🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.7

Radius: 13.7

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.47 AU - 0.67 AU

Year: 292 Days

Day: 11.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 98.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 63,167,503 km

• M1: 171,140 km (0.108 R)
• M2: 274,662 km (0.094 R)
• M3: 407,355 km (0.097 R)
• M4: 532,269 km (0.095 R)
• M5: 618,138 km (0.096 R)
• M6: 728,392 km (0.107 R)
• M7: 823,835 km (0.081 R)
• M8: 909,705 km (0.118 R)
• M9: 1,063,342 km (0.063 R)
• M10: 1,190,500 km (0.118 R)
• M11: 1,440,179 km (0.082 R)
• M12: 1,578,856 km (0.046 R)
• M13: 1,696,141 km (0.114 R)
• M14: 1,782,459 km (0.119 R)
• M15: 1,870,273 km (0.096 R)
• M16: 2,074,474 km (0.108 R)
• M17: 2,171,263 km (0.101 R)
• M18: 2,257,282 km (0.034 R)
• M19: 2,352,726 km (0.074 R)
• M20: 2,449,815 km (0.052 R)
• M21: 2,552,439 km (0.071 R)
• M22: 2,652,221 km (0.118 R)
• M23: 2,869,437 km (0.072 R)
• M24: 3,124,950 km (0.096 R)
• M25: 3,246,124 km (0.094 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 360

Radius: 14.3

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.93 AU - 1.09 AU

Year: 688 Days

Day: 5.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 63,167,503 km

• M1: 190,588 km (0.116 R)
• M2: 297,401 km (0.064 R)
• M3: 395,986 km (0.079 R)
• M4: 505,342 km (0.044 R)
• M5: 624,721 km (0.1 R)
• M6: 794,664 km (0.072 R)
• M7: 893,249 km (0.078 R)
• M8: 1,069,475 km (0.05 R)
• M9: 1,159,683 km (0.087 R)
• M10: 1,273,975 km (0.056 R)
• M11: 1,447,359 km (0.117 R)
• M12: 1,594,414 km (0.112 R)
• M13: 1,867,430 km (0.114 R)
• M14: 1,972,298 km (0.079 R)
• M15: 2,072,828 km (0.119 R)
• M16: 2,253,243 km (0.119 R)
• M17: 2,445,776 km (0.088 R)
• M18: 2,755,593 km (0.032 R)
• M19: 2,904,592 km (0.105 R)
• M20: 3,027,263 km (0.106 R)
• M21: 3,122,407 km (0.119 R)
• M22: 3,489,670 km (0.102 R)
• M23: 3,605,009 km (0.105 R)
• M24: 3,760,741 km (0.111 R)
• M25: 3,879,073 km (0.097 R)
• M26: 3,974,666 km (0.069 R)
• M27: 4,200,858 km (0.119 R)
• M28: 4,389,800 km (0.12 R)
• M29: 4,683,012 km (0.092 R)
• M30: 4,784,888 km (0.061 R)
• M31: 4,982,507 km (0.107 R)
• M32: 5,147,812 km (0.057 R)
• M33: 5,306,236 km (0.112 R)
• M34: 5,448,354 km (0.07 R)
• M35: 5,636,848 km (0.076 R)
• M36: 5,864,087 km (0.061 R)
• M37: 6,224,767 km (0.038 R)
• M38: 6,393,663 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.8

Radius: 8.4

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.93 AU - 1.51 AU

Year: 914 Days

Day: 10.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 130.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 63,167,503 km

• M1: 121,025 km (0.105 R)
• M2: 182,958 km (0.088 R)
• M3: 276,457 km (0.085 R)
• M4: 395,537 km (0.105 R)
• M5: 520,900 km (0.098 R)
• M6: 623,075 km (0.072 R)
• M7: 712,834 km (0.073 R)
• M8: 822,788 km (0.064 R)
• M9: 943,963 km (0.059 R)
• M10: 1,020,706 km (0.106 R)
• M11: 1,099,694 km (0.111 R)
• M12: 1,246,001 km (0.115 R)
• M13: 1,405,173 km (0.061 R)
• M14: 1,481,019 km (0.043 R)
• M15: 1,564,644 km (0.068 R)
• M16: 1,669,811 km (0.116 R)
• M17: 1,730,099 km (0.089 R)
• M18: 1,818,512 km (0.086 R)
• M19: 1,894,507 km (0.091 R)
• M20: 1,957,339 km (0.096 R)
• M21: 2,049,640 km (0.081 R)
• M22: 2,128,778 km (0.085 R)
• M23: 2,209,112 km (0.054 R)
• M24: 2,268,053 km (0.094 R)
• M25: 2,448,319 km (0.073 R)
• M26: 2,688,124 km (0.099 R)
• M27: 2,743,326 km (0.079 R)
• M28: 2,814,983 km (0.114 R)
• M29: 2,879,011 km (0.083 R)
• M30: 3,265,871 km (0.057 R)
• M31: 3,401,407 km (0.108 R)
• M32: 3,486,977 km (0.091 R)
• M33: 3,547,414 km (0.071 R)
• M34: 3,643,007 km (0.036 R)
• M35: 3,739,498 km (0.076 R)
• M36: 3,818,934 km (0.086 R)
• M37: 3,899,119 km (0.081 R)
• M38: 3,952,825 km (0.094 R)
• M39: 4,391,745 km (0.109 R)
• M40: 4,513,368 km (0.105 R)
• M41: 4,654,887 km (0.035 R)
• M42: 4,740,607 km (0.106 R)
• M43: 4,826,925 km (0.057 R)
• M44: 4,971,885 km (0.08 R)
• M45: 5,147,663 km (0.115 R)
• M46: 5,305,638 km (0.118 R)
• M47: 5,385,224 km (0.093 R)
• M48: 5,475,282 km (0.087 R)
• M49: 5,727,953 km (0.114 R)
• M50: 5,984,663 km (0.108 R)
• M51: 6,088,334 km (0.079 R)
• M52: 6,266,056 km (0.073 R)
• M53: 6,487,910 km (0.062 R)
• M54: 6,841,709 km (0.115 R)
• M55: 7,037,533 km (0.05 R)
• M56: 7,478,996 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.2

Radius: 11.2

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.48 AU - 3.04 AU

Year: 3110 Days

Day: 11.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 63,167,503 km

• M1: 143,614 km (0.099 R)
• M2: 247,285 km (0.079 R)
• M3: 337,792 km (0.086 R)
• M4: 493,224 km (0.089 R)
• M5: 604,525 km (0.111 R)
• M6: 684,261 km (0.091 R)
• M7: 837,898 km (0.109 R)
• M8: 937,679 km (0.075 R)
• M9: 1,013,226 km (0.11 R)
• M10: 1,477,429 km (0.116 R)
• M11: 1,797,718 km (0.086 R)
• M12: 1,917,546 km (0.097 R)
• M13: 1,990,848 km (0.057 R)
• M14: 2,178,145 km (0.096 R)
• M15: 2,293,485 km (0.067 R)
• M16: 2,437,249 km (0.098 R)
• M17: 2,570,540 km (0.098 R)
• M18: 2,747,514 km (0.051 R)
• M19: 2,956,952 km (0.119 R)
• M20: 3,200,497 km (0.11 R)
• M21: 3,302,822 km (0.095 R)
• M22: 3,892,836 km (0.116 R)
• M23: 4,144,310 km (0.072 R)
• M24: 4,256,059 km (0.049 R)
• M25: 4,352,700 km (0.111 R)
• M26: 4,433,782 km (0.079 R)
• M27: 4,680,169 km (0.044 R)
• M28: 4,930,895 km (0.098 R)
• M29: 5,169,055 km (0.101 R)
• M30: 5,463,464 km (0.098 R)
• M31: 5,603,787 km (0.056 R)
• M32: 6,068,438 km (0.072 R)
• M33: 6,268,899 km (0.069 R)
• M34: 6,434,354 km (0.112 R)
• M35: 6,920,996 km (0.103 R)
• M36: 7,034,840 km (0.108 R)
• M37: 7,207,027 km (0.114 R)
• M38: 7,438,754 km (0.109 R)
• M39: 7,516,545 km (0.104 R)
• M40: 7,830,401 km (0.107 R)
• M41: 8,128,700 km (0.085 R)
• M42: 8,208,884 km (0.114 R)
• M43: 8,289,218 km (0.118 R)
• M44: 8,430,588 km (0.104 R)
• M45: 8,634,041 km (0.099 R)
• M46: 8,756,861 km (0.082 R)
• M47: 9,045,734 km (0.097 R)
• M48: 9,295,712 km (0.102 R)
• M49: 9,717,728 km (0.099 R)
• M50: 9,931,055 km (0.073 R)
• M51: 10,167,419 km (0.103 R)
• M52: 10,405,729 km (0.089 R)
• M53: 10,580,309 km (0.102 R)
• M54: 10,777,779 km (0.028 R)
• M55: 10,865,892 km (0.051 R)
• M56: 11,265,617 km (0.081 R)
• M57: 11,489,864 km (0.042 R)
• M58: 12,912,391 km (0.035 R)
• M59: 13,053,013 km (0.104 R)
• M60: 13,194,233 km (0.116 R)
• M61: 13,573,015 km (0.098 R)
• M62: 13,668,309 km (0.104 R)
• M63: 13,739,966 km (0.115 R)
• M64: 14,414,353 km (0.109 R)
• M65: 14,657,749 km (0.111 R)
• M66: 14,902,491 km (0.093 R)
• M67: 15,124,046 km (0.063 R)
• M68: 15,371,480 km (0.109 R)
• M69: 15,595,279 km (0.112 R)
• M70: 16,298,538 km (0.063 R)
• M71: 16,450,530 km (0.07 R)
• M72: 16,730,577 km (0.093 R)
• M73: 16,935,227 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.1

Radius: 11.3

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.54 AU - 3.9 AU

Year: 3919 Days

Day: 11.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 63,167,503 km

• M1: 149,747 km (0.099 R)
• M2: 285,433 km (0.095 R)
• M3: 359,932 km (0.099 R)
• M4: 463,155 km (0.115 R)
• M5: 761,004 km (0.054 R)
• M6: 919,429 km (0.104 R)
• M7: 1,126,771 km (0.084 R)
• M8: 1,329,775 km (0.103 R)
• M9: 1,410,409 km (0.108 R)
• M10: 1,482,365 km (0.063 R)
• M11: 1,673,402 km (0.086 R)
• M12: 2,115,314 km (0.101 R)
• M13: 2,198,490 km (0.105 R)
• M14: 2,343,750 km (0.12 R)
• M15: 2,517,283 km (0.04 R)
• M16: 2,605,696 km (0.083 R)
• M17: 2,721,036 km (0.12 R)
• M18: 2,838,021 km (0.118 R)
• M19: 3,050,151 km (0.107 R)
• M20: 3,226,527 km (0.094 R)
• M21: 3,448,231 km (0.092 R)
• M22: 3,589,302 km (0.058 R)
• M23: 3,675,021 km (0.102 R)
• M24: 4,053,953 km (0.034 R)
• M25: 4,354,196 km (0.066 R)
• M26: 4,461,009 km (0.056 R)
• M27: 4,630,503 km (0.116 R)
• M28: 4,724,002 km (0.11 R)
• M29: 5,152,300 km (0.055 R)
• M30: 5,412,002 km (0.093 R)
• M31: 5,793,028 km (0.092 R)
• M32: 5,893,857 km (0.093 R)
• M33: 6,320,360 km (0.081 R)
• M34: 6,459,038 km (0.09 R)
• M35: 6,686,426 km (0.085 R)
• M36: 6,934,310 km (0.062 R)
• M37: 7,329,996 km (0.111 R)
• M38: 7,420,952 km (0.104 R)
• M39: 7,974,614 km (0.104 R)
• M40: 8,124,660 km (0.11 R)
• M41: 8,446,296 km (0.059 R)
• M42: 8,541,739 km (0.103 R)
• M43: 8,868,910 km (0.03 R)
• M44: 9,318,152 km (0.053 R)
• M45: 9,515,771 km (0.075 R)
• M46: 9,615,254 km (0.071 R)
• M47: 10,036,222 km (0.116 R)
• M48: 11,230,312 km (0.109 R)
• M49: 11,951,224 km (0.091 R)
• M50: 12,230,823 km (0.109 R)
• M51: 12,360,524 km (0.097 R)
• M52: 12,490,824 km (0.07 R)
• M53: 12,818,294 km (0.054 R)
• M54: 13,060,343 km (0.025 R)
• M55: 13,193,036 km (0.088 R)
• M56: 13,303,888 km (0.114 R)
• M57: 13,818,056 km (0.085 R)
• M58: 13,930,703 km (0.12 R)
• M59: 14,021,060 km (0.117 R)
• M60: 14,498,427 km (0.044 R)
• M61: 14,681,834 km (0.111 R)
• M62: 15,213,056 km (0.109 R)
• M63: 15,422,643 km (0.026 R)
• M64: 15,562,966 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.7

Radius: 10.8

Gravity: 7.57 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.04 AU - 4.08 AU

Year: 4556 Days

Day: 13.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 63,167,503 km

• M1: 202,406 km (0.062 R)
• M2: 278,402 km (0.058 R)
• M3: 418,126 km (0.111 R)
• M4: 778,507 km (0.111 R)
• M5: 978,370 km (0.089 R)
• M6: 1,063,192 km (0.035 R)
• M7: 1,240,914 km (0.095 R)
• M8: 1,460,674 km (0.105 R)
• M9: 2,232,748 km (0.068 R)
• M10: 2,327,743 km (0.069 R)
• M11: 2,541,518 km (0.106 R)
• M12: 2,863,902 km (0.071 R)
• M13: 3,156,964 km (0.027 R)
• M14: 3,264,076 km (0.062 R)
• M15: 3,526,022 km (0.074 R)
• M16: 3,637,173 km (0.029 R)
• M17: 3,749,521 km (0.063 R)
• M18: 4,000,995 km (0.036 R)
• M19: 4,140,420 km (0.089 R)
• M20: 4,257,855 km (0.117 R)
• M21: 4,424,207 km (0.087 R)
• M22: 4,544,484 km (0.108 R)
• M23: 4,986,097 km (0.036 R)
• M24: 5,518,815 km (0.098 R)
• M25: 6,149,819 km (0.093 R)
• M26: 6,446,771 km (0.027 R)
• M27: 6,528,451 km (0.053 R)
• M28: 7,082,711 km (0.07 R)
• M29: 7,451,171 km (0.095 R)
• M30: 7,652,081 km (0.098 R)
• M31: 7,883,957 km (0.071 R)
• M32: 8,118,228 km (0.103 R)
• M33: 8,206,640 km (0.077 R)
• M34: 8,354,742 km (0.101 R)
• M35: 8,834,801 km (0.059 R)
• M36: 8,925,757 km (0.069 R)
• M37: 9,231,385 km (0.088 R)
• M38: 9,633,804 km (0.108 R)
• M39: 10,105,336 km (0.103 R)
• M40: 10,778,078 km (0.12 R)
• M41: 10,875,466 km (0.108 R)
• M42: 11,201,889 km (0.119 R)
• M43: 12,166,795 km (0.118 R)
• M44: 12,882,172 km (0.111 R)
• M45: 13,681,324 km (0.114 R)
• M46: 14,175,595 km (0.113 R)
• M47: 14,928,072 km (0.059 R)
• M48: 15,400,353 km (0.104 R)
• M49: 16,247,974 km (0.101 R)
• M50: 16,658,770 km (0.111 R)
• M51: 17,376,391 km (0.064 R)
• M52: 17,643,274 km (0.043 R)
• M53: 18,142,631 km (0.061 R)
• M54: 18,763,612 km (0.106 R)
• M55: 20,667,993 km (0.08 R)
• M56: 21,113,047 km (0.114 R)
• M57: 21,194,278 km (0.068 R)
• M58: 21,275,660 km (0.082 R)
• M59: 21,397,881 km (0.115 R)
• M60: 21,684,062 km (0.102 R)
• M61: 22,260,163 km (0.111 R)
• M62: 22,841,201 km (0.115 R)
• M63: 23,259,477 km (0.088 R)
• M64: 23,511,549 km (0.116 R)
• M65: 23,806,856 km (0.118 R)
• M66: 24,060,873 km (0.118 R)
• M67: 24,145,844 km (0.097 R)
• M68: 24,785,674 km (0.108 R)
• M69: 24,914,329 km (0.086 R)
• M70: 25,951,640 km (0.047 R)
• M71: 26,563,196 km (0.102 R)
• M72: 27,179,540 km (0.078 R)
• M73: 27,445,076 km (0.093 R)
• M74: 27,711,510 km (0.038 R)
• M75: 29,646,109 km (0.09 R)
• M76: 30,882,984 km (0.043 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 940.2

Radius: 3.1

Gravity: 97.84 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 5.48 AU - 8.78 AU

Year: 12913 Days

Day: 19.9 Hours

Environment

Temp: -239 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 63,167,503 km

• M1: 121,473 km (0.1 R)
• M2: 166,353 km (0.063 R)
• M3: 416,929 km (0.106 R)
• M4: 989,590 km (0.041 R)
• M5: 1,013,077 km (0.092 R)
• M6: 1,084,734 km (0.081 R)
• M7: 1,158,037 km (0.096 R)
• M8: 1,440,328 km (0.111 R)
• M9: 1,466,957 km (0.1 R)
• M10: 1,742,965 km (0.1 R)
• M11: 1,887,028 km (0.052 R)
• M12: 2,034,830 km (0.092 R)
• M13: 2,095,118 km (0.093 R)
• M14: 2,828,447 km (0.114 R)
• M15: 4,699,767 km (0.046 R)
• M16: 6,288,047 km (0.108 R)
• M17: 6,419,993 km (0.116 R)
• M18: 6,464,124 km (0.101 R)
• M19: 6,508,405 km (0.082 R)
• M20: 6,731,306 km (0.083 R)
• M21: 7,093,033 km (0.081 R)
• M22: 7,138,661 km (0.086 R)
• M23: 7,368,443 km (0.056 R)
• M24: 7,553,944 km (0.115 R)
• M25: 7,600,619 km (0.105 R)
• M26: 10,829,390 km (0.083 R)
• M27: 10,934,707 km (0.114 R)
• M28: 11,789,060 km (0.108 R)
• M29: 11,951,523 km (0.09 R)
• M30: 14,768,003 km (0.102 R)
• M31: 14,943,331 km (0.046 R)
• M32: 15,591,688 km (0.076 R)
• M33: 16,430,035 km (0.095 R)
• M34: 17,160,372 km (0.116 R)
• M35: 17,406,161 km (0.036 R)
• M36: 18,212,942 km (0.063 R)
• M37: 18,841,702 km (0.095 R)
• M38: 19,669,726 km (0.088 R)
• M39: 19,862,558 km (0.115 R)
• M40: 21,691,841 km (0.096 R)
• M41: 22,693,698 km (0.115 R)
• M42: 23,505,865 km (0.088 R)
• M43: 24,603,763 km (0.086 R)
• M44: 25,368,059 km (0.07 R)
• M45: 25,858,590 km (0.083 R)
• M46: 26,422,874 km (0.086 R)
• M47: 26,848,779 km (0.073 R)
• M48: 26,991,345 km (0.03 R)
• M49: 27,062,704 km (0.111 R)
• M50: 27,205,570 km (0.092 R)
• M51: 27,707,470 km (0.105 R)
• M52: 28,939,259 km (0.113 R)
• M53: 29,966,997 km (0.104 R)
• M54: 30,040,898 km (0.117 R)
• M55: 30,782,903 km (0.105 R)
• M56: 31,455,795 km (0.096 R)
• M57: 31,605,991 km (0.106 R)
• M58: 32,436,409 km (0.103 R)
• M59: 34,118,487 km (0.052 R)
• M60: 34,659,583 km (0.115 R)
• M61: 35,907,229 km (0.1 R)
• M62: 36,064,157 km (0.085 R)
• M63: 36,221,384 km (0.091 R)
• M64: 36,457,599 km (0.111 R)
• M65: 37,566,718 km (0.107 R)
• M66: 39,331,973 km (0.041 R)
• M67: 40,061,861 km (0.106 R)
• M68: 40,387,685 km (0.081 R)
• M69: 40,960,047 km (0.113 R)
• M70: 42,112,698 km (0.039 R)
• M71: 42,444,057 km (0.095 R)
• M72: 43,945,422 km (0.065 R)
• M73: 44,281,568 km (0.104 R)
• M74: 45,719,054 km (0.07 R)
• M75: 46,486,342 km (0.051 R)
• M76: 47,171,949 km (0.111 R)
• M77: 47,343,837 km (0.108 R)
• M78: 48,466,269 km (0.079 R)
• M79: 49,685,043 km (0.081 R)
• M80: 51,090,066 km (0.115 R)
• M81: 52,330,083 km (0.1 R)
• M82: 52,775,436 km (0.092 R)
• M83: 52,953,906 km (0.105 R)
• M84: 53,043,216 km (0.113 R)
• M85: 54,478,907 km (0.118 R)
• M86: 55,111,108 km (0.076 R)
• M87: 55,382,777 km (0.044 R)
• M88: 55,836,508 km (0.085 R)
• M89: 57,113,625 km (0.09 R)
• M90: 59,232,379 km (0.054 R)
• M91: 61,002,122 km (0.066 R)
• M92: 61,376,865 km (0.086 R)
• M93: 62,222,990 km (0.042 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: 287 - 17,518 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit