🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.47 AU - 0.65 AU

Year: 161 Days

Day: 27.4 Hours

Environment

Temp: 147 °C

Axial Tilt: 39.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.06 AU - 1.1 AU

Year: 432 Days

Day: 31.5 Hours

Environment

Temp: -17 °C

Axial Tilt: 13.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 86,603,293 km

• M1: 160,369 km (0.087 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.06 AU - 1.1 AU

Year: 432 Days

Day: 30.7 Hours

Environment

Temp: -10 °C

Axial Tilt: 19.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 86,603,293 km

• M1: 672,742 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.7

Radius: 13.3

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 7.63 AU - 8.01 AU

Year: 8419 Days

Day: 12.4 Hours

Environment

Temp: -176 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 86,603,293 km

• M1: 235,467 km (0.098 R)
• M2: 336,146 km (0.111 R)
• M3: 610,659 km (0.083 R)
• M4: 861,534 km (0.112 R)
• M5: 1,029,084 km (0.063 R)
• M6: 1,123,330 km (0.087 R)
• M7: 1,954,646 km (0.114 R)
• M8: 2,180,239 km (0.071 R)
• M9: 2,351,379 km (0.106 R)
• M10: 2,478,687 km (0.066 R)
• M11: 3,185,238 km (0.097 R)
• M12: 3,951,927 km (0.084 R)
• M13: 4,220,006 km (0.116 R)
• M14: 4,317,245 km (0.068 R)
• M15: 4,454,576 km (0.089 R)
• M16: 4,613,449 km (0.053 R)
• M17: 5,288,734 km (0.073 R)
• M18: 6,617,761 km (0.116 R)
• M19: 7,029,006 km (0.112 R)
• M20: 7,121,607 km (0.082 R)
• M21: 7,284,519 km (0.112 R)
• M22: 8,215,017 km (0.061 R)
• M23: 9,822,147 km (0.104 R)
• M24: 10,186,568 km (0.112 R)
• M25: 10,848,389 km (0.104 R)
• M26: 11,387,839 km (0.096 R)
• M27: 12,269,269 km (0.103 R)
• M28: 12,774,761 km (0.097 R)
• M29: 13,574,511 km (0.103 R)
• M30: 15,796,039 km (0.059 R)
• M31: 16,315,293 km (0.117 R)
• M32: 16,623,166 km (0.084 R)
• M33: 17,245,044 km (0.094 R)
• M34: 18,160,134 km (0.038 R)
• M35: 18,511,390 km (0.088 R)
• M36: 18,768,250 km (0.106 R)
• M37: 20,499,845 km (0.108 R)
• M38: 21,738,815 km (0.116 R)
• M39: 22,726,909 km (0.06 R)
• M40: 22,864,239 km (0.105 R)
• M41: 23,105,541 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.7

Radius: 13

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 8.79 AU - 9.11 AU

Year: 10309 Days

Day: 9.4 Hours

Environment

Temp: -175 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 86,603,293 km

• M1: 179,966 km (0.096 R)
• M2: 345,421 km (0.112 R)
• M3: 613,501 km (0.026 R)
• M4: 935,435 km (0.108 R)
• M5: 2,194,601 km (0.09 R)
• M6: 2,743,176 km (0.1 R)
• M7: 2,911,175 km (0.115 R)
• M8: 3,082,763 km (0.105 R)
• M9: 3,283,075 km (0.09 R)
• M10: 3,436,113 km (0.102 R)
• M11: 3,670,234 km (0.112 R)
• M12: 3,829,406 km (0.044 R)
• M13: 3,990,822 km (0.084 R)
• M14: 4,099,580 km (0.109 R)
• M15: 4,404,311 km (0.105 R)
• M16: 4,602,079 km (0.098 R)
• M17: 5,302,347 km (0.104 R)
• M18: 5,726,457 km (0.045 R)
• M19: 6,098,656 km (0.062 R)
• M20: 6,224,618 km (0.09 R)
• M21: 6,899,603 km (0.083 R)
• M22: 7,196,106 km (0.062 R)
• M23: 7,767,720 km (0.104 R)
• M24: 7,904,303 km (0.05 R)
• M25: 8,041,783 km (0.074 R)
• M26: 8,180,012 km (0.057 R)
• M27: 8,883,122 km (0.084 R)
• M28: 9,133,848 km (0.111 R)
• M29: 9,459,672 km (0.091 R)
• M30: 10,085,589 km (0.109 R)
• M31: 10,234,738 km (0.098 R)
• M32: 10,384,785 km (0.107 R)
• M33: 12,042,778 km (0.045 R)
• M34: 12,480,053 km (0.066 R)
• M35: 12,963,104 km (0.066 R)
• M36: 13,125,568 km (0.104 R)
• M37: 13,329,469 km (0.108 R)
• M38: 14,448,910 km (0.088 R)
• M39: 14,871,225 km (0.074 R)
• M40: 14,956,047 km (0.105 R)
• M41: 15,254,644 km (0.108 R)
• M42: 15,340,364 km (0.101 R)
• M43: 15,771,206 km (0.089 R)
• M44: 16,205,937 km (0.046 R)
• M45: 16,293,302 km (0.063 R)
• M46: 16,732,971 km (0.089 R)
• M47: 17,042,937 km (0.092 R)
• M48: 17,354,849 km (0.112 R)
• M49: 18,438,686 km (0.102 R)
• M50: 19,312,188 km (0.029 R)
• M51: 20,058,232 km (0.067 R)
• M52: 20,293,250 km (0.067 R)
• M53: 20,671,434 km (0.115 R)
• M54: 21,386,512 km (0.051 R)
• M55: 21,723,107 km (0.112 R)
• M56: 21,867,768 km (0.118 R)
• M57: 23,135,759 km (0.062 R)
• M58: 24,177,409 km (0.07 R)
• M59: 24,277,341 km (0.088 R)
• M60: 24,880,220 km (0.113 R)
• M61: 25,335,596 km (0.105 R)
• M62: 25,589,913 km (0.114 R)
• M63: 26,100,789 km (0.084 R)
• M64: 26,563,496 km (0.117 R)
• M65: 26,718,329 km (0.102 R)
• M66: 26,977,134 km (0.116 R)
• M67: 27,758,334 km (0.041 R)
• M68: 28,652,779 km (0.062 R)
• M69: 28,758,695 km (0.091 R)
• M70: 29,824,280 km (0.116 R)
• M71: 30,740,268 km (0.059 R)
• M72: 32,269,009 km (0.081 R)
• M73: 32,489,366 km (0.102 R)
• M74: 32,655,121 km (0.116 R)
• M75: 32,931,727 km (0.096 R)
• M76: 33,153,731 km (0.095 R)
• M77: 33,264,882 km (0.08 R)
• M78: 33,710,683 km (0.056 R)
• M79: 34,046,381 km (0.101 R)
• M80: 34,158,430 km (0.093 R)
• M81: 35,173,302 km (0.07 R)
• M82: 35,343,395 km (0.069 R)
• M83: 35,513,787 km (0.06 R)
• M84: 35,798,322 km (0.039 R)
• M85: 36,714,010 km (0.093 R)
• M86: 38,334,903 km (0.115 R)
• M87: 38,510,082 km (0.061 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 690.3

Radius: 6.3

Gravity: 17.39 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 9.93 AU - 13.49 AU

Year: 15428 Days

Day: 24.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 86,603,293 km

• M1: 152,291 km (0.055 R)
• M2: 669,750 km (0.083 R)
• M3: 1,583,194 km (0.036 R)
• M4: 2,166,028 km (0.087 R)
• M5: 2,577,571 km (0.114 R)
• M6: 3,186,734 km (0.042 R)
• M7: 3,292,500 km (0.116 R)
• M8: 3,399,462 km (0.105 R)
• M9: 3,989,027 km (0.107 R)
• M10: 4,729,686 km (0.106 R)
• M11: 5,219,021 km (0.105 R)
• M12: 5,767,297 km (0.069 R)
• M13: 5,983,017 km (0.079 R)
• M14: 6,646,185 km (0.115 R)
• M15: 7,613,185 km (0.071 R)
• M16: 7,945,143 km (0.071 R)
• M17: 8,137,077 km (0.074 R)
• M18: 8,233,568 km (0.117 R)
• M19: 8,969,440 km (0.059 R)
• M20: 9,019,256 km (0.073 R)
• M21: 9,219,418 km (0.088 R)
• M22: 9,983,115 km (0.076 R)
• M23: 10,398,698 km (0.092 R)
• M24: 10,555,925 km (0.083 R)
• M25: 10,714,050 km (0.049 R)
• M26: 12,116,680 km (0.095 R)
• M27: 13,177,628 km (0.089 R)
• M28: 13,978,425 km (0.056 R)
• M29: 14,384,583 km (0.062 R)
• M30: 14,971,755 km (0.105 R)
• M31: 17,149,152 km (0.078 R)
• M32: 17,459,418 km (0.103 R)
• M33: 17,771,479 km (0.104 R)
• M34: 18,846,190 km (0.118 R)
• M35: 19,294,685 km (0.11 R)
• M36: 20,398,866 km (0.061 R)
• M37: 20,727,533 km (0.092 R)
• M38: 21,057,845 km (0.1 R)
• M39: 21,389,952 km (0.113 R)
• M40: 21,456,673 km (0.089 R)
• M41: 21,590,114 km (0.11 R)
• M42: 21,656,985 km (0.081 R)
• M43: 21,790,875 km (0.074 R)
• M44: 21,857,894 km (0.094 R)
• M45: 22,532,132 km (0.066 R)
• M46: 23,350,283 km (0.037 R)
• M47: 24,178,008 km (0.114 R)
• M48: 24,805,122 km (0.114 R)
• M49: 25,437,622 km (0.03 R)
• M50: 26,217,924 km (0.051 R)
• M51: 26,862,242 km (0.115 R)
• M52: 27,801,867 km (0.074 R)
• M53: 28,020,280 km (0.081 R)
• M54: 28,166,137 km (0.097 R)
• M55: 28,385,598 km (0.099 R)
• M56: 28,899,616 km (0.098 R)
• M57: 29,120,722 km (0.09 R)
• M58: 30,910,810 km (0.077 R)
• M59: 30,986,057 km (0.097 R)
• M60: 32,123,749 km (0.095 R)
• M61: 32,429,378 km (0.119 R)
• M62: 32,582,566 km (0.111 R)
• M63: 33,816,898 km (0.098 R)
• M64: 38,013,268 km (0.118 R)
• M65: 38,904,572 km (0.057 R)
• M66: 39,393,607 km (0.101 R)
• M67: 39,720,778 km (0.075 R)
• M68: 40,790,253 km (0.12 R)
• M69: 40,872,981 km (0.045 R)
• M70: 42,454,081 km (0.095 R)
• M71: 42,621,780 km (0.088 R)
• M72: 42,873,553 km (0.035 R)
• M73: 43,716,537 km (0.092 R)
• M74: 45,076,531 km (0.118 R)
• M75: 45,247,522 km (0.045 R)
• M76: 47,576,910 km (0.097 R)
• M77: 48,624,694 km (0.052 R)
• M78: 48,887,836 km (0.076 R)
• M79: 49,063,464 km (0.118 R)
• M80: 49,151,428 km (0.042 R)
• M81: 49,327,355 km (0.097 R)
• M82: 50,653,989 km (0.097 R)
• M83: 51,009,732 km (0.096 R)
• M84: 51,813,223 km (0.088 R)
• M85: 53,071,341 km (0.07 R)
• M86: 53,161,548 km (0.076 R)
• M87: 53,342,262 km (0.119 R)
• M88: 53,613,633 km (0.113 R)
• M89: 54,703,753 km (0.102 R)
• M90: 56,260,468 km (0.059 R)
• M91: 57,831,694 km (0.115 R)
• M92: 58,949,490 km (0.06 R)
• M93: 59,417,282 km (0.075 R)
• M94: 59,604,878 km (0.084 R)
• M95: 60,451,004 km (0.036 R)
• M96: 63,587,173 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 348.2

Radius: 6.4

Gravity: 8.5 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 10.23 AU - 14.07 AU

Year: 16305 Days

Day: 21.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 86,603,293 km

• M1: 84,373 km (0.087 R)
• M2: 252,222 km (0.105 R)
• M3: 340,934 km (0.1 R)
• M4: 396,734 km (0.057 R)
• M5: 618,737 km (0.097 R)
• M6: 976,874 km (0.098 R)
• M7: 1,123,330 km (0.096 R)
• M8: 1,390,961 km (0.056 R)
• M9: 1,727,855 km (0.029 R)
• M10: 1,879,996 km (0.103 R)
• M11: 2,010,147 km (0.106 R)
• M12: 2,279,273 km (0.07 R)
• M13: 2,362,300 km (0.111 R)
• M14: 2,502,772 km (0.111 R)
• M15: 2,646,237 km (0.051 R)
• M16: 3,001,232 km (0.095 R)
• M17: 3,061,969 km (0.098 R)
• M18: 5,354,856 km (0.081 R)
• M19: 5,502,658 km (0.077 R)
• M20: 5,916,446 km (0.116 R)
• M21: 6,418,197 km (0.066 R)
• M22: 6,733,699 km (0.071 R)
• M23: 6,853,378 km (0.094 R)
• M24: 6,893,470 km (0.113 R)
• M25: 6,973,804 km (0.083 R)
• M26: 7,014,046 km (0.104 R)
• M27: 7,835,787 km (0.073 R)
• M28: 9,212,835 km (0.116 R)
• M29: 9,301,397 km (0.108 R)
• M30: 9,613,458 km (0.11 R)
• M31: 10,110,871 km (0.045 R)
• M32: 10,662,887 km (0.092 R)
• M33: 10,709,412 km (0.116 R)
• M34: 11,557,034 km (0.1 R)
• M35: 11,700,349 km (0.104 R)
• M36: 12,134,033 km (0.109 R)
• M37: 12,622,021 km (0.097 R)
• M38: 13,116,442 km (0.102 R)
• M39: 13,466,202 km (0.078 R)
• M40: 13,617,146 km (0.094 R)
• M41: 13,920,531 km (0.044 R)
• M42: 14,022,257 km (0.079 R)
• M43: 14,585,643 km (0.111 R)
• M44: 14,637,254 km (0.055 R)
• M45: 14,689,015 km (0.093 R)
• M46: 15,208,868 km (0.077 R)
• M47: 15,629,088 km (0.109 R)
• M48: 16,159,712 km (0.098 R)
• M49: 16,266,524 km (0.088 R)
• M50: 16,588,459 km (0.097 R)
• M51: 16,912,638 km (0.106 R)
• M52: 17,075,400 km (0.109 R)
• M53: 17,566,979 km (0.096 R)
• M54: 17,952,492 km (0.086 R)
• M55: 18,340,849 km (0.066 R)
• M56: 18,956,593 km (0.105 R)
• M57: 20,670,387 km (0.059 R)
• M58: 21,781,151 km (0.104 R)
• M59: 22,851,224 km (0.074 R)
• M60: 25,227,886 km (0.113 R)
• M61: 25,662,767 km (0.068 R)
• M62: 27,490,404 km (0.112 R)
• M63: 27,554,133 km (0.047 R)
• M64: 27,873,823 km (0.063 R)
• M65: 28,387,692 km (0.12 R)
• M66: 30,804,894 km (0.106 R)
• M67: 31,937,500 km (0.11 R)
• M68: 33,695,873 km (0.07 R)
• M69: 33,764,090 km (0.103 R)
• M70: 33,832,456 km (0.113 R)
• M71: 35,415,950 km (0.108 R)
• M72: 36,112,028 km (0.1 R)
• M73: 36,181,891 km (0.117 R)
• M74: 36,531,800 km (0.107 R)
• M75: 38,440,818 km (0.112 R)
• M76: 39,012,731 km (0.093 R)
• M77: 40,237,190 km (0.038 R)
• M78: 40,382,000 km (0.119 R)
• M79: 41,401,061 km (0.111 R)
• M80: 41,547,368 km (0.04 R)
• M81: 42,797,557 km (0.066 R)
• M82: 42,871,459 km (0.051 R)
• M83: 43,613,165 km (0.111 R)
• M84: 43,687,515 km (0.11 R)
• M85: 44,284,261 km (0.078 R)
• M86: 45,712,173 km (0.075 R)
• M87: 45,863,266 km (0.088 R)
• M88: 47,920,536 km (0.105 R)
• M89: 48,535,832 km (0.058 R)
• M90: 48,844,453 km (0.061 R)
• M91: 51,415,591 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 852.8

Radius: 7.7

Gravity: 14.38 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 13.89 AU - 15.57 AU

Year: 21766 Days

Day: 20.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 86,603,293 km

• M1: 146,456 km (0.073 R)
• M2: 254,616 km (0.1 R)
• M3: 458,368 km (0.073 R)
• M4: 1,529,339 km (0.109 R)
• M5: 1,767,050 km (0.092 R)
• M6: 2,277,478 km (0.084 R)
• M7: 2,913,867 km (0.12 R)
• M8: 3,513,456 km (0.1 R)
• M9: 4,971,436 km (0.094 R)
• M10: 5,999,473 km (0.117 R)
• M11: 6,320,510 km (0.084 R)
• M12: 6,428,819 km (0.111 R)
• M13: 7,035,139 km (0.083 R)
• M14: 7,147,337 km (0.112 R)
• M15: 7,260,284 km (0.07 R)
• M16: 7,316,832 km (0.098 R)
• M17: 7,430,526 km (0.061 R)
• M18: 7,833,244 km (0.092 R)
• M19: 8,066,467 km (0.062 R)
• M20: 8,184,051 km (0.06 R)
• M21: 9,328,474 km (0.108 R)
• M22: 9,950,802 km (0.075 R)
• M23: 10,203,472 km (0.098 R)
• M24: 11,564,514 km (0.089 R)
• M25: 12,503,091 km (0.071 R)
• M26: 13,745,651 km (0.07 R)
• M27: 13,886,123 km (0.054 R)
• M28: 13,956,584 km (0.115 R)
• M29: 14,027,044 km (0.119 R)
• M30: 14,310,383 km (0.031 R)
• M31: 16,420,610 km (0.087 R)
• M32: 17,170,544 km (0.108 R)
• M33: 17,931,549 km (0.037 R)
• M34: 18,470,849 km (0.048 R)
• M35: 18,703,623 km (0.108 R)
• M36: 20,440,006 km (0.106 R)
• M37: 20,520,190 km (0.049 R)
• M38: 21,003,242 km (0.104 R)
• M39: 21,653,245 km (0.062 R)
• M40: 21,980,565 km (0.068 R)
• M41: 22,723,318 km (0.103 R)
• M42: 22,806,345 km (0.059 R)
• M43: 23,474,299 km (0.096 R)
• M44: 23,558,224 km (0.047 R)
• M45: 24,914,927 km (0.103 R)
• M46: 25,775,713 km (0.059 R)
• M47: 27,703,431 km (0.106 R)
• M48: 29,224,542 km (0.089 R)
• M49: 30,405,917 km (0.051 R)
• M50: 30,956,437 km (0.112 R)
• M51: 32,160,550 km (0.044 R)
• M52: 33,852,951 km (0.098 R)
• M53: 36,932,274 km (0.088 R)
• M54: 37,912,738 km (0.119 R)
• M55: 38,307,377 km (0.105 R)
• M56: 38,901,879 km (0.077 R)
• M57: 39,999,628 km (0.062 R)
• M58: 41,411,533 km (0.088 R)
• M59: 41,817,841 km (0.1 R)
• M60: 42,429,995 km (0.109 R)
• M61: 45,116,324 km (0.12 R)
• M62: 45,953,773 km (0.096 R)
• M63: 46,269,275 km (0.11 R)
• M64: 46,479,909 km (0.084 R)
• M65: 47,325,885 km (0.1 R)
• M66: 48,818,423 km (0.056 R)
• M67: 49,786,022 km (0.083 R)
• M68: 50,434,529 km (0.064 R)
• M69: 52,836,622 km (0.096 R)
• M70: 53,719,249 km (0.113 R)
• M71: 55,052,465 km (0.067 R)
• M72: 56,621,448 km (0.119 R)
• M73: 56,734,095 km (0.119 R)
• M74: 59,002,597 km (0.114 R)
• M75: 60,147,769 km (0.083 R)
• M76: 60,262,809 km (0.094 R)
• M77: 61,995,452 km (0.096 R)
• M78: 62,344,015 km (0.052 R)
• M79: 66,576,588 km (0.09 R)
• M80: 67,888,411 km (0.047 R)
• M81: 68,367,424 km (0.043 R)
• M82: 70,901,163 km (0.079 R)
• M83: 71,508,829 km (0.076 R)
• M84: 72,607,177 km (0.115 R)
• M85: 73,219,780 km (0.099 R)
• M86: 74,450,073 km (0.079 R)
• M87: 76,681,924 km (0.113 R)
• M88: 79,691,683 km (0.059 R)
• M89: 80,197,025 km (0.094 R)
• M90: 80,957,132 km (0.034 R)
• M91: 82,484,376 km (0.058 R)
• M92: 82,995,552 km (0.086 R)
• M93: 83,251,514 km (0.055 R)
• M94: 83,379,570 km (0.051 R)
• M95: 84,021,046 km (0.089 R)
• M96: 84,406,709 km (0.085 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 271 - 17,391 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit