🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.43

Radius: 1.15

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.45 AU - 0.57 AU

Year: 135 Days

Day: 34.4 Hours

Environment

Temp: 190 °C

Axial Tilt: 4.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 99,539,806 km

• M1: 63,878 km (0.119 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.01 AU - 2.25 AU

Year: 1153 Days

Day: 45.2 Hours

Environment

Temp: -79 °C

Axial Tilt: 23 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.62

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.7 AU - 3.22 AU

Year: 1889 Days

Day: 13.8 Hours

Environment

Temp: -103 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 99,539,806 km

• M1: 124,615 km (0.036 R)
• M2: 607,218 km (0.068 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 3.16 AU - 3.54 AU

Year: 2274 Days

Day: 29.9 Hours

Environment

Temp: -106 °C

Axial Tilt: 39.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.8

Radius: 14.7

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 4.23 AU - 6.59 AU

Year: 4667 Days

Day: 8.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 99,539,806 km

• M1: 214,075 km (0.115 R)
• M2: 321,187 km (0.119 R)
• M3: 432,338 km (0.109 R)
• M4: 1,011,282 km (0.119 R)
• M5: 1,229,246 km (0.077 R)
• M6: 1,352,215 km (0.108 R)
• M7: 1,594,863 km (0.032 R)
• M8: 2,086,741 km (0.108 R)
• M9: 2,331,184 km (0.084 R)
• M10: 2,525,810 km (0.113 R)
• M11: 2,665,385 km (0.044 R)
• M12: 2,869,437 km (0.056 R)
• M13: 3,271,556 km (0.055 R)
• M14: 3,490,567 km (0.111 R)
• M15: 4,059,488 km (0.077 R)
• M16: 4,319,190 km (0.103 R)
• M17: 4,756,016 km (0.115 R)
• M18: 4,904,865 km (0.109 R)
• M19: 5,004,946 km (0.089 R)
• M20: 5,258,365 km (0.051 R)
• M21: 6,205,320 km (0.05 R)
• M22: 6,313,778 km (0.106 R)
• M23: 6,587,841 km (0.065 R)
• M24: 7,119,512 km (0.042 R)
• M25: 7,694,267 km (0.107 R)
• M26: 7,987,180 km (0.058 R)
• M27: 8,105,512 km (0.101 R)
• M28: 8,343,672 km (0.065 R)
• M29: 8,523,937 km (0.099 R)
• M30: 9,041,695 km (0.111 R)
• M31: 9,195,931 km (0.096 R)
• M32: 10,139,893 km (0.111 R)
• M33: 10,590,931 km (0.058 R)
• M34: 11,313,040 km (0.105 R)
• M35: 11,882,110 km (0.109 R)
• M36: 12,187,140 km (0.065 R)
• M37: 13,222,657 km (0.098 R)
• M38: 14,250,394 km (0.084 R)
• M39: 14,358,254 km (0.104 R)
• M40: 15,895,821 km (0.081 R)
• M41: 16,082,369 km (0.053 R)
• M42: 16,269,666 km (0.089 R)
• M43: 17,064,180 km (0.099 R)
• M44: 17,832,515 km (0.119 R)
• M45: 18,065,289 km (0.11 R)
• M46: 18,808,940 km (0.057 R)
• M47: 20,813,552 km (0.116 R)
• M48: 21,099,732 km (0.059 R)
• M49: 21,675,684 km (0.055 R)
• M50: 21,882,728 km (0.06 R)
• M51: 22,215,284 km (0.093 R)
• M52: 22,423,973 km (0.118 R)
• M53: 22,885,482 km (0.115 R)
• M54: 23,180,788 km (0.082 R)
• M55: 23,860,412 km (0.034 R)
• M56: 24,374,579 km (0.089 R)
• M57: 25,152,638 km (0.09 R)
• M58: 25,763,296 km (0.11 R)
• M59: 26,158,534 km (0.077 R)
• M60: 26,644,428 km (0.086 R)
• M61: 27,044,153 km (0.095 R)
• M62: 27,535,283 km (0.059 R)
• M63: 28,844,414 km (0.089 R)
• M64: 30,173,891 km (0.047 R)
• M65: 30,358,793 km (0.118 R)
• M66: 30,869,371 km (0.099 R)
• M67: 30,962,421 km (0.099 R)
• M68: 31,055,770 km (0.044 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.1

Radius: 13.2

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 5.31 AU - 7.45 AU

Year: 5976 Days

Day: 6.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 99,539,806 km

• M1: 167,550 km (0.117 R)
• M2: 269,725 km (0.117 R)
• M3: 474,225 km (0.118 R)
• M4: 607,068 km (0.11 R)
• M5: 754,721 km (0.105 R)
• M6: 855,849 km (0.1 R)
• M7: 1,057,208 km (0.113 R)
• M8: 1,189,303 km (0.064 R)
• M9: 1,345,184 km (0.116 R)
• M10: 1,794,875 km (0.085 R)
• M11: 1,934,899 km (0.062 R)
• M12: 2,037,224 km (0.046 R)
• M13: 2,443,083 km (0.061 R)
• M14: 2,599,263 km (0.077 R)
• M15: 3,016,192 km (0.064 R)
• M16: 4,203,251 km (0.09 R)
• M17: 4,748,685 km (0.113 R)
• M18: 4,860,435 km (0.117 R)
• M19: 5,727,055 km (0.115 R)
• M20: 6,147,874 km (0.071 R)
• M21: 7,275,992 km (0.072 R)
• M22: 7,930,333 km (0.092 R)
• M23: 8,063,475 km (0.06 R)
• M24: 8,501,198 km (0.117 R)
• M25: 8,637,482 km (0.067 R)
• M26: 8,946,850 km (0.102 R)
• M27: 9,683,021 km (0.096 R)
• M28: 9,825,439 km (0.109 R)
• M29: 10,584,498 km (0.026 R)
• M30: 10,768,204 km (0.096 R)
• M31: 10,989,759 km (0.11 R)
• M32: 11,101,209 km (0.046 R)
• M33: 11,929,832 km (0.047 R)
• M34: 12,351,548 km (0.071 R)
• M35: 12,506,083 km (0.112 R)
• M36: 12,622,470 km (0.069 R)
• M37: 13,091,609 km (0.079 R)
• M38: 13,686,111 km (0.101 R)
• M39: 14,655,505 km (0.064 R)
• M40: 15,272,746 km (0.104 R)
• M41: 15,397,211 km (0.107 R)
• M42: 15,688,927 km (0.108 R)
• M43: 16,024,625 km (0.079 R)
• M44: 17,131,948 km (0.097 R)
• M45: 17,304,434 km (0.06 R)
• M46: 18,088,178 km (0.055 R)
• M47: 20,599,477 km (0.049 R)
• M48: 20,921,113 km (0.102 R)
• M49: 21,151,793 km (0.069 R)
• M50: 22,223,960 km (0.093 R)
• M51: 22,412,304 km (0.118 R)
• M52: 22,506,551 km (0.064 R)
• M53: 24,275,695 km (0.111 R)
• M54: 24,469,574 km (0.104 R)
• M55: 24,712,671 km (0.065 R)
• M56: 24,858,977 km (0.088 R)
• M57: 25,397,679 km (0.092 R)
• M58: 26,886,777 km (0.096 R)
• M59: 26,987,007 km (0.107 R)
• M60: 28,301,823 km (0.11 R)
• M61: 28,710,674 km (0.054 R)
• M62: 29,430,688 km (0.031 R)
• M63: 29,896,686 km (0.101 R)
• M64: 30,626,574 km (0.082 R)
• M65: 30,941,178 km (0.042 R)
• M66: 31,362,296 km (0.095 R)
• M67: 31,679,294 km (0.079 R)
• M68: 31,838,316 km (0.116 R)
• M69: 31,997,489 km (0.047 R)
• M70: 33,280,739 km (0.111 R)
• M71: 33,388,450 km (0.074 R)
• M72: 33,874,493 km (0.026 R)
• M73: 34,199,868 km (0.12 R)
• M74: 34,471,837 km (0.092 R)
• M75: 34,963,117 km (0.095 R)
• M76: 35,346,835 km (0.054 R)
• M77: 36,063,110 km (0.074 R)
• M78: 36,784,172 km (0.04 R)
• M79: 36,951,272 km (0.07 R)
• M80: 37,118,672 km (0.066 R)
• M81: 37,398,121 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 315.4

Radius: 10.3

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 8.99 AU - 11.05 AU

Year: 11763 Days

Day: 12.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 99,539,806 km

• M1: 227,389 km (0.071 R)
• M2: 520,601 km (0.067 R)
• M3: 809,474 km (0.082 R)
• M4: 1,183,170 km (0.051 R)
• M5: 1,294,171 km (0.068 R)
• M6: 1,669,213 km (0.105 R)
• M7: 2,637,111 km (0.079 R)
• M8: 2,959,345 km (0.097 R)
• M9: 3,035,490 km (0.1 R)
• M10: 3,426,240 km (0.038 R)
• M11: 3,750,568 km (0.095 R)
• M12: 4,255,611 km (0.114 R)
• M13: 4,399,823 km (0.051 R)
• M14: 5,360,391 km (0.087 R)
• M15: 6,951,813 km (0.119 R)
• M16: 7,605,855 km (0.052 R)
• M17: 8,568,816 km (0.053 R)
• M18: 10,803,958 km (0.06 R)
• M19: 10,922,141 km (0.099 R)
• M20: 11,001,278 km (0.114 R)
• M21: 11,640,809 km (0.105 R)
• M22: 12,997,661 km (0.064 R)
• M23: 14,403,881 km (0.119 R)
• M24: 14,490,648 km (0.05 R)
• M25: 14,883,343 km (0.101 R)
• M26: 15,545,612 km (0.089 R)
• M27: 15,992,461 km (0.114 R)
• M28: 16,172,427 km (0.097 R)
• M29: 17,266,137 km (0.092 R)
• M30: 17,358,439 km (0.086 R)
• M31: 18,055,266 km (0.039 R)
• M32: 18,195,739 km (0.112 R)
• M33: 19,428,425 km (0.034 R)
• M34: 19,524,467 km (0.102 R)
• M35: 19,813,191 km (0.113 R)
• M36: 21,973,833 km (0.043 R)
• M37: 22,879,050 km (0.114 R)
• M38: 24,363,060 km (0.077 R)
• M39: 25,667,255 km (0.071 R)
• M40: 25,930,846 km (0.074 R)
• M41: 26,567,086 km (0.082 R)
• M42: 27,154,856 km (0.107 R)
• M43: 27,531,095 km (0.057 R)
• M44: 28,288,658 km (0.109 R)
• M45: 28,724,736 km (0.111 R)
• M46: 31,499,926 km (0.059 R)
• M47: 31,951,861 km (0.107 R)
• M48: 32,519,735 km (0.118 R)
• M49: 32,919,311 km (0.065 R)
• M50: 33,665,654 km (0.12 R)
• M51: 34,475,577 km (0.088 R)
• M52: 35,526,502 km (0.104 R)
• M53: 35,937,896 km (0.074 R)
• M54: 36,587,750 km (0.042 R)
• M55: 36,943,793 km (0.119 R)
• M56: 37,539,940 km (0.086 R)
• M57: 37,659,469 km (0.106 R)
• M58: 39,347,082 km (0.113 R)
• M59: 39,772,838 km (0.119 R)
• M60: 40,200,089 km (0.03 R)
• M61: 40,628,837 km (0.116 R)
• M62: 40,936,111 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 972.7

Radius: 15

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 9.2 AU - 12.52 AU

Year: 13272 Days

Day: 14.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 99,539,806 km

• M1: 209,437 km (0.087 R)
• M2: 412,890 km (0.077 R)
• M3: 506,987 km (0.118 R)
• M4: 1,237,025 km (0.09 R)
• M5: 2,056,372 km (0.068 R)
• M6: 2,553,636 km (0.109 R)
• M7: 2,683,786 km (0.076 R)
• M8: 2,849,989 km (0.058 R)
• M9: 3,262,730 km (0.032 R)
• M10: 3,369,094 km (0.105 R)
• M11: 3,918,118 km (0.112 R)
• M12: 4,145,806 km (0.103 R)
• M13: 4,535,059 km (0.092 R)
• M14: 4,654,139 km (0.092 R)
• M15: 4,977,121 km (0.115 R)
• M16: 5,224,107 km (0.091 R)
• M17: 6,745,069 km (0.089 R)
• M18: 6,927,279 km (0.08 R)
• M19: 7,249,962 km (0.111 R)
• M20: 7,530,607 km (0.065 R)
• M21: 8,688,944 km (0.088 R)
• M22: 8,887,460 km (0.093 R)
• M23: 9,696,635 km (0.12 R)
• M24: 10,371,471 km (0.101 R)
• M25: 10,794,234 km (0.054 R)
• M26: 11,061,416 km (0.028 R)
• M27: 11,876,126 km (0.081 R)
• M28: 12,710,284 km (0.084 R)
• M29: 12,822,931 km (0.081 R)
• M30: 13,505,995 km (0.117 R)
• M31: 13,620,886 km (0.106 R)
• M32: 14,611,523 km (0.041 R)
• M33: 14,729,556 km (0.107 R)
• M34: 15,806,511 km (0.066 R)
• M35: 15,927,835 km (0.08 R)
• M36: 16,538,643 km (0.113 R)
• M37: 16,785,180 km (0.11 R)
• M38: 17,783,447 km (0.085 R)
• M39: 18,162,827 km (0.119 R)
• M40: 18,417,143 km (0.082 R)
• M41: 18,736,834 km (0.119 R)
• M42: 19,837,276 km (0.091 R)
• M43: 19,968,174 km (0.087 R)
• M44: 20,099,372 km (0.044 R)
• M45: 20,494,459 km (0.091 R)
• M46: 20,958,811 km (0.096 R)
• M47: 22,713,744 km (0.111 R)
• M48: 24,025,717 km (0.083 R)
• M49: 24,445,190 km (0.118 R)
• M50: 24,585,512 km (0.096 R)
• M51: 24,867,056 km (0.107 R)
• M52: 26,147,165 km (0.075 R)
• M53: 26,795,223 km (0.116 R)
• M54: 26,940,033 km (0.094 R)
• M55: 27,521,670 km (0.086 R)
• M56: 29,142,264 km (0.088 R)
• M57: 30,189,748 km (0.113 R)
• M58: 30,566,735 km (0.119 R)
• M59: 31,249,499 km (0.107 R)
• M60: 31,784,012 km (0.077 R)
• M61: 32,321,368 km (0.091 R)
• M62: 32,707,181 km (0.1 R)
• M63: 32,862,015 km (0.109 R)
• M64: 33,561,235 km (0.06 R)
• M65: 33,951,985 km (0.066 R)
• M66: 38,266,088 km (0.096 R)
• M67: 38,510,830 km (0.028 R)
• M68: 39,001,810 km (0.075 R)
• M69: 40,238,386 km (0.091 R)
• M70: 40,736,547 km (0.09 R)
• M71: 40,903,199 km (0.1 R)
• M72: 41,153,327 km (0.077 R)
• M73: 41,571,453 km (0.107 R)
• M74: 42,075,149 km (0.111 R)
• M75: 42,412,044 km (0.103 R)
• M76: 43,343,141 km (0.094 R)
• M77: 45,830,205 km (0.067 R)
• M78: 46,785,537 km (0.109 R)
• M79: 47,484,608 km (0.091 R)
• M80: 49,780,038 km (0.104 R)
• M81: 52,021,164 km (0.055 R)
• M82: 52,654,561 km (0.112 R)
• M83: 52,926,829 km (0.04 R)
• M84: 53,199,546 km (0.079 R)
• M85: 55,490,338 km (0.051 R)
• M86: 56,601,402 km (0.075 R)
• M87: 59,505,246 km (0.075 R)
• M88: 61,118,210 km (0.07 R)
• M89: 61,213,654 km (0.085 R)
• M90: 61,691,020 km (0.079 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 695.4

Radius: 5.7

Gravity: 21.4 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 14.94 AU - 22.22 AU

Year: 29701 Days

Day: 18.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 99,539,806 km

• M1: 253,568 km (0.057 R)
• M2: 331,359 km (0.114 R)
• M3: 667,207 km (0.068 R)
• M4: 778,807 km (0.093 R)
• M5: 957,875 km (0.089 R)
• M6: 1,353,861 km (0.043 R)
• M7: 2,449,366 km (0.12 R)
• M8: 2,801,370 km (0.087 R)
• M9: 3,263,627 km (0.115 R)
• M10: 3,849,303 km (0.044 R)
• M11: 4,309,466 km (0.097 R)
• M12: 4,572,758 km (0.077 R)
• M13: 7,166,336 km (0.051 R)
• M14: 7,352,735 km (0.088 R)
• M15: 7,921,656 km (0.119 R)
• M16: 7,985,834 km (0.087 R)
• M17: 9,506,795 km (0.074 R)
• M18: 10,686,823 km (0.063 R)
• M19: 10,971,209 km (0.118 R)
• M20: 11,547,460 km (0.117 R)
• M21: 12,579,236 km (0.044 R)
• M22: 13,257,962 km (0.11 R)
• M23: 14,966,519 km (0.051 R)
• M24: 15,846,603 km (0.112 R)
• M25: 16,825,572 km (0.104 R)
• M26: 17,073,455 km (0.099 R)
• M27: 17,322,386 km (0.056 R)
• M28: 19,099,011 km (0.099 R)
• M29: 19,271,198 km (0.098 R)
• M30: 19,965,033 km (0.08 R)
• M31: 20,490,869 km (0.102 R)
• M32: 21,556,156 km (0.071 R)
• M33: 22,185,813 km (0.099 R)
• M34: 22,639,394 km (0.092 R)
• M35: 22,730,349 km (0.093 R)
• M36: 23,004,263 km (0.08 R)
• M37: 24,764,432 km (0.117 R)
• M38: 25,046,274 km (0.103 R)
• M39: 25,708,095 km (0.068 R)
• M40: 26,952,300 km (0.062 R)
• M41: 28,020,280 km (0.053 R)
• M42: 28,118,117 km (0.099 R)
• M43: 28,608,798 km (0.119 R)
• M44: 28,707,233 km (0.035 R)
• M45: 28,805,818 km (0.088 R)
• M46: 30,599,347 km (0.078 R)
• M47: 34,188,798 km (0.111 R)
• M48: 36,832,791 km (0.104 R)
• M49: 38,559,300 km (0.071 R)
• M50: 39,871,273 km (0.057 R)
• M51: 39,981,228 km (0.108 R)
• M52: 40,201,585 km (0.075 R)
• M53: 44,349,186 km (0.094 R)
• M54: 44,805,609 km (0.097 R)
• M55: 45,148,937 km (0.094 R)
• M56: 45,493,161 km (0.084 R)
• M57: 46,299,793 km (0.119 R)
• M58: 46,878,886 km (0.064 R)
• M59: 49,219,046 km (0.057 R)
• M60: 52,558,519 km (0.098 R)
• M61: 55,110,808 km (0.052 R)
• M62: 55,233,329 km (0.116 R)
• M63: 55,847,279 km (0.117 R)
• M64: 58,701,008 km (0.101 R)
• M65: 59,704,660 km (0.079 R)
• M66: 60,840,407 km (0.051 R)
• M67: 62,366,006 km (0.104 R)
• M68: 63,133,443 km (0.085 R)
• M69: 63,518,358 km (0.112 R)
• M70: 64,290,583 km (0.097 R)
• M71: 65,454,604 km (0.07 R)
• M72: 67,017,602 km (0.047 R)
• M73: 67,934,936 km (0.063 R)
• M74: 68,856,459 km (0.064 R)
• M75: 68,988,404 km (0.084 R)
• M76: 69,517,233 km (0.041 R)
• M77: 70,711,922 km (0.116 R)
• M78: 72,047,232 km (0.092 R)
• M79: 72,718,029 km (0.043 R)
• M80: 74,336,379 km (0.03 R)
• M81: 74,471,765 km (0.12 R)
• M82: 77,196,989 km (0.056 R)
• M83: 81,345,488 km (0.073 R)
• M84: 82,463,881 km (0.084 R)
• M85: 83,306,117 km (0.119 R)
• M86: 84,433,337 km (0.117 R)
• M87: 86,276,084 km (0.089 R)
• M88: 86,703,186 km (0.08 R)
• M89: 86,988,319 km (0.113 R)
• M90: 89,280,608 km (0.111 R)
• M91: 90,723,329 km (0.091 R)
• M92: 92,028,272 km (0.081 R)
• M93: 92,756,065 km (0.068 R)
• M94: 93,924,275 km (0.11 R)
• M95: 94,950,517 km (0.039 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 378 - 20,285 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit