🌌 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 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.27

Radius: 1.1

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.63 AU - 0.71 AU

Year: 354 Days

Day: 26.2 Hours

Environment

Temp: -126 °C

Axial Tilt: 22.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 49,209,088 km

• M1: 33,959 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 991.9

Radius: 12.7

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.69 AU - 0.73 AU

Year: 386 Days

Day: 10.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,209,088 km

• M1: 157,975 km (0.085 R)
• M2: 611,706 km (0.073 R)
• M3: 1,011,880 km (0.114 R)
• M4: 1,508,545 km (0.076 R)
• M5: 2,073,576 km (0.099 R)
• M6: 2,850,887 km (0.085 R)
• M7: 3,355,331 km (0.081 R)
• M8: 3,840,327 km (0.051 R)
• M9: 4,604,323 km (0.071 R)
• M10: 5,015,269 km (0.096 R)
• M11: 5,517,319 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.3

Radius: 12.5

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.62 AU - 0.8 AU

Year: 386 Days

Day: 12.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 49,209,088 km

• M1: 157,676 km (0.109 R)
• M2: 550,670 km (0.045 R)
• M3: 947,852 km (0.049 R)
• M4: 1,553,125 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 425

Radius: 12.4

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.46 AU - 2.22 AU

Year: 1612 Days

Day: 10.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 49,209,088 km

• M1: 154,235 km (0.089 R)
• M2: 789,578 km (0.098 R)
• M3: 1,193,342 km (0.057 R)
• M4: 1,702,723 km (0.112 R)
• M5: 2,367,685 km (0.045 R)
• M6: 3,302,223 km (0.076 R)
• M7: 4,432,136 km (0.117 R)
• M8: 4,997,616 km (0.05 R)
• M9: 5,848,230 km (0.11 R)
• M10: 6,817,025 km (0.073 R)
• M11: 7,417,062 km (0.118 R)
• M12: 8,025,028 km (0.03 R)
• M13: 8,580,335 km (0.076 R)
• M14: 9,131,604 km (0.113 R)
• M15: 9,583,389 km (0.09 R)
• M16: 10,663,037 km (0.044 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313

Radius: 13.2

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.99 AU - 2.21 AU

Year: 1965 Days

Day: 14.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 49,209,088 km

• M1: 164,707 km (0.105 R)
• M2: 622,926 km (0.067 R)
• M3: 1,109,418 km (0.082 R)
• M4: 1,526,048 km (0.101 R)
• M5: 1,945,969 km (0.092 R)
• M6: 2,517,433 km (0.056 R)
• M7: 3,156,066 km (0.058 R)
• M8: 3,851,098 km (0.118 R)
• M9: 4,351,802 km (0.112 R)
• M10: 5,113,704 km (0.09 R)
• M11: 6,587,841 km (0.068 R)
• M12: 7,462,690 km (0.064 R)
• M13: 7,969,228 km (0.112 R)
• M14: 9,690,501 km (0.044 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783

Radius: 10.9

Gravity: 6.59 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.83 AU - 2.41 AU

Year: 1993 Days

Day: 6.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,209,088 km

• M1: 135,536 km (0.048 R)
• M2: 484,548 km (0.1 R)
• M3: 888,163 km (0.09 R)
• M4: 1,279,361 km (0.099 R)
• M5: 1,754,783 km (0.117 R)
• M6: 2,281,667 km (0.061 R)
• M7: 2,762,624 km (0.097 R)
• M8: 3,479,946 km (0.112 R)
• M9: 4,005,184 km (0.039 R)
• M10: 4,946,603 km (0.111 R)
• M11: 5,376,248 km (0.064 R)
• M12: 5,757,274 km (0.086 R)
• M13: 6,654,113 km (0.066 R)
• M14: 7,971,323 km (0.053 R)
• M15: 8,595,445 km (0.108 R)
• M16: 9,387,117 km (0.084 R)
• M17: 11,115,421 km (0.036 R)
• M18: 11,539,531 km (0.092 R)
• M19: 12,793,610 km (0.038 R)
• M20: 14,543,307 km (0.105 R)
• M21: 14,911,617 km (0.12 R)
• M22: 16,998,656 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 846.4

Radius: 7.7

Gravity: 14.28 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 5.37 AU - 6.93 AU

Year: 9848 Days

Day: 21.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 49,209,088 km

• M1: 96,191 km (0.082 R)
• M2: 345,421 km (0.094 R)
• M3: 928,404 km (0.098 R)
• M4: 1,454,091 km (0.115 R)
• M5: 2,128,479 km (0.096 R)
• M6: 2,407,778 km (0.066 R)
• M7: 2,754,097 km (0.069 R)
• M8: 3,833,745 km (0.084 R)
• M9: 4,664,910 km (0.052 R)
• M10: 5,304,441 km (0.095 R)
• M11: 6,110,774 km (0.07 R)
• M12: 9,019,704 km (0.06 R)
• M13: 9,605,829 km (0.07 R)
• M14: 11,686,735 km (0.09 R)
• M15: 12,265,230 km (0.108 R)
• M16: 18,437,339 km (0.114 R)
• M17: 20,190,626 km (0.06 R)
• M18: 21,107,661 km (0.077 R)
• M19: 22,402,580 km (0.037 R)
• M20: 23,385,139 km (0.077 R)
• M21: 24,771,163 km (0.111 R)
• M22: 25,245,089 km (0.03 R)
• M23: 26,015,818 km (0.073 R)
• M24: 27,301,761 km (0.091 R)
• M25: 29,151,389 km (0.089 R)
• M26: 38,896,045 km (0.112 R)
• M27: 41,101,566 km (0.099 R)
• M28: 46,330,461 km (0.084 R)
• M29: 47,194,538 km (0.057 R)
• M30: 48,069,386 km (0.063 R)
• M31: 48,955,155 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.4

Radius: 6.5

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 7.5 AU - 7.56 AU

Year: 13342 Days

Day: 17.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 49,209,088 km

• M1: 80,932 km (0.084 R)
• M2: 305,628 km (0.087 R)
• M3: 632,949 km (0.069 R)
• M4: 1,058,555 km (0.081 R)
• M5: 1,572,872 km (0.075 R)
• M6: 1,846,337 km (0.047 R)
• M7: 2,334,924 km (0.102 R)
• M8: 2,650,874 km (0.087 R)
• M9: 3,108,644 km (0.101 R)
• M10: 5,084,383 km (0.109 R)
• M11: 5,312,819 km (0.083 R)
• M12: 6,370,476 km (0.08 R)
• M13: 7,108,891 km (0.069 R)
• M14: 7,519,836 km (0.102 R)
• M15: 10,170,710 km (0.112 R)
• M16: 13,448,549 km (0.118 R)
• M17: 13,823,292 km (0.098 R)
• M18: 16,502,291 km (0.093 R)
• M19: 17,442,364 km (0.072 R)
• M20: 18,341,597 km (0.097 R)
• M21: 19,114,120 km (0.109 R)
• M22: 19,988,819 km (0.077 R)
• M23: 21,308,272 km (0.113 R)
• M24: 22,949,211 km (0.057 R)
• M25: 25,804,735 km (0.096 R)
• M26: 30,251,681 km (0.116 R)
• M27: 35,657,101 km (0.061 R)
• M28: 36,858,971 km (0.111 R)
• M29: 41,016,295 km (0.085 R)
• M30: 41,409,139 km (0.077 R)
• M31: 44,092,028 km (0.055 R)
• M32: 46,319,989 km (0.092 R)
• M33: 47,174,492 km (0.119 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 541 - 19,035 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit