🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.2

Radius: 13.3

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.8 AU - 0.82 AU

Year: 471 Days

Day: 13 Hours

Environment

Temp: -157 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 52,426,634 km

• M1: 166,353 km (0.08 R)
• M2: 263,741 km (0.101 R)
• M3: 353,051 km (0.061 R)
• M4: 489,634 km (0.034 R)
• M5: 622,327 km (0.08 R)
• M6: 748,737 km (0.108 R)
• M7: 876,344 km (0.075 R)
• M8: 1,049,429 km (0.077 R)
• M9: 1,155,195 km (0.083 R)
• M10: 1,285,345 km (0.1 R)
• M11: 1,404,724 km (0.093 R)
• M12: 1,511,836 km (0.055 R)
• M13: 1,740,571 km (0.108 R)
• M14: 1,897,499 km (0.104 R)
• M15: 1,980,825 km (0.059 R)
• M16: 2,188,467 km (0.087 R)
• M17: 2,282,415 km (0.116 R)
• M18: 2,500,678 km (0.072 R)
• M19: 2,586,098 km (0.095 R)
• M20: 2,712,509 km (0.099 R)
• M21: 2,841,163 km (0.04 R)
• M22: 2,944,236 km (0.098 R)
• M23: 3,196,757 km (0.087 R)
• M24: 3,332,891 km (0.089 R)
• M25: 3,500,441 km (0.086 R)
• M26: 3,670,833 km (0.083 R)
• M27: 3,851,696 km (0.116 R)
• M28: 4,198,614 km (0.118 R)
• M29: 4,300,789 km (0.108 R)
• M30: 4,403,862 km (0.03 R)
• M31: 4,515,761 km (0.108 R)
• M32: 4,881,827 km (0.105 R)
• M33: 4,972,783 km (0.119 R)
• M34: 5,165,016 km (0.087 R)
• M35: 5,274,671 km (0.035 R)
• M36: 5,410,805 km (0.099 R)
• M37: 5,756,227 km (0.107 R)
• M38: 5,913,903 km (0.103 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.5

Radius: 12.8

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.92 AU - 1.2 AU

Year: 705 Days

Day: 14.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 52,426,634 km

• M1: 159,920 km (0.084 R)
• M2: 254,316 km (0.073 R)
• M3: 419,921 km (0.104 R)
• M4: 502,798 km (0.052 R)
• M5: 593,006 km (0.042 R)
• M6: 679,474 km (0.112 R)
• M7: 815,907 km (0.049 R)
• M8: 938,278 km (0.113 R)
• M9: 1,124,826 km (0.081 R)
• M10: 1,209,648 km (0.118 R)
• M11: 1,296,864 km (0.04 R)
• M12: 1,421,479 km (0.084 R)
• M13: 1,572,124 km (0.097 R)
• M14: 1,705,715 km (0.108 R)
• M15: 1,804,599 km (0.115 R)
• M16: 1,913,357 km (0.104 R)
• M17: 2,016,430 km (0.076 R)
• M18: 2,154,209 km (0.112 R)
• M19: 2,236,787 km (0.097 R)
• M20: 2,354,222 km (0.061 R)
• M21: 2,595,373 km (0.077 R)
• M22: 2,710,265 km (0.057 R)
• M23: 2,808,700 km (0.084 R)
• M24: 3,121,060 km (0.114 R)
• M25: 3,348,300 km (0.114 R)
• M26: 3,659,912 km (0.063 R)
• M27: 3,869,648 km (0.098 R)
• M28: 3,991,271 km (0.113 R)
• M29: 4,186,496 km (0.107 R)
• M30: 4,280,145 km (0.101 R)
• M31: 4,416,578 km (0.099 R)
• M32: 4,543,886 km (0.049 R)
• M33: 4,758,858 km (0.088 R)
• M34: 4,999,112 km (0.108 R)
• M35: 5,109,814 km (0.102 R)
• M36: 5,198,825 km (0.111 R)
• M37: 5,583,142 km (0.086 R)
• M38: 5,918,391 km (0.12 R)
• M39: 6,153,409 km (0.044 R)
• M40: 6,511,846 km (0.072 R)
• M41: 6,644,988 km (0.106 R)
• M42: 6,815,829 km (0.064 R)
• M43: 7,099,616 km (0.119 R)
• M44: 7,500,837 km (0.116 R)
• M45: 7,589,698 km (0.077 R)
• M46: 7,729,872 km (0.107 R)
• M47: 8,012,911 km (0.087 R)
• M48: 8,430,887 km (0.111 R)
• M49: 8,549,668 km (0.085 R)
• M50: 8,669,047 km (0.101 R)
• M51: 8,922,915 km (0.05 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.1

Radius: 12.6

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.99 AU - 1.43 AU

Year: 859 Days

Day: 11.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 52,426,634 km

• M1: 163,062 km (0.047 R)
• M2: 254,316 km (0.042 R)
• M3: 333,454 km (0.087 R)
• M4: 451,486 km (0.047 R)
• M5: 598,541 km (0.093 R)
• M6: 728,990 km (0.098 R)
• M7: 841,039 km (0.073 R)
• M8: 1,043,744 km (0.095 R)
• M9: 1,239,119 km (0.104 R)
• M10: 1,487,900 km (0.116 R)
• M11: 1,597,406 km (0.078 R)
• M12: 1,715,289 km (0.112 R)
• M13: 1,852,770 km (0.036 R)
• M14: 1,948,512 km (0.074 R)
• M15: 2,151,068 km (0.076 R)
• M16: 2,246,062 km (0.069 R)
• M17: 2,385,039 km (0.119 R)
• M18: 2,539,573 km (0.089 R)
• M19: 2,621,254 km (0.09 R)
• M20: 2,858,815 km (0.104 R)
• M21: 2,937,354 km (0.062 R)
• M22: 3,023,223 km (0.102 R)
• M23: 3,110,140 km (0.08 R)
• M24: 3,197,804 km (0.118 R)
• M25: 3,355,031 km (0.112 R)
• M26: 3,663,053 km (0.099 R)
• M27: 3,770,166 km (0.104 R)
• M28: 3,907,496 km (0.069 R)
• M29: 3,987,681 km (0.049 R)
• M30: 4,120,225 km (0.115 R)
• M31: 4,201,905 km (0.094 R)
• M32: 4,299,293 km (0.09 R)
• M33: 4,420,019 km (0.111 R)
• M34: 4,649,651 km (0.064 R)
• M35: 4,797,155 km (0.073 R)
• M36: 5,120,735 km (0.078 R)
• M37: 5,240,862 km (0.075 R)
• M38: 5,329,574 km (0.119 R)
• M39: 5,443,268 km (0.058 R)
• M40: 5,524,949 km (0.096 R)
• M41: 5,631,911 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.3

Radius: 11.9

Gravity: 2.83 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.51 AU - 1.71 AU

Year: 1319 Days

Day: 5.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 52,426,634 km

• M1: 150,645 km (0.081 R)
• M2: 252,222 km (0.112 R)
• M3: 362,476 km (0.1 R)
• M4: 442,959 km (0.106 R)
• M5: 589,565 km (0.118 R)
• M6: 718,967 km (0.04 R)
• M7: 827,875 km (0.106 R)
• M8: 916,736 km (0.069 R)
• M9: 1,009,187 km (0.104 R)
• M10: 1,084,285 km (0.074 R)
• M11: 1,247,796 km (0.113 R)
• M12: 1,489,396 km (0.059 R)
• M13: 1,584,092 km (0.067 R)
• M14: 1,664,576 km (0.107 R)
• M15: 1,788,143 km (0.052 R)
• M16: 1,889,122 km (0.083 R)
• M17: 1,966,314 km (0.096 R)
• M18: 2,213,300 km (0.026 R)
• M19: 2,294,831 km (0.111 R)
• M20: 2,442,484 km (0.077 R)
• M21: 2,689,171 km (0.111 R)
• M22: 2,825,455 km (0.099 R)
• M23: 3,074,685 km (0.082 R)
• M24: 3,186,584 km (0.111 R)
• M25: 3,279,185 km (0.09 R)
• M26: 3,393,777 km (0.063 R)
• M27: 3,488,473 km (0.087 R)
• M28: 3,562,673 km (0.111 R)
• M29: 3,680,556 km (0.057 R)
• M30: 3,931,133 km (0.096 R)
• M31: 4,153,585 km (0.095 R)
• M32: 4,483,598 km (0.112 R)
• M33: 4,646,061 km (0.099 R)
• M34: 4,775,014 km (0.112 R)
• M35: 4,857,742 km (0.069 R)
• M36: 4,976,822 km (0.1 R)
• M37: 5,254,326 km (0.108 R)
• M38: 5,549,333 km (0.081 R)
• M39: 5,736,480 km (0.096 R)
• M40: 5,875,157 km (0.09 R)
• M41: 6,258,876 km (0.114 R)
• M42: 6,375,562 km (0.119 R)
• M43: 6,863,102 km (0.105 R)
• M44: 7,010,455 km (0.12 R)
• M45: 7,213,011 km (0.099 R)
• M46: 7,294,542 km (0.071 R)
• M47: 7,444,888 km (0.088 R)
• M48: 7,665,395 km (0.114 R)
• M49: 7,916,121 km (0.076 R)
• M50: 8,014,407 km (0.069 R)
• M51: 8,197,963 km (0.061 R)
• M52: 8,297,296 km (0.106 R)
• M53: 8,569,265 km (0.111 R)
• M54: 8,800,394 km (0.083 R)
• M55: 8,931,442 km (0.079 R)
• M56: 9,151,201 km (0.09 R)
• M57: 9,239,613 km (0.103 R)
• M58: 9,655,944 km (0.05 R)
• M59: 10,261,516 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.4

Radius: 12.7

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.92 AU - 2.28 AU

Year: 1965 Days

Day: 9.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 52,426,634 km

• M1: 165,754 km (0.052 R)
• M2: 322,383 km (0.106 R)
• M3: 638,484 km (0.044 R)
• M4: 877,242 km (0.069 R)
• M5: 975,827 km (0.074 R)
• M6: 1,107,323 km (0.076 R)
• M7: 1,215,184 km (0.102 R)
• M8: 1,751,193 km (0.093 R)
• M9: 1,831,976 km (0.051 R)
• M10: 1,949,559 km (0.109 R)
• M11: 2,143,139 km (0.074 R)
• M12: 2,762,025 km (0.093 R)
• M13: 3,036,089 km (0.067 R)
• M14: 3,391,085 km (0.09 R)
• M15: 3,492,961 km (0.094 R)
• M16: 3,625,504 km (0.116 R)
• M17: 3,835,091 km (0.097 R)
• M18: 4,094,943 km (0.083 R)
• M19: 4,187,992 km (0.111 R)
• M20: 4,535,658 km (0.055 R)
• M21: 4,712,931 km (0.061 R)
• M22: 4,876,292 km (0.105 R)
• M23: 5,074,659 km (0.072 R)
• M24: 5,158,135 km (0.11 R)
• M25: 5,258,964 km (0.104 R)
• M26: 5,394,350 km (0.088 R)
• M27: 5,479,620 km (0.112 R)
• M28: 5,565,190 km (0.101 R)
• M29: 6,284,906 km (0.116 R)
• M30: 6,610,132 km (0.068 R)
• M31: 7,145,841 km (0.095 R)
• M32: 7,371,734 km (0.11 R)
• M33: 8,161,013 km (0.104 R)
• M34: 8,397,228 km (0.061 R)
• M35: 9,261,903 km (0.051 R)
• M36: 9,508,291 km (0.092 R)
• M37: 9,591,019 km (0.1 R)
• M38: 10,155,003 km (0.05 R)
• M39: 10,302,955 km (0.112 R)
• M40: 10,430,412 km (0.056 R)
• M41: 11,337,125 km (0.117 R)
• M42: 11,490,762 km (0.117 R)
• M43: 11,755,700 km (0.086 R)
• M44: 11,978,002 km (0.112 R)
• M45: 12,156,772 km (0.063 R)
• M46: 12,291,559 km (0.087 R)
• M47: 12,449,385 km (0.091 R)
• M48: 12,607,959 km (0.113 R)
• M49: 12,789,870 km (0.098 R)
• M50: 13,225,499 km (0.095 R)
• M51: 13,410,402 km (0.025 R)
• M52: 13,806,238 km (0.025 R)
• M53: 13,900,036 km (0.095 R)
• M54: 14,017,320 km (0.106 R)
• M55: 14,158,690 km (0.119 R)
• M56: 14,419,140 km (0.042 R)
• M57: 14,514,135 km (0.09 R)
• M58: 14,705,022 km (0.072 R)
• M59: 15,209,765 km (0.084 R)
• M60: 15,671,275 km (0.091 R)
• M61: 15,769,112 km (0.058 R)
• M62: 15,891,632 km (0.107 R)
• M63: 16,112,887 km (0.061 R)
• M64: 16,236,306 km (0.094 R)
• M65: 16,608,356 km (0.036 R)
• M66: 16,733,120 km (0.084 R)
• M67: 16,833,052 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.7

Radius: 10.6

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 5.03 AU - 5.89 AU

Year: 8238 Days

Day: 14.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 52,426,634 km

• M1: 137,480 km (0.063 R)
• M2: 207,791 km (0.048 R)
• M3: 365,767 km (0.081 R)
• M4: 469,737 km (0.08 R)
• M5: 635,342 km (0.096 R)
• M6: 725,849 km (0.093 R)
• M7: 950,994 km (0.114 R)
• M8: 1,087,726 km (0.104 R)
• M9: 1,231,340 km (0.112 R)
• M10: 1,555,818 km (0.057 R)
• M11: 1,830,928 km (0.108 R)
• M12: 2,062,506 km (0.113 R)
• M13: 2,406,880 km (0.119 R)
• M14: 2,490,655 km (0.098 R)
• M15: 2,991,209 km (0.043 R)
• M16: 3,428,334 km (0.08 R)
• M17: 3,618,473 km (0.087 R)
• M18: 3,812,203 km (0.11 R)
• M19: 4,159,419 km (0.036 R)
• M20: 4,235,116 km (0.113 R)
• M21: 4,439,466 km (0.087 R)
• M22: 4,804,784 km (0.099 R)
• M23: 5,509,091 km (0.063 R)
• M24: 6,044,203 km (0.101 R)
• M25: 6,303,605 km (0.102 R)
• M26: 6,419,993 km (0.072 R)
• M27: 6,714,252 km (0.115 R)
• M28: 7,164,092 km (0.096 R)
• M29: 7,438,605 km (0.1 R)
• M30: 9,356,000 km (0.08 R)
• M31: 9,925,819 km (0.077 R)
• M32: 10,061,504 km (0.114 R)
• M33: 10,197,788 km (0.105 R)
• M34: 11,098,965 km (0.081 R)
• M35: 11,523,524 km (0.12 R)
• M36: 13,162,369 km (0.107 R)
• M37: 13,498,964 km (0.103 R)
• M38: 13,611,761 km (0.116 R)
• M39: 14,180,382 km (0.091 R)
• M40: 14,563,951 km (0.087 R)
• M41: 14,795,678 km (0.094 R)
• M42: 15,458,846 km (0.041 R)
• M43: 15,576,878 km (0.115 R)
• M44: 16,052,151 km (0.046 R)
• M45: 16,612,544 km (0.047 R)
• M46: 17,057,448 km (0.113 R)
• M47: 17,342,582 km (0.115 R)
• M48: 17,547,232 km (0.117 R)
• M49: 17,629,361 km (0.085 R)
• M50: 18,041,653 km (0.108 R)
• M51: 18,582,449 km (0.073 R)
• M52: 19,170,818 km (0.093 R)
• M53: 19,255,340 km (0.052 R)
• M54: 19,509,806 km (0.097 R)
• M55: 20,972,425 km (0.076 R)
• M56: 21,497,064 km (0.12 R)
• M57: 23,006,956 km (0.037 R)
• M58: 23,638,708 km (0.097 R)
• M59: 25,847,371 km (0.061 R)
• M60: 26,174,840 km (0.095 R)
• M61: 26,268,788 km (0.046 R)
• M62: 26,692,449 km (0.091 R)
• M63: 26,834,118 km (0.043 R)
• M64: 26,976,236 km (0.103 R)
• M65: 28,409,832 km (0.05 R)
• M66: 29,135,831 km (0.106 R)
• M67: 29,281,838 km (0.086 R)
• M68: 29,672,289 km (0.076 R)
• M69: 29,966,249 km (0.116 R)
• M70: 30,655,745 km (0.11 R)
• M71: 31,350,627 km (0.034 R)
• M72: 31,600,007 km (0.074 R)
• M73: 32,000,481 km (0.07 R)
• M74: 32,402,600 km (0.061 R)
• M75: 33,669,993 km (0.052 R)
• M76: 34,027,831 km (0.053 R)

Asteroid Belt

Center: 6.35 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 7.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 566.5

Radius: 6.3

Gravity: 14.27 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 5.93 AU - 8.55 AU

Year: 12578 Days

Day: 16.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 52,426,634 km

• M1: 83,027 km (0.035 R)
• M2: 138,677 km (0.104 R)
• M3: 285,283 km (0.088 R)
• M4: 350,358 km (0.062 R)
• M5: 663,616 km (0.054 R)
• M6: 717,023 km (0.078 R)
• M7: 828,623 km (0.05 R)
• M8: 1,240,765 km (0.087 R)
• M9: 1,352,814 km (0.074 R)
• M10: 1,539,063 km (0.04 R)
• M11: 1,635,404 km (0.109 R)
• M12: 1,808,788 km (0.09 R)
• M13: 1,859,502 km (0.091 R)
• M14: 1,910,514 km (0.09 R)
• M15: 2,066,844 km (0.058 R)
• M16: 2,503,820 km (0.081 R)
• M17: 2,820,518 km (0.103 R)
• M18: 2,879,460 km (0.097 R)
• M19: 3,334,836 km (0.05 R)
• M20: 3,715,263 km (0.094 R)
• M21: 4,109,454 km (0.102 R)
• M22: 4,209,983 km (0.064 R)
• M23: 4,311,560 km (0.091 R)
• M24: 6,003,811 km (0.064 R)
• M25: 6,310,337 km (0.083 R)
• M26: 6,504,515 km (0.097 R)
• M27: 7,219,593 km (0.089 R)
• M28: 7,422,598 km (0.062 R)
• M29: 8,042,980 km (0.111 R)
• M30: 8,982,903 km (0.046 R)
• M31: 9,026,436 km (0.082 R)
• M32: 9,201,316 km (0.098 R)
• M33: 9,687,958 km (0.037 R)
• M34: 10,732,450 km (0.069 R)
• M35: 11,669,382 km (0.116 R)
• M36: 11,716,954 km (0.072 R)
• M37: 12,003,584 km (0.112 R)
• M38: 12,926,303 km (0.069 R)
• M39: 13,024,739 km (0.071 R)
• M40: 13,520,656 km (0.042 R)
• M41: 13,921,877 km (0.038 R)
• M42: 14,073,420 km (0.091 R)
• M43: 14,378,001 km (0.037 R)
• M44: 14,736,138 km (0.05 R)
• M45: 15,618,018 km (0.096 R)
• M46: 16,410,288 km (0.094 R)
• M47: 16,570,358 km (0.077 R)
• M48: 17,107,564 km (0.09 R)
• M49: 17,595,851 km (0.098 R)
• M50: 17,650,454 km (0.053 R)
• M51: 19,088,240 km (0.062 R)
• M52: 19,369,035 km (0.1 R)
• M53: 19,481,682 km (0.087 R)
• M54: 19,538,080 km (0.114 R)
• M55: 22,310,129 km (0.104 R)
• M56: 23,681,343 km (0.041 R)
• M57: 23,983,082 km (0.104 R)
• M58: 24,773,557 km (0.037 R)
• M59: 26,192,642 km (0.093 R)
• M60: 28,851,445 km (0.094 R)
• M61: 29,432,184 km (0.078 R)
• M62: 29,561,886 km (0.102 R)
• M63: 30,343,385 km (0.099 R)
• M64: 30,736,678 km (0.119 R)
• M65: 31,528,499 km (0.062 R)
• M66: 32,460,644 km (0.12 R)
• M67: 33,401,764 km (0.078 R)
• M68: 33,469,382 km (0.077 R)
• M69: 33,943,607 km (0.03 R)
• M70: 35,242,117 km (0.082 R)
• M71: 35,448,562 km (0.059 R)
• M72: 35,655,605 km (0.042 R)
• M73: 35,932,062 km (0.056 R)
• M74: 36,278,680 km (0.091 R)
• M75: 37,325,267 km (0.12 R)
• M76: 37,746,684 km (0.118 R)
• M77: 38,028,377 km (0.105 R)
• M78: 40,595,925 km (0.116 R)
• M79: 41,900,568 km (0.093 R)
• M80: 42,777,960 km (0.105 R)
• M81: 43,587,584 km (0.116 R)
• M82: 44,179,542 km (0.102 R)
• M83: 45,221,791 km (0.118 R)
• M84: 45,671,033 km (0.032 R)
• M85: 46,196,870 km (0.12 R)
• M86: 46,649,254 km (0.069 R)
• M87: 47,558,509 km (0.099 R)
• M88: 48,397,006 km (0.065 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: 506 - 17,706 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit