🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.06

Radius: 1.02

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.62 AU - 0.74 AU

Year: 196 Days

Day: 17.2 Hours

Environment

Temp: 184 °C

Axial Tilt: 14.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 47,318,423 km

• M1: 46,974 km (0.086 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.68 AU - 1 AU

Year: 269 Days

Day: 20.6 Hours

Environment

Temp: 118 °C

Axial Tilt: 37.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 47,318,423 km

• M1: 119,379 km (0.072 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 2.74 AU - 3.94 AU

Year: 2135 Days

Day: 19 Hours

Environment

Temp: -94 °C

Axial Tilt: 34.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,318,423 km

• M1: 187,745 km (0.084 R)

Planet 4 - Terrestrial

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.7

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 3.73 AU - 4.55 AU

Year: 2947 Days

Day: 29 Hours

Environment

Temp: -119 °C

Axial Tilt: 23.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.82

Radius: 1.51

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 4.64 AU - 4.76 AU

Year: 3565 Days

Day: 33.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 2.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.3

Radius: 11.7

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 6.9 AU - 7 AU

Year: 6410 Days

Day: 9.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 47,318,423 km

• M1: 154,385 km (0.068 R)
• M2: 230,680 km (0.095 R)
• M3: 366,664 km (0.06 R)
• M4: 576,101 km (0.083 R)
• M5: 743,801 km (0.098 R)
• M6: 989,291 km (0.037 R)
• M7: 1,162,375 km (0.112 R)
• M8: 1,261,260 km (0.088 R)
• M9: 1,432,848 km (0.111 R)
• M10: 1,521,560 km (0.1 R)
• M11: 2,113,968 km (0.049 R)
• M12: 2,361,552 km (0.093 R)
• M13: 2,596,869 km (0.071 R)
• M14: 2,862,555 km (0.079 R)
• M15: 2,975,950 km (0.045 R)
• M16: 3,277,839 km (0.116 R)
• M17: 3,492,661 km (0.098 R)
• M18: 3,761,788 km (0.113 R)
• M19: 4,242,446 km (0.059 R)
• M20: 4,477,015 km (0.081 R)
• M21: 4,609,110 km (0.091 R)
• M22: 4,796,407 km (0.079 R)
• M23: 4,931,793 km (0.088 R)
• M24: 5,013,623 km (0.099 R)
• M25: 5,150,954 km (0.064 R)
• M26: 5,345,431 km (0.082 R)
• M27: 5,741,716 km (0.072 R)
• M28: 5,885,479 km (0.115 R)
• M29: 6,773,792 km (0.098 R)
• M30: 7,171,722 km (0.086 R)
• M31: 7,264,622 km (0.085 R)
• M32: 7,357,971 km (0.08 R)
• M33: 7,640,412 km (0.118 R)
• M34: 8,378,229 km (0.055 R)
• M35: 8,508,977 km (0.095 R)
• M36: 8,607,413 km (0.085 R)
• M37: 8,905,112 km (0.065 R)
• M38: 10,443,876 km (0.082 R)
• M39: 10,974,949 km (0.071 R)
• M40: 11,879,567 km (0.049 R)
• M41: 12,137,174 km (0.095 R)
• M42: 12,285,276 km (0.084 R)
• M43: 12,883,518 km (0.026 R)
• M44: 13,262,150 km (0.032 R)
• M45: 13,338,445 km (0.057 R)
• M46: 13,414,740 km (0.106 R)
• M47: 13,606,226 km (0.113 R)
• M48: 13,914,397 km (0.114 R)
• M49: 14,030,635 km (0.119 R)
• M50: 14,224,962 km (0.089 R)
• M51: 14,498,577 km (0.117 R)
• M52: 14,577,116 km (0.1 R)
• M53: 15,170,421 km (0.103 R)
• M54: 15,250,157 km (0.119 R)
• M55: 15,852,438 km (0.094 R)
• M56: 16,380,668 km (0.084 R)
• M57: 17,080,337 km (0.118 R)
• M58: 17,204,802 km (0.095 R)
• M59: 17,538,106 km (0.074 R)
• M60: 18,253,783 km (0.078 R)
• M61: 18,466,062 km (0.081 R)
• M62: 18,721,874 km (0.117 R)
• M63: 18,893,014 km (0.106 R)
• M64: 18,978,883 km (0.111 R)
• M65: 20,062,271 km (0.108 R)
• M66: 21,165,705 km (0.053 R)
• M67: 21,972,486 km (0.104 R)
• M68: 24,405,696 km (0.104 R)
• M69: 25,868,165 km (0.109 R)
• M70: 26,778,468 km (0.118 R)
• M71: 27,894,468 km (0.038 R)
• M72: 29,223,944 km (0.049 R)
• M73: 29,671,690 km (0.05 R)
• M74: 30,473,385 km (0.116 R)
• M75: 31,638,005 km (0.075 R)
• M76: 32,149,031 km (0.104 R)
• M77: 32,456,904 km (0.102 R)
• M78: 32,765,823 km (0.106 R)
• M79: 33,075,640 km (0.114 R)
• M80: 33,334,594 km (0.108 R)
• M81: 34,324,783 km (0.111 R)
• M82: 34,586,878 km (0.079 R)
• M83: 34,902,380 km (0.111 R)
• M84: 35,007,847 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.9

Radius: 14.8

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 6.68 AU - 8.92 AU

Year: 7621 Days

Day: 6.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 47,318,423 km

• M1: 186,100 km (0.092 R)
• M2: 634,445 km (0.051 R)
• M3: 813,513 km (0.107 R)
• M4: 1,327,532 km (0.115 R)
• M5: 1,675,945 km (0.047 R)
• M6: 1,934,749 km (0.109 R)
• M7: 2,206,868 km (0.103 R)
• M8: 2,890,680 km (0.114 R)
• M9: 3,292,350 km (0.046 R)
• M10: 3,472,765 km (0.114 R)
• M11: 4,623,322 km (0.097 R)
• M12: 5,494,431 km (0.049 R)
• M13: 5,971,199 km (0.066 R)
• M14: 6,303,905 km (0.115 R)
• M15: 6,551,938 km (0.12 R)
• M16: 6,872,077 km (0.101 R)
• M17: 7,815,591 km (0.066 R)
• M18: 7,912,082 km (0.046 R)
• M19: 9,026,287 km (0.062 R)
• M20: 9,153,146 km (0.094 R)
• M21: 9,485,851 km (0.096 R)
• M22: 9,640,685 km (0.09 R)
• M23: 10,136,752 km (0.115 R)
• M24: 10,748,457 km (0.073 R)
• M25: 11,181,094 km (0.116 R)
• M26: 11,481,936 km (0.089 R)
• M27: 11,813,145 km (0.052 R)
• M28: 12,203,446 km (0.095 R)
• M29: 12,343,919 km (0.029 R)
• M30: 12,740,203 km (0.078 R)
• M31: 12,911,194 km (0.104 R)
• M32: 13,865,927 km (0.119 R)
• M33: 14,159,738 km (0.092 R)
• M34: 14,485,263 km (0.118 R)
• M35: 15,446,579 km (0.115 R)
• M36: 15,720,642 km (0.111 R)
• M37: 16,150,137 km (0.097 R)
• M38: 16,273,556 km (0.026 R)
• M39: 17,272,570 km (0.087 R)
• M40: 17,811,272 km (0.075 R)
• M41: 18,355,659 km (0.062 R)
• M42: 21,632,899 km (0.108 R)
• M43: 22,282,304 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.3

Radius: 13.5

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 7.35 AU - 8.25 AU

Year: 7621 Days

Day: 6.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 47,318,423 km

• M1: 174,431 km (0.106 R)
• M2: 463,155 km (0.095 R)
• M3: 548,426 km (0.033 R)
• M4: 640,728 km (0.113 R)
• M5: 768,484 km (0.109 R)
• M6: 1,003,203 km (0.03 R)
• M7: 1,298,659 km (0.105 R)
• M8: 1,447,659 km (0.05 R)
• M9: 2,278,824 km (0.116 R)
• M10: 2,369,181 km (0.079 R)
• M11: 2,530,598 km (0.056 R)
• M12: 3,162,050 km (0.092 R)
• M13: 3,289,059 km (0.109 R)
• M14: 3,417,863 km (0.112 R)
• M15: 3,787,519 km (0.107 R)
• M16: 4,225,990 km (0.092 R)
• M17: 5,151,552 km (0.1 R)
• M18: 5,301,749 km (0.084 R)
• M19: 5,392,704 km (0.058 R)
• M20: 5,484,108 km (0.111 R)
• M21: 5,699,380 km (0.1 R)
• M22: 6,043,455 km (0.092 R)
• M23: 6,949,719 km (0.114 R)
• M24: 7,049,351 km (0.098 R)
• M25: 7,725,982 km (0.064 R)
• M26: 8,037,295 km (0.116 R)
• M27: 8,317,492 km (0.099 R)
• M28: 9,141,028 km (0.118 R)
• M29: 9,286,886 km (0.088 R)
• M30: 9,915,646 km (0.102 R)
• M31: 10,178,639 km (0.102 R)
• M32: 11,214,305 km (0.109 R)
• M33: 11,370,635 km (0.093 R)
• M34: 11,685,538 km (0.086 R)
• M35: 12,163,204 km (0.103 R)
• M36: 12,485,139 km (0.089 R)
• M37: 12,687,844 km (0.042 R)
• M38: 12,932,586 km (0.099 R)
• M39: 13,178,824 km (0.071 R)
• M40: 13,592,612 km (0.105 R)
• M41: 14,095,111 km (0.104 R)
• M42: 14,221,522 km (0.066 R)
• M43: 14,348,530 km (0.081 R)
• M44: 14,475,838 km (0.117 R)
• M45: 14,603,445 km (0.112 R)
• M46: 15,074,977 km (0.101 R)
• M47: 15,290,847 km (0.094 R)
• M48: 16,430,185 km (0.094 R)
• M49: 17,460,914 km (0.068 R)
• M50: 17,733,332 km (0.081 R)
• M51: 17,869,914 km (0.112 R)
• M52: 18,052,723 km (0.112 R)
• M53: 18,328,133 km (0.092 R)
• M54: 19,443,684 km (0.102 R)
• M55: 19,867,644 km (0.051 R)
• M56: 20,009,613 km (0.037 R)
• M57: 20,294,597 km (0.114 R)
• M58: 20,628,948 km (0.115 R)
• M59: 21,496,765 km (0.039 R)
• M60: 22,179,979 km (0.066 R)
• M61: 22,623,088 km (0.054 R)
• M62: 22,771,339 km (0.085 R)
• M63: 25,960,317 km (0.073 R)
• M64: 26,063,839 km (0.106 R)
• M65: 26,167,510 km (0.08 R)
• M66: 26,949,308 km (0.116 R)
• M67: 27,054,027 km (0.065 R)
• M68: 27,211,553 km (0.099 R)
• M69: 29,125,060 km (0.068 R)
• M70: 29,232,621 km (0.118 R)
• M71: 29,664,360 km (0.065 R)
• M72: 30,533,973 km (0.117 R)
• M73: 31,026,898 km (0.082 R)
• M74: 33,192,925 km (0.086 R)
• M75: 33,305,273 km (0.102 R)
• M76: 34,095,599 km (0.085 R)
• M77: 34,322,539 km (0.037 R)
• M78: 35,407,273 km (0.092 R)
• M79: 35,752,246 km (0.079 R)
• M80: 36,793,746 km (0.093 R)
• M81: 36,968,327 km (0.072 R)
• M82: 37,669,193 km (0.062 R)
• M83: 37,786,477 km (0.063 R)
• M84: 38,610,612 km (0.096 R)
• M85: 39,143,629 km (0.051 R)
• M86: 39,321,800 km (0.102 R)
• M87: 39,679,040 km (0.109 R)

Planet 9 - Gas Giant

Semi-Major Axis: 12.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.9

Radius: 8.6

Gravity: 11.25 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 11.14 AU - 12.92 AU

Year: 14597 Days

Day: 8.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 47,318,423 km

• M1: 153,936 km (0.116 R)
• M2: 227,688 km (0.103 R)
• M3: 398,379 km (0.11 R)
• M4: 1,195,736 km (0.063 R)
• M5: 1,323,792 km (0.114 R)
• M6: 1,483,562 km (0.063 R)
• M7: 2,438,894 km (0.081 R)
• M8: 2,838,021 km (0.03 R)
• M9: 2,906,687 km (0.085 R)
• M10: 3,010,508 km (0.059 R)
• M11: 3,257,793 km (0.086 R)
• M12: 3,329,749 km (0.1 R)
• M13: 3,511,810 km (0.069 R)
• M14: 3,772,110 km (0.118 R)
• M15: 4,116,185 km (0.102 R)
• M16: 4,233,171 km (0.113 R)
• M17: 4,916,833 km (0.092 R)
• M18: 5,040,999 km (0.086 R)
• M19: 6,520,223 km (0.109 R)
• M20: 6,748,360 km (0.116 R)
• M21: 7,119,063 km (0.077 R)
• M22: 7,259,685 km (0.108 R)
• M23: 8,172,232 km (0.034 R)
• M24: 8,368,954 km (0.101 R)
• M25: 8,567,171 km (0.092 R)
• M26: 8,817,149 km (0.056 R)
• M27: 8,968,392 km (0.068 R)
• M28: 9,222,260 km (0.069 R)
• M29: 9,581,744 km (0.086 R)
• M30: 10,155,900 km (0.115 R)
• M31: 10,956,698 km (0.115 R)
• M32: 11,173,764 km (0.064 R)
• M33: 11,228,218 km (0.111 R)
• M34: 11,667,138 km (0.12 R)
• M35: 13,769,437 km (0.094 R)
• M36: 15,618,915 km (0.097 R)
• M37: 17,481,558 km (0.118 R)
• M38: 19,940,050 km (0.111 R)
• M39: 20,138,716 km (0.12 R)
• M40: 20,271,409 km (0.053 R)
• M41: 20,604,713 km (0.089 R)
• M42: 21,276,856 km (0.103 R)
• M43: 22,092,763 km (0.117 R)
• M44: 22,366,976 km (0.096 R)
• M45: 22,988,106 km (0.117 R)
• M46: 23,266,059 km (0.084 R)
• M47: 24,176,961 km (0.084 R)
• M48: 24,672,279 km (0.084 R)
• M49: 24,814,397 km (0.04 R)
• M50: 25,600,983 km (0.11 R)
• M51: 27,345,444 km (0.112 R)
• M52: 27,492,498 km (0.064 R)
• M53: 28,083,559 km (0.065 R)
• M54: 29,503,991 km (0.095 R)
• M55: 29,881,726 km (0.057 R)
• M56: 30,185,110 km (0.109 R)
• M57: 31,177,842 km (0.12 R)
• M58: 31,254,735 km (0.102 R)
• M59: 31,331,479 km (0.104 R)
• M60: 32,570,149 km (0.086 R)
• M61: 32,804,120 km (0.075 R)
• M62: 33,117,079 km (0.054 R)
• M63: 33,745,839 km (0.108 R)
• M64: 35,575,271 km (0.116 R)
• M65: 36,542,571 km (0.087 R)
• M66: 37,029,512 km (0.101 R)
• M67: 39,081,247 km (0.088 R)
• M68: 39,912,263 km (0.055 R)
• M69: 40,917,112 km (0.12 R)
• M70: 41,930,338 km (0.116 R)
• M71: 42,440,018 km (0.113 R)
• M72: 43,037,213 km (0.077 R)
• M73: 43,723,119 km (0.089 R)
• M74: 43,895,157 km (0.119 R)
• M75: 44,067,494 km (0.114 R)
• M76: 46,590,761 km (0.092 R)
• M77: 46,766,538 km (0.074 R)
• M78: 47,030,579 km (0.105 R)
• M79: 50,597,889 km (0.083 R)
• M80: 51,594,211 km (0.119 R)
• M81: 52,871,478 km (0.12 R)
• M82: 53,054,735 km (0.046 R)
• M83: 55,736,427 km (0.092 R)
• M84: 57,140,851 km (0.109 R)
• M85: 59,697,928 km (0.097 R)
• M86: 62,195,315 km (0.1 R)
• M87: 64,041,801 km (0.116 R)
• M88: 64,432,850 km (0.103 R)
• M89: 64,628,674 km (0.067 R)
• M90: 64,922,783 km (0.08 R)

Planet 10 - Gas Giant

Semi-Major Axis: 12.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306.2

Radius: 15

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 9.57 AU - 14.57 AU

Year: 14670 Days

Day: 7.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 47,318,423 km

• M1: 300,393 km (0.071 R)
• M2: 419,323 km (0.115 R)
• M3: 666,758 km (0.115 R)
• M4: 1,040,752 km (0.119 R)
• M5: 1,416,991 km (0.11 R)
• M6: 1,676,992 km (0.08 R)
• M7: 1,790,088 km (0.102 R)
• M8: 1,929,513 km (0.063 R)
• M9: 2,048,593 km (0.071 R)
• M10: 2,870,035 km (0.065 R)
• M11: 3,374,180 km (0.107 R)
• M12: 3,755,954 km (0.101 R)
• M13: 3,906,599 km (0.112 R)
• M14: 4,151,790 km (0.098 R)
• M15: 4,402,217 km (0.082 R)
• M16: 4,497,361 km (0.111 R)
• M17: 4,722,206 km (0.064 R)
• M18: 5,385,374 km (0.085 R)
• M19: 5,762,809 km (0.096 R)
• M20: 6,042,707 km (0.101 R)
• M21: 6,219,980 km (0.103 R)
• M22: 7,207,177 km (0.074 R)
• M23: 7,471,067 km (0.11 R)
• M24: 8,008,722 km (0.11 R)
• M25: 8,360,875 km (0.027 R)
• M26: 8,838,541 km (0.111 R)
• M27: 9,407,163 km (0.084 R)
• M28: 9,530,581 km (0.116 R)
• M29: 10,366,983 km (0.115 R)
• M30: 10,579,861 km (0.067 R)
• M31: 10,794,085 km (0.112 R)
• M32: 11,976,207 km (0.106 R)
• M33: 12,923,910 km (0.114 R)
• M34: 13,337,548 km (0.117 R)
• M35: 14,843,101 km (0.09 R)
• M36: 15,324,806 km (0.083 R)
• M37: 15,470,215 km (0.055 R)
• M38: 17,201,362 km (0.09 R)
• M39: 17,403,019 km (0.047 R)
• M40: 17,859,891 km (0.082 R)
• M41: 17,961,917 km (0.118 R)
• M42: 18,837,364 km (0.118 R)
• M43: 19,149,724 km (0.09 R)
• M44: 19,411,221 km (0.111 R)
• M45: 19,779,382 km (0.076 R)
• M46: 20,683,252 km (0.043 R)
• M47: 21,059,191 km (0.117 R)
• M48: 21,654,890 km (0.11 R)
• M49: 21,927,308 km (0.12 R)
• M50: 23,251,548 km (0.084 R)
• M51: 23,530,548 km (0.088 R)
• M52: 23,979,491 km (0.078 R)
• M53: 24,999,899 km (0.095 R)
• M54: 26,208,350 km (0.082 R)
• M55: 26,848,928 km (0.115 R)
• M56: 28,205,033 km (0.071 R)
• M57: 30,128,562 km (0.062 R)
• M58: 31,229,154 km (0.096 R)
• M59: 32,467,525 km (0.096 R)
• M60: 32,967,332 km (0.052 R)
• M61: 33,155,376 km (0.085 R)
• M62: 33,595,643 km (0.044 R)
• M63: 33,848,164 km (0.079 R)
• M64: 34,928,111 km (0.106 R)
• M65: 36,277,932 km (0.042 R)
• M66: 36,407,335 km (0.045 R)
• M67: 36,731,513 km (0.118 R)
• M68: 37,644,659 km (0.1 R)
• M69: 38,038,251 km (0.045 R)
• M70: 38,697,229 km (0.116 R)
• M71: 38,895,746 km (0.11 R)
• M72: 40,629,884 km (0.11 R)
• M73: 41,168,436 km (0.102 R)
• M74: 42,184,804 km (0.11 R)
• M75: 43,484,062 km (0.091 R)
• M76: 43,896,952 km (0.051 R)
• M77: 44,449,716 km (0.112 R)
• M78: 44,935,311 km (0.119 R)
• M79: 45,074,287 km (0.109 R)
• M80: 45,283,126 km (0.051 R)

Kuiper Belt

Range: 31.4 - 59.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 247 - 18,776 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit