🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.55 AU - 0.61 AU

Year: 281 Days

Day: 39.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.5

Radius: 9.3

Gravity: 7.29 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.97 AU - 0.97 AU

Year: 607 Days

Day: 10 Hours

Environment

Temp: -149 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 15,167,290 km

• M1: 115,639 km (0.092 R)
• M2: 460,313 km (0.046 R)
• M3: 1,250,638 km (0.117 R)
• M4: 1,646,923 km (0.119 R)
• M5: 2,209,860 km (0.107 R)
• M6: 2,696,053 km (0.118 R)
• M7: 3,058,828 km (0.106 R)
• M8: 3,466,931 km (0.096 R)
• M9: 4,198,614 km (0.085 R)
• M10: 5,079,745 km (0.097 R)
• M11: 5,744,708 km (0.116 R)
• M12: 6,060,359 km (0.09 R)
• M13: 7,036,037 km (0.052 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 540.7

Radius: 14.7

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.88 AU - 1.08 AU

Year: 617 Days

Day: 6.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 15,167,290 km

• M1: 182,809 km (0.062 R)
• M2: 646,861 km (0.1 R)
• M3: 1,157,140 km (0.071 R)
• M4: 1,629,869 km (0.04 R)
• M5: 2,602,853 km (0.054 R)
• M6: 3,069,000 km (0.101 R)
• M7: 3,721,397 km (0.084 R)
• M8: 4,390,997 km (0.116 R)
• M9: 4,961,413 km (0.108 R)
• M10: 5,757,274 km (0.117 R)
• M11: 6,233,145 km (0.092 R)
• M12: 6,795,184 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.8

Radius: 12.5

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.3 AU - 1.67 AU

Year: 1145 Days

Day: 5.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 15,167,290 km

• M1: 155,582 km (0.105 R)
• M2: 596,896 km (0.118 R)
• M3: 1,100,442 km (0.096 R)
• M4: 1,523,056 km (0.083 R)
• M5: 2,023,311 km (0.107 R)
• M6: 2,702,037 km (0.12 R)
• M7: 3,385,400 km (0.049 R)
• M8: 3,825,816 km (0.106 R)
• M9: 4,959,319 km (0.076 R)
• M10: 5,730,047 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384.8

Radius: 12.5

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.58 AU - 1.68 AU

Year: 1323 Days

Day: 13 Hours

Environment

Temp: -191 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 15,167,290 km

• M1: 155,432 km (0.077 R)
• M2: 578,046 km (0.099 R)
• M3: 1,397,095 km (0.091 R)
• M4: 2,286,005 km (0.103 R)
• M5: 3,036,837 km (0.083 R)
• M6: 3,521,534 km (0.092 R)
• M7: 3,962,100 km (0.06 R)
• M8: 4,791,021 km (0.046 R)
• M9: 5,490,840 km (0.082 R)
• M10: 6,128,875 km (0.065 R)
• M11: 6,792,791 km (0.11 R)
• M12: 7,189,973 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.4

Radius: 14.2

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 2.73 AU - 2.75 AU

Year: 2884 Days

Day: 14.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 15,167,290 km

• M1: 176,675 km (0.093 R)
• M2: 731,085 km (0.045 R)
• M3: 1,297,612 km (0.051 R)
• M4: 2,158,697 km (0.098 R)
• M5: 3,797,243 km (0.103 R)
• M6: 4,848,018 km (0.102 R)
• M7: 6,084,744 km (0.102 R)
• M8: 6,664,585 km (0.034 R)
• M9: 7,334,484 km (0.078 R)
• M10: 8,048,814 km (0.06 R)
• M11: 8,659,323 km (0.04 R)
• M12: 9,238,117 km (0.108 R)
• M13: 9,908,017 km (0.115 R)
• M14: 10,372,368 km (0.105 R)
• M15: 10,886,087 km (0.053 R)
• M16: 13,796,065 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.1

Radius: 13.3

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 5.4 AU - 6.74 AU

Year: 9509 Days

Day: 8.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 15,167,290 km

• M1: 165,455 km (0.115 R)
• M2: 644,168 km (0.109 R)
• M3: 1,216,081 km (0.088 R)
• M4: 2,406,431 km (0.102 R)
• M5: 4,211,180 km (0.062 R)
• M6: 5,644,028 km (0.092 R)
• M7: 6,271,442 km (0.048 R)
• M8: 6,753,297 km (0.033 R)
• M9: 8,131,991 km (0.068 R)
• M10: 8,615,940 km (0.089 R)
• M11: 21,722,508 km (0.113 R)
• M12: 28,534,747 km (0.068 R)
• M13: 29,347,213 km (0.101 R)
• M14: 33,306,919 km (0.078 R)
• M15: 34,778,812 km (0.116 R)
• M16: 40,845,754 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 586.4

Radius: 7.4

Gravity: 10.71 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 6.58 AU - 6.7 AU

Year: 10879 Days

Day: 18.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 15,167,290 km

• M1: 92,751 km (0.096 R)
• M2: 1,276,070 km (0.12 R)
• M3: 1,579,604 km (0.109 R)
• M4: 1,980,526 km (0.043 R)
• M5: 2,371,425 km (0.073 R)
• M6: 3,476,954 km (0.085 R)
• M7: 3,992,917 km (0.119 R)
• M8: 5,112,657 km (0.032 R)
• M9: 5,406,018 km (0.055 R)
• M10: 5,990,796 km (0.058 R)
• M11: 9,515,771 km (0.114 R)
• M12: 9,960,525 km (0.082 R)
• M13: 11,433,167 km (0.097 R)
• M14: 13,226,995 km (0.112 R)
• M15: 13,656,640 km (0.101 R)
• M16: 16,292,255 km (0.088 R)
• M17: 18,101,492 km (0.086 R)
• M18: 19,563,063 km (0.117 R)
• M19: 20,444,344 km (0.088 R)
• M20: 22,545,297 km (0.038 R)
• M21: 27,566,400 km (0.03 R)
• M22: 29,083,023 km (0.116 R)
• M23: 29,392,990 km (0.104 R)
• M24: 30,548,035 km (0.083 R)
• M25: 31,733,149 km (0.119 R)
• M26: 32,061,516 km (0.108 R)
• M27: 32,836,733 km (0.106 R)
• M28: 33,851,754 km (0.043 R)
• M29: 34,309,524 km (0.087 R)
• M30: 35,120,494 km (0.099 R)
• M31: 35,354,614 km (0.071 R)
• M32: 36,660,454 km (0.061 R)
• M33: 37,264,530 km (0.051 R)
• M34: 39,874,415 km (0.096 R)
• M35: 41,289,012 km (0.115 R)
• M36: 42,736,671 km (0.113 R)
• M37: 45,454,864 km (0.082 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 13.8

Radius: 5.8

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 7.1 AU - 7.5 AU

Year: 12541 Days

Day: 19.1 Hours

Environment

Temp: -224 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 15,167,290 km

• M1: 75,697 km (0.101 R)
• M2: 346,768 km (0.098 R)
• M3: 1,280,707 km (0.061 R)
• M4: 1,947,764 km (0.111 R)
• M5: 2,823,809 km (0.103 R)
• M6: 3,188,080 km (0.105 R)
• M7: 3,669,785 km (0.116 R)
• M8: 9,244,700 km (0.117 R)
• M9: 9,573,366 km (0.106 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: 486 - 16,633 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit