🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.51 AU - 0.53 AU

Year: 134 Days

Day: 15.5 Hours

Environment

Temp: 268 °C

Axial Tilt: 32.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.52 AU - 0.64 AU

Year: 157 Days

Day: 34.4 Hours

Environment

Temp: 234 °C

Axial Tilt: 6.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 95,775,505 km

• M1: 74,201 km (0.115 R)
• M2: 124,765 km (0.063 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1 AU - 1.16 AU

Year: 400 Days

Day: 14.2 Hours

Environment

Temp: 32 °C

Axial Tilt: 18.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.61

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.61 AU - 2.67 AU

Year: 1116 Days

Day: 42.2 Hours

Environment

Temp: -72 °C

Axial Tilt: 6.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 95,775,505 km

• M1: 1,386,174 km (0.03 R)

Asteroid Belt

Center: 3.78 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948.1

Radius: 10.2

Gravity: 9.11 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 4.5 AU - 6.34 AU

Year: 4498 Days

Day: 12.7 Hours

Environment

Temp: -144 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 95,775,505 km

• M1: 265,387 km (0.115 R)
• M2: 486,492 km (0.104 R)
• M3: 597,344 km (0.085 R)
• M4: 742,903 km (0.103 R)
• M5: 846,874 km (0.033 R)
• M6: 1,189,453 km (0.111 R)
• M7: 1,540,409 km (0.091 R)
• M8: 1,607,579 km (0.038 R)
• M9: 1,675,945 km (0.09 R)
• M10: 1,780,364 km (0.089 R)
• M11: 2,432,910 km (0.081 R)
• M12: 2,713,406 km (0.086 R)
• M13: 2,899,356 km (0.11 R)
• M14: 3,089,495 km (0.052 R)
• M15: 3,262,131 km (0.036 R)
• M16: 3,616,828 km (0.1 R)
• M17: 3,798,888 km (0.079 R)
• M18: 3,983,941 km (0.103 R)
• M19: 4,219,707 km (0.047 R)
• M20: 4,606,268 km (0.112 R)
• M21: 5,054,762 km (0.107 R)
• M22: 5,491,289 km (0.085 R)
• M23: 5,674,696 km (0.074 R)
• M24: 5,806,791 km (0.087 R)
• M25: 6,128,277 km (0.096 R)
• M26: 6,455,597 km (0.118 R)
• M27: 6,538,325 km (0.094 R)
• M28: 6,621,501 km (0.105 R)
• M29: 7,616,626 km (0.086 R)
• M30: 7,939,159 km (0.119 R)
• M31: 8,206,191 km (0.076 R)
• M32: 8,536,802 km (0.106 R)
• M33: 8,719,013 km (0.097 R)
• M34: 9,273,273 km (0.104 R)
• M35: 10,093,817 km (0.111 R)
• M36: 10,448,065 km (0.102 R)
• M37: 10,642,991 km (0.12 R)
• M38: 10,740,978 km (0.105 R)
• M39: 10,970,610 km (0.086 R)
• M40: 11,268,310 km (0.074 R)
• M41: 12,623,368 km (0.082 R)
• M42: 12,692,482 km (0.111 R)
• M43: 13,602,336 km (0.079 R)
• M44: 13,673,245 km (0.12 R)
• M45: 13,779,759 km (0.099 R)
• M46: 14,100,946 km (0.105 R)
• M47: 14,424,675 km (0.109 R)
• M48: 14,496,931 km (0.097 R)
• M49: 14,678,094 km (0.109 R)
• M50: 15,299,973 km (0.108 R)
• M51: 15,632,529 km (0.109 R)
• M52: 16,079,826 km (0.075 R)
• M53: 17,562,341 km (0.071 R)
• M54: 17,755,622 km (0.092 R)
• M55: 18,261,262 km (0.103 R)
• M56: 18,339,502 km (0.101 R)
• M57: 18,496,281 km (0.04 R)
• M58: 18,692,852 km (0.041 R)
• M59: 19,008,953 km (0.113 R)
• M60: 19,446,377 km (0.066 R)
• M61: 19,766,516 km (0.109 R)
• M62: 20,169,234 km (0.11 R)
• M63: 21,270,124 km (0.08 R)
• M64: 21,641,426 km (0.117 R)
• M65: 22,264,950 km (0.109 R)
• M66: 22,894,458 km (0.107 R)
• M67: 23,190,213 km (0.099 R)
• M68: 23,956,603 km (0.115 R)
• M69: 25,252,420 km (0.086 R)
• M70: 25,426,851 km (0.077 R)
• M71: 25,733,078 km (0.063 R)
• M72: 26,305,290 km (0.034 R)
• M73: 27,327,791 km (0.11 R)
• M74: 27,956,401 km (0.091 R)
• M75: 28,182,144 km (0.116 R)
• M76: 29,778,952 km (0.094 R)
• M77: 30,194,385 km (0.069 R)
• M78: 30,425,963 km (0.097 R)
• M79: 30,937,588 km (0.065 R)
• M80: 31,217,784 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 150.3

Radius: 14

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 5 AU - 8.26 AU

Year: 6085 Days

Day: 5.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 95,775,505 km

• M1: 191,635 km (0.109 R)
• M2: 281,094 km (0.063 R)
• M3: 411,245 km (0.096 R)
• M4: 523,144 km (0.116 R)
• M5: 622,626 km (0.106 R)
• M6: 796,010 km (0.118 R)
• M7: 1,040,603 km (0.088 R)
• M8: 1,275,621 km (0.104 R)
• M9: 1,406,070 km (0.055 R)
• M10: 1,566,439 km (0.077 R)
• M11: 1,919,640 km (0.061 R)
• M12: 2,070,883 km (0.106 R)
• M13: 2,197,742 km (0.074 R)
• M14: 2,400,597 km (0.115 R)
• M15: 2,519,228 km (0.118 R)
• M16: 2,685,880 km (0.058 R)
• M17: 2,840,564 km (0.047 R)
• M18: 2,934,811 km (0.073 R)
• M19: 3,355,779 km (0.073 R)
• M20: 3,523,030 km (0.089 R)
• M21: 3,641,661 km (0.073 R)
• M22: 3,744,435 km (0.036 R)
• M23: 4,094,344 km (0.06 R)
• M24: 4,345,669 km (0.118 R)
• M25: 4,510,077 km (0.037 R)
• M26: 4,602,229 km (0.088 R)
• M27: 5,111,011 km (0.119 R)
• M28: 5,480,069 km (0.104 R)
• M29: 5,797,516 km (0.118 R)
• M30: 5,978,829 km (0.09 R)
• M31: 6,161,936 km (0.079 R)
• M32: 6,326,344 km (0.112 R)
• M33: 6,554,930 km (0.11 R)
• M34: 6,722,779 km (0.057 R)
• M35: 7,715,959 km (0.064 R)
• M36: 7,871,242 km (0.102 R)
• M37: 8,365,812 km (0.114 R)
• M38: 8,685,802 km (0.085 R)
• M39: 8,893,593 km (0.055 R)
• M40: 9,009,831 km (0.085 R)
• M41: 9,220,315 km (0.081 R)
• M42: 9,361,536 km (0.116 R)
• M43: 9,456,081 km (0.102 R)
• M44: 9,909,662 km (0.071 R)
• M45: 10,248,352 km (0.116 R)
• M46: 10,443,727 km (0.057 R)
• M47: 10,640,149 km (0.063 R)
• M48: 11,212,211 km (0.086 R)
• M49: 11,337,873 km (0.081 R)
• M50: 11,463,984 km (0.079 R)
• M51: 11,921,903 km (0.115 R)
• M52: 12,829,663 km (0.106 R)
• M53: 13,491,783 km (0.1 R)
• M54: 14,491,995 km (0.039 R)
• M55: 14,904,436 km (0.075 R)
• M56: 15,014,989 km (0.113 R)
• M57: 15,572,241 km (0.081 R)
• M58: 15,909,734 km (0.111 R)
• M59: 16,735,663 km (0.094 R)
• M60: 16,965,895 km (0.107 R)
• M61: 17,429,648 km (0.086 R)
• M62: 18,517,972 km (0.042 R)
• M63: 18,935,650 km (0.085 R)
• M64: 19,628,437 km (0.082 R)
• M65: 20,115,229 km (0.094 R)
• M66: 20,298,785 km (0.055 R)
• M67: 20,452,273 km (0.112 R)
• M68: 20,729,478 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 143.2

Radius: 13.5

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 6.42 AU - 9.66 AU

Year: 8126 Days

Day: 14.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 95,775,505 km

• M1: 204,351 km (0.086 R)
• M2: 426,653 km (0.042 R)
• M3: 538,552 km (0.114 R)
• M4: 653,144 km (0.095 R)
• M5: 1,090,120 km (0.096 R)
• M6: 1,307,934 km (0.115 R)
• M7: 1,862,194 km (0.102 R)
• M8: 2,352,127 km (0.108 R)
• M9: 2,451,610 km (0.081 R)
• M10: 2,793,890 km (0.114 R)
• M11: 2,899,656 km (0.084 R)
• M12: 3,042,671 km (0.119 R)
• M13: 3,243,431 km (0.046 R)
• M14: 3,581,523 km (0.091 R)
• M15: 3,774,354 km (0.094 R)
• M16: 4,251,272 km (0.109 R)
• M17: 4,559,294 km (0.114 R)
• M18: 5,110,562 km (0.118 R)
• M19: 5,615,904 km (0.07 R)
• M20: 5,772,982 km (0.052 R)
• M21: 5,886,078 km (0.051 R)
• M22: 6,045,549 km (0.068 R)
• M23: 6,252,892 km (0.111 R)
• M24: 6,603,699 km (0.057 R)
• M25: 6,985,024 km (0.063 R)
• M26: 7,178,454 km (0.12 R)
• M27: 7,471,815 km (0.101 R)
• M28: 7,944,545 km (0.045 R)
• M29: 8,070,656 km (0.077 R)
• M30: 8,197,365 km (0.086 R)
• M31: 8,375,835 km (0.091 R)
• M32: 8,478,459 km (0.094 R)
• M33: 8,736,815 km (0.116 R)
• M34: 8,866,965 km (0.068 R)
• M35: 9,024,043 km (0.053 R)
• M36: 9,688,407 km (0.089 R)
• M37: 9,877,199 km (0.104 R)
• M38: 10,341,102 km (0.107 R)
• M39: 10,645,085 km (0.07 R)
• M40: 11,890,188 km (0.101 R)
• M41: 12,005,678 km (0.08 R)
• M42: 12,121,467 km (0.119 R)
• M43: 12,972,679 km (0.093 R)
• M44: 15,262,573 km (0.077 R)
• M45: 15,830,596 km (0.096 R)
• M46: 16,987,287 km (0.08 R)
• M47: 17,084,825 km (0.085 R)
• M48: 17,378,934 km (0.115 R)
• M49: 17,773,573 km (0.056 R)
• M50: 18,204,415 km (0.118 R)
• M51: 18,337,707 km (0.106 R)
• M52: 18,571,678 km (0.109 R)
• M53: 18,874,015 km (0.068 R)
• M54: 19,381,601 km (0.093 R)
• M55: 19,654,168 km (0.071 R)
• M56: 19,859,417 km (0.068 R)
• M57: 20,168,635 km (0.104 R)
• M58: 20,722,147 km (0.103 R)
• M59: 21,844,431 km (0.1 R)
• M60: 22,128,068 km (0.093 R)
• M61: 22,234,881 km (0.087 R)
• M62: 22,341,694 km (0.083 R)
• M63: 22,448,656 km (0.054 R)
• M64: 22,806,794 km (0.08 R)
• M65: 23,202,779 km (0.119 R)
• M66: 23,637,361 km (0.077 R)
• M67: 24,074,636 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.4

Radius: 12.4

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 7.22 AU - 9.98 AU

Year: 8990 Days

Day: 11.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 107.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 95,775,505 km

• M1: 206,894 km (0.116 R)
• M2: 303,235 km (0.069 R)
• M3: 418,276 km (0.099 R)
• M4: 542,292 km (0.113 R)
• M5: 693,536 km (0.057 R)
• M6: 820,694 km (0.11 R)
• M7: 1,027,438 km (0.085 R)
• M8: 1,394,851 km (0.086 R)
• M9: 1,476,531 km (0.032 R)
• M10: 1,628,074 km (0.047 R)
• M11: 2,325,200 km (0.104 R)
• M12: 2,583,555 km (0.06 R)
• M13: 2,851,485 km (0.105 R)
• M14: 3,259,438 km (0.079 R)
• M15: 3,436,861 km (0.086 R)
• M16: 3,617,576 km (0.089 R)
• M17: 4,493,920 km (0.098 R)
• M18: 4,617,338 km (0.094 R)
• M19: 5,070,919 km (0.069 R)
• M20: 5,199,573 km (0.109 R)
• M21: 5,355,305 km (0.072 R)
• M22: 6,267,253 km (0.088 R)
• M23: 6,405,332 km (0.104 R)
• M24: 6,488,808 km (0.091 R)
• M25: 6,572,582 km (0.103 R)
• M26: 6,684,781 km (0.101 R)
• M27: 7,169,179 km (0.034 R)
• M28: 7,255,796 km (0.099 R)
• M29: 7,842,519 km (0.049 R)
• M30: 7,931,978 km (0.051 R)
• M31: 8,021,587 km (0.117 R)
• M32: 8,111,645 km (0.1 R)
• M33: 8,414,132 km (0.075 R)
• M34: 8,813,110 km (0.051 R)
• M35: 9,124,124 km (0.106 R)
• M36: 9,344,033 km (0.106 R)
• M37: 9,757,222 km (0.027 R)
• M38: 10,437,144 km (0.094 R)
• M39: 10,535,580 km (0.082 R)
• M40: 10,667,226 km (0.081 R)
• M41: 10,766,409 km (0.096 R)
• M42: 10,899,102 km (0.104 R)
• M43: 11,877,024 km (0.066 R)
• M44: 12,082,870 km (0.041 R)
• M45: 12,186,243 km (0.103 R)
• M46: 12,359,178 km (0.109 R)
• M47: 12,533,010 km (0.096 R)
• M48: 12,707,591 km (0.112 R)
• M49: 13,023,841 km (0.094 R)
• M50: 14,607,484 km (0.097 R)
• M51: 14,938,993 km (0.078 R)
• M52: 15,422,044 km (0.102 R)
• M53: 15,646,740 km (0.118 R)
• M54: 16,023,727 km (0.096 R)
• M55: 16,441,853 km (0.054 R)
• M56: 17,288,876 km (0.114 R)
• M57: 18,189,456 km (0.059 R)
• M58: 18,387,373 km (0.116 R)
• M59: 18,625,683 km (0.102 R)
• M60: 20,445,691 km (0.06 R)
• M61: 20,857,833 km (0.079 R)
• M62: 21,106,464 km (0.111 R)
• M63: 21,522,945 km (0.086 R)
• M64: 22,321,947 km (0.103 R)
• M65: 22,618,749 km (0.103 R)
• M66: 22,959,533 km (0.052 R)
• M67: 23,044,954 km (0.071 R)
• M68: 23,387,832 km (0.078 R)
• M69: 23,516,935 km (0.12 R)
• M70: 24,122,208 km (0.112 R)
• M71: 24,426,789 km (0.089 R)
• M72: 24,557,687 km (0.104 R)
• M73: 24,864,213 km (0.043 R)
• M74: 25,348,312 km (0.07 R)
• M75: 25,524,987 km (0.108 R)
• M76: 26,684,221 km (0.114 R)
• M77: 27,134,660 km (0.093 R)
• M78: 27,406,180 km (0.076 R)
• M79: 27,587,643 km (0.077 R)
• M80: 28,684,793 km (0.079 R)
• M81: 28,823,022 km (0.106 R)
• M82: 29,703,256 km (0.075 R)
• M83: 30,123,177 km (0.108 R)
• M84: 31,158,245 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 870.8

Radius: 7.2

Gravity: 16.8 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 14.03 AU - 20.03 AU

Year: 25051 Days

Day: 23.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 95,775,505 km

• M1: 123,418 km (0.074 R)
• M2: 467,793 km (0.074 R)
• M3: 537,804 km (0.109 R)
• M4: 663,167 km (0.046 R)
• M5: 1,064,538 km (0.073 R)
• M6: 1,748,949 km (0.113 R)
• M7: 1,823,897 km (0.079 R)
• M8: 2,054,876 km (0.096 R)
• M9: 3,391,833 km (0.072 R)
• M10: 3,485,630 km (0.109 R)
• M11: 3,918,866 km (0.097 R)
• M12: 4,017,451 km (0.093 R)
• M13: 4,267,728 km (0.071 R)
• M14: 4,574,553 km (0.064 R)
• M15: 5,648,367 km (0.112 R)
• M16: 5,704,017 km (0.11 R)
• M17: 6,156,102 km (0.086 R)
• M18: 7,034,541 km (0.066 R)
• M19: 8,014,108 km (0.099 R)
• M20: 8,583,776 km (0.102 R)
• M21: 8,647,954 km (0.112 R)
• M22: 8,712,281 km (0.109 R)
• M23: 8,906,010 km (0.07 R)
• M24: 9,963,368 km (0.066 R)
• M25: 10,644,038 km (0.115 R)
• M26: 11,410,278 km (0.048 R)
• M27: 12,266,277 km (0.119 R)
• M28: 12,628,903 km (0.09 R)
• M29: 13,439,424 km (0.082 R)
• M30: 14,190,704 km (0.118 R)
• M31: 15,343,057 km (0.058 R)
• M32: 15,420,848 km (0.115 R)
• M33: 16,127,847 km (0.075 R)
• M34: 18,311,228 km (0.097 R)
• M35: 19,479,438 km (0.098 R)
• M36: 20,243,135 km (0.073 R)
• M37: 20,757,752 km (0.084 R)
• M38: 21,189,790 km (0.027 R)
• M39: 21,276,557 km (0.096 R)
• M40: 21,537,605 km (0.069 R)
• M41: 23,215,346 km (0.044 R)
• M42: 26,041,399 km (0.099 R)
• M43: 26,227,499 km (0.097 R)
• M44: 27,826,550 km (0.079 R)
• M45: 28,589,948 km (0.117 R)
• M46: 30,234,777 km (0.059 R)
• M47: 30,528,288 km (0.084 R)
• M48: 31,810,940 km (0.09 R)
• M49: 33,110,946 km (0.058 R)
• M50: 33,514,561 km (0.091 R)
• M51: 33,615,689 km (0.091 R)
• M52: 33,716,817 km (0.108 R)
• M53: 35,556,422 km (0.12 R)
• M54: 40,080,860 km (0.113 R)
• M55: 40,510,954 km (0.07 R)
• M56: 41,701,304 km (0.096 R)
• M57: 42,027,876 km (0.077 R)
• M58: 44,005,560 km (0.039 R)
• M59: 48,851,334 km (0.08 R)
• M60: 50,117,830 km (0.102 R)
• M61: 51,278,560 km (0.118 R)
• M62: 51,745,305 km (0.107 R)
• M63: 52,682,985 km (0.106 R)
• M64: 53,154,068 km (0.112 R)
• M65: 53,981,644 km (0.091 R)
• M66: 55,290,625 km (0.116 R)
• M67: 56,369,525 km (0.115 R)
• M68: 56,971,806 km (0.085 R)
• M69: 60,384,283 km (0.115 R)
• M70: 61,866,798 km (0.073 R)
• M71: 62,488,227 km (0.047 R)
• M72: 64,364,484 km (0.111 R)
• M73: 65,499,034 km (0.091 R)
• M74: 65,752,004 km (0.094 R)
• M75: 70,491,414 km (0.093 R)
• M76: 70,750,817 km (0.085 R)
• M77: 71,400,521 km (0.094 R)
• M78: 71,921,570 km (0.109 R)
• M79: 72,052,019 km (0.1 R)
• M80: 72,836,660 km (0.098 R)
• M81: 74,282,374 km (0.109 R)
• M82: 74,678,359 km (0.093 R)
• M83: 75,074,943 km (0.105 R)
• M84: 80,700,721 km (0.038 R)
• M85: 81,243,612 km (0.09 R)
• M86: 82,196,550 km (0.101 R)
• M87: 82,742,582 km (0.07 R)
• M88: 83,016,197 km (0.074 R)
• M89: 88,829,420 km (0.101 R)
• M90: 90,373,570 km (0.03 R)
• M91: 90,655,262 km (0.077 R)
• M92: 94,486,614 km (0.093 R)
• M93: 95,201,991 km (0.082 R)

Kuiper Belt

Range: 30.8 - 48.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 362 - 15,068 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit