🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.43

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.6 AU - 0.68 AU

Year: 331 Days

Day: 15.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 33.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 486.7

Radius: 8.5

Gravity: 6.74 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.68 AU - 1 AU

Year: 497 Days

Day: 5.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 66,648,990 km

• M1: 105,766 km (0.109 R)
• M2: 491,279 km (0.069 R)
• M3: 876,644 km (0.063 R)
• M4: 1,657,544 km (0.051 R)
• M5: 1,938,340 km (0.067 R)
• M6: 3,089,196 km (0.105 R)
• M7: 3,363,409 km (0.103 R)
• M8: 3,691,327 km (0.111 R)
• M9: 4,175,426 km (0.089 R)
• M10: 4,865,970 km (0.119 R)
• M11: 5,191,196 km (0.08 R)
• M12: 5,514,327 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.7

Radius: 12

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.9 AU - 0.92 AU

Year: 561 Days

Day: 8.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 66,648,990 km

• M1: 149,299 km (0.098 R)
• M2: 550,969 km (0.056 R)
• M3: 964,009 km (0.101 R)
• M4: 1,367,474 km (0.119 R)
• M5: 1,746,705 km (0.087 R)
• M6: 2,132,368 km (0.052 R)
• M7: 2,927,930 km (0.042 R)
• M8: 3,677,714 km (0.109 R)
• M9: 4,275,657 km (0.094 R)
• M10: 4,661,769 km (0.073 R)
• M11: 5,037,708 km (0.099 R)
• M12: 6,134,261 km (0.107 R)
• M13: 6,667,876 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.9

Radius: 12.3

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 1.94 AU - 2.08 AU

Year: 1840 Days

Day: 7.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 66,648,990 km

• M1: 153,188 km (0.118 R)
• M2: 582,085 km (0.064 R)
• M3: 1,242,859 km (0.11 R)
• M4: 1,745,209 km (0.108 R)
• M5: 2,358,859 km (0.108 R)
• M6: 2,947,377 km (0.083 R)
• M7: 4,004,735 km (0.076 R)
• M8: 4,695,578 km (0.085 R)
• M9: 5,868,276 km (0.11 R)
• M10: 6,547,151 km (0.094 R)
• M11: 7,873,934 km (0.1 R)
• M12: 9,342,836 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.6

Radius: 9.4

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.9 AU - 2.82 AU

Year: 2341 Days

Day: 11.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 66,648,990 km

• M1: 124,465 km (0.038 R)
• M2: 1,190,649 km (0.051 R)
• M3: 1,774,231 km (0.052 R)
• M4: 2,151,816 km (0.105 R)
• M5: 2,451,012 km (0.109 R)
• M6: 2,825,455 km (0.078 R)
• M7: 3,370,739 km (0.059 R)
• M8: 4,122,319 km (0.064 R)
• M9: 4,705,152 km (0.046 R)
• M10: 5,434,891 km (0.03 R)
• M11: 7,837,582 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 717.5

Radius: 13

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 3.71 AU - 3.83 AU

Year: 4726 Days

Day: 6.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,648,990 km

• M1: 161,715 km (0.055 R)
• M2: 1,217,278 km (0.092 R)
• M3: 1,673,851 km (0.066 R)
• M4: 2,113,070 km (0.096 R)
• M5: 3,989,925 km (0.112 R)
• M6: 4,634,692 km (0.11 R)
• M7: 5,601,692 km (0.055 R)
• M8: 6,225,366 km (0.068 R)
• M9: 7,162,596 km (0.118 R)
• M10: 8,917,679 km (0.107 R)
• M11: 9,811,676 km (0.106 R)
• M12: 15,201,687 km (0.1 R)
• M13: 17,759,511 km (0.076 R)
• M14: 18,329,330 km (0.091 R)
• M15: 19,773,248 km (0.045 R)
• M16: 21,790,875 km (0.106 R)
• M17: 28,234,504 km (0.042 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.3

Radius: 13.8

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 3.98 AU - 4.94 AU

Year: 6082 Days

Day: 7.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 66,648,990 km

• M1: 171,888 km (0.086 R)
• M2: 608,714 km (0.072 R)
• M3: 1,076,955 km (0.115 R)
• M4: 1,704,518 km (0.082 R)
• M5: 2,174,405 km (0.101 R)
• M6: 3,257,942 km (0.035 R)
• M7: 4,675,083 km (0.097 R)
• M8: 5,114,901 km (0.118 R)
• M9: 6,079,059 km (0.038 R)
• M10: 6,809,695 km (0.071 R)
• M11: 8,367,308 km (0.07 R)
• M12: 9,187,703 km (0.079 R)
• M13: 11,922,801 km (0.064 R)
• M14: 13,339,941 km (0.103 R)
• M15: 16,506,928 km (0.049 R)
• M16: 20,726,037 km (0.119 R)
• M17: 28,236,299 km (0.062 R)
• M18: 30,839,601 km (0.109 R)
• M19: 31,611,975 km (0.045 R)
• M20: 32,994,558 km (0.045 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731

Radius: 8.7

Gravity: 9.66 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 4.06 AU - 6.18 AU

Year: 7480 Days

Day: 6.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 66,648,990 km

• M1: 108,159 km (0.106 R)
• M2: 384,317 km (0.056 R)
• M3: 671,694 km (0.034 R)
• M4: 1,206,058 km (0.116 R)
• M5: 1,775,577 km (0.071 R)
• M6: 3,584,215 km (0.077 R)
• M7: 3,975,563 km (0.065 R)
• M8: 4,287,625 km (0.063 R)
• M9: 5,050,125 km (0.112 R)
• M10: 5,542,900 km (0.033 R)
• M11: 6,203,674 km (0.101 R)
• M12: 6,482,225 km (0.111 R)
• M13: 8,716,619 km (0.048 R)
• M14: 10,660,943 km (0.099 R)
• M15: 12,161,409 km (0.09 R)
• M16: 13,217,720 km (0.106 R)
• M17: 14,034,524 km (0.117 R)
• M18: 14,455,193 km (0.1 R)
• M19: 17,090,958 km (0.12 R)
• M20: 17,501,754 km (0.077 R)
• M21: 18,701,679 km (0.043 R)
• M22: 19,211,508 km (0.109 R)
• M23: 22,061,048 km (0.095 R)
• M24: 25,802,342 km (0.078 R)
• M25: 27,168,768 km (0.079 R)
• M26: 31,659,397 km (0.072 R)
• M27: 38,931,649 km (0.1 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 570

Radius: 8.9

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 4.85 AU - 5.39 AU

Year: 7480 Days

Day: 10.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 66,648,990 km

• M1: 111,151 km (0.034 R)
• M2: 411,544 km (0.06 R)
• M3: 1,090,868 km (0.078 R)
• M4: 1,490,743 km (0.099 R)
• M5: 3,201,843 km (0.105 R)
• M6: 4,258,453 km (0.073 R)
• M7: 4,852,805 km (0.1 R)
• M8: 5,288,883 km (0.05 R)
• M9: 6,073,823 km (0.098 R)
• M10: 7,450,423 km (0.046 R)
• M11: 7,913,129 km (0.042 R)
• M12: 11,201,290 km (0.05 R)
• M13: 11,912,329 km (0.099 R)
• M14: 13,089,814 km (0.111 R)
• M15: 14,343,294 km (0.079 R)
• M16: 19,361,405 km (0.114 R)
• M17: 20,533,804 km (0.118 R)
• M18: 20,909,594 km (0.091 R)
• M19: 21,213,576 km (0.081 R)
• M20: 22,618,300 km (0.055 R)
• M21: 26,399,686 km (0.103 R)
• M22: 29,236,959 km (0.079 R)
• M23: 31,968,915 km (0.103 R)
• M24: 33,916,680 km (0.094 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 872.5

Radius: 4.2

Gravity: 49.46 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 7.9 AU - 8.04 AU

Year: 14528 Days

Day: 24.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 66,648,990 km

• M1: 52,359 km (0.083 R)
• M2: 509,082 km (0.11 R)
• M3: 1,169,556 km (0.087 R)
• M4: 1,514,230 km (0.098 R)
• M5: 1,659,788 km (0.12 R)
• M6: 1,904,830 km (0.087 R)
• M7: 3,425,492 km (0.067 R)
• M8: 3,852,744 km (0.081 R)
• M9: 4,094,494 km (0.091 R)
• M10: 4,378,730 km (0.088 R)
• M11: 4,812,115 km (0.094 R)
• M12: 4,986,247 km (0.115 R)
• M13: 5,458,677 km (0.092 R)
• M14: 6,284,158 km (0.078 R)
• M15: 10,023,207 km (0.106 R)
• M16: 11,873,433 km (0.086 R)
• M17: 12,912,091 km (0.081 R)
• M18: 17,428,451 km (0.081 R)
• M19: 19,992,559 km (0.102 R)
• M20: 22,505,504 km (0.071 R)
• M21: 25,641,374 km (0.076 R)
• M22: 27,368,332 km (0.082 R)
• M23: 28,599,672 km (0.113 R)
• M24: 30,337,551 km (0.105 R)
• M25: 30,574,514 km (0.061 R)
• M26: 32,390,781 km (0.057 R)
• M27: 32,638,216 km (0.115 R)
• M28: 42,559,397 km (0.109 R)
• M29: 47,000,809 km (0.1 R)
• M30: 56,253,736 km (0.103 R)
• M31: 57,150,575 km (0.116 R)
• M32: 57,874,928 km (0.09 R)
• M33: 58,239,349 km (0.081 R)
• M34: 58,422,157 km (0.114 R)
• M35: 63,503,249 km (0.058 R)
• M36: 64,085,334 km (0.105 R)
• M37: 66,051,349 km (0.077 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 316 - 14,021 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit