🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 707.7

Radius: 11.4

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.51 AU - 0.63 AU

Year: 292 Days

Day: 10.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 47,849,133 km

• M1: 150,795 km (0.115 R)
• M2: 222,452 km (0.077 R)
• M3: 297,550 km (0.09 R)
• M4: 369,956 km (0.101 R)
• M5: 493,075 km (0.038 R)
• M6: 582,534 km (0.067 R)
• M7: 678,277 km (0.1 R)
• M8: 762,949 km (0.101 R)
• M9: 851,511 km (0.092 R)
• M10: 985,700 km (0.102 R)
• M11: 1,075,459 km (0.111 R)
• M12: 1,188,705 km (0.117 R)
• M13: 1,276,519 km (0.061 R)
• M14: 1,427,912 km (0.117 R)
• M15: 1,499,120 km (0.089 R)
• M16: 1,589,926 km (0.103 R)
• M17: 1,692,251 km (0.095 R)
• M18: 1,767,948 km (0.057 R)
• M19: 1,874,162 km (0.116 R)
• M20: 2,195,349 km (0.071 R)
• M21: 2,362,599 km (0.058 R)
• M22: 2,517,882 km (0.066 R)
• M23: 2,599,712 km (0.066 R)
• M24: 2,698,895 km (0.084 R)
• M25: 2,987,170 km (0.051 R)
• M26: 3,079,771 km (0.088 R)
• M27: 3,161,452 km (0.105 R)
• M28: 3,339,174 km (0.051 R)
• M29: 3,435,366 km (0.119 R)
• M30: 3,581,373 km (0.048 R)
• M31: 3,655,125 km (0.061 R)
• M32: 3,729,475 km (0.109 R)
• M33: 3,816,840 km (0.052 R)
• M34: 3,904,953 km (0.051 R)
• M35: 4,102,273 km (0.045 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.5

Radius: 9.6

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.01 AU - 1.33 AU

Year: 858 Days

Day: 8.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 47,849,133 km

• M1: 120,127 km (0.111 R)
• M2: 198,666 km (0.052 R)
• M3: 278,402 km (0.061 R)
• M4: 374,892 km (0.056 R)
• M5: 476,469 km (0.098 R)
• M6: 608,415 km (0.119 R)
• M7: 674,238 km (0.078 R)
• M8: 808,427 km (0.112 R)
• M9: 969,693 km (0.084 R)
• M10: 1,116,599 km (0.077 R)
• M11: 1,284,447 km (0.084 R)
• M12: 1,523,654 km (0.117 R)
• M13: 1,754,933 km (0.116 R)
• M14: 1,928,466 km (0.076 R)
• M15: 2,415,557 km (0.097 R)
• M16: 2,807,802 km (0.1 R)
• M17: 2,869,287 km (0.064 R)
• M18: 2,966,675 km (0.12 R)
• M19: 3,047,309 km (0.103 R)
• M20: 3,201,694 km (0.045 R)
• M21: 3,377,322 km (0.106 R)
• M22: 3,757,300 km (0.08 R)
• M23: 3,864,263 km (0.082 R)
• M24: 3,932,928 km (0.092 R)
• M25: 4,041,536 km (0.115 R)
• M26: 4,121,122 km (0.041 R)
• M27: 4,201,307 km (0.066 R)
• M28: 4,383,517 km (0.083 R)
• M29: 4,455,174 km (0.061 R)
• M30: 4,599,536 km (0.073 R)
• M31: 4,682,862 km (0.073 R)
• M32: 5,084,981 km (0.107 R)
• M33: 5,181,921 km (0.088 R)
• M34: 5,268,538 km (0.096 R)
• M35: 5,333,912 km (0.032 R)
• M36: 5,675,743 km (0.107 R)
• M37: 5,798,713 km (0.09 R)
• M38: 5,922,580 km (0.065 R)
• M39: 6,013,386 km (0.117 R)
• M40: 6,311,235 km (0.063 R)
• M41: 6,473,698 km (0.118 R)
• M42: 6,578,866 km (0.07 R)
• M43: 6,684,482 km (0.081 R)
• M44: 6,838,268 km (0.119 R)
• M45: 6,933,413 km (0.089 R)
• M46: 7,233,805 km (0.102 R)
• M47: 7,599,871 km (0.061 R)
• M48: 7,698,456 km (0.102 R)
• M49: 7,772,806 km (0.061 R)
• M50: 8,122,566 km (0.111 R)
• M51: 8,185,547 km (0.045 R)
• M52: 8,261,243 km (0.101 R)
• M53: 8,350,104 km (0.026 R)
• M54: 8,643,915 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131

Radius: 15

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.57 AU - 1.93 AU

Year: 1570 Days

Day: 8.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 47,849,133 km

• M1: 187,297 km (0.108 R)
• M2: 290,519 km (0.064 R)
• M3: 446,101 km (0.12 R)
• M4: 546,032 km (0.113 R)
• M5: 679,623 km (0.096 R)
• M6: 806,183 km (0.108 R)
• M7: 974,630 km (0.077 R)
• M8: 1,075,309 km (0.094 R)
• M9: 1,275,771 km (0.087 R)
• M10: 1,406,370 km (0.092 R)
• M11: 1,508,994 km (0.117 R)
• M12: 1,736,233 km (0.062 R)
• M13: 1,889,421 km (0.096 R)
• M14: 1,996,683 km (0.067 R)
• M15: 2,106,039 km (0.12 R)
• M16: 2,202,529 km (0.066 R)
• M17: 2,331,184 km (0.106 R)
• M18: 2,525,062 km (0.055 R)
• M19: 2,772,946 km (0.046 R)
• M20: 2,987,320 km (0.096 R)
• M21: 3,301,924 km (0.077 R)
• M22: 3,415,170 km (0.067 R)
• M23: 3,520,786 km (0.079 R)
• M24: 3,899,418 km (0.109 R)
• M25: 4,047,221 km (0.117 R)
• M26: 4,196,819 km (0.035 R)
• M27: 4,329,362 km (0.107 R)
• M28: 4,588,915 km (0.119 R)
• M29: 4,686,452 km (0.113 R)
• M30: 4,794,462 km (0.11 R)
• M31: 4,903,369 km (0.118 R)
• M32: 5,063,290 km (0.106 R)
• M33: 5,255,373 km (0.104 R)
• M34: 5,543,050 km (0.117 R)
• M35: 5,846,434 km (0.09 R)
• M36: 5,941,728 km (0.078 R)
• M37: 6,037,620 km (0.071 R)
• M38: 6,187,667 km (0.071 R)
• M39: 6,645,586 km (0.085 R)
• M40: 6,800,719 km (0.078 R)
• M41: 7,013,148 km (0.111 R)
• M42: 7,137,165 km (0.097 R)
• M43: 7,398,811 km (0.115 R)
• M44: 7,536,741 km (0.073 R)
• M45: 7,652,230 km (0.12 R)
• M46: 7,768,318 km (0.059 R)
• M47: 7,873,336 km (0.086 R)
• M48: 8,002,289 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384.3

Radius: 14.7

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.5 AU - 2.32 AU

Year: 1790 Days

Day: 6.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 47,849,133 km

• M1: 197,020 km (0.098 R)
• M2: 289,322 km (0.096 R)
• M3: 383,120 km (0.092 R)
• M4: 539,450 km (0.057 R)
• M5: 665,411 km (0.101 R)
• M6: 873,203 km (0.097 R)
• M7: 1,019,809 km (0.077 R)
• M8: 1,159,533 km (0.104 R)
• M9: 1,373,757 km (0.111 R)
• M10: 1,656,048 km (0.118 R)
• M11: 1,757,625 km (0.092 R)
• M12: 1,851,872 km (0.089 R)
• M13: 2,236,638 km (0.069 R)
• M14: 2,391,472 km (0.079 R)
• M15: 2,550,195 km (0.111 R)
• M16: 2,979,242 km (0.104 R)
• M17: 3,093,086 km (0.085 R)
• M18: 3,278,437 km (0.069 R)
• M19: 3,443,593 km (0.111 R)
• M20: 3,575,389 km (0.08 R)
• M21: 3,733,215 km (0.097 R)
• M22: 3,980,949 km (0.074 R)
• M23: 4,132,192 km (0.071 R)
• M24: 4,676,729 km (0.105 R)
• M25: 4,944,210 km (0.072 R)
• M26: 5,327,180 km (0.041 R)
• M27: 5,452,394 km (0.111 R)
• M28: 5,748,448 km (0.086 R)
• M29: 5,876,803 km (0.09 R)
• M30: 6,006,355 km (0.108 R)
• M31: 6,297,472 km (0.077 R)
• M32: 6,415,205 km (0.076 R)
• M33: 6,593,377 km (0.099 R)
• M34: 6,818,222 km (0.109 R)
• M35: 6,939,247 km (0.111 R)
• M36: 7,061,019 km (0.096 R)
• M37: 7,492,759 km (0.088 R)
• M38: 8,333,499 km (0.112 R)
• M39: 8,691,487 km (0.09 R)
• M40: 8,806,378 km (0.086 R)
• M41: 8,971,384 km (0.072 R)
• M42: 9,104,227 km (0.092 R)
• M43: 9,321,593 km (0.103 R)
• M44: 9,422,422 km (0.037 R)
• M45: 9,897,844 km (0.049 R)
• M46: 10,104,139 km (0.066 R)
• M47: 10,346,488 km (0.115 R)
• M48: 10,503,416 km (0.093 R)
• M49: 10,696,098 km (0.064 R)
• M50: 10,890,127 km (0.054 R)
• M51: 11,014,143 km (0.07 R)
• M52: 11,120,956 km (0.099 R)
• M53: 11,986,978 km (0.114 R)
• M54: 12,096,783 km (0.06 R)
• M55: 12,262,238 km (0.097 R)
• M56: 12,354,391 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.4

Radius: 12.1

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 2.06 AU - 2.4 AU

Year: 2259 Days

Day: 7.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 47,849,133 km

• M1: 153,039 km (0.092 R)
• M2: 260,599 km (0.098 R)
• M3: 349,909 km (0.101 R)
• M4: 480,957 km (0.077 R)
• M5: 582,085 km (0.101 R)
• M6: 834,008 km (0.109 R)
• M7: 926,160 km (0.065 R)
• M8: 1,094,308 km (0.072 R)
• M9: 1,234,631 km (0.039 R)
• M10: 1,351,318 km (0.111 R)
• M11: 1,461,870 km (0.089 R)
• M12: 1,660,237 km (0.095 R)
• M13: 1,856,510 km (0.058 R)
• M14: 1,980,377 km (0.09 R)
• M15: 2,153,761 km (0.059 R)
• M16: 2,272,392 km (0.094 R)
• M17: 2,368,733 km (0.111 R)
• M18: 2,590,886 km (0.081 R)
• M19: 2,666,582 km (0.082 R)
• M20: 2,858,815 km (0.077 R)
• M21: 3,029,357 km (0.102 R)
• M22: 3,136,020 km (0.106 R)
• M23: 3,547,115 km (0.06 R)
• M24: 3,673,825 km (0.117 R)
• M25: 4,063,228 km (0.09 R)
• M26: 4,181,260 km (0.1 R)
• M27: 4,315,300 km (0.094 R)
• M28: 4,466,095 km (0.111 R)
• M29: 4,542,091 km (0.057 R)
• M30: 4,695,428 km (0.078 R)
• M31: 5,181,921 km (0.035 R)
• M32: 5,358,446 km (0.088 R)
• M33: 5,455,535 km (0.109 R)
• M34: 6,459,187 km (0.043 R)
• M35: 6,736,392 km (0.11 R)
• M36: 7,053,091 km (0.107 R)
• M37: 7,302,770 km (0.089 R)
• M38: 7,573,542 km (0.106 R)
• M39: 7,719,400 km (0.114 R)
• M40: 8,500,001 km (0.066 R)
• M41: 8,689,692 km (0.081 R)
• M42: 9,034,515 km (0.098 R)
• M43: 9,423,020 km (0.058 R)
• M44: 9,560,351 km (0.094 R)
• M45: 9,718,027 km (0.038 R)
• M46: 9,836,808 km (0.063 R)
• M47: 10,156,199 km (0.112 R)
• M48: 10,438,341 km (0.119 R)
• M49: 10,969,413 km (0.098 R)
• M50: 11,072,486 km (0.073 R)
• M51: 11,238,241 km (0.03 R)
• M52: 11,488,368 km (0.05 R)
• M53: 11,761,385 km (0.112 R)
• M54: 11,930,430 km (0.11 R)
• M55: 12,057,738 km (0.117 R)
• M56: 12,143,009 km (0.082 R)
• M57: 12,636,532 km (0.11 R)
• M58: 12,787,925 km (0.096 R)
• M59: 12,874,842 km (0.056 R)
• M60: 13,158,479 km (0.097 R)
• M61: 13,444,211 km (0.09 R)
• M62: 13,554,614 km (0.06 R)
• M63: 13,865,479 km (0.083 R)
• M64: 14,291,234 km (0.073 R)
• M65: 14,516,977 km (0.1 R)
• M66: 14,698,440 km (0.065 R)
• M67: 15,178,350 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.2

Radius: 8

Gravity: 7.36 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 4.78 AU - 4.78 AU

Year: 7088 Days

Day: 13.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 47,849,133 km

• M1: 102,475 km (0.114 R)
• M2: 282,590 km (0.102 R)
• M3: 357,838 km (0.076 R)
• M4: 508,633 km (0.117 R)
• M5: 642,523 km (0.111 R)
• M6: 694,134 km (0.102 R)
• M7: 788,381 km (0.12 R)
• M8: 844,181 km (0.067 R)
• M9: 1,144,125 km (0.101 R)
• M10: 1,273,377 km (0.054 R)
• M11: 1,339,799 km (0.076 R)
• M12: 1,546,244 km (0.068 R)
• M13: 1,671,457 km (0.119 R)
• M14: 1,744,610 km (0.075 R)
• M15: 1,800,111 km (0.11 R)
• M16: 1,951,355 km (0.104 R)
• M17: 2,347,340 km (0.029 R)
• M18: 2,533,739 km (0.075 R)
• M19: 2,746,617 km (0.101 R)
• M20: 3,009,760 km (0.045 R)
• M21: 3,280,981 km (0.037 R)
• M22: 3,823,123 km (0.109 R)
• M23: 4,067,417 km (0.117 R)
• M24: 4,830,964 km (0.065 R)
• M25: 4,962,461 km (0.04 R)
• M26: 5,202,266 km (0.039 R)
• M27: 5,637,895 km (0.113 R)
• M28: 5,804,397 km (0.108 R)
• M29: 5,944,271 km (0.111 R)
• M30: 6,284,756 km (0.057 R)
• M31: 6,428,520 km (0.096 R)
• M32: 6,544,308 km (0.078 R)
• M33: 6,631,524 km (0.117 R)
• M34: 7,043,965 km (0.113 R)
• M35: 7,893,831 km (0.068 R)
• M36: 7,986,731 km (0.085 R)
• M37: 8,267,975 km (0.118 R)
• M38: 8,330,806 km (0.104 R)
• M39: 8,520,496 km (0.107 R)
• M40: 9,261,006 km (0.037 R)
• M41: 9,854,760 km (0.066 R)
• M42: 10,189,859 km (0.072 R)
• M43: 10,257,477 km (0.058 R)
• M44: 10,392,863 km (0.107 R)
• M45: 11,252,752 km (0.105 R)
• M46: 11,427,482 km (0.089 R)
• M47: 11,850,545 km (0.105 R)
• M48: 11,992,663 km (0.108 R)
• M49: 12,675,577 km (0.114 R)
• M50: 13,408,008 km (0.098 R)
• M51: 14,003,857 km (0.101 R)
• M52: 14,191,901 km (0.117 R)
• M53: 14,608,382 km (0.075 R)
• M54: 14,799,119 km (0.068 R)
• M55: 16,393,383 km (0.099 R)
• M56: 17,110,406 km (0.028 R)
• M57: 17,553,515 km (0.077 R)
• M58: 17,756,220 km (0.113 R)
• M59: 18,164,024 km (0.079 R)
• M60: 18,410,262 km (0.098 R)
• M61: 20,248,820 km (0.105 R)
• M62: 20,546,669 km (0.112 R)
• M63: 23,336,669 km (0.085 R)
• M64: 24,007,616 km (0.107 R)
• M65: 24,097,524 km (0.102 R)
• M66: 25,322,581 km (0.03 R)
• M67: 25,505,839 km (0.101 R)
• M68: 25,781,547 km (0.097 R)
• M69: 26,058,154 km (0.093 R)
• M70: 26,289,432 km (0.082 R)
• M71: 26,521,459 km (0.111 R)
• M72: 26,660,884 km (0.083 R)
• M73: 26,893,957 km (0.08 R)
• M74: 27,597,217 km (0.07 R)
• M75: 27,785,710 km (0.082 R)
• M76: 28,306,460 km (0.032 R)
• M77: 28,496,599 km (0.095 R)
• M78: 29,309,514 km (0.056 R)
• M79: 29,839,689 km (0.115 R)
• M80: 30,227,147 km (0.116 R)
• M81: 31,203,124 km (0.077 R)
• M82: 31,596,417 km (0.098 R)
• M83: 32,736,352 km (0.105 R)
• M84: 32,836,134 km (0.033 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.9

Radius: 12.3

Gravity: 5.79 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 4.98 AU - 6.08 AU

Year: 8820 Days

Day: 9.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 47,849,133 km

• M1: 438,920 km (0.105 R)
• M2: 623,524 km (0.101 R)
• M3: 751,430 km (0.117 R)
• M4: 1,398,142 km (0.115 R)
• M5: 1,571,675 km (0.041 R)
• M6: 2,362,898 km (0.101 R)
• M7: 2,440,390 km (0.099 R)
• M8: 3,035,490 km (0.069 R)
• M9: 3,349,646 km (0.101 R)
• M10: 3,525,723 km (0.07 R)
• M11: 3,917,519 km (0.106 R)
• M12: 4,387,107 km (0.05 R)
• M13: 4,743,000 km (0.09 R)
• M14: 5,517,319 km (0.075 R)
• M15: 5,621,290 km (0.108 R)
• M16: 5,796,020 km (0.079 R)
• M17: 6,294,779 km (0.115 R)
• M18: 6,512,743 km (0.096 R)
• M19: 6,733,400 km (0.105 R)
• M20: 7,873,037 km (0.113 R)
• M21: 8,187,043 km (0.078 R)
• M22: 8,949,244 km (0.11 R)
• M23: 9,112,754 km (0.09 R)
• M24: 9,483,907 km (0.116 R)
• M25: 9,818,258 km (0.059 R)
• M26: 9,944,518 km (0.081 R)
• M27: 10,369,676 km (0.114 R)
• M28: 11,724,883 km (0.085 R)
• M29: 12,537,349 km (0.049 R)
• M30: 12,950,388 km (0.102 R)
• M31: 13,089,066 km (0.114 R)
• M32: 13,648,861 km (0.048 R)
• M33: 14,121,141 km (0.103 R)
• M34: 14,598,957 km (0.09 R)
• M35: 15,033,539 km (0.038 R)
• M36: 15,325,703 km (0.05 R)
• M37: 16,312,900 km (0.118 R)
• M38: 17,626,818 km (0.068 R)
• M39: 17,986,451 km (0.115 R)
• M40: 19,237,538 km (0.033 R)
• M41: 21,603,578 km (0.069 R)
• M42: 22,320,152 km (0.065 R)
• M43: 22,542,155 km (0.085 R)
• M44: 22,764,906 km (0.116 R)
• M45: 23,606,843 km (0.116 R)
• M46: 24,458,953 km (0.085 R)
• M47: 25,148,000 km (0.095 R)
• M48: 25,263,490 km (0.081 R)
• M49: 25,494,918 km (0.101 R)
• M50: 25,668,900 km (0.084 R)
• M51: 26,957,237 km (0.114 R)
• M52: 27,549,794 km (0.05 R)
• M53: 27,788,104 km (0.117 R)
• M54: 29,840,586 km (0.077 R)
• M55: 31,070,580 km (0.119 R)
• M56: 32,129,135 km (0.117 R)
• M57: 32,505,523 km (0.117 R)
• M58: 33,326,217 km (0.087 R)
• M59: 33,898,279 km (0.115 R)
• M60: 34,153,643 km (0.061 R)
• M61: 34,345,577 km (0.055 R)
• M62: 34,859,146 km (0.094 R)
• M63: 35,052,277 km (0.093 R)
• M64: 35,634,213 km (0.109 R)
• M65: 36,741,835 km (0.105 R)
• M66: 36,938,557 km (0.057 R)
• M67: 37,069,904 km (0.087 R)
• M68: 40,673,267 km (0.104 R)
• M69: 41,557,241 km (0.107 R)
• M70: 42,310,317 km (0.078 R)
• M71: 42,654,093 km (0.114 R)
• M72: 43,621,542 km (0.034 R)
• M73: 43,829,783 km (0.044 R)
• M74: 44,386,735 km (0.076 R)
• M75: 45,226,578 km (0.052 R)
• M76: 45,719,054 km (0.081 R)
• M77: 46,283,786 km (0.11 R)
• M78: 46,708,943 km (0.106 R)
• M79: 47,777,670 km (0.088 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 191 - 14,984 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit