🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.58 AU - 0.64 AU

Year: 313 Days

Day: 30.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 991.7

Radius: 10.7

Gravity: 8.66 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.73 AU - 0.75 AU

Year: 418 Days

Day: 10.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,068,457 km

• M1: 133,142 km (0.065 R)
• M2: 518,207 km (0.064 R)
• M3: 862,432 km (0.077 R)
• M4: 1,220,270 km (0.088 R)
• M5: 1,709,006 km (0.033 R)
• M6: 2,143,438 km (0.047 R)
• M7: 2,539,424 km (0.12 R)
• M8: 3,017,987 km (0.114 R)
• M9: 3,518,392 km (0.096 R)
• M10: 3,949,833 km (0.113 R)
• M11: 4,314,403 km (0.077 R)
• M12: 4,655,635 km (0.091 R)
• M13: 5,014,969 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 157.8

Radius: 12.6

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.88 AU - 1.22 AU

Year: 706 Days

Day: 14.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 63,068,457 km

• M1: 157,826 km (0.112 R)
• M2: 987,795 km (0.096 R)
• M3: 1,425,219 km (0.051 R)
• M4: 2,788,504 km (0.096 R)
• M5: 3,595,585 km (0.055 R)
• M6: 4,391,146 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.1

Radius: 10

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 3.66 AU - 3.92 AU

Year: 4840 Days

Day: 5.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 63,068,457 km

• M1: 126,111 km (0.067 R)
• M2: 473,477 km (0.079 R)
• M3: 854,054 km (0.11 R)
• M4: 1,385,276 km (0.107 R)
• M5: 2,065,947 km (0.079 R)
• M6: 2,398,652 km (0.06 R)
• M7: 3,014,247 km (0.069 R)
• M8: 3,381,061 km (0.095 R)
• M9: 5,564,742 km (0.041 R)
• M10: 6,882,100 km (0.09 R)
• M11: 7,412,574 km (0.1 R)
• M12: 9,811,825 km (0.097 R)
• M13: 10,302,057 km (0.119 R)
• M14: 12,739,306 km (0.103 R)
• M15: 14,601,201 km (0.113 R)
• M16: 17,464,654 km (0.117 R)
• M17: 18,519,169 km (0.098 R)
• M18: 19,062,209 km (0.06 R)
• M19: 21,937,929 km (0.106 R)
• M20: 23,165,081 km (0.061 R)
• M21: 26,177,533 km (0.117 R)
• M22: 27,034,430 km (0.083 R)
• M23: 27,469,909 km (0.106 R)
• M24: 28,804,322 km (0.057 R)
• M25: 32,377,617 km (0.035 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.6

Radius: 11.9

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 5.23 AU - 6.17 AU

Year: 8927 Days

Day: 9.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 63,068,457 km

• M1: 148,102 km (0.08 R)
• M2: 647,310 km (0.059 R)
• M3: 1,101,639 km (0.106 R)
• M4: 1,517,970 km (0.078 R)
• M5: 2,164,681 km (0.081 R)
• M6: 3,356,677 km (0.077 R)
• M7: 3,988,728 km (0.084 R)
• M8: 4,507,683 km (0.107 R)
• M9: 5,962,074 km (0.07 R)
• M10: 6,370,326 km (0.082 R)
• M11: 10,891,473 km (0.081 R)
• M12: 11,326,354 km (0.081 R)
• M13: 12,940,814 km (0.1 R)
• M14: 13,929,507 km (0.103 R)
• M15: 15,724,980 km (0.118 R)
• M16: 16,113,037 km (0.09 R)
• M17: 17,848,971 km (0.03 R)
• M18: 18,577,064 km (0.069 R)
• M19: 23,297,475 km (0.089 R)
• M20: 24,461,945 km (0.114 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 51

Radius: 6.9

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 5.77 AU - 7.67 AU

Year: 11428 Days

Day: 15 Hours

Environment

Temp: -215 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 63,068,457 km

• M1: 85,869 km (0.113 R)
• M2: 310,116 km (0.096 R)
• M3: 805,285 km (0.106 R)
• M4: 1,216,081 km (0.071 R)
• M5: 2,559,769 km (0.109 R)
• M6: 2,813,786 km (0.091 R)
• M7: 5,868,276 km (0.111 R)
• M8: 12,913,887 km (0.075 R)
• M9: 14,895,310 km (0.05 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 728.9

Radius: 3.8

Gravity: 50.48 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 6.94 AU - 9.7 AU

Year: 15743 Days

Day: 24.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 63,068,457 km

• M1: 47,273 km (0.091 R)
• M2: 592,707 km (0.117 R)
• M3: 1,278,763 km (0.079 R)
• M4: 1,469,051 km (0.085 R)
• M5: 3,160,704 km (0.081 R)
• M6: 4,125,760 km (0.062 R)
• M7: 4,575,002 km (0.077 R)
• M8: 5,494,580 km (0.086 R)
• M9: 5,957,885 km (0.109 R)
• M10: 9,245,448 km (0.065 R)
• M11: 10,352,472 km (0.073 R)
• M12: 11,057,527 km (0.069 R)
• M13: 13,364,176 km (0.056 R)
• M14: 17,640,431 km (0.093 R)
• M15: 19,508,759 km (0.088 R)
• M16: 21,317,996 km (0.101 R)
• M17: 21,881,980 km (0.119 R)
• M18: 23,732,954 km (0.074 R)
• M19: 24,034,544 km (0.104 R)
• M20: 26,324,139 km (0.096 R)
• M21: 27,301,312 km (0.067 R)
• M22: 28,189,924 km (0.102 R)
• M23: 28,868,948 km (0.077 R)
• M24: 31,331,479 km (0.094 R)
• M25: 34,441,020 km (0.07 R)
• M26: 35,086,685 km (0.063 R)
• M27: 36,004,168 km (0.112 R)
• M28: 36,269,256 km (0.06 R)
• M29: 37,342,471 km (0.103 R)
• M30: 39,271,087 km (0.108 R)
• M31: 40,688,676 km (0.035 R)
• M32: 41,847,012 km (0.1 R)
• M33: 41,993,319 km (0.103 R)
• M34: 43,625,581 km (0.064 R)
• M35: 50,246,484 km (0.064 R)
• M36: 53,622,010 km (0.119 R)
• M37: 55,895,300 km (0.096 R)
• M38: 56,428,766 km (0.083 R)
• M39: 56,607,385 km (0.116 R)
• M40: 58,963,851 km (0.079 R)
• M41: 59,701,817 km (0.105 R)
• M42: 61,196,151 km (0.036 R)
• M43: 61,573,736 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 622.8

Radius: 5.5

Gravity: 20.59 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 6.58 AU - 10.12 AU

Year: 15828 Days

Day: 15.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 163.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 63,068,457 km

• M1: 68,665 km (0.07 R)
• M2: 454,478 km (0.059 R)
• M3: 1,308,383 km (0.039 R)
• M4: 1,542,204 km (0.117 R)
• M5: 2,522,818 km (0.116 R)
• M6: 2,910,875 km (0.091 R)
• M7: 3,663,652 km (0.098 R)
• M8: 5,508,493 km (0.118 R)
• M9: 6,160,740 km (0.041 R)
• M10: 7,709,526 km (0.035 R)
• M11: 9,554,218 km (0.08 R)
• M12: 10,266,752 km (0.102 R)
• M13: 10,607,237 km (0.115 R)
• M14: 12,170,684 km (0.077 R)
• M15: 13,540,851 km (0.069 R)
• M16: 14,938,245 km (0.088 R)
• M17: 18,511,989 km (0.078 R)
• M18: 19,272,095 km (0.029 R)
• M19: 20,854,542 km (0.088 R)
• M20: 21,584,878 km (0.085 R)
• M21: 21,863,130 km (0.108 R)
• M22: 23,583,057 km (0.102 R)
• M23: 25,391,097 km (0.104 R)
• M24: 28,384,102 km (0.104 R)
• M25: 29,280,642 km (0.094 R)
• M26: 31,604,046 km (0.099 R)
• M27: 36,746,024 km (0.076 R)
• M28: 38,350,162 km (0.081 R)
• M29: 41,697,415 km (0.041 R)
• M30: 50,254,114 km (0.086 R)
• M31: 52,228,357 km (0.096 R)
• M32: 53,742,586 km (0.078 R)
• M33: 57,923,248 km (0.09 R)
• M34: 59,363,577 km (0.073 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 403 - 16,167 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit