🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.01

Radius: 1

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.48 AU - 0.54 AU

Year: 134 Days

Day: 23.8 Hours

Environment

Temp: 193 °C

Axial Tilt: 10.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.93

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.65 AU - 0.91 AU

Year: 254 Days

Day: 36.1 Hours

Environment

Temp: 141 °C

Axial Tilt: 35.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 64,379,485 km

• M1: 77,791 km (0.119 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.31 AU - 1.87 AU

Year: 740 Days

Day: 22 Hours

Environment

Temp: -47 °C

Axial Tilt: 34.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,379,485 km

• M1: 904,170 km (0.068 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2.78 AU - 3.46 AU

Year: 2033 Days

Day: 21 Hours

Environment

Temp: -104 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.1

Radius: 8.4

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.62 AU - 5.72 AU

Year: 4337 Days

Day: 8.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 64,379,485 km

• M1: 105,167 km (0.089 R)
• M2: 176,376 km (0.075 R)
• M3: 337,642 km (0.042 R)
• M4: 409,300 km (0.099 R)
• M5: 478,115 km (0.068 R)
• M6: 649,255 km (0.11 R)
• M7: 742,454 km (0.118 R)
• M8: 851,661 km (0.086 R)
• M9: 920,027 km (0.094 R)
• M10: 1,013,974 km (0.086 R)
• M11: 1,148,762 km (0.105 R)
• M12: 1,532,481 km (0.092 R)
• M13: 1,631,066 km (0.091 R)
• M14: 1,909,018 km (0.118 R)
• M15: 2,297,823 km (0.055 R)
• M16: 2,394,763 km (0.089 R)
• M17: 2,592,830 km (0.109 R)
• M18: 2,917,607 km (0.114 R)
• M19: 3,419,658 km (0.11 R)
• M20: 3,586,908 km (0.088 R)
• M21: 3,756,702 km (0.106 R)
• M22: 4,222,549 km (0.112 R)
• M23: 4,686,303 km (0.109 R)
• M24: 5,208,549 km (0.037 R)
• M25: 5,661,681 km (0.115 R)
• M26: 5,749,495 km (0.044 R)
• M27: 5,837,608 km (0.117 R)
• M28: 5,926,320 km (0.119 R)
• M29: 6,285,355 km (0.096 R)
• M30: 6,767,508 km (0.108 R)
• M31: 6,837,371 km (0.12 R)
• M32: 7,048,304 km (0.12 R)
• M33: 7,119,213 km (0.1 R)
• M34: 7,404,795 km (0.107 R)
• M35: 7,524,922 km (0.118 R)
• M36: 7,864,809 km (0.062 R)
• M37: 8,685,652 km (0.07 R)
• M38: 9,067,725 km (0.116 R)
• M39: 9,144,768 km (0.117 R)
• M40: 9,222,110 km (0.053 R)
• M41: 9,351,512 km (0.12 R)
• M42: 9,954,093 km (0.114 R)
• M43: 10,060,158 km (0.05 R)
• M44: 10,220,078 km (0.112 R)
• M45: 10,434,601 km (0.087 R)
• M46: 10,515,384 km (0.11 R)
• M47: 10,596,316 km (0.099 R)
• M48: 11,501,234 km (0.071 R)
• M49: 11,668,484 km (0.116 R)
• M50: 12,402,262 km (0.105 R)
• M51: 12,861,228 km (0.048 R)
• M52: 13,238,215 km (0.03 R)
• M53: 13,530,679 km (0.113 R)
• M54: 14,003,258 km (0.115 R)
• M55: 14,062,649 km (0.119 R)
• M56: 14,511,143 km (0.095 R)
• M57: 14,722,076 km (0.112 R)
• M58: 15,116,416 km (0.074 R)
• M59: 15,238,488 km (0.113 R)
• M60: 15,606,499 km (0.077 R)
• M61: 16,382,912 km (0.107 R)
• M62: 16,823,029 km (0.116 R)
• M63: 16,886,308 km (0.11 R)
• M64: 17,044,733 km (0.036 R)
• M65: 17,299,049 km (0.075 R)
• M66: 17,458,670 km (0.056 R)
• M67: 17,618,889 km (0.11 R)
• M68: 18,851,875 km (0.046 R)
• M69: 18,917,548 km (0.06 R)
• M70: 19,049,045 km (0.12 R)
• M71: 19,611,682 km (0.092 R)
• M72: 20,179,556 km (0.091 R)
• M73: 20,347,704 km (0.028 R)
• M74: 20,448,832 km (0.077 R)
• M75: 20,786,923 km (0.096 R)
• M76: 21,160,918 km (0.09 R)
• M77: 21,297,501 km (0.085 R)
• M78: 21,674,637 km (0.111 R)
• M79: 21,812,417 km (0.1 R)
• M80: 22,679,486 km (0.103 R)
• M81: 23,029,395 km (0.107 R)
• M82: 23,310,789 km (0.118 R)
• M83: 23,628,535 km (0.038 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.7

Radius: 11.8

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 5.91 AU - 6.79 AU

Year: 5904 Days

Day: 12.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 64,379,485 km

• M1: 154,535 km (0.102 R)
• M2: 239,805 km (0.118 R)
• M3: 391,198 km (0.106 R)
• M4: 629,957 km (0.094 R)
• M5: 749,485 km (0.074 R)
• M6: 838,197 km (0.053 R)
• M7: 971,937 km (0.101 R)
• M8: 1,231,340 km (0.051 R)
• M9: 1,323,044 km (0.109 R)
• M10: 1,417,141 km (0.037 R)
• M11: 1,546,244 km (0.053 R)
• M12: 1,645,876 km (0.047 R)
• M13: 1,799,363 km (0.117 R)
• M14: 1,993,691 km (0.072 R)
• M15: 2,403,290 km (0.117 R)
• M16: 2,617,963 km (0.091 R)
• M17: 3,739,947 km (0.113 R)
• M18: 4,221,652 km (0.111 R)
• M19: 4,458,166 km (0.115 R)
• M20: 4,650,399 km (0.054 R)
• M21: 4,845,475 km (0.102 R)
• M22: 5,370,564 km (0.077 R)
• M23: 5,678,735 km (0.116 R)
• M24: 5,756,825 km (0.066 R)
• M25: 5,913,753 km (0.112 R)
• M26: 6,019,370 km (0.076 R)
• M27: 6,747,762 km (0.116 R)
• M28: 7,504,128 km (0.094 R)
• M29: 7,589,848 km (0.101 R)
• M30: 7,936,017 km (0.102 R)
• M31: 8,140,368 km (0.107 R)
• M32: 8,733,823 km (0.054 R)
• M33: 9,188,152 km (0.077 R)
• M34: 9,557,210 km (0.112 R)
• M35: 9,743,459 km (0.071 R)
• M36: 10,405,130 km (0.091 R)
• M37: 10,661,092 km (0.09 R)
• M38: 10,886,835 km (0.101 R)
• M39: 11,048,850 km (0.049 R)
• M40: 11,211,912 km (0.088 R)
• M41: 12,005,229 km (0.053 R)
• M42: 12,273,757 km (0.113 R)
• M43: 12,612,148 km (0.114 R)
• M44: 12,919,272 km (0.059 R)
• M45: 13,680,725 km (0.084 R)
• M46: 13,926,066 km (0.07 R)
• M47: 14,102,142 km (0.097 R)
• M48: 14,849,982 km (0.105 R)
• M49: 15,319,420 km (0.102 R)
• M50: 15,757,144 km (0.11 R)
• M51: 15,940,700 km (0.054 R)
• M52: 16,644,708 km (0.112 R)
• M53: 17,132,397 km (0.085 R)
• M54: 17,586,576 km (0.082 R)
• M55: 17,853,459 km (0.118 R)
• M56: 18,314,071 km (0.091 R)
• M57: 18,391,113 km (0.11 R)
• M58: 18,662,035 km (0.084 R)
• M59: 20,394,678 km (0.106 R)
• M60: 20,474,713 km (0.061 R)
• M61: 20,675,024 km (0.074 R)
• M62: 21,037,500 km (0.071 R)
• M63: 21,280,297 km (0.104 R)
• M64: 21,483,301 km (0.041 R)
• M65: 21,605,373 km (0.117 R)
• M66: 22,260,612 km (0.046 R)
• M67: 22,425,319 km (0.095 R)
• M68: 22,963,872 km (0.089 R)
• M69: 23,130,374 km (0.082 R)
• M70: 23,632,424 km (0.103 R)
• M71: 23,716,498 km (0.105 R)
• M72: 24,265,074 km (0.051 R)
• M73: 24,434,718 km (0.098 R)
• M74: 25,074,398 km (0.085 R)
• M75: 25,203,052 km (0.111 R)
• M76: 25,979,316 km (0.118 R)
• M77: 28,221,040 km (0.109 R)
• M78: 28,533,550 km (0.096 R)
• M79: 28,802,377 km (0.11 R)
• M80: 29,162,011 km (0.105 R)
• M81: 29,568,468 km (0.106 R)
• M82: 29,749,631 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.5

Radius: 10.2

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 7.33 AU - 7.49 AU

Year: 7442 Days

Day: 9.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 64,379,485 km

• M1: 420,071 km (0.097 R)
• M2: 578,196 km (0.095 R)
• M3: 672,293 km (0.098 R)
• M4: 757,564 km (0.054 R)
• M5: 893,099 km (0.117 R)
• M6: 988,094 km (0.1 R)
• M7: 1,086,829 km (0.094 R)
• M8: 1,385,127 km (0.07 R)
• M9: 1,459,028 km (0.119 R)
• M10: 1,611,319 km (0.09 R)
• M11: 1,931,608 km (0.097 R)
• M12: 2,120,699 km (0.066 R)
• M13: 2,228,410 km (0.047 R)
• M14: 2,449,665 km (0.066 R)
• M15: 2,724,476 km (0.109 R)
• M16: 2,961,290 km (0.087 R)
• M17: 3,279,185 km (0.087 R)
• M18: 3,354,134 km (0.097 R)
• M19: 3,763,733 km (0.107 R)
• M20: 4,297,947 km (0.096 R)
• M21: 5,231,438 km (0.054 R)
• M22: 5,615,904 km (0.103 R)
• M23: 5,826,837 km (0.063 R)
• M24: 6,040,463 km (0.108 R)
• M25: 6,132,765 km (0.107 R)
• M26: 6,475,344 km (0.071 R)
• M27: 6,569,890 km (0.119 R)
• M28: 6,728,314 km (0.107 R)
• M29: 7,606,453 km (0.078 R)
• M30: 9,007,886 km (0.091 R)
• M31: 9,540,305 km (0.103 R)
• M32: 9,684,069 km (0.104 R)
• M33: 10,156,050 km (0.074 R)
• M34: 10,339,606 km (0.079 R)
• M35: 10,413,358 km (0.084 R)
• M36: 10,487,260 km (0.116 R)
• M37: 11,235,997 km (0.119 R)
• M38: 12,235,161 km (0.09 R)
• M39: 12,313,102 km (0.072 R)
• M40: 13,382,876 km (0.046 R)
• M41: 14,071,475 km (0.064 R)
• M42: 14,276,274 km (0.108 R)
• M43: 14,358,553 km (0.049 R)
• M44: 14,854,919 km (0.118 R)
• M45: 17,508,336 km (0.061 R)
• M46: 18,261,113 km (0.106 R)
• M47: 18,529,192 km (0.069 R)
• M48: 18,753,739 km (0.115 R)
• M49: 18,934,004 km (0.111 R)
• M50: 19,160,196 km (0.053 R)
• M51: 19,341,658 km (0.084 R)
• M52: 19,569,496 km (0.068 R)
• M53: 20,442,998 km (0.114 R)
• M54: 20,768,074 km (0.112 R)
• M55: 20,861,273 km (0.107 R)
• M56: 21,235,418 km (0.105 R)
• M57: 21,564,683 km (0.094 R)
• M58: 22,275,721 km (0.106 R)
• M59: 23,429,570 km (0.113 R)
• M60: 24,013,749 km (0.03 R)
• M61: 25,295,803 km (0.075 R)
• M62: 25,495,068 km (0.106 R)
• M63: 26,095,853 km (0.044 R)
• M64: 26,853,566 km (0.084 R)
• M65: 27,005,856 km (0.11 R)
• M66: 27,823,409 km (0.039 R)
• M67: 28,545,518 km (0.11 R)
• M68: 30,377,493 km (0.094 R)
• M69: 31,709,213 km (0.049 R)
• M70: 32,679,804 km (0.069 R)
• M71: 33,879,430 km (0.111 R)
• M72: 35,259,919 km (0.118 R)
• M73: 35,371,220 km (0.07 R)
• M74: 37,053,747 km (0.075 R)
• M75: 37,280,089 km (0.095 R)
• M76: 37,734,118 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 255.8

Radius: 13.7

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 7.84 AU - 10.86 AU

Year: 10549 Days

Day: 6.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 64,379,485 km

• M1: 346,169 km (0.118 R)
• M2: 604,675 km (0.034 R)
• M3: 746,793 km (0.043 R)
• M4: 858,093 km (0.077 R)
• M5: 1,595,012 km (0.084 R)
• M6: 1,995,336 km (0.067 R)
• M7: 2,238,433 km (0.065 R)
• M8: 2,470,010 km (0.115 R)
• M9: 2,599,712 km (0.093 R)
• M10: 2,888,884 km (0.1 R)
• M11: 3,402,304 km (0.087 R)
• M12: 3,596,183 km (0.088 R)
• M13: 4,097,037 km (0.111 R)
• M14: 4,673,587 km (0.111 R)
• M15: 4,808,375 km (0.064 R)
• M16: 5,136,892 km (0.063 R)
• M17: 5,558,010 km (0.108 R)
• M18: 6,344,446 km (0.103 R)
• M19: 6,433,905 km (0.116 R)
• M20: 7,041,721 km (0.109 R)
• M21: 7,415,417 km (0.051 R)
• M22: 7,668,088 km (0.099 R)
• M23: 7,763,681 km (0.073 R)
• M24: 7,859,573 km (0.09 R)
• M25: 7,955,914 km (0.119 R)
• M26: 8,214,718 km (0.107 R)
• M27: 8,312,406 km (0.115 R)
• M28: 8,907,207 km (0.111 R)
• M29: 9,550,029 km (0.101 R)
• M30: 9,998,673 km (0.118 R)
• M31: 10,383,588 km (0.12 R)
• M32: 11,024,017 km (0.057 R)
• M33: 11,531,004 km (0.083 R)
• M34: 11,750,614 km (0.115 R)
• M35: 12,082,721 km (0.09 R)
• M36: 13,480,414 km (0.04 R)
• M37: 14,178,737 km (0.117 R)
• M38: 15,208,269 km (0.049 R)
• M39: 15,328,695 km (0.089 R)
• M40: 15,530,054 km (0.112 R)
• M41: 16,139,217 km (0.08 R)
• M42: 17,464,953 km (0.092 R)
• M43: 19,084,350 km (0.105 R)
• M44: 19,999,739 km (0.099 R)
• M45: 20,175,816 km (0.112 R)
• M46: 20,529,316 km (0.095 R)
• M47: 20,706,888 km (0.089 R)
• M48: 21,242,598 km (0.091 R)
• M49: 21,557,203 km (0.025 R)
• M50: 22,236,527 km (0.1 R)
• M51: 22,739,325 km (0.095 R)
• M52: 23,570,042 km (0.105 R)
• M53: 23,709,467 km (0.049 R)
• M54: 24,223,037 km (0.116 R)
• M55: 25,642,272 km (0.036 R)
• M56: 27,772,396 km (0.089 R)
• M57: 28,116,471 km (0.063 R)
• M58: 28,412,525 km (0.059 R)
• M59: 28,560,926 km (0.117 R)
• M60: 29,657,329 km (0.108 R)
• M61: 29,858,089 km (0.119 R)
• M62: 30,818,209 km (0.079 R)
• M63: 31,021,512 km (0.117 R)
• M64: 31,123,388 km (0.045 R)
• M65: 31,276,427 km (0.06 R)
• M66: 32,716,755 km (0.064 R)
• M67: 32,976,158 km (0.089 R)
• M68: 33,340,578 km (0.101 R)
• M69: 34,336,451 km (0.079 R)
• M70: 34,758,766 km (0.1 R)
• M71: 35,448,562 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 12.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 703.8

Radius: 9

Gravity: 8.69 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 10.51 AU - 13.51 AU

Year: 15356 Days

Day: 5.7 Hours

Environment

Temp: -179 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 64,379,485 km

• M1: 254,316 km (0.036 R)
• M2: 336,146 km (0.048 R)
• M3: 685,009 km (0.116 R)
• M4: 830,418 km (0.108 R)
• M5: 1,379,442 km (0.118 R)
• M6: 1,847,085 km (0.065 R)
• M7: 2,144,186 km (0.098 R)
• M8: 2,488,710 km (0.119 R)
• M9: 2,783,418 km (0.098 R)
• M10: 2,884,247 km (0.111 R)
• M11: 3,159,058 km (0.05 R)
• M12: 3,771,063 km (0.083 R)
• M13: 4,071,755 km (0.081 R)
• M14: 5,392,554 km (0.111 R)
• M15: 5,774,179 km (0.09 R)
• M16: 6,252,593 km (0.107 R)
• M17: 7,386,694 km (0.081 R)
• M18: 7,810,355 km (0.045 R)
• M19: 7,953,371 km (0.081 R)
• M20: 8,436,273 km (0.09 R)
• M21: 8,681,314 km (0.113 R)
• M22: 9,532,077 km (0.042 R)
• M23: 10,252,540 km (0.092 R)
• M24: 10,461,678 km (0.072 R)
• M25: 10,937,250 km (0.07 R)
• M26: 11,582,316 km (0.087 R)
• M27: 11,800,130 km (0.074 R)
• M28: 11,909,636 km (0.058 R)
• M29: 12,406,151 km (0.106 R)
• M30: 13,191,839 km (0.104 R)
• M31: 14,400,590 km (0.117 R)
• M32: 15,225,922 km (0.093 R)
• M33: 16,006,075 km (0.08 R)
• M34: 16,676,273 km (0.111 R)
• M35: 17,045,780 km (0.08 R)
• M36: 19,512,349 km (0.077 R)
• M37: 19,576,976 km (0.054 R)
• M38: 20,162,651 km (0.102 R)
• M39: 20,556,094 km (0.078 R)
• M40: 21,484,349 km (0.091 R)
• M41: 21,551,219 km (0.047 R)
• M42: 21,819,149 km (0.102 R)
• M43: 22,697,737 km (0.107 R)
• M44: 23,933,266 km (0.088 R)
• M45: 24,141,356 km (0.106 R)
• M46: 24,629,045 km (0.088 R)
• M47: 25,261,096 km (0.078 R)
• M48: 26,183,218 km (0.077 R)
• M49: 27,260,921 km (0.11 R)
• M50: 27,623,396 km (0.113 R)
• M51: 28,720,398 km (0.081 R)
• M52: 29,608,261 km (0.088 R)
• M53: 31,259,223 km (0.104 R)
• M54: 31,562,608 km (0.1 R)
• M55: 32,095,774 km (0.053 R)
• M56: 32,708,976 km (0.12 R)
• M57: 33,094,041 km (0.079 R)
• M58: 33,946,749 km (0.109 R)
• M59: 34,728,098 km (0.093 R)
• M60: 34,885,027 km (0.057 R)
• M61: 35,990,555 km (0.075 R)
• M62: 36,388,186 km (0.108 R)
• M63: 36,947,383 km (0.111 R)
• M64: 37,589,756 km (0.119 R)
• M65: 37,751,023 km (0.077 R)
• M66: 38,074,004 km (0.032 R)
• M67: 38,316,951 km (0.113 R)
• M68: 39,130,465 km (0.104 R)
• M69: 40,774,396 km (0.107 R)
• M70: 43,366,628 km (0.119 R)
• M71: 44,469,613 km (0.099 R)
• M72: 46,789,576 km (0.117 R)
• M73: 47,571,674 km (0.105 R)
• M74: 47,658,740 km (0.066 R)
• M75: 49,943,548 km (0.056 R)
• M76: 51,188,651 km (0.077 R)
• M77: 51,367,271 km (0.12 R)
• M78: 53,256,094 km (0.09 R)
• M79: 55,167,506 km (0.107 R)
• M80: 55,993,585 km (0.114 R)
• M81: 56,362,045 km (0.08 R)
• M82: 58,870,053 km (0.094 R)
• M83: 59,057,350 km (0.119 R)
• M84: 59,150,998 km (0.075 R)
• M85: 60,940,488 km (0.088 R)
• M86: 61,699,248 km (0.081 R)
• M87: 63,898,038 km (0.072 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: 543 - 14,073 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit