🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.69 AU - 0.87 AU

Year: 254 Days

Day: 34.4 Hours

Environment

Temp: 185 °C

Axial Tilt: 8.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 81,799,134 km

• M1: 121,473 km (0.088 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.94 AU - 1.46 AU

Year: 485 Days

Day: 26.8 Hours

Environment

Temp: 12 °C

Axial Tilt: 35.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 81,799,134 km

• M1: 104,569 km (0.104 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.32 AU - 2.18 AU

Year: 854 Days

Day: 35.1 Hours

Environment

Temp: -67 °C

Axial Tilt: 2.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,799,134 km

• M1: 116,088 km (0.108 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 3.43 AU - 3.79 AU

Year: 2531 Days

Day: 20.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 126

Radius: 13.6

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 3.79 AU - 5.71 AU

Year: 3820 Days

Day: 11.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 81,799,134 km

• M1: 242,797 km (0.072 R)
• M2: 327,619 km (0.113 R)
• M3: 508,184 km (0.059 R)
• M4: 604,226 km (0.107 R)
• M5: 736,620 km (0.065 R)
• M6: 920,027 km (0.092 R)
• M7: 1,171,950 km (0.103 R)
• M8: 1,352,963 km (0.087 R)
• M9: 1,920,537 km (0.094 R)
• M10: 2,114,716 km (0.088 R)
• M11: 2,281,517 km (0.089 R)
• M12: 2,522,669 km (0.057 R)
• M13: 2,616,916 km (0.082 R)
• M14: 3,399,761 km (0.11 R)
• M15: 3,517,345 km (0.11 R)
• M16: 3,609,797 km (0.1 R)
• M17: 3,987,980 km (0.094 R)
• M18: 4,112,296 km (0.074 R)
• M19: 4,855,797 km (0.08 R)
• M20: 4,944,359 km (0.091 R)
• M21: 5,137,939 km (0.057 R)
• M22: 5,410,357 km (0.066 R)
• M23: 5,703,120 km (0.084 R)
• M24: 5,937,839 km (0.104 R)
• M25: 6,096,263 km (0.088 R)
• M26: 6,417,150 km (0.091 R)
• M27: 6,514,538 km (0.106 R)
• M28: 6,661,444 km (0.092 R)
• M29: 6,992,204 km (0.105 R)
• M30: 8,121,369 km (0.107 R)
• M31: 8,368,206 km (0.111 R)
• M32: 8,707,194 km (0.113 R)
• M33: 8,815,204 km (0.088 R)
• M34: 10,335,567 km (0.033 R)
• M35: 10,853,924 km (0.045 R)
• M36: 11,145,640 km (0.079 R)
• M37: 11,617,771 km (0.043 R)
• M38: 11,816,287 km (0.099 R)
• M39: 12,237,255 km (0.113 R)
• M40: 12,703,851 km (0.077 R)
• M41: 12,928,996 km (0.101 R)
• M42: 13,134,992 km (0.117 R)
• M43: 13,633,602 km (0.036 R)
• M44: 13,906,319 km (0.093 R)
• M45: 14,096,159 km (0.065 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.7

Radius: 12.2

Gravity: 5.69 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 5.08 AU - 5.96 AU

Year: 4785 Days

Day: 8.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 81,799,134 km

• M1: 154,535 km (0.12 R)
• M2: 322,683 km (0.084 R)
• M3: 411,693 km (0.106 R)
• M4: 491,429 km (0.074 R)
• M5: 577,897 km (0.074 R)
• M6: 658,829 km (0.091 R)
• M7: 1,040,004 km (0.049 R)
• M8: 1,171,950 km (0.109 R)
• M9: 1,294,321 km (0.057 R)
• M10: 1,585,887 km (0.083 R)
• M11: 1,774,680 km (0.086 R)
• M12: 2,081,505 km (0.034 R)
• M13: 2,464,176 km (0.086 R)
• M14: 2,643,843 km (0.027 R)
• M15: 2,766,065 km (0.109 R)
• M16: 3,208,874 km (0.068 R)
• M17: 3,834,044 km (0.07 R)
• M18: 4,184,552 km (0.098 R)
• M19: 5,662,279 km (0.096 R)
• M20: 5,874,260 km (0.107 R)
• M21: 5,981,222 km (0.084 R)
• M22: 6,061,855 km (0.102 R)
• M23: 6,278,772 km (0.096 R)
• M24: 6,581,110 km (0.119 R)
• M25: 6,664,436 km (0.115 R)
• M26: 6,804,160 km (0.06 R)
• M27: 7,604,209 km (0.026 R)
• M28: 7,838,330 km (0.061 R)
• M29: 8,646,009 km (0.069 R)
• M30: 8,859,784 km (0.098 R)
• M31: 9,137,139 km (0.092 R)
• M32: 9,323,687 km (0.107 R)
• M33: 9,637,394 km (0.114 R)
• M34: 9,890,962 km (0.116 R)
• M35: 10,178,789 km (0.064 R)
• M36: 10,307,592 km (0.084 R)
• M37: 10,926,928 km (0.117 R)
• M38: 11,491,360 km (0.072 R)
• M39: 11,963,342 km (0.088 R)
• M40: 12,787,327 km (0.089 R)
• M41: 12,961,160 km (0.082 R)
• M42: 13,066,028 km (0.119 R)
• M43: 13,417,283 km (0.065 R)
• M44: 14,417,196 km (0.067 R)
• M45: 14,634,711 km (0.102 R)
• M46: 15,626,545 km (0.077 R)
• M47: 15,775,245 km (0.113 R)
• M48: 16,792,062 km (0.041 R)
• M49: 17,020,797 km (0.06 R)
• M50: 17,365,919 km (0.063 R)
• M51: 17,868,718 km (0.083 R)
• M52: 18,376,154 km (0.084 R)
• M53: 18,888,377 km (0.077 R)
• M54: 19,007,307 km (0.084 R)
• M55: 19,445,330 km (0.077 R)
• M56: 20,290,857 km (0.101 R)
• M57: 20,453,170 km (0.073 R)
• M58: 20,575,242 km (0.032 R)
• M59: 21,809,574 km (0.045 R)
• M60: 22,519,566 km (0.108 R)
• M61: 22,814,274 km (0.116 R)
• M62: 23,620,307 km (0.082 R)
• M63: 24,651,784 km (0.062 R)
• M64: 24,738,401 km (0.108 R)
• M65: 25,566,276 km (0.079 R)
• M66: 25,654,090 km (0.107 R)
• M67: 26,226,452 km (0.115 R)
• M68: 27,026,052 km (0.114 R)
• M69: 27,294,281 km (0.073 R)
• M70: 27,878,610 km (0.047 R)
• M71: 28,421,651 km (0.079 R)
• M72: 28,512,457 km (0.067 R)
• M73: 28,922,504 km (0.108 R)
• M74: 29,197,016 km (0.099 R)
• M75: 29,979,264 km (0.098 R)
• M76: 30,210,692 km (0.114 R)
• M77: 30,768,542 km (0.046 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 394.7

Radius: 4.2

Gravity: 22.38 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 12.4 AU - 12.98 AU

Year: 16679 Days

Day: 24.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 81,799,134 km

• M1: 78,240 km (0.112 R)
• M2: 500,554 km (0.117 R)
• M3: 794,963 km (0.094 R)
• M4: 855,401 km (0.056 R)
• M5: 959,670 km (0.039 R)
• M6: 1,344,286 km (0.097 R)
• M7: 2,411,218 km (0.106 R)
• M8: 2,499,481 km (0.09 R)
• M9: 2,832,187 km (0.113 R)
• M10: 3,178,805 km (0.102 R)
• M11: 3,538,738 km (0.119 R)
• M12: 4,015,207 km (0.103 R)
• M13: 4,915,337 km (0.095 R)
• M14: 4,952,587 km (0.069 R)
• M15: 6,153,708 km (0.035 R)
• M16: 6,973,954 km (0.119 R)
• M17: 7,311,596 km (0.037 R)
• M18: 7,354,082 km (0.083 R)
• M19: 7,654,474 km (0.055 R)
• M20: 8,355,939 km (0.052 R)
• M21: 8,534,559 km (0.103 R)
• M22: 9,123,525 km (0.087 R)
• M23: 9,215,229 km (0.082 R)
• M24: 9,261,305 km (0.059 R)
• M25: 9,446,058 km (0.113 R)
• M26: 9,492,434 km (0.12 R)
• M27: 10,149,916 km (0.11 R)
• M28: 11,212,211 km (0.05 R)
• M29: 11,409,231 km (0.049 R)
• M30: 13,597,250 km (0.083 R)
• M31: 14,018,368 km (0.098 R)
• M32: 15,800,078 km (0.119 R)
• M33: 16,131,587 km (0.104 R)
• M34: 17,651,651 km (0.114 R)
• M35: 18,923,532 km (0.095 R)
• M36: 19,099,310 km (0.051 R)
• M37: 20,224,735 km (0.078 R)
• M38: 20,404,402 km (0.089 R)
• M39: 20,644,805 km (0.12 R)
• M40: 20,886,107 km (0.106 R)
• M41: 21,249,779 km (0.101 R)
• M42: 21,554,510 km (0.091 R)
• M43: 22,663,479 km (0.043 R)
• M44: 23,601,607 km (0.116 R)
• M45: 23,790,699 km (0.112 R)
• M46: 23,853,829 km (0.07 R)
• M47: 24,233,957 km (0.049 R)
• M48: 24,424,844 km (0.079 R)
• M49: 24,552,302 km (0.093 R)
• M50: 25,193,179 km (0.051 R)
• M51: 27,412,613 km (0.094 R)
• M52: 27,677,850 km (0.114 R)
• M53: 28,277,588 km (0.101 R)
• M54: 28,545,518 km (0.103 R)
• M55: 28,949,133 km (0.096 R)
• M56: 29,286,775 km (0.089 R)
• M57: 29,966,099 km (0.045 R)
• M58: 30,994,884 km (0.093 R)
• M59: 31,340,305 km (0.094 R)
• M60: 31,617,660 km (0.076 R)
• M61: 31,826,049 km (0.068 R)
• M62: 32,035,038 km (0.104 R)
• M63: 32,664,695 km (0.111 R)
• M64: 32,875,478 km (0.118 R)
• M65: 33,581,281 km (0.115 R)
• M66: 35,584,098 km (0.107 R)
• M67: 35,801,014 km (0.1 R)
• M68: 37,625,360 km (0.106 R)
• M69: 38,437,527 km (0.089 R)
• M70: 38,734,329 km (0.109 R)
• M71: 39,554,425 km (0.041 R)
• M72: 39,854,070 km (0.117 R)
• M73: 40,304,958 km (0.101 R)
• M74: 41,363,512 km (0.1 R)
• M75: 43,507,998 km (0.103 R)
• M76: 43,739,874 km (0.088 R)
• M77: 44,438,047 km (0.077 R)
• M78: 46,870,958 km (0.101 R)
• M79: 48,303,357 km (0.06 R)
• M80: 48,383,243 km (0.11 R)
• M81: 48,543,462 km (0.1 R)
• M82: 49,024,868 km (0.062 R)
• M83: 49,105,202 km (0.093 R)
• M84: 49,507,919 km (0.119 R)
• M85: 49,669,186 km (0.065 R)
• M86: 51,537,364 km (0.118 R)
• M87: 51,619,044 km (0.119 R)
• M88: 52,110,473 km (0.045 R)
• M89: 54,091,448 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 350.2

Radius: 3.9

Gravity: 23.02 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 10.04 AU - 16.1 AU

Year: 17434 Days

Day: 17 Hours

Environment

Temp: -192 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 81,799,134 km

• M1: 62,532 km (0.12 R)
• M2: 182,509 km (0.099 R)
• M3: 308,321 km (0.053 R)
• M4: 884,273 km (0.056 R)
• M5: 1,097,899 km (0.114 R)
• M6: 2,211,805 km (0.119 R)
• M7: 2,441,288 km (0.094 R)
• M8: 2,559,021 km (0.116 R)
• M9: 3,400,808 km (0.097 R)
• M10: 3,598,577 km (0.093 R)
• M11: 4,144,160 km (0.082 R)
• M12: 4,319,938 km (0.079 R)
• M13: 4,534,012 km (0.103 R)
• M14: 4,972,633 km (0.082 R)
• M15: 5,197,030 km (0.088 R)
• M16: 5,733,338 km (0.096 R)
• M17: 6,127,230 km (0.097 R)
• M18: 6,287,150 km (0.12 R)
• M19: 6,982,181 km (0.064 R)
• M20: 7,023,919 km (0.095 R)
• M21: 7,107,395 km (0.053 R)
• M22: 8,577,194 km (0.09 R)
• M23: 9,300,200 km (0.069 R)
• M24: 9,855,209 km (0.11 R)
• M25: 10,373,266 km (0.087 R)
• M26: 10,420,838 km (0.035 R)
• M27: 10,755,638 km (0.087 R)
• M28: 11,240,186 km (0.093 R)
• M29: 11,435,860 km (0.079 R)
• M30: 11,830,798 km (0.065 R)
• M31: 12,888,605 km (0.046 R)
• M32: 13,247,939 km (0.105 R)
• M33: 13,299,400 km (0.085 R)
• M34: 13,871,463 km (0.115 R)
• M35: 14,451,304 km (0.072 R)
• M36: 15,039,224 km (0.077 R)
• M37: 16,681,659 km (0.108 R)
• M38: 16,793,109 km (0.073 R)
• M39: 17,073,007 km (0.057 R)
• M40: 17,523,895 km (0.112 R)
• M41: 19,366,641 km (0.084 R)
• M42: 19,777,736 km (0.113 R)
• M43: 20,668,591 km (0.081 R)
• M44: 22,366,228 km (0.064 R)
• M45: 22,427,713 km (0.087 R)
• M46: 22,489,198 km (0.081 R)
• M47: 22,735,884 km (0.12 R)
• M48: 24,613,637 km (0.07 R)
• M49: 24,677,216 km (0.11 R)
• M50: 25,378,680 km (0.108 R)
• M51: 25,571,063 km (0.05 R)
• M52: 26,280,905 km (0.106 R)
• M53: 26,866,581 km (0.114 R)
• M54: 27,324,949 km (0.043 R)
• M55: 29,251,470 km (0.093 R)
• M56: 29,790,621 km (0.116 R)
• M57: 29,858,239 km (0.097 R)
• M58: 30,537,264 km (0.081 R)
• M59: 31,084,194 km (0.117 R)
• M60: 31,152,709 km (0.1 R)
• M61: 31,427,521 km (0.096 R)
• M62: 32,187,627 km (0.088 R)
• M63: 32,326,454 km (0.073 R)
• M64: 33,303,777 km (0.108 R)
• M65: 33,514,411 km (0.096 R)
• M66: 34,432,643 km (0.095 R)
• M67: 35,144,429 km (0.107 R)
• M68: 37,381,965 km (0.082 R)
• M69: 38,113,498 km (0.104 R)
• M70: 38,186,951 km (0.115 R)
• M71: 38,260,403 km (0.079 R)
• M72: 40,112,126 km (0.095 R)
• M73: 40,560,919 km (0.114 R)
• M74: 41,086,457 km (0.098 R)
• M75: 41,387,897 km (0.043 R)
• M76: 41,538,841 km (0.096 R)
• M77: 44,364,595 km (0.053 R)
• M78: 44,596,322 km (0.105 R)
• M79: 44,673,664 km (0.072 R)
• M80: 44,906,139 km (0.108 R)
• M81: 45,683,450 km (0.051 R)
• M82: 47,883,735 km (0.101 R)
• M83: 48,359,756 km (0.044 R)
• M84: 49,716,908 km (0.095 R)
• M85: 50,440,363 km (0.086 R)
• M86: 50,601,629 km (0.118 R)
• M87: 51,167,409 km (0.105 R)
• M88: 51,653,901 km (0.056 R)
• M89: 52,795,333 km (0.111 R)
• M90: 53,286,911 km (0.095 R)
• M91: 55,102,730 km (0.082 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 547.7

Radius: 6

Gravity: 15.21 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 13.57 AU - 19.61 AU

Year: 24931 Days

Day: 22.2 Hours

Environment

Temp: -198 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 81,799,134 km

• M1: 77,193 km (0.042 R)
• M2: 122,521 km (0.12 R)
• M3: 457,470 km (0.096 R)
• M4: 542,442 km (0.113 R)
• M5: 1,128,716 km (0.077 R)
• M6: 1,366,876 km (0.086 R)
• M7: 1,491,940 km (0.087 R)
• M8: 1,993,541 km (0.115 R)
• M9: 2,064,301 km (0.089 R)
• M10: 2,244,566 km (0.088 R)
• M11: 2,736,893 km (0.116 R)
• M12: 3,303,420 km (0.1 R)
• M13: 4,727,742 km (0.067 R)
• M14: 5,061,794 km (0.085 R)
• M15: 7,111,883 km (0.096 R)
• M16: 7,660,159 km (0.025 R)
• M17: 7,715,660 km (0.111 R)
• M18: 7,771,310 km (0.09 R)
• M19: 7,939,309 km (0.097 R)
• M20: 8,565,226 km (0.118 R)
• M21: 8,622,971 km (0.091 R)
• M22: 9,325,333 km (0.116 R)
• M23: 9,444,263 km (0.104 R)
• M24: 12,705,646 km (0.096 R)
• M25: 12,837,442 km (0.038 R)
• M26: 13,102,530 km (0.078 R)
• M27: 13,302,392 km (0.06 R)
• M28: 14,729,855 km (0.052 R)
• M29: 14,937,796 km (0.109 R)
• M30: 15,356,371 km (0.107 R)
• M31: 15,426,532 km (0.09 R)
• M32: 15,708,225 km (0.098 R)
• M33: 15,778,985 km (0.092 R)
• M34: 16,348,205 km (0.078 R)
• M35: 17,141,971 km (0.096 R)
• M36: 17,506,990 km (0.088 R)
• M37: 18,766,754 km (0.065 R)
• M38: 19,142,843 km (0.113 R)
• M39: 19,218,390 km (0.087 R)
• M40: 20,132,283 km (0.085 R)
• M41: 21,372,749 km (0.098 R)
• M42: 22,081,394 km (0.057 R)
• M43: 22,398,840 km (0.088 R)
• M44: 23,118,406 km (0.111 R)
• M45: 24,909,392 km (0.095 R)
• M46: 25,488,485 km (0.094 R)
• M47: 25,571,662 km (0.064 R)
• M48: 25,654,838 km (0.074 R)
• M49: 26,155,841 km (0.028 R)
• M50: 26,239,616 km (0.112 R)
• M51: 27,167,572 km (0.097 R)
• M52: 28,795,346 km (0.071 R)
• M53: 29,315,947 km (0.098 R)
• M54: 30,015,018 km (0.081 R)
• M55: 30,454,686 km (0.087 R)
• M56: 31,607,637 km (0.062 R)
• M57: 33,409,244 km (0.071 R)
• M58: 34,047,727 km (0.106 R)
• M59: 35,151,460 km (0.111 R)
• M60: 36,360,361 km (0.03 R)
• M61: 37,772,266 km (0.093 R)
• M62: 38,341,934 km (0.118 R)
• M63: 38,723,409 km (0.038 R)
• M64: 41,525,975 km (0.111 R)
• M65: 42,310,467 km (0.08 R)
• M66: 43,496,478 km (0.046 R)
• M67: 47,834,966 km (0.116 R)
• M68: 50,315,748 km (0.084 R)
• M69: 51,361,736 km (0.1 R)
• M70: 51,571,772 km (0.117 R)
• M71: 53,262,377 km (0.098 R)
• M72: 53,368,741 km (0.115 R)
• M73: 57,567,953 km (0.078 R)
• M74: 58,881,124 km (0.118 R)
• M75: 59,210,987 km (0.064 R)
• M76: 59,983,061 km (0.083 R)
• M77: 60,536,574 km (0.077 R)
• M78: 61,983,634 km (0.116 R)
• M79: 62,655,328 km (0.08 R)
• M80: 62,992,073 km (0.089 R)
• M81: 63,667,358 km (0.115 R)
• M82: 63,780,155 km (0.054 R)
• M83: 66,735,909 km (0.104 R)
• M84: 66,850,501 km (0.12 R)
• M85: 67,194,576 km (0.11 R)
• M86: 68,461,371 km (0.045 R)
• M87: 69,503,620 km (0.1 R)
• M88: 70,317,881 km (0.112 R)
• M89: 74,436,609 km (0.094 R)
• M90: 75,031,261 km (0.089 R)
• M91: 77,065,193 km (0.084 R)
• M92: 78,149,180 km (0.088 R)
• M93: 79,238,402 km (0.032 R)
• M94: 79,723,996 km (0.101 R)
• M95: 79,845,620 km (0.1 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 438 - 18,445 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit