🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.77

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.83 AU - 0.95 AU

Year: 311 Days

Day: 22.4 Hours

Environment

Temp: 78 °C

Axial Tilt: 21.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.01 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.4

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.98 AU - 1.04 AU

Year: 376 Days

Day: 22 Hours

Environment

Temp: 12 °C

Axial Tilt: 11.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.14 AU - 1.18 AU

Year: 463 Days

Day: 20.8 Hours

Environment

Temp: -4 °C

Axial Tilt: 44.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.28

Radius: 1.39

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.43 AU - 2.37 AU

Year: 971 Days

Day: 30.7 Hours

Environment

Temp: -75 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760

Radius: 14.4

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 6.44 AU - 8.12 AU

Year: 7285 Days

Day: 10.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 68,510,490 km

• M1: 260,001 km (0.113 R)
• M2: 752,178 km (0.107 R)
• M3: 841,937 km (0.086 R)
• M4: 1,135,448 km (0.074 R)
• M5: 1,368,671 km (0.089 R)
• M6: 1,462,768 km (0.088 R)
• M7: 2,140,895 km (0.079 R)
• M8: 2,319,216 km (0.112 R)
• M9: 2,433,209 km (0.091 R)
• M10: 2,525,810 km (0.117 R)
• M11: 3,007,216 km (0.113 R)
• M12: 3,361,464 km (0.089 R)
• M13: 4,764,393 km (0.069 R)
• M14: 4,881,528 km (0.062 R)
• M15: 5,208,399 km (0.11 R)
• M16: 5,329,125 km (0.07 R)
• M17: 6,816,726 km (0.108 R)
• M18: 6,948,971 km (0.115 R)
• M19: 7,692,023 km (0.111 R)
• M20: 7,864,510 km (0.112 R)
• M21: 8,178,216 km (0.067 R)
• M22: 8,283,683 km (0.117 R)
• M23: 8,710,186 km (0.034 R)
• M24: 9,034,814 km (0.057 R)
• M25: 9,143,871 km (0.061 R)
• M26: 11,732,811 km (0.079 R)
• M27: 11,891,834 km (0.047 R)
• M28: 12,292,457 km (0.11 R)
• M29: 12,535,105 km (0.053 R)
• M30: 13,107,167 km (0.09 R)
• M31: 13,437,928 km (0.084 R)
• M32: 13,562,693 km (0.114 R)
• M33: 13,897,193 km (0.083 R)
• M34: 14,574,573 km (0.073 R)
• M35: 14,745,713 km (0.078 R)
• M36: 15,176,106 km (0.093 R)
• M37: 15,829,699 km (0.041 R)
• M38: 16,894,536 km (0.079 R)
• M39: 17,390,453 km (0.065 R)
• M40: 18,074,265 km (0.067 R)
• M41: 18,813,428 km (0.074 R)
• M42: 18,906,478 km (0.071 R)
• M43: 18,999,678 km (0.044 R)
• M44: 19,468,368 km (0.052 R)
• M45: 20,130,637 km (0.098 R)
• M46: 20,321,375 km (0.051 R)
• M47: 21,138,179 km (0.082 R)
• M48: 21,331,908 km (0.039 R)
• M49: 23,602,355 km (0.085 R)
• M50: 23,803,415 km (0.087 R)
• M51: 24,562,474 km (0.111 R)
• M52: 25,021,740 km (0.083 R)
• M53: 25,793,515 km (0.111 R)
• M54: 26,052,469 km (0.073 R)
• M55: 26,364,530 km (0.063 R)
• M56: 27,677,551 km (0.069 R)
• M57: 29,173,380 km (0.094 R)
• M58: 29,876,789 km (0.094 R)
• M59: 32,020,377 km (0.12 R)
• M60: 32,689,977 km (0.032 R)
• M61: 33,138,920 km (0.066 R)
• M62: 33,816,150 km (0.069 R)
• M63: 33,929,545 km (0.084 R)
• M64: 34,099,638 km (0.1 R)
• M65: 34,783,450 km (0.118 R)
• M66: 34,955,038 km (0.086 R)
• M67: 35,529,195 km (0.093 R)
• M68: 35,644,385 km (0.067 R)
• M69: 36,106,493 km (0.117 R)
• M70: 37,211,872 km (0.063 R)
• M71: 37,504,635 km (0.059 R)
• M72: 38,446,653 km (0.093 R)
• M73: 38,801,948 km (0.106 R)
• M74: 39,575,369 km (0.109 R)
• M75: 39,814,277 km (0.054 R)
• M76: 39,933,955 km (0.107 R)
• M77: 40,173,760 km (0.078 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 453

Radius: 14.5

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 6.43 AU - 9.01 AU

Year: 7955 Days

Day: 6 Hours

Environment

Temp: -170 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 68,510,490 km

• M1: 312,959 km (0.039 R)
• M2: 498,460 km (0.082 R)
• M3: 704,606 km (0.068 R)
• M4: 799,002 km (0.115 R)
• M5: 942,467 km (0.077 R)
• M6: 1,064,389 km (0.101 R)
• M7: 1,411,456 km (0.101 R)
• M8: 1,700,479 km (0.11 R)
• M9: 2,069,088 km (0.086 R)
• M10: 2,315,177 km (0.106 R)
• M11: 2,527,905 km (0.07 R)
• M12: 2,904,592 km (0.077 R)
• M13: 3,323,167 km (0.056 R)
• M14: 3,686,989 km (0.116 R)
• M15: 4,453,379 km (0.118 R)
• M16: 4,585,923 km (0.105 R)
• M17: 5,101,886 km (0.112 R)
• M18: 5,837,907 km (0.065 R)
• M19: 6,277,875 km (0.059 R)
• M20: 7,097,073 km (0.1 R)
• M21: 7,917,767 km (0.08 R)
• M22: 8,046,720 km (0.092 R)
• M23: 8,208,884 km (0.089 R)
• M24: 8,536,503 km (0.056 R)
• M25: 9,786,244 km (0.08 R)
• M26: 10,098,903 km (0.108 R)
• M27: 10,769,700 km (0.067 R)
• M28: 11,748,070 km (0.078 R)
• M29: 12,378,476 km (0.078 R)
• M30: 12,641,469 km (0.053 R)
• M31: 12,982,103 km (0.119 R)
• M32: 13,096,396 km (0.082 R)
• M33: 13,249,135 km (0.109 R)
• M34: 13,711,393 km (0.088 R)
• M35: 14,889,775 km (0.034 R)
• M36: 15,531,700 km (0.108 R)
• M37: 15,815,337 km (0.061 R)
• M38: 16,059,780 km (0.085 R)
• M39: 16,428,838 km (0.111 R)
• M40: 16,635,134 km (0.118 R)
• M41: 16,925,503 km (0.074 R)
• M42: 17,975,830 km (0.065 R)
• M43: 18,745,062 km (0.059 R)
• M44: 19,264,017 km (0.094 R)
• M45: 19,525,215 km (0.089 R)
• M46: 19,831,442 km (0.111 R)
• M47: 20,271,708 km (0.092 R)
• M48: 21,476,570 km (0.072 R)
• M49: 22,292,626 km (0.119 R)
• M50: 22,796,472 km (0.07 R)
• M51: 23,582,309 km (0.119 R)
• M52: 24,236,351 km (0.088 R)
• M53: 24,801,532 km (0.097 R)
• M54: 24,943,500 km (0.039 R)
• M55: 25,085,768 km (0.028 R)
• M56: 25,466,494 km (0.119 R)
• M57: 25,562,087 km (0.087 R)
• M58: 26,281,952 km (0.049 R)
• M59: 26,378,443 km (0.088 R)
• M60: 27,398,700 km (0.112 R)
• M61: 27,545,606 km (0.106 R)
• M62: 28,332,939 km (0.08 R)
• M63: 28,431,973 km (0.102 R)
• M64: 28,531,007 km (0.058 R)
• M65: 28,779,190 km (0.096 R)
• M66: 28,878,672 km (0.028 R)
• M67: 29,779,102 km (0.068 R)
• M68: 30,232,832 km (0.115 R)
• M69: 30,384,524 km (0.1 R)
• M70: 31,198,038 km (0.038 R)
• M71: 31,658,949 km (0.083 R)
• M72: 31,813,034 km (0.072 R)
• M73: 33,106,757 km (0.039 R)
• M74: 33,263,236 km (0.071 R)
• M75: 33,472,224 km (0.1 R)
• M76: 33,576,793 km (0.082 R)
• M77: 33,996,415 km (0.119 R)
• M78: 34,840,895 km (0.068 R)
• M79: 34,946,960 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.4

Radius: 10.4

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 6.49 AU - 9.59 AU

Year: 8455 Days

Day: 8.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 68,510,490 km

• M1: 130,449 km (0.117 R)
• M2: 231,428 km (0.054 R)
• M3: 326,423 km (0.116 R)
• M4: 497,413 km (0.093 R)
• M5: 660,175 km (0.108 R)
• M6: 798,254 km (0.092 R)
• M7: 1,220,419 km (0.071 R)
• M8: 1,900,940 km (0.105 R)
• M9: 2,164,980 km (0.066 R)
• M10: 2,956,802 km (0.092 R)
• M11: 3,432,673 km (0.105 R)
• M12: 3,605,009 km (0.12 R)
• M13: 3,805,620 km (0.078 R)
• M14: 3,907,197 km (0.105 R)
• M15: 4,009,821 km (0.101 R)
• M16: 4,482,401 km (0.085 R)
• M17: 4,725,498 km (0.057 R)
• M18: 5,028,433 km (0.086 R)
• M19: 5,309,528 km (0.102 R)
• M20: 5,624,581 km (0.089 R)
• M21: 5,828,183 km (0.108 R)
• M22: 6,697,945 km (0.105 R)
• M23: 7,100,962 km (0.029 R)
• M24: 7,258,189 km (0.081 R)
• M25: 7,480,043 km (0.111 R)
• M26: 7,575,935 km (0.111 R)
• M27: 7,768,767 km (0.069 R)
• M28: 8,225,041 km (0.035 R)
• M29: 8,589,760 km (0.08 R)
• M30: 8,690,140 km (0.079 R)
• M31: 9,129,659 km (0.041 R)
• M32: 9,266,391 km (0.119 R)
• M33: 9,472,687 km (0.101 R)
• M34: 9,680,628 km (0.086 R)
• M35: 10,384,486 km (0.042 R)
• M36: 10,742,623 km (0.068 R)
• M37: 10,886,985 km (0.095 R)
• M38: 10,959,390 km (0.091 R)
• M39: 11,214,305 km (0.119 R)
• M40: 12,177,865 km (0.103 R)
• M41: 12,328,510 km (0.12 R)
• M42: 12,707,741 km (0.061 R)
• M43: 12,975,521 km (0.086 R)
• M44: 13,052,265 km (0.081 R)
• M45: 13,399,930 km (0.083 R)
• M46: 14,620,948 km (0.041 R)
• M47: 14,941,686 km (0.103 R)
• M48: 16,622,268 km (0.103 R)
• M49: 16,705,744 km (0.101 R)
• M50: 17,125,515 km (0.114 R)
• M51: 17,252,075 km (0.099 R)
• M52: 17,336,598 km (0.062 R)
• M53: 17,421,270 km (0.115 R)
• M54: 17,718,821 km (0.118 R)
• M55: 19,012,842 km (0.083 R)
• M56: 19,494,996 km (0.12 R)
• M57: 19,627,241 km (0.099 R)
• M58: 19,892,478 km (0.115 R)
• M59: 19,981,189 km (0.114 R)
• M60: 20,516,002 km (0.07 R)
• M61: 20,785,278 km (0.098 R)
• M62: 21,645,615 km (0.084 R)
• M63: 22,795,275 km (0.053 R)
• M64: 23,635,267 km (0.09 R)
• M65: 23,776,188 km (0.092 R)
• M66: 25,249,428 km (0.117 R)
• M67: 25,730,983 km (0.052 R)
• M68: 26,361,389 km (0.098 R)
• M69: 27,588,241 km (0.074 R)
• M70: 27,786,309 km (0.097 R)
• M71: 28,583,067 km (0.117 R)
• M72: 28,733,413 km (0.111 R)
• M73: 30,352,211 km (0.106 R)
• M74: 30,556,711 km (0.097 R)
• M75: 30,761,511 km (0.102 R)
• M76: 31,172,756 km (0.077 R)
• M77: 31,327,440 km (0.083 R)
• M78: 31,585,646 km (0.102 R)
• M79: 32,000,481 km (0.098 R)
• M80: 32,260,631 km (0.033 R)
• M81: 33,783,538 km (0.028 R)
• M82: 35,598,609 km (0.079 R)
• M83: 36,030,198 km (0.064 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.6

Radius: 9.8

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 8.44 AU - 13.94 AU

Year: 13882 Days

Day: 7.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 68,510,490 km

• M1: 178,919 km (0.116 R)
• M2: 254,017 km (0.056 R)
• M3: 336,296 km (0.068 R)
• M4: 443,558 km (0.049 R)
• M5: 522,695 km (0.057 R)
• M6: 607,367 km (0.114 R)
• M7: 744,249 km (0.065 R)
• M8: 808,576 km (0.095 R)
• M9: 1,620,594 km (0.108 R)
• M10: 3,355,779 km (0.032 R)
• M11: 3,438,357 km (0.088 R)
• M12: 3,521,683 km (0.089 R)
• M13: 3,633,732 km (0.074 R)
• M14: 3,775,551 km (0.103 R)
• M15: 4,064,574 km (0.106 R)
• M16: 4,943,462 km (0.112 R)
• M17: 5,291,875 km (0.083 R)
• M18: 5,420,679 km (0.054 R)
• M19: 5,780,013 km (0.106 R)
• M20: 5,945,917 km (0.117 R)
• M21: 6,282,512 km (0.057 R)
• M22: 7,186,682 km (0.084 R)
• M23: 7,365,152 km (0.095 R)
• M24: 7,545,268 km (0.089 R)
• M25: 7,763,232 km (0.028 R)
• M26: 8,093,993 km (0.081 R)
• M27: 8,205,294 km (0.096 R)
• M28: 9,580,696 km (0.06 R)
• M29: 9,816,762 km (0.118 R)
• M30: 10,334,969 km (0.083 R)
• M31: 10,577,168 km (0.078 R)
• M32: 11,026,111 km (0.055 R)
• M33: 11,149,679 km (0.11 R)
• M34: 11,398,161 km (0.069 R)
• M35: 12,410,041 km (0.086 R)
• M36: 14,025,997 km (0.094 R)
• M37: 14,564,101 km (0.1 R)
• M38: 15,614,427 km (0.119 R)
• M39: 15,707,028 km (0.06 R)
• M40: 16,078,779 km (0.102 R)
• M41: 17,932,596 km (0.047 R)
• M42: 18,126,475 km (0.072 R)
• M43: 18,761,667 km (0.066 R)
• M44: 19,007,905 km (0.057 R)
• M45: 19,205,674 km (0.097 R)
• M46: 19,503,523 km (0.082 R)
• M47: 20,104,009 km (0.115 R)
• M48: 20,507,624 km (0.076 R)
• M49: 21,016,107 km (0.114 R)
• M50: 21,169,295 km (0.075 R)
• M51: 22,461,522 km (0.1 R)
• M52: 23,249,005 km (0.049 R)
• M53: 23,938,801 km (0.107 R)
• M54: 24,581,473 km (0.078 R)
• M55: 25,175,676 km (0.115 R)
• M56: 25,829,120 km (0.104 R)
• M57: 26,103,183 km (0.116 R)
• M58: 26,268,040 km (0.104 R)
• M59: 27,487,412 km (0.105 R)
• M60: 28,047,806 km (0.043 R)
• M61: 28,329,349 km (0.083 R)
• M62: 29,009,121 km (0.071 R)
• M63: 30,442,269 km (0.098 R)
• M64: 31,254,885 km (0.073 R)
• M65: 31,488,407 km (0.115 R)
• M66: 35,059,757 km (0.097 R)
• M67: 36,769,810 km (0.048 R)
• M68: 39,322,548 km (0.091 R)
• M69: 39,700,881 km (0.115 R)
• M70: 39,890,422 km (0.117 R)
• M71: 43,224,809 km (0.043 R)
• M72: 43,289,884 km (0.069 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 459.7

Radius: 6.5

Gravity: 10.88 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 13.18 AU - 16.18 AU

Year: 20859 Days

Day: 18.1 Hours

Environment

Temp: -187 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 68,510,490 km

• M1: 319,541 km (0.077 R)
• M2: 778,059 km (0.059 R)
• M3: 1,111,811 km (0.103 R)
• M4: 1,214,884 km (0.117 R)
• M5: 1,294,171 km (0.117 R)
• M6: 1,486,404 km (0.1 R)
• M7: 1,600,248 km (0.103 R)
• M8: 1,990,400 km (0.106 R)
• M9: 2,309,941 km (0.084 R)
• M10: 2,960,991 km (0.098 R)
• M11: 3,627,000 km (0.052 R)
• M12: 4,419,271 km (0.088 R)
• M13: 4,877,190 km (0.108 R)
• M14: 5,176,535 km (0.115 R)
• M15: 5,219,769 km (0.08 R)
• M16: 5,394,050 km (0.099 R)
• M17: 5,570,127 km (0.11 R)
• M18: 5,658,839 km (0.11 R)
• M19: 5,792,878 km (0.059 R)
• M20: 5,927,965 km (0.09 R)
• M21: 6,109,727 km (0.083 R)
• M22: 6,666,081 km (0.119 R)
• M23: 6,760,328 km (0.091 R)
• M24: 8,026,075 km (0.087 R)
• M25: 8,227,284 km (0.077 R)
• M26: 8,789,025 km (0.067 R)
• M27: 9,734,633 km (0.117 R)
• M28: 10,273,933 km (0.055 R)
• M29: 10,437,593 km (0.085 R)
• M30: 10,767,456 km (0.116 R)
• M31: 11,777,691 km (0.086 R)
• M32: 12,759,352 km (0.113 R)
• M33: 14,007,896 km (0.08 R)
• M34: 14,616,011 km (0.066 R)
• M35: 15,544,266 km (0.099 R)
• M36: 15,983,934 km (0.081 R)
• M37: 16,491,520 km (0.117 R)
• M38: 19,510,704 km (0.079 R)
• M39: 19,916,862 km (0.105 R)
• M40: 20,944,599 km (0.106 R)
• M41: 22,837,312 km (0.108 R)
• M42: 24,857,332 km (0.083 R)
• M43: 25,518,704 km (0.117 R)
• M44: 26,260,261 km (0.062 R)
• M45: 26,783,554 km (0.099 R)
• M46: 27,159,493 km (0.081 R)
• M47: 27,461,532 km (0.117 R)
• M48: 27,916,608 km (0.068 R)
• M49: 29,683,957 km (0.089 R)
• M50: 30,385,422 km (0.056 R)
• M51: 32,122,852 km (0.095 R)
• M52: 32,522,278 km (0.081 R)
• M53: 33,084,167 km (0.056 R)
• M54: 34,461,964 km (0.089 R)
• M55: 34,625,325 km (0.093 R)
• M56: 34,707,005 km (0.026 R)
• M57: 34,952,645 km (0.114 R)
• M58: 35,281,162 km (0.109 R)
• M59: 35,528,148 km (0.06 R)
• M60: 35,693,154 km (0.113 R)
• M61: 36,355,723 km (0.118 R)
• M62: 38,621,682 km (0.041 R)
• M63: 39,643,286 km (0.045 R)
• M64: 39,985,865 km (0.072 R)
• M65: 41,192,372 km (0.115 R)
• M66: 42,410,996 km (0.11 R)
• M67: 43,024,647 km (0.07 R)
• M68: 43,200,424 km (0.12 R)
• M69: 44,705,080 km (0.066 R)
• M70: 44,794,090 km (0.038 R)
• M71: 45,508,570 km (0.117 R)
• M72: 47,311,224 km (0.074 R)
• M73: 50,058,439 km (0.06 R)
• M74: 50,614,046 km (0.116 R)
• M75: 50,892,747 km (0.107 R)
• M76: 51,544,694 km (0.078 R)
• M77: 52,012,188 km (0.117 R)
• M78: 52,481,027 km (0.052 R)
• M79: 52,574,975 km (0.1 R)
• M80: 53,895,924 km (0.051 R)
• M81: 54,465,294 km (0.09 R)
• M82: 55,514,573 km (0.03 R)
• M83: 57,052,589 km (0.1 R)
• M84: 57,439,299 km (0.101 R)
• M85: 57,826,758 km (0.082 R)
• M86: 59,777,514 km (0.083 R)
• M87: 60,072,072 km (0.091 R)
• M88: 61,155,909 km (0.088 R)
• M89: 61,848,996 km (0.108 R)
• M90: 65,151,369 km (0.117 R)
• M91: 65,353,326 km (0.104 R)
• M92: 67,690,942 km (0.073 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 245 - 12,032 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit