🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.53 AU - 0.65 AU

Year: 297 Days

Day: 36.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 41.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,473,186 km

• M1: 368,609 km (0.028 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.9

Radius: 9.2

Gravity: 8.12 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.67 AU - 0.71 AU

Year: 376 Days

Day: 5.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 65,473,186 km

• M1: 114,592 km (0.044 R)
• M2: 176,974 km (0.055 R)
• M3: 336,296 km (0.104 R)
• M4: 423,661 km (0.084 R)
• M5: 506,838 km (0.116 R)
• M6: 632,500 km (0.105 R)
• M7: 703,409 km (0.098 R)
• M8: 765,343 km (0.113 R)
• M9: 861,983 km (0.081 R)
• M10: 929,003 km (0.027 R)
• M11: 997,818 km (0.074 R)
• M12: 1,055,114 km (0.091 R)
• M13: 1,140,833 km (0.116 R)
• M14: 1,252,733 km (0.042 R)
• M15: 1,310,178 km (0.079 R)
• M16: 1,368,521 km (0.083 R)
• M17: 1,432,699 km (0.116 R)
• M18: 1,523,355 km (0.034 R)
• M19: 1,700,030 km (0.043 R)
• M20: 2,067,891 km (0.059 R)
• M21: 2,130,722 km (0.054 R)
• M22: 2,240,677 km (0.07 R)
• M23: 2,424,383 km (0.111 R)
• M24: 2,600,609 km (0.052 R)
• M25: 2,681,093 km (0.106 R)
• M26: 2,793,890 km (0.065 R)
• M27: 3,024,121 km (0.11 R)
• M28: 3,102,361 km (0.089 R)
• M29: 3,200,946 km (0.117 R)
• M30: 3,273,949 km (0.113 R)
• M31: 3,448,979 km (0.094 R)
• M32: 3,599,325 km (0.053 R)
• M33: 3,765,977 km (0.087 R)
• M34: 3,857,231 km (0.066 R)
• M35: 3,927,991 km (0.108 R)
• M36: 4,006,381 km (0.088 R)
• M37: 4,135,633 km (0.079 R)
• M38: 4,259,051 km (0.114 R)
• M39: 4,354,345 km (0.119 R)
• M40: 4,413,287 km (0.096 R)
• M41: 4,487,338 km (0.055 R)
• M42: 4,576,797 km (0.1 R)
• M43: 4,681,815 km (0.088 R)
• M44: 5,102,634 km (0.091 R)
• M45: 5,180,425 km (0.07 R)
• M46: 5,290,080 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.7

Radius: 10

Gravity: 5.36 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.7 AU - 0.82 AU

Year: 435 Days

Day: 5.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 65,473,186 km

• M1: 132,245 km (0.091 R)
• M2: 221,106 km (0.094 R)
• M3: 303,235 km (0.082 R)
• M4: 365,767 km (0.054 R)
• M5: 468,989 km (0.069 R)
• M6: 548,875 km (0.103 R)
• M7: 701,315 km (0.068 R)
• M8: 775,216 km (0.082 R)
• M9: 876,943 km (0.117 R)
• M10: 961,765 km (0.086 R)
• M11: 1,126,472 km (0.086 R)
• M12: 1,276,668 km (0.084 R)
• M13: 1,393,803 km (0.114 R)
• M14: 1,618,200 km (0.045 R)
• M15: 1,876,406 km (0.114 R)
• M16: 1,993,541 km (0.08 R)
• M17: 2,061,608 km (0.099 R)
• M18: 2,159,595 km (0.032 R)
• M19: 2,229,607 km (0.072 R)
• M20: 2,360,056 km (0.097 R)
• M21: 2,486,915 km (0.062 R)
• M22: 2,641,001 km (0.082 R)
• M23: 2,703,682 km (0.077 R)
• M24: 2,804,810 km (0.081 R)
• M25: 2,874,972 km (0.114 R)
• M26: 2,939,449 km (0.103 R)
• M27: 3,004,374 km (0.093 R)
• M28: 3,168,782 km (0.109 R)
• M29: 3,235,353 km (0.117 R)
• M30: 3,309,254 km (0.042 R)
• M31: 3,431,326 km (0.118 R)
• M32: 3,506,574 km (0.099 R)
• M33: 3,693,871 km (0.075 R)
• M34: 3,941,605 km (0.086 R)
• M35: 4,107,509 km (0.031 R)
• M36: 4,209,534 km (0.053 R)
• M37: 4,505,888 km (0.037 R)
• M38: 4,611,205 km (0.049 R)
• M39: 4,801,344 km (0.077 R)
• M40: 4,870,458 km (0.115 R)
• M41: 5,009,584 km (0.09 R)
• M42: 5,165,914 km (0.1 R)
• M43: 5,331,668 km (0.111 R)
• M44: 5,395,397 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.8

Radius: 9.4

Gravity: 3.81 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.78 AU - 0.78 AU

Year: 452 Days

Day: 11 Hours

Environment

Temp: -153 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 65,473,186 km

• M1: 119,080 km (0.099 R)
• M2: 187,446 km (0.099 R)
• M3: 251,923 km (0.116 R)
• M4: 410,945 km (0.077 R)
• M5: 567,574 km (0.08 R)
• M6: 626,665 km (0.109 R)
• M7: 688,300 km (0.058 R)
• M8: 762,949 km (0.087 R)
• M9: 882,478 km (0.097 R)
• M10: 952,639 km (0.12 R)
• M11: 1,082,341 km (0.085 R)
• M12: 1,162,375 km (0.103 R)
• M13: 1,244,355 km (0.066 R)
• M14: 1,355,357 km (0.091 R)
• M15: 1,423,573 km (0.114 R)
• M16: 1,516,474 km (0.085 R)
• M17: 1,606,532 km (0.088 R)
• M18: 1,975,141 km (0.064 R)
• M19: 2,074,174 km (0.084 R)
• M20: 2,201,482 km (0.117 R)
• M21: 2,309,642 km (0.077 R)
• M22: 2,369,929 km (0.065 R)
• M23: 2,497,686 km (0.1 R)
• M24: 2,616,467 km (0.034 R)
• M25: 2,690,817 km (0.068 R)
• M26: 2,806,755 km (0.052 R)
• M27: 2,954,109 km (0.105 R)
• M28: 3,025,767 km (0.117 R)
• M29: 3,104,006 km (0.084 R)
• M30: 3,164,593 km (0.084 R)
• M31: 3,311,947 km (0.047 R)
• M32: 3,436,413 km (0.072 R)
• M33: 3,499,244 km (0.052 R)
• M34: 3,562,374 km (0.083 R)
• M35: 3,645,251 km (0.083 R)
• M36: 3,748,025 km (0.06 R)
• M37: 3,877,726 km (0.104 R)
• M38: 4,028,970 km (0.05 R)
• M39: 4,188,740 km (0.095 R)
• M40: 4,262,791 km (0.116 R)
• M41: 4,391,595 km (0.108 R)
• M42: 4,625,417 km (0.059 R)
• M43: 4,708,892 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.5

Radius: 11.3

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.93 AU - 2.77 AU

Year: 2363 Days

Day: 8.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 65,473,186 km

• M1: 143,016 km (0.088 R)
• M2: 224,397 km (0.104 R)
• M3: 307,872 km (0.086 R)
• M4: 413,189 km (0.062 R)
• M5: 570,865 km (0.098 R)
• M6: 692,339 km (0.11 R)
• M7: 860,786 km (0.095 R)
• M8: 990,039 km (0.092 R)
• M9: 1,126,173 km (0.053 R)
• M10: 1,425,518 km (0.103 R)
• M11: 1,604,587 km (0.093 R)
• M12: 1,733,690 km (0.075 R)
• M13: 1,994,140 km (0.071 R)
• M14: 2,115,912 km (0.094 R)
• M15: 2,240,228 km (0.087 R)
• M16: 2,394,613 km (0.095 R)
• M17: 2,647,134 km (0.065 R)
• M18: 2,801,071 km (0.11 R)
• M19: 2,938,102 km (0.088 R)
• M20: 3,229,220 km (0.04 R)
• M21: 3,425,193 km (0.072 R)
• M22: 3,721,097 km (0.103 R)
• M23: 3,904,953 km (0.1 R)
• M24: 4,080,581 km (0.037 R)
• M25: 4,693,184 km (0.094 R)
• M26: 4,939,273 km (0.112 R)
• M27: 5,153,497 km (0.098 R)
• M28: 5,261,806 km (0.067 R)
• M29: 5,702,820 km (0.109 R)
• M30: 6,412,363 km (0.098 R)
• M31: 6,581,110 km (0.084 R)
• M32: 7,016,140 km (0.06 R)
• M33: 7,243,828 km (0.045 R)
• M34: 7,433,219 km (0.056 R)
• M35: 7,555,889 km (0.101 R)
• M36: 7,803,175 km (0.108 R)
• M37: 7,983,590 km (0.118 R)
• M38: 8,179,264 km (0.099 R)
• M39: 8,404,857 km (0.079 R)
• M40: 8,561,187 km (0.096 R)
• M41: 8,718,564 km (0.114 R)
• M42: 8,833,605 km (0.118 R)
• M43: 8,977,967 km (0.114 R)
• M44: 9,065,033 km (0.119 R)
• M45: 9,167,058 km (0.098 R)
• M46: 9,284,044 km (0.113 R)
• M47: 9,401,478 km (0.114 R)
• M48: 9,786,693 km (0.049 R)
• M49: 9,951,250 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696.7

Radius: 14.4

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 2.02 AU - 3.08 AU

Year: 2671 Days

Day: 10.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 65,473,186 km

• M1: 184,155 km (0.081 R)
• M2: 292,464 km (0.038 R)
• M3: 394,041 km (0.09 R)
• M4: 515,065 km (0.077 R)
• M5: 768,484 km (0.108 R)
• M6: 1,140,235 km (0.116 R)
• M7: 1,667,119 km (0.036 R)
• M8: 2,018,225 km (0.101 R)
• M9: 2,223,772 km (0.116 R)
• M10: 2,897,412 km (0.101 R)
• M11: 3,146,342 km (0.081 R)
• M12: 3,273,501 km (0.066 R)
• M13: 3,402,454 km (0.043 R)
• M14: 3,549,658 km (0.05 R)
• M15: 3,765,977 km (0.092 R)
• M16: 3,952,525 km (0.048 R)
• M17: 4,142,066 km (0.114 R)
• M18: 4,566,475 km (0.051 R)
• M19: 5,060,896 km (0.059 R)
• M20: 5,191,944 km (0.086 R)
• M21: 5,727,354 km (0.064 R)
• M22: 5,962,373 km (0.101 R)
• M23: 6,100,900 km (0.118 R)
• M24: 6,240,475 km (0.055 R)
• M25: 6,748,061 km (0.082 R)
• M26: 7,058,925 km (0.064 R)
• M27: 7,247,867 km (0.072 R)
• M28: 8,020,091 km (0.12 R)
• M29: 8,173,429 km (0.079 R)
• M30: 8,393,937 km (0.112 R)
• M31: 8,571,958 km (0.106 R)
• M32: 8,728,737 km (0.094 R)
• M33: 8,954,181 km (0.114 R)
• M34: 9,181,719 km (0.107 R)
• M35: 9,388,164 km (0.074 R)
• M36: 9,689,155 km (0.115 R)
• M37: 9,782,354 km (0.035 R)
• M38: 10,181,930 km (0.101 R)
• M39: 10,707,168 km (0.104 R)
• M40: 11,610,291 km (0.12 R)
• M41: 11,883,456 km (0.107 R)
• M42: 12,690,537 km (0.086 R)
• M43: 12,895,037 km (0.114 R)
• M44: 13,049,273 km (0.073 R)
• M45: 13,255,718 km (0.064 R)
• M46: 13,515,270 km (0.081 R)
• M47: 13,671,899 km (0.111 R)
• M48: 14,330,878 km (0.116 R)
• M49: 14,490,499 km (0.112 R)
• M50: 14,865,540 km (0.051 R)
• M51: 15,054,183 km (0.09 R)
• M52: 15,352,332 km (0.099 R)
• M53: 15,515,842 km (0.088 R)
• M54: 15,652,425 km (0.116 R)
• M55: 15,844,359 km (0.073 R)
• M56: 16,258,446 km (0.081 R)
• M57: 16,452,923 km (0.118 R)
• M58: 16,760,048 km (0.071 R)
• M59: 17,097,241 km (0.046 R)
• M60: 17,266,736 km (0.093 R)
• M61: 17,550,523 km (0.11 R)
• M62: 17,978,822 km (0.072 R)
• M63: 18,555,521 km (0.101 R)
• M64: 18,846,190 km (0.104 R)
• M65: 19,021,220 km (0.087 R)
• M66: 19,431,866 km (0.072 R)
• M67: 19,638,311 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.1

Radius: 13.6

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 4.15 AU - 6.91 AU

Year: 8531 Days

Day: 8.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 65,473,186 km

• M1: 176,974 km (0.052 R)
• M2: 367,861 km (0.103 R)
• M3: 520,152 km (0.057 R)
• M4: 636,689 km (0.087 R)
• M5: 813,962 km (0.101 R)
• M6: 1,028,037 km (0.065 R)
• M7: 1,897,948 km (0.053 R)
• M8: 2,138,950 km (0.097 R)
• M9: 2,313,681 km (0.05 R)
• M10: 2,598,365 km (0.108 R)
• M11: 3,490,418 km (0.072 R)
• M12: 3,697,760 km (0.102 R)
• M13: 4,186,796 km (0.12 R)
• M14: 4,344,023 km (0.093 R)
• M15: 4,439,167 km (0.058 R)
• M16: 4,860,136 km (0.088 R)
• M17: 5,226,351 km (0.119 R)
• M18: 5,361,887 km (0.035 R)
• M19: 5,532,877 km (0.071 R)
• M20: 6,199,186 km (0.093 R)
• M21: 6,414,906 km (0.091 R)
• M22: 6,928,177 km (0.045 R)
• M23: 7,077,326 km (0.077 R)
• M24: 9,029,727 km (0.116 R)
• M25: 9,646,370 km (0.099 R)
• M26: 10,234,140 km (0.045 R)
• M27: 10,575,373 km (0.08 R)
• M28: 10,747,410 km (0.113 R)
• M29: 10,833,728 km (0.086 R)
• M30: 11,665,642 km (0.072 R)
• M31: 11,932,674 km (0.082 R)
• M32: 13,066,925 km (0.065 R)
• M33: 13,344,280 km (0.065 R)
• M34: 13,810,875 km (0.093 R)
• M35: 14,235,434 km (0.087 R)
• M36: 14,904,436 km (0.099 R)
• M37: 15,000,926 km (0.106 R)
• M38: 15,194,357 km (0.089 R)
• M39: 16,372,440 km (0.104 R)
• M40: 16,521,888 km (0.085 R)
• M41: 16,671,636 km (0.109 R)
• M42: 16,771,716 km (0.035 R)
• M43: 17,783,896 km (0.041 R)
• M44: 18,349,076 km (0.034 R)
• M45: 18,711,851 km (0.112 R)
• M46: 18,815,822 km (0.058 R)
• M47: 19,655,365 km (0.102 R)
• M48: 20,883,713 km (0.102 R)
• M49: 20,991,723 km (0.091 R)
• M50: 21,099,882 km (0.055 R)
• M51: 21,371,103 km (0.093 R)
• M52: 22,578,208 km (0.115 R)
• M53: 24,487,227 km (0.108 R)
• M54: 24,943,799 km (0.052 R)
• M55: 25,173,282 km (0.101 R)
• M56: 26,447,408 km (0.106 R)
• M57: 27,328,240 km (0.085 R)
• M58: 27,801,867 km (0.087 R)
• M59: 28,517,543 km (0.074 R)
• M60: 28,757,498 km (0.116 R)
• M61: 29,299,641 km (0.088 R)
• M62: 29,663,014 km (0.108 R)
• M63: 30,088,919 km (0.081 R)
• M64: 30,333,212 km (0.064 R)
• M65: 30,946,713 km (0.096 R)
• M66: 31,069,832 km (0.099 R)
• M67: 31,378,602 km (0.105 R)
• M68: 31,502,320 km (0.076 R)
• M69: 32,310,747 km (0.08 R)
• M70: 34,969,101 km (0.05 R)
• M71: 35,225,811 km (0.099 R)
• M72: 35,418,941 km (0.1 R)
• M73: 37,171,929 km (0.093 R)
• M74: 37,565,372 km (0.11 R)
• M75: 38,026,133 km (0.09 R)
• M76: 40,223,277 km (0.076 R)
• M77: 40,425,085 km (0.1 R)
• M78: 42,119,729 km (0.092 R)
• M79: 42,393,045 km (0.115 R)
• M80: 42,735,474 km (0.114 R)
• M81: 44,879,062 km (0.089 R)
• M82: 45,228,074 km (0.109 R)
• M83: 45,437,960 km (0.117 R)
• M84: 46,280,644 km (0.093 R)
• M85: 46,703,857 km (0.096 R)
• M86: 47,057,506 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 377.8

Radius: 5.2

Gravity: 13.97 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 9.54 AU - 10.94 AU

Year: 21496 Days

Day: 24.4 Hours

Environment

Temp: -237 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 65,473,186 km

• M1: 120,576 km (0.091 R)
• M2: 197,020 km (0.102 R)
• M3: 249,679 km (0.09 R)
• M4: 292,763 km (0.108 R)
• M5: 338,839 km (0.061 R)
• M6: 931,396 km (0.118 R)
• M7: 1,949,709 km (0.09 R)
• M8: 2,451,012 km (0.091 R)
• M9: 2,516,386 km (0.039 R)
• M10: 5,439,079 km (0.083 R)
• M11: 5,871,118 km (0.111 R)
• M12: 6,585,298 km (0.058 R)
• M13: 6,952,711 km (0.103 R)
• M14: 7,563,668 km (0.038 R)
• M15: 9,343,434 km (0.04 R)
• M16: 9,755,726 km (0.108 R)
• M17: 11,190,669 km (0.113 R)
• M18: 12,351,698 km (0.109 R)
• M19: 12,520,594 km (0.103 R)
• M20: 13,841,244 km (0.096 R)
• M21: 14,075,364 km (0.079 R)
• M22: 14,429,014 km (0.045 R)
• M23: 14,547,645 km (0.114 R)
• M24: 14,845,345 km (0.062 R)
• M25: 16,923,110 km (0.076 R)
• M26: 17,048,173 km (0.113 R)
• M27: 17,677,831 km (0.103 R)
• M28: 17,868,269 km (0.072 R)
• M29: 18,379,445 km (0.026 R)
• M30: 19,024,960 km (0.071 R)
• M31: 20,205,736 km (0.107 R)
• M32: 21,545,235 km (0.067 R)
• M33: 21,816,456 km (0.087 R)
• M34: 22,775,079 km (0.063 R)
• M35: 23,607,591 km (0.109 R)
• M36: 23,887,339 km (0.101 R)
• M37: 24,874,984 km (0.086 R)
• M38: 25,088,311 km (0.086 R)
• M39: 25,373,744 km (0.101 R)
• M40: 27,695,652 km (0.119 R)
• M41: 28,360,914 km (0.057 R)
• M42: 29,857,790 km (0.049 R)
• M43: 31,919,099 km (0.071 R)
• M44: 32,073,634 km (0.06 R)
• M45: 32,460,943 km (0.066 R)
• M46: 36,418,854 km (0.078 R)
• M47: 36,499,487 km (0.045 R)
• M48: 38,125,915 km (0.104 R)
• M49: 39,195,689 km (0.108 R)
• M50: 39,859,006 km (0.117 R)
• M51: 41,028,562 km (0.08 R)
• M52: 41,955,321 km (0.12 R)
• M53: 43,059,503 km (0.05 R)
• M54: 44,259,428 km (0.101 R)
• M55: 46,867,218 km (0.115 R)
• M56: 47,306,587 km (0.059 R)
• M57: 47,570,926 km (0.053 R)
• M58: 48,366,936 km (0.044 R)
• M59: 49,345,755 km (0.111 R)
• M60: 50,061,581 km (0.117 R)
• M61: 50,690,939 km (0.103 R)
• M62: 50,871,205 km (0.104 R)
• M63: 51,503,854 km (0.114 R)
• M64: 53,784,324 km (0.09 R)
• M65: 53,876,327 km (0.108 R)
• M66: 53,968,180 km (0.058 R)
• M67: 55,168,404 km (0.117 R)
• M68: 58,348,854 km (0.069 R)
• M69: 58,632,342 km (0.079 R)
• M70: 58,821,584 km (0.12 R)
• M71: 59,865,926 km (0.064 R)
• M72: 60,629,324 km (0.11 R)
• M73: 60,725,067 km (0.082 R)
• M74: 61,012,295 km (0.108 R)
• M75: 61,492,055 km (0.089 R)
• M76: 61,876,821 km (0.094 R)
• M77: 64,201,871 km (0.048 R)
• M78: 65,179,044 km (0.073 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 173 - 17,737 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit