🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.48 AU - 0.56 AU

Year: 165 Days

Day: 28.9 Hours

Environment

Temp: 15 °C

Axial Tilt: 39 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 81,673,167 km

• M1: 92,003 km (0.116 R)
• M2: 321,635 km (0.065 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.45 AU - 0.71 AU

Year: 194 Days

Day: 14.1 Hours

Environment

Temp: 1 °C

Axial Tilt: 7.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.53 AU - 0.79 AU

Year: 236 Days

Day: 34.1 Hours

Environment

Temp: -3 °C

Axial Tilt: 38.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.9 AU - 1.92 AU

Year: 1161 Days

Day: 32.9 Hours

Environment

Temp: -114 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.6

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.68 AU - 2.38 AU

Year: 1272 Days

Day: 41.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.7

Radius: 8.3

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 2.5 AU - 2.66 AU

Year: 1822 Days

Day: 13.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 81,673,167 km

• M1: 111,002 km (0.092 R)
• M2: 223,948 km (0.085 R)
• M3: 404,513 km (0.106 R)
• M4: 518,805 km (0.1 R)
• M5: 591,959 km (0.07 R)
• M6: 768,634 km (0.088 R)
• M7: 907,311 km (0.032 R)
• M8: 997,519 km (0.102 R)
• M9: 1,157,289 km (0.112 R)
• M10: 1,317,658 km (0.04 R)
• M11: 1,469,201 km (0.093 R)
• M12: 1,677,441 km (0.1 R)
• M13: 2,085,544 km (0.093 R)
• M14: 2,215,694 km (0.109 R)
• M15: 2,300,965 km (0.118 R)
• M16: 2,455,200 km (0.109 R)
• M17: 2,533,590 km (0.075 R)
• M18: 2,733,153 km (0.118 R)
• M19: 2,886,341 km (0.067 R)
• M20: 2,990,162 km (0.114 R)
• M21: 3,063,465 km (0.111 R)
• M22: 3,212,016 km (0.063 R)
• M23: 3,341,268 km (0.049 R)
• M24: 3,549,359 km (0.059 R)
• M25: 3,784,377 km (0.12 R)
• M26: 3,909,591 km (0.112 R)
• M27: 4,082,526 km (0.108 R)
• M28: 4,435,876 km (0.078 R)
• M29: 4,567,971 km (0.099 R)
• M30: 4,689,145 km (0.114 R)
• M31: 5,021,851 km (0.102 R)
• M32: 5,084,233 km (0.119 R)
• M33: 5,172,047 km (0.102 R)
• M34: 5,298,457 km (0.103 R)
• M35: 5,451,646 km (0.119 R)
• M36: 5,606,031 km (0.117 R)
• M37: 5,827,435 km (0.078 R)
• M38: 5,919,438 km (0.092 R)
• M39: 6,131,568 km (0.067 R)
• M40: 6,536,081 km (0.101 R)
• M41: 6,590,684 km (0.107 R)
• M42: 6,659,200 km (0.11 R)
• M43: 6,824,505 km (0.027 R)
• M44: 6,921,445 km (0.089 R)
• M45: 7,060,870 km (0.1 R)
• M46: 7,229,467 km (0.055 R)
• M47: 7,314,289 km (0.116 R)
• M48: 7,484,830 km (0.084 R)
• M49: 7,743,186 km (0.111 R)
• M50: 7,873,486 km (0.05 R)
• M51: 8,077,537 km (0.027 R)
• M52: 8,209,632 km (0.119 R)
• M53: 8,283,384 km (0.113 R)
• M54: 8,416,526 km (0.052 R)
• M55: 8,490,876 km (0.088 R)
• M56: 8,595,445 km (0.05 R)
• M57: 8,655,284 km (0.054 R)
• M58: 8,715,273 km (0.047 R)
• M59: 9,078,197 km (0.052 R)
• M60: 9,246,345 km (0.111 R)
• M61: 9,307,680 km (0.088 R)
• M62: 9,461,617 km (0.115 R)
• M63: 9,647,567 km (0.111 R)
• M64: 9,850,421 km (0.113 R)
• M65: 9,975,934 km (0.064 R)
• M66: 10,133,461 km (0.08 R)
• M67: 10,323,749 km (0.09 R)
• M68: 10,467,213 km (0.097 R)
• M69: 10,836,870 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.5

Radius: 13.8

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 3.99 AU - 6.35 AU

Year: 5169 Days

Day: 12.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 81,673,167 km

• M1: 178,919 km (0.119 R)
• M2: 306,526 km (0.082 R)
• M3: 407,654 km (0.098 R)
• M4: 539,450 km (0.034 R)
• M5: 712,235 km (0.116 R)
• M6: 855,700 km (0.036 R)
• M7: 966,103 km (0.113 R)
• M8: 1,212,192 km (0.107 R)
• M9: 1,318,556 km (0.115 R)
• M10: 1,418,337 km (0.112 R)
• M11: 1,562,400 km (0.092 R)
• M12: 2,248,606 km (0.038 R)
• M13: 2,530,298 km (0.039 R)
• M14: 2,656,409 km (0.047 R)
• M15: 3,291,303 km (0.077 R)
• M16: 3,415,619 km (0.061 R)
• M17: 3,527,518 km (0.092 R)
• M18: 3,972,721 km (0.11 R)
• M19: 4,314,851 km (0.111 R)
• M20: 4,451,285 km (0.107 R)
• M21: 4,681,965 km (0.047 R)
• M22: 4,775,463 km (0.065 R)
• M23: 4,916,833 km (0.068 R)
• M24: 5,091,414 km (0.116 R)
• M25: 5,219,769 km (0.112 R)
• M26: 5,316,708 km (0.085 R)
• M27: 5,660,933 km (0.114 R)
• M28: 5,794,075 km (0.116 R)
• M29: 5,978,679 km (0.106 R)
• M30: 6,080,256 km (0.111 R)
• M31: 6,182,431 km (0.106 R)
• M32: 6,336,816 km (0.098 R)
• M33: 6,475,045 km (0.064 R)
• M34: 6,684,482 km (0.106 R)
• M35: 6,807,601 km (0.091 R)
• M36: 7,398,512 km (0.068 R)
• M37: 8,061,829 km (0.066 R)
• M38: 8,306,272 km (0.085 R)
• M39: 8,591,107 km (0.106 R)
• M40: 8,918,127 km (0.072 R)
• M41: 9,053,813 km (0.1 R)
• M42: 9,307,980 km (0.088 R)
• M43: 9,683,470 km (0.073 R)
• M44: 9,843,091 km (0.052 R)
• M45: 10,165,026 km (0.044 R)
• M46: 10,429,216 km (0.092 R)
• M47: 10,798,722 km (0.107 R)
• M48: 10,984,972 km (0.099 R)
• M49: 11,109,886 km (0.03 R)
• M50: 11,256,193 km (0.079 R)
• M51: 11,571,694 km (0.083 R)
• M52: 11,826,310 km (0.105 R)
• M53: 11,997,151 km (0.109 R)
• M54: 12,753,817 km (0.088 R)
• M55: 13,060,941 km (0.086 R)
• M56: 13,237,467 km (0.059 R)
• M57: 13,615,351 km (0.084 R)
• M58: 13,704,661 km (0.074 R)
• M59: 14,427,219 km (0.05 R)
• M60: 15,301,319 km (0.086 R)
• M61: 15,744,727 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.2

Radius: 10

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 6.36 AU - 7.86 AU

Year: 8336 Days

Day: 11.1 Hours

Environment

Temp: -187 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 81,673,167 km

• M1: 151,842 km (0.116 R)
• M2: 233,073 km (0.11 R)
• M3: 580,141 km (0.092 R)
• M4: 703,409 km (0.058 R)
• M5: 882,478 km (0.104 R)
• M6: 1,060,051 km (0.08 R)
• M7: 1,179,430 km (0.069 R)
• M8: 1,358,049 km (0.102 R)
• M9: 1,545,795 km (0.087 R)
• M10: 1,702,274 km (0.091 R)
• M11: 1,905,278 km (0.061 R)
• M12: 2,181,137 km (0.118 R)
• M13: 2,402,093 km (0.109 R)
• M14: 2,469,861 km (0.07 R)
• M15: 2,914,167 km (0.107 R)
• M16: 3,010,807 km (0.108 R)
• M17: 3,770,465 km (0.115 R)
• M18: 4,336,393 km (0.085 R)
• M19: 5,367,721 km (0.118 R)
• M20: 5,516,870 km (0.075 R)
• M21: 5,667,366 km (0.111 R)
• M22: 5,758,321 km (0.117 R)
• M23: 6,984,425 km (0.068 R)
• M24: 7,213,011 km (0.08 R)
• M25: 7,311,596 km (0.054 R)
• M26: 7,377,718 km (0.119 R)
• M27: 7,510,412 km (0.073 R)
• M28: 7,778,042 km (0.05 R)
• M29: 8,185,696 km (0.086 R)
• M30: 8,495,962 km (0.097 R)
• M31: 8,565,376 km (0.073 R)
• M32: 8,880,429 km (0.107 R)
• M33: 8,986,194 km (0.064 R)
• M34: 9,413,745 km (0.07 R)
• M35: 10,214,991 km (0.049 R)
• M36: 10,698,641 km (0.076 R)
• M37: 11,342,511 km (0.026 R)
• M38: 11,572,742 km (0.112 R)
• M39: 11,843,364 km (0.09 R)
• M40: 12,548,718 km (0.106 R)
• M41: 12,747,085 km (0.063 R)
• M42: 12,986,442 km (0.109 R)
• M43: 13,066,626 km (0.094 R)
• M44: 13,146,960 km (0.101 R)
• M45: 13,672,946 km (0.1 R)
• M46: 15,716,752 km (0.101 R)
• M47: 16,188,584 km (0.097 R)
• M48: 17,676,335 km (0.051 R)
• M49: 17,765,196 km (0.084 R)
• M50: 18,077,407 km (0.089 R)
• M51: 19,665,538 km (0.076 R)
• M52: 19,803,766 km (0.076 R)
• M53: 20,081,121 km (0.115 R)
• M54: 20,968,086 km (0.083 R)
• M55: 21,487,341 km (0.075 R)
• M56: 21,915,490 km (0.095 R)
• M57: 22,154,397 km (0.11 R)
• M58: 24,097,674 km (0.09 R)
• M59: 24,591,945 km (0.12 R)
• M60: 24,989,726 km (0.113 R)
• M61: 25,640,776 km (0.075 R)
• M62: 26,297,361 km (0.117 R)
• M63: 26,704,267 km (0.067 R)
• M64: 27,061,956 km (0.1 R)
• M65: 28,352,237 km (0.043 R)
• M66: 29,557,098 km (0.094 R)
• M67: 31,153,607 km (0.065 R)
• M68: 32,179,100 km (0.089 R)
• M69: 32,342,162 km (0.119 R)
• M70: 32,668,884 km (0.102 R)
• M71: 33,051,406 km (0.077 R)
• M72: 33,160,911 km (0.119 R)
• M73: 33,820,937 km (0.108 R)
• M74: 34,041,893 km (0.115 R)
• M75: 34,540,802 km (0.119 R)
• M76: 35,658,148 km (0.094 R)
• M77: 35,770,646 km (0.044 R)
• M78: 36,844,160 km (0.115 R)
• M79: 37,413,380 km (0.096 R)
• M80: 37,699,262 km (0.091 R)
• M81: 37,985,592 km (0.1 R)
• M82: 38,215,374 km (0.105 R)
• M83: 38,387,861 km (0.097 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 154.3

Radius: 7.7

Gravity: 2.6 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 7.33 AU - 12.17 AU

Year: 13387 Days

Day: 22 Hours

Environment

Temp: -198 °C

Axial Tilt: 123.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 81,673,167 km

• M1: 125,961 km (0.064 R)
• M2: 367,861 km (0.119 R)
• M3: 432,936 km (0.106 R)
• M4: 490,681 km (0.095 R)
• M5: 778,358 km (0.094 R)
• M6: 850,613 km (0.071 R)
• M7: 955,930 km (0.109 R)
• M8: 1,097,749 km (0.083 R)
• M9: 1,163,123 km (0.111 R)
• M10: 1,332,319 km (0.097 R)
• M11: 1,527,843 km (0.108 R)
• M12: 1,657,096 km (0.039 R)
• M13: 1,926,671 km (0.117 R)
• M14: 2,066,695 km (0.097 R)
• M15: 2,251,598 km (0.092 R)
• M16: 2,335,672 km (0.096 R)
• M17: 2,704,281 km (0.079 R)
• M18: 2,771,301 km (0.035 R)
• M19: 2,884,247 km (0.113 R)
• M20: 3,137,965 km (0.117 R)
• M21: 3,350,992 km (0.091 R)
• M22: 3,617,725 km (0.069 R)
• M23: 3,666,943 km (0.076 R)
• M24: 4,171,985 km (0.064 R)
• M25: 4,223,597 km (0.091 R)
• M26: 4,538,351 km (0.109 R)
• M27: 4,833,657 km (0.085 R)
• M28: 5,162,772 km (0.028 R)
• M29: 6,075,918 km (0.115 R)
• M30: 6,252,742 km (0.071 R)
• M31: 6,311,983 km (0.113 R)
• M32: 8,241,197 km (0.052 R)
• M33: 8,502,545 km (0.093 R)
• M34: 9,134,147 km (0.115 R)
• M35: 9,336,702 km (0.041 R)
• M36: 9,404,620 km (0.073 R)
• M37: 9,884,231 km (0.09 R)
• M38: 9,953,345 km (0.08 R)
• M39: 11,298,080 km (0.067 R)
• M40: 11,771,258 km (0.042 R)
• M41: 12,362,319 km (0.096 R)
• M42: 12,436,819 km (0.119 R)
• M43: 12,586,417 km (0.076 R)
• M44: 12,849,709 km (0.108 R)
• M45: 13,727,250 km (0.053 R)
• M46: 13,881,934 km (0.098 R)
• M47: 13,959,426 km (0.067 R)
• M48: 14,037,067 km (0.105 R)
• M49: 14,466,862 km (0.119 R)
• M50: 14,703,077 km (0.108 R)
• M51: 15,660,803 km (0.086 R)
• M52: 16,065,764 km (0.104 R)
• M53: 16,474,166 km (0.041 R)
• M54: 17,010,175 km (0.114 R)
• M55: 17,301,293 km (0.084 R)
• M56: 18,567,041 km (0.056 R)
• M57: 19,038,723 km (0.112 R)
• M58: 20,125,102 km (0.06 R)
• M59: 20,476,957 km (0.12 R)
• M60: 20,698,062 km (0.106 R)
• M61: 20,919,766 km (0.086 R)
• M62: 21,053,208 km (0.107 R)
• M63: 21,950,047 km (0.114 R)
• M64: 22,130,911 km (0.104 R)
• M65: 23,734,450 km (0.046 R)
• M66: 24,059,676 km (0.11 R)
• M67: 24,339,574 km (0.083 R)
• M68: 25,280,395 km (0.05 R)
• M69: 26,810,332 km (0.104 R)
• M70: 26,906,972 km (0.086 R)
• M71: 27,343,200 km (0.094 R)
• M72: 27,586,595 km (0.089 R)
• M73: 28,567,060 km (0.085 R)
• M74: 28,715,162 km (0.104 R)
• M75: 29,310,112 km (0.071 R)
• M76: 30,059,299 km (0.084 R)
• M77: 30,209,944 km (0.088 R)
• M78: 30,511,982 km (0.119 R)
• M79: 30,612,811 km (0.069 R)
• M80: 30,966,759 km (0.111 R)
• M81: 31,118,900 km (0.084 R)
• M82: 32,139,307 km (0.051 R)
• M83: 34,422,620 km (0.088 R)
• M84: 34,527,787 km (0.093 R)
• M85: 34,685,463 km (0.119 R)
• M86: 34,738,122 km (0.06 R)
• M87: 35,160,137 km (0.115 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 851.6

Radius: 5.2

Gravity: 31.49 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 10.47 AU - 14.97 AU

Year: 19948 Days

Day: 23.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 81,673,167 km

• M1: 71,957 km (0.084 R)
• M2: 146,307 km (0.098 R)
• M3: 229,782 km (0.099 R)
• M4: 368,160 km (0.097 R)
• M5: 406,757 km (0.06 R)
• M6: 598,990 km (0.088 R)
• M7: 792,270 km (0.061 R)
• M8: 843,732 km (0.111 R)
• M9: 949,797 km (0.092 R)
• M10: 1,088,773 km (0.09 R)
• M11: 1,543,850 km (0.104 R)
• M12: 1,842,447 km (0.075 R)
• M13: 1,911,262 km (0.042 R)
• M14: 2,016,131 km (0.11 R)
• M15: 2,881,105 km (0.09 R)
• M16: 2,921,048 km (0.077 R)
• M17: 3,247,321 km (0.103 R)
• M18: 5,435,190 km (0.07 R)
• M19: 7,974,314 km (0.06 R)
• M20: 8,030,713 km (0.095 R)
• M21: 8,371,198 km (0.051 R)
• M22: 10,021,861 km (0.05 R)
• M23: 10,388,375 km (0.039 R)
• M24: 11,134,570 km (0.077 R)
• M25: 11,641,407 km (0.05 R)
• M26: 13,074,106 km (0.08 R)
• M27: 13,743,407 km (0.054 R)
• M28: 13,946,411 km (0.035 R)
• M29: 14,082,246 km (0.11 R)
• M30: 14,355,262 km (0.114 R)
• M31: 14,906,680 km (0.088 R)
• M32: 15,535,290 km (0.087 R)
• M33: 15,888,191 km (0.116 R)
• M34: 16,172,427 km (0.078 R)
• M35: 16,386,652 km (0.09 R)
• M36: 16,458,309 km (0.087 R)
• M37: 17,253,272 km (0.088 R)
• M38: 19,483,926 km (0.103 R)
• M39: 20,401,260 km (0.111 R)
• M40: 21,254,417 km (0.102 R)
• M41: 21,724,752 km (0.083 R)
• M42: 23,640,054 km (0.109 R)
• M43: 25,276,804 km (0.111 R)
• M44: 26,360,192 km (0.115 R)
• M45: 26,696,638 km (0.116 R)
• M46: 26,949,907 km (0.106 R)
• M47: 28,658,314 km (0.064 R)
• M48: 29,004,185 km (0.067 R)
• M49: 29,264,485 km (0.1 R)
• M50: 29,787,479 km (0.034 R)
• M51: 31,463,873 km (0.064 R)
• M52: 31,553,033 km (0.11 R)
• M53: 34,447,303 km (0.107 R)
• M54: 35,647,228 km (0.073 R)
• M55: 39,423,976 km (0.03 R)
• M56: 39,616,209 km (0.106 R)
• M57: 40,194,554 km (0.089 R)
• M58: 41,164,547 km (0.081 R)
• M59: 42,338,890 km (0.112 R)
• M60: 43,722,670 km (0.085 R)
• M61: 45,725,038 km (0.057 R)
• M62: 46,534,362 km (0.078 R)
• M63: 48,681,391 km (0.041 R)
• M64: 49,404,098 km (0.088 R)
• M65: 51,069,572 km (0.057 R)
• M66: 51,279,009 km (0.078 R)
• M67: 51,383,877 km (0.08 R)
• M68: 52,225,065 km (0.099 R)
• M69: 52,647,530 km (0.114 R)
• M70: 53,176,957 km (0.117 R)
• M71: 53,708,328 km (0.09 R)
• M72: 54,348,158 km (0.119 R)
• M73: 56,066,888 km (0.104 R)
• M74: 57,585,307 km (0.025 R)
• M75: 57,803,271 km (0.107 R)
• M76: 58,349,453 km (0.105 R)
• M77: 59,777,813 km (0.052 R)
• M78: 60,330,128 km (0.053 R)
• M79: 63,229,634 km (0.114 R)
• M80: 63,679,774 km (0.061 R)
• M81: 64,018,015 km (0.083 R)
• M82: 64,130,962 km (0.083 R)
• M83: 68,354,259 km (0.031 R)
• M84: 68,585,089 km (0.073 R)
• M85: 68,931,856 km (0.065 R)
• M86: 69,163,434 km (0.118 R)
• M87: 69,395,161 km (0.105 R)
• M88: 76,107,468 km (0.119 R)
• M89: 77,065,941 km (0.1 R)
• M90: 77,546,749 km (0.102 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 159 - 17,423 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit