🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.65 AU - 0.79 AU

Year: 221 Days

Day: 32.8 Hours

Environment

Temp: 160 °C

Axial Tilt: 23.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.27

Radius: 0.59

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.45 AU - 2.37 AU

Year: 955 Days

Day: 17.3 Hours

Environment

Temp: -68 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,423,285 km

• M1: 18,401 km (0.067 R)

Planet 3 - Terrestrial

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.09 AU - 4.97 AU

Year: 2926 Days

Day: 17.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 3.47 AU - 4.95 AU

Year: 3124 Days

Day: 30.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 23.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.6

Radius: 8.4

Gravity: 12.42 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 6.73 AU - 11.11 AU

Year: 9635 Days

Day: 14.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 112.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 55,423,285 km

• M1: 128,056 km (0.073 R)
• M2: 197,469 km (0.09 R)
• M3: 381,026 km (0.093 R)
• M4: 722,558 km (0.077 R)
• M5: 793,916 km (0.086 R)
• M6: 1,359,845 km (0.102 R)
• M7: 1,634,955 km (0.069 R)
• M8: 1,977,983 km (0.109 R)
• M9: 2,236,787 km (0.05 R)
• M10: 2,397,306 km (0.101 R)
• M11: 2,451,610 km (0.045 R)
• M12: 2,645,339 km (0.103 R)
• M13: 3,655,424 km (0.112 R)
• M14: 3,781,385 km (0.079 R)
• M15: 3,908,992 km (0.056 R)
• M16: 4,333,252 km (0.083 R)
• M17: 5,049,527 km (0.105 R)
• M18: 5,154,843 km (0.104 R)
• M19: 5,403,475 km (0.067 R)
• M20: 5,475,282 km (0.043 R)
• M21: 6,437,047 km (0.09 R)
• M22: 6,589,637 km (0.114 R)
• M23: 7,015,392 km (0.112 R)
• M24: 7,490,066 km (0.076 R)
• M25: 8,428,793 km (0.057 R)
• M26: 8,637,781 km (0.027 R)
• M27: 9,231,984 km (0.083 R)
• M28: 9,620,938 km (0.088 R)
• M29: 9,795,669 km (0.117 R)
• M30: 10,504,463 km (0.113 R)
• M31: 10,594,372 km (0.108 R)
• M32: 11,092,682 km (0.119 R)
• M33: 11,367,793 km (0.083 R)
• M34: 11,691,522 km (0.078 R)
• M35: 11,924,745 km (0.098 R)
• M36: 12,206,438 km (0.099 R)
• M37: 12,776,705 km (0.039 R)
• M38: 12,920,618 km (0.086 R)
• M39: 13,161,621 km (0.11 R)
• M40: 13,355,649 km (0.096 R)
• M41: 13,501,657 km (0.099 R)
• M42: 13,599,344 km (0.097 R)
• M43: 13,844,535 km (0.051 R)
• M44: 14,140,739 km (0.042 R)
• M45: 14,890,374 km (0.11 R)
• M46: 15,346,348 km (0.089 R)
• M47: 15,755,498 km (0.117 R)
• M48: 17,268,531 km (0.027 R)
• M49: 17,480,960 km (0.094 R)
• M50: 19,100,955 km (0.114 R)
• M51: 19,651,475 km (0.084 R)
• M52: 20,824,772 km (0.093 R)
• M53: 20,994,116 km (0.1 R)
• M54: 21,448,296 km (0.115 R)
• M55: 22,020,507 km (0.119 R)
• M56: 23,355,519 km (0.107 R)
• M57: 23,414,161 km (0.081 R)
• M58: 24,955,917 km (0.09 R)
• M59: 25,196,171 km (0.054 R)
• M60: 25,256,309 km (0.07 R)
• M61: 25,618,187 km (0.107 R)
• M62: 25,860,386 km (0.029 R)
• M63: 27,082,750 km (0.086 R)
• M64: 27,453,304 km (0.07 R)
• M65: 27,825,354 km (0.103 R)
• M66: 30,604,583 km (0.091 R)
• M67: 32,549,654 km (0.119 R)
• M68: 32,680,702 km (0.109 R)
• M69: 32,877,722 km (0.084 R)
• M70: 33,802,088 km (0.096 R)
• M71: 34,001,352 km (0.115 R)
• M72: 34,200,916 km (0.057 R)
• M73: 34,869,020 km (0.1 R)
• M74: 35,070,378 km (0.113 R)
• M75: 36,967,429 km (0.036 R)
• M76: 40,719,194 km (0.103 R)
• M77: 41,853,894 km (0.11 R)
• M78: 42,067,819 km (0.102 R)
• M79: 42,999,066 km (0.117 R)
• M80: 44,372,075 km (0.082 R)
• M81: 46,717,171 km (0.102 R)
• M82: 46,939,025 km (0.092 R)
• M83: 47,755,679 km (0.073 R)
• M84: 47,830,179 km (0.026 R)
• M85: 49,629,094 km (0.069 R)
• M86: 50,385,311 km (0.069 R)
• M87: 50,764,691 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 479.4

Radius: 9.7

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 9.02 AU - 9.5 AU

Year: 10191 Days

Day: 11.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 55,423,285 km

• M1: 184,305 km (0.117 R)
• M2: 451,636 km (0.119 R)
• M3: 572,511 km (0.117 R)
• M4: 645,066 km (0.082 R)
• M5: 736,470 km (0.091 R)
• M6: 832,811 km (0.119 R)
• M7: 916,586 km (0.114 R)
• M8: 1,021,005 km (0.079 R)
• M9: 1,339,499 km (0.113 R)
• M10: 1,439,132 km (0.099 R)
• M11: 1,667,119 km (0.073 R)
• M12: 1,731,446 km (0.11 R)
• M13: 2,371,874 km (0.053 R)
• M14: 2,819,621 km (0.075 R)
• M15: 3,000,933 km (0.117 R)
• M16: 3,457,356 km (0.113 R)
• M17: 3,568,059 km (0.113 R)
• M18: 3,849,752 km (0.075 R)
• M19: 3,964,493 km (0.101 R)
• M20: 4,404,909 km (0.103 R)
• M21: 4,646,211 km (0.113 R)
• M22: 5,079,147 km (0.088 R)
• M23: 5,460,322 km (0.058 R)
• M24: 5,719,725 km (0.051 R)
• M25: 6,016,527 km (0.11 R)
• M26: 6,149,968 km (0.108 R)
• M27: 6,936,554 km (0.067 R)
• M28: 8,905,112 km (0.077 R)
• M29: 9,019,256 km (0.109 R)
• M30: 10,029,041 km (0.078 R)
• M31: 10,789,447 km (0.073 R)
• M32: 11,568,403 km (0.088 R)
• M33: 12,196,266 km (0.072 R)
• M34: 12,280,788 km (0.094 R)
• M35: 13,703,763 km (0.033 R)
• M36: 13,923,971 km (0.054 R)
• M37: 14,323,099 km (0.088 R)
• M38: 14,681,236 km (0.089 R)
• M39: 15,911,230 km (0.028 R)
• M40: 16,375,133 km (0.108 R)
• M41: 16,702,602 km (0.11 R)
• M42: 16,985,043 km (0.066 R)
• M43: 17,889,661 km (0.067 R)
• M44: 19,152,716 km (0.054 R)
• M45: 19,596,723 km (0.055 R)
• M46: 20,193,917 km (0.106 R)
• M47: 20,847,660 km (0.036 R)
• M48: 21,253,369 km (0.073 R)
• M49: 21,457,122 km (0.116 R)
• M50: 22,279,012 km (0.089 R)
• M51: 23,320,962 km (0.094 R)
• M52: 23,478,488 km (0.105 R)
• M53: 23,900,653 km (0.106 R)
• M54: 24,112,634 km (0.108 R)
• M55: 24,485,282 km (0.12 R)
• M56: 25,614,147 km (0.081 R)
• M57: 26,266,843 km (0.062 R)
• M58: 27,256,283 km (0.084 R)
• M59: 29,158,121 km (0.086 R)
• M60: 29,725,695 km (0.097 R)
• M61: 30,296,710 km (0.11 R)
• M62: 30,583,639 km (0.113 R)
• M63: 30,698,680 km (0.106 R)
• M64: 31,682,286 km (0.026 R)
• M65: 33,029,415 km (0.051 R)
• M66: 33,739,556 km (0.099 R)
• M67: 34,814,416 km (0.108 R)
• M68: 35,961,084 km (0.117 R)
• M69: 36,386,690 km (0.109 R)
• M70: 36,447,576 km (0.113 R)
• M71: 37,796,800 km (0.092 R)
• M72: 38,167,503 km (0.108 R)
• M73: 38,725,952 km (0.081 R)
• M74: 38,912,800 km (0.116 R)
• M75: 39,788,246 km (0.03 R)
• M76: 40,102,402 km (0.063 R)
• M77: 40,291,344 km (0.091 R)
• M78: 42,197,071 km (0.102 R)
• M79: 42,581,688 km (0.088 R)
• M80: 42,645,865 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 519.1

Radius: 8.8

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 8.06 AU - 10.94 AU

Year: 10590 Days

Day: 5 Hours

Environment

Temp: -168 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 55,423,285 km

• M1: 513,270 km (0.119 R)
• M2: 631,153 km (0.107 R)
• M3: 742,155 km (0.099 R)
• M4: 808,726 km (0.072 R)
• M5: 1,039,705 km (0.093 R)
• M6: 1,373,308 km (0.111 R)
• M7: 1,563,298 km (0.112 R)
• M8: 2,207,915 km (0.118 R)
• M9: 2,636,064 km (0.103 R)
• M10: 2,766,962 km (0.058 R)
• M11: 2,900,104 km (0.106 R)
• M12: 3,144,996 km (0.069 R)
• M13: 3,228,172 km (0.077 R)
• M14: 3,312,097 km (0.088 R)
• M15: 3,482,190 km (0.026 R)
• M16: 3,597,081 km (0.107 R)
• M17: 3,890,143 km (0.109 R)
• M18: 4,282,688 km (0.118 R)
• M19: 4,436,923 km (0.108 R)
• M20: 5,007,938 km (0.092 R)
• M21: 5,368,320 km (0.113 R)
• M22: 6,323,053 km (0.087 R)
• M23: 6,463,675 km (0.054 R)
• M24: 6,820,017 km (0.1 R)
• M25: 6,964,379 km (0.06 R)
• M26: 8,154,879 km (0.118 R)
• M27: 8,656,481 km (0.101 R)
• M28: 9,327,427 km (0.085 R)
• M29: 10,551,886 km (0.118 R)
• M30: 11,268,011 km (0.115 R)
• M31: 11,353,431 km (0.059 R)
• M32: 11,653,525 km (0.04 R)
• M33: 11,999,844 km (0.074 R)
• M34: 12,481,549 km (0.091 R)
• M35: 12,880,377 km (0.1 R)
• M36: 13,238,514 km (0.058 R)
• M37: 13,373,601 km (0.094 R)
• M38: 13,736,226 km (0.115 R)
• M39: 14,610,177 km (0.111 R)
• M40: 15,077,521 km (0.041 R)
• M41: 15,644,646 km (0.071 R)
• M42: 15,930,827 km (0.085 R)
• M43: 16,946,148 km (0.089 R)
• M44: 17,141,971 km (0.105 R)
• M45: 17,733,780 km (0.038 R)
• M46: 18,182,125 km (0.118 R)
• M47: 18,988,159 km (0.077 R)
• M48: 19,089,735 km (0.082 R)
• M49: 19,549,151 km (0.103 R)
• M50: 19,857,472 km (0.112 R)
• M51: 20,271,110 km (0.081 R)
• M52: 21,423,013 km (0.051 R)
• M53: 23,625,842 km (0.083 R)
• M54: 24,394,476 km (0.082 R)
• M55: 25,562,686 km (0.073 R)
• M56: 25,787,232 km (0.085 R)
• M57: 27,549,944 km (0.115 R)
• M58: 28,068,899 km (0.086 R)
• M59: 28,300,626 km (0.05 R)
• M60: 28,474,908 km (0.096 R)
• M61: 29,233,818 km (0.108 R)
• M62: 29,527,478 km (0.11 R)
• M63: 30,592,914 km (0.099 R)
• M64: 31,130,270 km (0.116 R)
• M65: 31,550,490 km (0.112 R)
• M66: 31,670,916 km (0.111 R)
• M67: 32,396,316 km (0.106 R)
• M68: 33,249,772 km (0.114 R)
• M69: 33,556,298 km (0.088 R)
• M70: 34,172,342 km (0.044 R)
• M71: 35,290,437 km (0.102 R)
• M72: 35,853,972 km (0.106 R)
• M73: 36,673,170 km (0.102 R)
• M74: 36,990,018 km (0.108 R)
• M75: 37,307,615 km (0.119 R)
• M76: 37,626,258 km (0.112 R)
• M77: 38,009,677 km (0.116 R)
• M78: 38,458,770 km (0.117 R)
• M79: 38,651,751 km (0.086 R)
• M80: 40,272,345 km (0.043 R)
• M81: 41,058,183 km (0.091 R)
• M82: 41,518,795 km (0.069 R)
• M83: 42,445,404 km (0.06 R)
• M84: 42,644,818 km (0.093 R)
• M85: 42,844,531 km (0.099 R)
• M86: 43,646,675 km (0.07 R)
• M87: 43,780,864 km (0.034 R)
• M88: 44,453,755 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 938.1

Radius: 4.6

Gravity: 44.33 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 12.36 AU - 14.14 AU

Year: 17443 Days

Day: 21.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 55,423,285 km

• M1: 971,189 km (0.06 R)
• M2: 1,161,777 km (0.114 R)
• M3: 1,393,803 km (0.082 R)
• M4: 1,801,158 km (0.107 R)
• M5: 2,421,690 km (0.112 R)
• M6: 3,221,141 km (0.092 R)
• M7: 4,094,643 km (0.116 R)
• M8: 4,312,757 km (0.119 R)
• M9: 4,534,760 km (0.096 R)
• M10: 4,715,026 km (0.102 R)
• M11: 4,897,685 km (0.086 R)
• M12: 5,364,430 km (0.114 R)
• M13: 5,411,853 km (0.085 R)
• M14: 5,699,679 km (0.073 R)
• M15: 5,796,618 km (0.076 R)
• M16: 6,289,842 km (0.107 R)
• M17: 6,899,304 km (0.114 R)
• M18: 7,263,425 km (0.072 R)
• M19: 8,337,987 km (0.048 R)
• M20: 8,669,945 km (0.119 R)
• M21: 9,518,464 km (0.107 R)
• M22: 10,216,338 km (0.1 R)
• M23: 10,571,334 km (0.084 R)
• M24: 10,750,402 km (0.109 R)
• M25: 11,969,475 km (0.12 R)
• M26: 14,205,664 km (0.116 R)
• M27: 14,271,487 km (0.094 R)
• M28: 15,202,584 km (0.106 R)
• M29: 15,879,664 km (0.1 R)
• M30: 16,359,574 km (0.053 R)
• M31: 17,333,307 km (0.072 R)
• M32: 17,544,389 km (0.112 R)
• M33: 17,756,370 km (0.116 R)
• M34: 17,969,247 km (0.068 R)
• M35: 18,040,306 km (0.118 R)
• M36: 18,254,231 km (0.059 R)
• M37: 19,191,013 km (0.1 R)
• M38: 20,662,458 km (0.026 R)
• M39: 21,336,396 km (0.095 R)
• M40: 21,562,588 km (0.077 R)
• M41: 25,528,428 km (0.076 R)
• M42: 25,768,532 km (0.115 R)
• M43: 26,170,502 km (0.085 R)
• M44: 26,574,416 km (0.029 R)
• M45: 28,293,744 km (0.055 R)
• M46: 28,958,109 km (0.108 R)
• M47: 29,208,535 km (0.044 R)
• M48: 31,152,560 km (0.077 R)
• M49: 31,666,578 km (0.08 R)
• M50: 33,050,807 km (0.11 R)
• M51: 33,137,873 km (0.074 R)
• M52: 34,366,371 km (0.059 R)
• M53: 36,957,855 km (0.099 R)
• M54: 37,138,868 km (0.064 R)
• M55: 37,320,181 km (0.109 R)
• M56: 37,683,704 km (0.097 R)
• M57: 38,048,423 km (0.068 R)
• M58: 38,231,232 km (0.032 R)
• M59: 38,322,786 km (0.11 R)
• M60: 38,414,340 km (0.067 R)
• M61: 38,506,043 km (0.11 R)
• M62: 39,426,519 km (0.113 R)
• M63: 39,704,172 km (0.084 R)
• M64: 39,796,774 km (0.067 R)
• M65: 39,889,524 km (0.045 R)
• M66: 39,982,275 km (0.059 R)
• M67: 40,447,524 km (0.043 R)
• M68: 41,383,109 km (0.113 R)
• M69: 41,477,057 km (0.074 R)
• M70: 43,657,595 km (0.101 R)
• M71: 44,906,588 km (0.09 R)
• M72: 46,362,026 km (0.109 R)
• M73: 47,537,566 km (0.085 R)
• M74: 51,223,508 km (0.119 R)
• M75: 55,206,701 km (0.079 R)
• M76: 55,620,788 km (0.1 R)
• M77: 55,828,280 km (0.032 R)
• M78: 55,932,101 km (0.095 R)
• M79: 56,660,642 km (0.046 R)
• M80: 57,497,194 km (0.117 R)
• M81: 58,127,300 km (0.081 R)
• M82: 58,970,882 km (0.069 R)
• M83: 59,924,868 km (0.049 R)
• M84: 60,990,603 km (0.106 R)
• M85: 61,740,537 km (0.075 R)
• M86: 61,955,360 km (0.054 R)
• M87: 65,316,375 km (0.111 R)
• M88: 65,535,237 km (0.106 R)
• M89: 66,413,077 km (0.07 R)
• M90: 67,405,360 km (0.068 R)
• M91: 68,180,576 km (0.077 R)
• M92: 69,293,135 km (0.091 R)
• M93: 74,144,744 km (0.075 R)
• M94: 74,715,909 km (0.116 R)
• M95: 77,015,377 km (0.093 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 118.6

Radius: 7.1

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 17.04 AU - 20.9 AU

Year: 29881 Days

Day: 24.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 55,423,285 km

• M1: 634,295 km (0.113 R)
• M2: 763,398 km (0.111 R)
• M3: 881,281 km (0.1 R)
• M4: 1,607,280 km (0.068 R)
• M5: 2,274,486 km (0.071 R)
• M6: 3,175,215 km (0.089 R)
• M7: 3,432,374 km (0.114 R)
• M8: 3,530,659 km (0.117 R)
• M9: 5,299,654 km (0.116 R)
• M10: 5,604,684 km (0.092 R)
• M11: 6,757,635 km (0.12 R)
• M12: 8,155,478 km (0.052 R)
• M13: 9,639,189 km (0.097 R)
• M14: 9,871,215 km (0.115 R)
• M15: 11,842,018 km (0.117 R)
• M16: 11,891,535 km (0.096 R)
• M17: 12,897,132 km (0.049 R)
• M18: 13,721,266 km (0.079 R)
• M19: 13,825,386 km (0.109 R)
• M20: 14,350,325 km (0.12 R)
• M21: 15,203,781 km (0.105 R)
• M22: 16,959,611 km (0.112 R)
• M23: 18,778,422 km (0.098 R)
• M24: 22,413,202 km (0.094 R)
• M25: 22,597,357 km (0.026 R)
• M26: 22,843,894 km (0.107 R)
• M27: 23,401,595 km (0.066 R)
• M28: 23,901,252 km (0.045 R)
• M29: 26,256,969 km (0.055 R)
• M30: 27,102,197 km (0.035 R)
• M31: 28,619,269 km (0.094 R)
• M32: 29,086,464 km (0.097 R)
• M33: 29,287,374 km (0.065 R)
• M34: 30,095,950 km (0.077 R)
• M35: 34,743,357 km (0.082 R)
• M36: 36,029,450 km (0.074 R)
• M37: 36,389,383 km (0.118 R)
• M38: 38,574,409 km (0.055 R)
• M39: 39,312,226 km (0.068 R)
• M40: 39,756,981 km (0.102 R)
• M41: 40,726,674 km (0.114 R)
• M42: 43,070,125 km (0.072 R)
• M43: 44,065,848 km (0.085 R)
• M44: 44,836,875 km (0.096 R)
• M45: 47,098,047 km (0.092 R)
• M46: 51,406,466 km (0.095 R)
• M47: 51,568,331 km (0.099 R)
• M48: 51,730,495 km (0.053 R)
• M49: 54,595,294 km (0.091 R)

Kuiper Belt

Range: 30.3 - 54.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 367 - 17,264 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit