🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.59 AU - 0.67 AU

Year: 328 Days

Day: 29.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 45.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14

Radius: 12.8

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.97 AU - 1.05 AU

Year: 666 Days

Day: 5.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 67,892,117 km

• M1: 160,519 km (0.102 R)
• M2: 568,622 km (0.108 R)
• M3: 1,230,592 km (0.049 R)
• M4: 1,847,085 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 705.7

Radius: 8

Gravity: 11.03 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.89 AU - 1.35 AU

Year: 778 Days

Day: 5.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 67,892,117 km

• M1: 99,632 km (0.108 R)
• M2: 372,050 km (0.051 R)
• M3: 661,821 km (0.119 R)
• M4: 1,112,859 km (0.066 R)
• M5: 1,397,693 km (0.102 R)
• M6: 1,688,960 km (0.108 R)
• M7: 2,020,918 km (0.065 R)
• M8: 2,428,422 km (0.059 R)
• M9: 2,829,195 km (0.111 R)
• M10: 3,181,049 km (0.086 R)
• M11: 3,477,702 km (0.099 R)
• M12: 4,080,432 km (0.109 R)
• M13: 4,580,836 km (0.057 R)
• M14: 5,743,062 km (0.039 R)
• M15: 6,867,440 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.1

Radius: 14

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.98 AU - 1.5 AU

Year: 906 Days

Day: 11.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,892,117 km

• M1: 177,124 km (0.116 R)
• M2: 918,082 km (0.109 R)
• M3: 1,416,991 km (0.12 R)
• M4: 1,952,701 km (0.116 R)
• M5: 2,439,792 km (0.06 R)
• M6: 3,196,009 km (0.109 R)
• M7: 3,721,845 km (0.111 R)
• M8: 4,728,041 km (0.088 R)
• M9: 5,563,246 km (0.043 R)
• M10: 6,578,716 km (0.111 R)
• M11: 7,075,680 km (0.114 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 836.4

Radius: 6.3

Gravity: 21.07 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 5.13 AU - 7.69 AU

Year: 10646 Days

Day: 21.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 67,892,117 km

• M1: 78,988 km (0.045 R)
• M2: 601,084 km (0.083 R)
• M3: 862,731 km (0.108 R)
• M4: 1,187,657 km (0.11 R)
• M5: 1,761,365 km (0.089 R)
• M6: 2,030,193 km (0.095 R)
• M7: 3,028,310 km (0.093 R)
• M8: 3,390,636 km (0.109 R)
• M9: 4,319,040 km (0.062 R)
• M10: 5,135,844 km (0.069 R)
• M11: 5,406,617 km (0.057 R)
• M12: 7,029,604 km (0.092 R)
• M13: 7,578,030 km (0.047 R)
• M14: 7,840,724 km (0.034 R)
• M15: 8,384,213 km (0.081 R)
• M16: 9,196,679 km (0.099 R)
• M17: 9,749,592 km (0.1 R)
• M18: 11,313,638 km (0.119 R)
• M19: 12,066,265 km (0.073 R)
• M20: 13,100,286 km (0.027 R)
• M21: 15,552,494 km (0.099 R)
• M22: 16,555,248 km (0.075 R)
• M23: 18,609,377 km (0.098 R)
• M24: 23,216,094 km (0.104 R)
• M25: 25,292,662 km (0.063 R)
• M26: 27,902,546 km (0.052 R)
• M27: 30,908,117 km (0.12 R)
• M28: 31,579,063 km (0.095 R)
• M29: 31,804,956 km (0.062 R)
• M30: 37,175,071 km (0.115 R)
• M31: 37,679,814 km (0.092 R)
• M32: 42,292,664 km (0.079 R)
• M33: 43,676,594 km (0.093 R)
• M34: 46,827,125 km (0.104 R)
• M35: 49,060,023 km (0.079 R)
• M36: 50,741,803 km (0.115 R)
• M37: 52,461,729 km (0.112 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 488.5

Radius: 3.1

Gravity: 50.83 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 5.46 AU - 7.98 AU

Year: 11428 Days

Day: 23.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 67,892,117 km

• M1: 38,596 km (0.097 R)
• M2: 166,951 km (0.115 R)
• M3: 523,144 km (0.11 R)
• M4: 701,464 km (0.108 R)
• M5: 1,215,034 km (0.088 R)
• M6: 1,339,649 km (0.114 R)
• M7: 1,719,328 km (0.099 R)
• M8: 1,860,698 km (0.117 R)
• M9: 2,061,159 km (0.052 R)
• M10: 2,257,282 km (0.103 R)
• M11: 2,564,706 km (0.118 R)
• M12: 2,921,048 km (0.085 R)
• M13: 3,357,275 km (0.12 R)
• M14: 3,783,181 km (0.118 R)
• M15: 4,620,779 km (0.075 R)
• M16: 5,374,304 km (0.108 R)
• M17: 5,608,723 km (0.051 R)
• M18: 6,133,961 km (0.119 R)
• M19: 7,735,556 km (0.065 R)
• M20: 8,474,271 km (0.104 R)
• M21: 8,745,791 km (0.099 R)
• M22: 9,840,997 km (0.11 R)
• M23: 10,090,676 km (0.085 R)
• M24: 11,293,592 km (0.049 R)
• M25: 11,512,155 km (0.11 R)
• M26: 13,121,678 km (0.105 R)
• M27: 19,145,386 km (0.11 R)
• M28: 22,063,442 km (0.114 R)
• M29: 22,233,834 km (0.118 R)
• M30: 23,098,510 km (0.085 R)
• M31: 23,627,787 km (0.111 R)
• M32: 23,985,326 km (0.038 R)
• M33: 28,559,430 km (0.08 R)
• M34: 28,660,409 km (0.108 R)
• M35: 34,820,999 km (0.088 R)
• M36: 35,633,465 km (0.071 R)
• M37: 36,696,507 km (0.104 R)
• M38: 43,522,060 km (0.079 R)
• M39: 46,111,449 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 449.6

Radius: 4.3

Gravity: 24.32 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 9.82 AU - 10.22 AU

Year: 20807 Days

Day: 15.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 67,892,117 km

• M1: 84,373 km (0.11 R)
• M2: 311,014 km (0.089 R)
• M3: 489,933 km (0.112 R)
• M4: 756,367 km (0.057 R)
• M5: 1,152,053 km (0.116 R)
• M6: 2,094,071 km (0.099 R)
• M7: 2,276,431 km (0.095 R)
• M8: 3,325,261 km (0.066 R)
• M9: 4,593,403 km (0.065 R)
• M10: 5,079,446 km (0.082 R)
• M11: 5,560,852 km (0.094 R)
• M12: 5,714,788 km (0.083 R)
• M13: 5,871,716 km (0.108 R)
• M14: 6,401,592 km (0.103 R)
• M15: 6,656,656 km (0.08 R)
• M16: 7,186,981 km (0.094 R)
• M17: 7,416,165 km (0.106 R)
• M18: 8,482,498 km (0.05 R)
• M19: 9,158,681 km (0.048 R)
• M20: 9,869,869 km (0.077 R)
• M21: 10,795,132 km (0.117 R)
• M22: 11,776,644 km (0.102 R)
• M23: 12,550,663 km (0.106 R)
• M24: 13,704,661 km (0.117 R)
• M25: 15,001,674 km (0.111 R)
• M26: 20,917,073 km (0.117 R)
• M27: 23,622,551 km (0.044 R)
• M28: 26,661,333 km (0.076 R)
• M29: 30,305,686 km (0.097 R)
• M30: 31,024,055 km (0.116 R)
• M31: 31,876,464 km (0.108 R)
• M32: 33,120,969 km (0.096 R)
• M33: 41,129,541 km (0.067 R)
• M34: 41,862,122 km (0.101 R)
• M35: 46,758,011 km (0.076 R)
• M36: 50,838,443 km (0.078 R)
• M37: 52,706,471 km (0.113 R)
• M38: 53,918,962 km (0.12 R)
• M39: 65,479,138 km (0.082 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 450 - 12,743 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit