🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.74 AU - 0.76 AU

Year: 242 Days

Day: 45 Hours

Environment

Temp: 91 °C

Axial Tilt: 44 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 56,163,385 km

• M1: 325,375 km (0.068 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.92 AU - 1.22 AU

Year: 413 Days

Day: 27.4 Hours

Environment

Temp: 0 °C

Axial Tilt: 22 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 56,163,385 km

• M1: 265,387 km (0.086 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.89 AU - 2.45 AU

Year: 1192 Days

Day: 35.5 Hours

Environment

Temp: -90 °C

Axial Tilt: 154.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,163,385 km

• M1: 489,035 km (0.095 R)

Planet 4 - Terrestrial

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 3.77 AU - 4.33 AU

Year: 3038 Days

Day: 42.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 9.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568

Radius: 14.1

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 3.57 AU - 5.95 AU

Year: 3871 Days

Day: 14.7 Hours

Environment

Temp: -144 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 56,163,385 km

• M1: 258,206 km (0.085 R)
• M2: 358,287 km (0.088 R)
• M3: 1,288,337 km (0.064 R)
• M4: 1,432,549 km (0.119 R)
• M5: 1,554,771 km (0.116 R)
• M6: 1,652,458 km (0.071 R)
• M7: 1,781,262 km (0.112 R)
• M8: 2,064,750 km (0.042 R)
• M9: 2,299,170 km (0.118 R)
• M10: 2,460,436 km (0.041 R)
• M11: 2,608,837 km (0.101 R)
• M12: 2,914,915 km (0.098 R)
• M13: 3,125,698 km (0.116 R)
• M14: 3,580,924 km (0.098 R)
• M15: 3,807,116 km (0.118 R)
• M16: 4,135,633 km (0.11 R)
• M17: 4,433,333 km (0.061 R)
• M18: 4,738,213 km (0.111 R)
• M19: 5,007,938 km (0.062 R)
• M20: 5,454,488 km (0.11 R)
• M21: 5,584,489 km (0.111 R)
• M22: 5,825,491 km (0.06 R)
• M23: 6,137,402 km (0.117 R)
• M24: 6,272,639 km (0.097 R)
• M25: 6,707,819 km (0.113 R)
• M26: 7,176,509 km (0.058 R)
• M27: 7,271,653 km (0.092 R)
• M28: 7,631,735 km (0.116 R)
• M29: 7,850,747 km (0.052 R)
• M30: 8,294,903 km (0.106 R)
• M31: 8,520,048 km (0.071 R)
• M32: 8,646,009 km (0.044 R)
• M33: 8,772,718 km (0.11 R)
• M34: 8,925,458 km (0.092 R)
• M35: 9,493,182 km (0.112 R)
• M36: 9,755,128 km (0.097 R)
• M37: 10,259,572 km (0.098 R)
• M38: 10,609,481 km (0.043 R)
• M39: 11,404,594 km (0.05 R)
• M40: 11,627,345 km (0.098 R)
• M41: 12,048,762 km (0.068 R)
• M42: 12,762,494 km (0.091 R)
• M43: 12,935,877 km (0.098 R)
• M44: 13,110,009 km (0.104 R)
• M45: 13,314,210 km (0.079 R)
• M46: 13,637,192 km (0.108 R)
• M47: 14,350,774 km (0.103 R)
• M48: 14,742,421 km (0.11 R)
• M49: 15,505,520 km (0.107 R)
• M50: 15,845,406 km (0.12 R)
• M51: 16,000,689 km (0.091 R)
• M52: 16,094,188 km (0.115 R)
• M53: 16,501,094 km (0.082 R)
• M54: 16,753,316 km (0.092 R)
• M55: 17,165,757 km (0.102 R)
• M56: 17,485,298 km (0.087 R)
• M57: 17,774,621 km (0.077 R)
• M58: 18,065,439 km (0.079 R)
• M59: 18,521,114 km (0.117 R)
• M60: 18,717,536 km (0.03 R)
• M61: 18,947,618 km (0.082 R)
• M62: 19,377,412 km (0.067 R)
• M63: 19,543,466 km (0.077 R)
• M64: 19,710,118 km (0.116 R)
• M65: 19,944,239 km (0.032 R)
• M66: 20,145,597 km (0.076 R)
• M67: 20,246,576 km (0.119 R)
• M68: 20,584,218 km (0.077 R)
• M69: 20,992,022 km (0.101 R)
• M70: 21,436,776 km (0.08 R)
• M71: 23,529,351 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.2

Radius: 13.5

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 5.24 AU - 8.58 AU

Year: 6771 Days

Day: 14 Hours

Environment

Temp: -157 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 56,163,385 km

• M1: 174,132 km (0.068 R)
• M2: 576,401 km (0.09 R)
• M3: 865,274 km (0.05 R)
• M4: 1,167,761 km (0.104 R)
• M5: 1,467,555 km (0.089 R)
• M6: 1,655,749 km (0.109 R)
• M7: 1,872,217 km (0.111 R)
• M8: 2,140,596 km (0.077 R)
• M9: 2,691,864 km (0.076 R)
• M10: 2,807,503 km (0.058 R)
• M11: 3,140,059 km (0.119 R)
• M12: 3,360,866 km (0.111 R)
• M13: 3,895,977 km (0.112 R)
• M14: 4,133,539 km (0.037 R)
• M15: 4,595,497 km (0.116 R)
• M16: 5,421,876 km (0.096 R)
• M17: 5,777,320 km (0.113 R)
• M18: 6,479,832 km (0.117 R)
• M19: 6,825,552 km (0.065 R)
• M20: 7,535,095 km (0.06 R)
• M21: 7,633,680 km (0.119 R)
• M22: 7,798,986 km (0.098 R)
• M23: 8,133,187 km (0.108 R)
• M24: 8,335,893 km (0.117 R)
• M25: 8,850,210 km (0.083 R)
• M26: 9,093,905 km (0.117 R)
• M27: 9,304,389 km (0.104 R)
• M28: 9,445,759 km (0.084 R)
• M29: 9,766,198 km (0.08 R)
• M30: 10,199,134 km (0.06 R)
• M31: 11,046,606 km (0.113 R)
• M32: 11,309,150 km (0.092 R)
• M33: 11,763,778 km (0.108 R)
• M34: 11,916,667 km (0.098 R)
• M35: 12,147,347 km (0.107 R)
• M36: 12,418,269 km (0.113 R)
• M37: 12,966,096 km (0.052 R)
• M38: 13,203,358 km (0.1 R)
• M39: 13,402,174 km (0.108 R)
• M40: 13,561,945 km (0.092 R)
• M41: 13,682,221 km (0.113 R)
• M42: 14,045,146 km (0.064 R)
• M43: 14,288,841 km (0.055 R)
• M44: 14,780,419 km (0.078 R)
• M45: 15,069,742 km (0.114 R)
• M46: 16,587,412 km (0.09 R)
• M47: 17,932,895 km (0.083 R)
• M48: 18,330,227 km (0.081 R)
• M49: 18,418,789 km (0.113 R)
• M50: 18,552,081 km (0.117 R)
• M51: 18,953,901 km (0.041 R)
• M52: 20,222,042 km (0.09 R)
• M53: 20,359,672 km (0.094 R)
• M54: 20,497,451 km (0.107 R)
• M55: 20,820,284 km (0.091 R)
• M56: 22,033,971 km (0.116 R)
• M57: 22,696,989 km (0.101 R)
• M58: 22,840,005 km (0.091 R)
• M59: 23,222,676 km (0.119 R)
• M60: 23,655,612 km (0.102 R)
• M61: 23,848,893 km (0.119 R)
• M62: 24,285,868 km (0.087 R)
• M63: 24,529,712 km (0.117 R)
• M64: 24,774,455 km (0.059 R)
• M65: 25,315,550 km (0.116 R)
• M66: 26,610,170 km (0.084 R)
• M67: 27,875,170 km (0.11 R)
• M68: 28,181,696 km (0.118 R)
• M69: 28,746,577 km (0.077 R)
• M70: 28,952,873 km (0.071 R)
• M71: 29,211,527 km (0.081 R)
• M72: 29,574,901 km (0.105 R)
• M73: 30,726,655 km (0.05 R)
• M74: 31,255,034 km (0.101 R)
• M75: 32,428,031 km (0.1 R)
• M76: 33,019,990 km (0.091 R)
• M77: 35,699,886 km (0.091 R)
• M78: 36,032,891 km (0.068 R)
• M79: 36,701,893 km (0.106 R)
• M80: 37,600,228 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 714.6

Radius: 6.1

Gravity: 19.2 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 13.26 AU - 14.2 AU

Year: 18965 Days

Day: 24.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 49.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 56,163,385 km

• M1: 150,196 km (0.079 R)
• M2: 212,579 km (0.119 R)
• M3: 907,760 km (0.101 R)
• M4: 983,756 km (0.094 R)
• M5: 1,337,555 km (0.041 R)
• M6: 1,573,770 km (0.099 R)
• M7: 1,634,806 km (0.114 R)
• M8: 1,759,570 km (0.093 R)
• M9: 2,186,223 km (0.074 R)
• M10: 2,643,843 km (0.067 R)
• M11: 4,226,888 km (0.116 R)
• M12: 5,108,318 km (0.096 R)
• M13: 5,153,946 km (0.027 R)
• M14: 5,291,426 km (0.113 R)
• M15: 5,523,153 km (0.064 R)
• M16: 6,189,761 km (0.081 R)
• M17: 6,532,490 km (0.086 R)
• M18: 7,911,633 km (0.086 R)
• M19: 9,099,290 km (0.066 R)
• M20: 9,265,494 km (0.11 R)
• M21: 9,940,479 km (0.12 R)
• M22: 11,998,048 km (0.107 R)
• M23: 12,732,873 km (0.067 R)
• M24: 12,981,056 km (0.106 R)
• M25: 13,168,203 km (0.088 R)
• M26: 13,230,735 km (0.113 R)
• M27: 13,419,079 km (0.09 R)
• M28: 13,735,029 km (0.098 R)
• M29: 15,748,018 km (0.089 R)
• M30: 16,148,043 km (0.114 R)
• M31: 16,282,232 km (0.119 R)
• M32: 16,349,402 km (0.054 R)
• M33: 16,958,415 km (0.066 R)
• M34: 17,094,698 km (0.114 R)
• M35: 17,643,722 km (0.095 R)
• M36: 18,338,006 km (0.078 R)
• M37: 18,688,514 km (0.047 R)
• M38: 20,256,898 km (0.083 R)
• M39: 21,056,798 km (0.117 R)
• M40: 21,129,951 km (0.086 R)
• M41: 21,867,020 km (0.049 R)
• M42: 22,687,415 km (0.064 R)
• M43: 22,988,256 km (0.114 R)
• M44: 23,593,828 km (0.12 R)
• M45: 24,204,636 km (0.036 R)
• M46: 25,754,321 km (0.104 R)
• M47: 25,989,638 km (0.109 R)
• M48: 26,620,343 km (0.12 R)
• M49: 26,937,640 km (0.114 R)
• M50: 27,017,076 km (0.079 R)
• M51: 27,256,134 km (0.094 R)
• M52: 27,575,824 km (0.078 R)
• M53: 27,816,527 km (0.029 R)
• M54: 28,138,462 km (0.109 R)
• M55: 28,786,071 km (0.048 R)
• M56: 29,438,467 km (0.064 R)
• M57: 30,013,372 km (0.09 R)
• M58: 32,181,045 km (0.097 R)
• M59: 33,113,339 km (0.115 R)
• M60: 33,198,460 km (0.073 R)
• M61: 33,711,132 km (0.095 R)
• M62: 35,351,772 km (0.094 R)
• M63: 36,137,909 km (0.116 R)
• M64: 36,577,128 km (0.118 R)
• M65: 36,753,354 km (0.075 R)
• M66: 36,841,468 km (0.058 R)
• M67: 37,816,397 km (0.103 R)
• M68: 38,530,727 km (0.12 R)
• M69: 39,882,044 km (0.105 R)
• M70: 40,974,258 km (0.112 R)
• M71: 41,157,217 km (0.118 R)
• M72: 41,799,739 km (0.108 R)
• M73: 43,002,058 km (0.083 R)
• M74: 43,094,958 km (0.105 R)
• M75: 44,779,430 km (0.09 R)
• M76: 45,156,716 km (0.095 R)
• M77: 45,345,658 km (0.045 R)
• M78: 45,629,744 km (0.063 R)
• M79: 46,294,707 km (0.08 R)
• M80: 48,019,421 km (0.066 R)
• M81: 50,842,033 km (0.105 R)
• M82: 51,432,795 km (0.099 R)
• M83: 53,617,971 km (0.115 R)
• M84: 54,420,115 km (0.083 R)
• M85: 54,520,645 km (0.107 R)
• M86: 54,621,175 km (0.064 R)
• M87: 56,850,183 km (0.062 R)
• M88: 60,665,228 km (0.102 R)
• M89: 64,137,095 km (0.054 R)
• M90: 64,243,310 km (0.077 R)
• M91: 64,562,252 km (0.099 R)
• M92: 64,775,130 km (0.105 R)
• M93: 66,057,782 km (0.095 R)
• M94: 67,672,691 km (0.102 R)
• M95: 70,392,979 km (0.111 R)
• M96: 71,271,118 km (0.101 R)
• M97: 72,152,699 km (0.08 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 450.5

Radius: 3.6

Gravity: 34.76 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 15.65 AU - 17.23 AU

Year: 24849 Days

Day: 20.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 56,163,385 km

• M1: 57,296 km (0.053 R)
• M2: 89,460 km (0.101 R)
• M3: 132,993 km (0.049 R)
• M4: 461,958 km (0.101 R)
• M5: 502,948 km (0.114 R)
• M6: 726,298 km (0.062 R)
• M7: 774,319 km (0.079 R)
• M8: 1,057,657 km (0.116 R)
• M9: 1,460,225 km (0.079 R)
• M10: 1,709,754 km (0.101 R)
• M11: 1,872,367 km (0.12 R)
• M12: 2,608,089 km (0.118 R)
• M13: 2,833,084 km (0.091 R)
• M14: 3,585,861 km (0.12 R)
• M15: 3,793,652 km (0.051 R)
• M16: 4,005,483 km (0.115 R)
• M17: 5,496,675 km (0.08 R)
• M18: 6,474,596 km (0.111 R)
• M19: 6,932,066 km (0.057 R)
• M20: 7,035,139 km (0.088 R)
• M21: 7,242,631 km (0.118 R)
• M22: 8,201,703 km (0.107 R)
• M23: 8,640,623 km (0.102 R)
• M24: 8,751,475 km (0.102 R)
• M25: 9,256,368 km (0.059 R)
• M26: 9,713,091 km (0.065 R)
• M27: 10,060,457 km (0.079 R)
• M28: 10,235,636 km (0.111 R)
• M29: 10,411,862 km (0.081 R)
• M30: 12,166,196 km (0.087 R)
• M31: 12,477,809 km (0.102 R)
• M32: 12,540,490 km (0.115 R)
• M33: 12,603,172 km (0.058 R)
• M34: 13,172,541 km (0.112 R)
• M35: 13,300,148 km (0.12 R)
• M36: 13,814,915 km (0.108 R)
• M37: 14,467,460 km (0.107 R)
• M38: 15,130,029 km (0.083 R)
• M39: 15,532,298 km (0.119 R)
• M40: 18,231,193 km (0.034 R)
• M41: 18,373,461 km (0.03 R)
• M42: 18,730,850 km (0.109 R)
• M43: 18,946,271 km (0.069 R)
• M44: 19,743,329 km (0.085 R)
• M45: 19,962,639 km (0.093 R)
• M46: 20,035,942 km (0.118 R)
• M47: 20,922,160 km (0.101 R)
• M48: 21,745,696 km (0.101 R)
• M49: 22,275,273 km (0.083 R)
• M50: 23,039,119 km (0.098 R)
• M51: 24,279,136 km (0.089 R)
• M52: 25,540,695 km (0.077 R)
• M53: 27,553,983 km (0.043 R)
• M54: 28,044,664 km (0.032 R)
• M55: 29,701,311 km (0.105 R)
• M56: 33,281,637 km (0.075 R)
• M57: 35,654,109 km (0.061 R)
• M58: 35,831,981 km (0.103 R)
• M59: 36,099,462 km (0.089 R)
• M60: 37,085,462 km (0.115 R)
• M61: 37,265,727 km (0.094 R)
• M62: 39,819,662 km (0.102 R)
• M63: 40,374,221 km (0.101 R)
• M64: 41,024,374 km (0.07 R)
• M65: 42,241,053 km (0.111 R)
• M66: 43,279,861 km (0.051 R)
• M67: 43,374,706 km (0.027 R)
• M68: 46,835,054 km (0.083 R)
• M69: 48,204,323 km (0.027 R)
• M70: 49,289,506 km (0.116 R)
• M71: 50,382,768 km (0.113 R)
• M72: 50,482,549 km (0.116 R)
• M73: 51,182,817 km (0.088 R)
• M74: 54,424,753 km (0.088 R)
• M75: 55,142,822 km (0.093 R)
• M76: 56,899,550 km (0.086 R)
• M77: 57,107,342 km (0.11 R)
• M78: 57,211,462 km (0.03 R)
• M79: 57,419,702 km (0.084 R)
• M80: 59,727,099 km (0.047 R)
• M81: 62,492,865 km (0.12 R)
• M82: 63,999,315 km (0.112 R)
• M83: 64,323,644 km (0.116 R)
• M84: 64,757,029 km (0.068 R)
• M85: 65,735,548 km (0.03 R)
• M86: 66,281,281 km (0.079 R)
• M87: 66,828,660 km (0.1 R)
• M88: 67,157,626 km (0.072 R)
• M89: 68,368,920 km (0.065 R)
• M90: 69,809,547 km (0.082 R)
• M91: 69,920,848 km (0.107 R)
• M92: 70,589,550 km (0.077 R)
• M93: 73,511,496 km (0.09 R)
• M94: 74,987,279 km (0.061 R)
• M95: 75,785,833 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 107.6

Radius: 7.5

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 18.95 AU - 19.97 AU

Year: 32001 Days

Day: 15.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 56,163,385 km

• M1: 228,735 km (0.092 R)
• M2: 796,908 km (0.113 R)
• M3: 1,338,303 km (0.113 R)
• M4: 1,581,997 km (0.077 R)
• M5: 2,512,047 km (0.106 R)
• M6: 2,936,457 km (0.115 R)
• M7: 3,681,753 km (0.1 R)
• M8: 3,885,505 km (0.106 R)
• M9: 5,721,969 km (0.068 R)
• M10: 7,355,877 km (0.084 R)
• M11: 7,483,933 km (0.097 R)
• M12: 7,698,905 km (0.106 R)
• M13: 8,985,895 km (0.099 R)
• M14: 9,306,484 km (0.053 R)
• M15: 9,445,011 km (0.081 R)
• M16: 10,100,699 km (0.077 R)
• M17: 11,653,525 km (0.103 R)
• M18: 15,518,834 km (0.098 R)
• M19: 16,569,759 km (0.043 R)
• M20: 17,302,041 km (0.06 R)
• M21: 18,102,390 km (0.099 R)
• M22: 18,856,213 km (0.082 R)
• M23: 21,300,493 km (0.059 R)
• M24: 22,096,054 km (0.061 R)
• M25: 23,026,104 km (0.098 R)
• M26: 24,413,325 km (0.107 R)
• M27: 24,796,296 km (0.069 R)
• M28: 24,924,352 km (0.064 R)
• M29: 28,331,443 km (0.079 R)
• M30: 28,532,503 km (0.106 R)
• M31: 29,205,843 km (0.109 R)
• M32: 30,225,651 km (0.109 R)
• M33: 31,881,550 km (0.11 R)
• M34: 33,213,270 km (0.087 R)
• M35: 36,657,612 km (0.073 R)
• M36: 39,988,259 km (0.1 R)
• M37: 40,289,100 km (0.048 R)
• M38: 41,575,492 km (0.119 R)
• M39: 41,956,368 km (0.032 R)
• M40: 42,798,455 km (0.107 R)
• M41: 44,343,801 km (0.118 R)
• M42: 45,671,632 km (0.075 R)
• M43: 46,222,152 km (0.052 R)
• M44: 47,647,969 km (0.096 R)
• M45: 49,249,115 km (0.11 R)
• M46: 50,949,145 km (0.053 R)
• M47: 52,175,249 km (0.054 R)
• M48: 52,668,324 km (0.086 R)
• M49: 52,750,603 km (0.118 R)
• M50: 53,825,015 km (0.111 R)
• M51: 54,156,972 km (0.098 R)
• M52: 55,157,184 km (0.053 R)
• M53: 56,163,379 km (0.118 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 258 - 17,830 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit