M7: 3,248,518 km (0.09 R)
• M8: 3,669,037 km (0.092 R)
• M9: 5,033,370 km (0.111 R)
• M10: 5,421,726 km (0.103 R)
• M11: 5,961,774 km (0.089 R)
• M12: 6,509,003 km (0.043 R)
• M13: 6,853,078 km (0.097 R)
• M14: 7,239,639 km (0.103 R)
• M15: 7,798,836 km (0.083 R)
• M16: 8,588,863 km (0.113 R)
• M17: 8,898,680 km (0.098 R)
• M18: 9,613,608 km (0.119 R)
• M19: 10,796,927 km (0.105 R)
• M20: 11,485,526 km (0.048 R)
• M21: 12,905,659 km (0.115 R)
• M22: 13,774,673 km (0.075 R)
• M23: 16,881,970 km (0.063 R)
• M24: 17,533,170 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.5

Radius: 11.8

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 3.41 AU - 3.67 AU

Year: 4235 Days

Day: 14.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,433,662 km

• M1: 146,756 km (0.094 R)
• M2: 564,582 km (0.1 R)
• M3: 1,205,609 km (0.119 R)
• M4: 1,965,866 km (0.107 R)
• M5: 2,603,003 km (0.075 R)
• M6: 3,876,081 km (0.055 R)
• M7: 4,245,737 km (0.111 R)
• M8: 5,210,494 km (0.098 R)
• M9: 5,772,683 km (0.102 R)
• M10: 6,955,703 km (0.111 R)
• M11: 7,438,754 km (0.101 R)
• M12: 14,235,135 km (0.112 R)
• M13: 15,121,802 km (0.098 R)
• M14: 17,121,028 km (0.058 R)
• M15: 18,244,358 km (0.065 R)
• M16: 20,376,427 km (0.076 R)
• M17: 25,054,951 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 304.6

Radius: 8.4

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 3.64 AU - 3.92 AU

Year: 4673 Days

Day: 10.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 57.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 28,433,662 km

• M1: 105,167 km (0.081 R)
• M2: 783,294 km (0.085 R)
• M3: 1,110,465 km (0.118 R)
• M4: 1,997,880 km (0.114 R)
• M5: 3,259,139 km (0.117 R)
• M6: 4,338,488 km (0.067 R)
• M7: 4,723,104 km (0.107 R)
• M8: 5,431,899 km (0.047 R)
• M9: 5,906,274 km (0.098 R)
• M10: 6,494,492 km (0.112 R)
• M11: 8,494,616 km (0.086 R)
• M12: 8,810,567 km (0.082 R)
• M13: 9,391,605 km (0.08 R)
• M14: 9,997,925 km (0.089 R)
• M15: 12,149,741 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.1

Radius: 10

Gravity: 7.97 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 3.83 AU - 5.41 AU

Year: 6314 Days

Day: 6.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 28,433,662 km

• M1: 124,316 km (0.088 R)
• M2: 447,597 km (0.055 R)
• M3: 1,142,928 km (0.088 R)
• M4: 1,835,416 km (0.111 R)
• M5: 2,202,081 km (0.027 R)
• M6: 2,963,235 km (0.113 R)
• M7: 3,630,890 km (0.117 R)
• M8: 5,475,581 km (0.049 R)
• M9: 6,012,488 km (0.118 R)
• M10: 9,459,672 km (0.069 R)
• M11: 11,752,409 km (0.087 R)
• M12: 13,416,386 km (0.031 R)
• M13: 18,013,528 km (0.11 R)
• M14: 18,426,867 km (0.108 R)
• M15: 19,416,008 km (0.029 R)
• M16: 22,043,246 km (0.088 R)
• M17: 24,729,276 km (0.068 R)
• M18: 28,454,113 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 66.8

Radius: 4.8

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 6.19 AU - 9.99 AU

Year: 14630 Days

Day: 20.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 28,433,662 km

• M1: 59,690 km (0.044 R)
• M2: 848,968 km (0.054 R)
• M3: 998,267 km (0.103 R)
• M4: 1,286,691 km (0.027 R)
• M5: 1,875,658 km (0.082 R)
• M6: 2,192,058 km (0.05 R)
• M7: 3,779,441 km (0.102 R)
• M8: 6,006,504 km (0.078 R)
• M9: 6,188,415 km (0.059 R)
• M10: 6,789,350 km (0.085 R)
• M11: 7,222,286 km (0.063 R)
• M12: 7,780,136 km (0.041 R)
• M13: 8,863,823 km (0.114 R)
• M14: 10,086,936 km (0.034 R)
• M15: 10,827,744 km (0.109 R)
• M16: 12,222,445 km (0.072 R)
• M17: 14,696,345 km (0.086 R)
• M18: 15,818,928 km (0.101 R)
• M19: 17,118,484 km (0.05 R)
• M20: 23,029,994 km (0.069 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 188 - 16,860 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit