🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.74

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.52 AU - 0.56 AU

Year: 252 Days

Day: 35.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.47 AU - 0.78 AU

Year: 310 Days

Day: 16.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.5 AU - 0.76 AU

Year: 318 Days

Day: 22.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 12.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,757,033 km

• M1: 766,988 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 475.3

Radius: 9.2

Gravity: 5.62 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.69 AU - 1.09 AU

Year: 534 Days

Day: 11.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 68,757,033 km

• M1: 120,277 km (0.067 R)
• M2: 178,470 km (0.116 R)
• M3: 289,921 km (0.069 R)
• M4: 362,775 km (0.113 R)
• M5: 426,952 km (0.047 R)
• M6: 553,961 km (0.077 R)
• M7: 638,334 km (0.044 R)
• M8: 719,267 km (0.116 R)
• M9: 887,863 km (0.05 R)
• M10: 947,104 km (0.115 R)
• M11: 1,031,328 km (0.075 R)
• M12: 1,137,991 km (0.091 R)
• M13: 1,212,940 km (0.106 R)
• M14: 1,331,271 km (0.061 R)
• M15: 1,475,185 km (0.091 R)
• M16: 1,540,858 km (0.115 R)
• M17: 1,630,018 km (0.084 R)
• M18: 1,692,251 km (0.093 R)
• M19: 1,749,697 km (0.108 R)
• M20: 1,884,185 km (0.115 R)
• M21: 1,955,693 km (0.087 R)
• M22: 2,046,499 km (0.109 R)
• M23: 2,182,334 km (0.114 R)
• M24: 2,251,298 km (0.061 R)
• M25: 2,508,607 km (0.115 R)
• M26: 2,607,640 km (0.101 R)
• M27: 2,674,361 km (0.1 R)
• M28: 2,789,103 km (0.113 R)
• M29: 2,857,469 km (0.115 R)
• M30: 2,933,165 km (0.043 R)
• M31: 3,002,728 km (0.103 R)
• M32: 3,086,802 km (0.03 R)
• M33: 3,243,132 km (0.099 R)
• M34: 3,372,983 km (0.101 R)
• M35: 3,445,837 km (0.058 R)
• M36: 3,585,861 km (0.075 R)
• M37: 3,720,200 km (0.065 R)
• M38: 3,787,968 km (0.114 R)
• M39: 4,032,560 km (0.112 R)
• M40: 4,110,052 km (0.117 R)
• M41: 4,297,947 km (0.114 R)
• M42: 4,361,376 km (0.106 R)
• M43: 4,432,884 km (0.084 R)
• M44: 4,764,094 km (0.12 R)
• M45: 4,961,713 km (0.097 R)
• M46: 5,028,134 km (0.112 R)
• M47: 5,086,627 km (0.034 R)
• M48: 5,280,206 km (0.073 R)
• M49: 5,424,718 km (0.105 R)
• M50: 5,544,845 km (0.118 R)
• M51: 5,674,546 km (0.033 R)
• M52: 5,744,109 km (0.102 R)
• M53: 5,822,798 km (0.092 R)
• M54: 5,936,941 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290

Radius: 14.8

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.99 AU - 1.33 AU

Year: 794 Days

Day: 12.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 68,757,033 km

• M1: 185,651 km (0.086 R)
• M2: 279,150 km (0.073 R)
• M3: 379,380 km (0.116 R)
• M4: 483,650 km (0.118 R)
• M5: 601,832 km (0.12 R)
• M6: 715,377 km (0.099 R)
• M7: 828,772 km (0.066 R)
• M8: 1,056,311 km (0.112 R)
• M9: 1,152,502 km (0.069 R)
• M10: 1,294,919 km (0.081 R)
• M11: 1,511,686 km (0.075 R)
• M12: 1,604,288 km (0.07 R)
• M13: 1,900,491 km (0.053 R)
• M14: 2,195,050 km (0.097 R)
• M15: 2,588,043 km (0.113 R)
• M16: 2,714,603 km (0.111 R)
• M17: 2,843,407 km (0.08 R)
• M18: 3,310,601 km (0.094 R)
• M19: 3,518,392 km (0.068 R)
• M20: 3,754,458 km (0.109 R)
• M21: 3,858,428 km (0.035 R)
• M22: 4,110,201 km (0.103 R)
• M23: 4,359,282 km (0.081 R)
• M24: 4,468,638 km (0.099 R)
• M25: 4,587,568 km (0.059 R)
• M26: 4,750,780 km (0.062 R)
• M27: 4,933,439 km (0.052 R)
• M28: 5,314,614 km (0.049 R)
• M29: 5,458,976 km (0.079 R)
• M30: 5,577,308 km (0.102 R)
• M31: 5,742,464 km (0.108 R)
• M32: 5,881,291 km (0.103 R)
• M33: 6,371,673 km (0.092 R)
• M34: 6,506,011 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.5

Radius: 9.1

Gravity: 10.63 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.15 AU - 1.87 AU

Year: 1180 Days

Day: 12.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 68,757,033 km

• M1: 148,251 km (0.076 R)
• M2: 235,766 km (0.106 R)
• M3: 338,390 km (0.095 R)
• M4: 437,424 km (0.063 R)
• M5: 500,106 km (0.085 R)
• M6: 585,077 km (0.068 R)
• M7: 655,687 km (0.064 R)
• M8: 953,387 km (0.059 R)
• M9: 1,030,430 km (0.084 R)
• M10: 1,150,258 km (0.063 R)
• M11: 1,274,723 km (0.088 R)
• M12: 1,439,132 km (0.108 R)
• M13: 1,638,246 km (0.062 R)
• M14: 1,731,745 km (0.116 R)
• M15: 1,836,763 km (0.082 R)
• M16: 2,053,380 km (0.072 R)
• M17: 2,319,964 km (0.117 R)
• M18: 2,608,837 km (0.108 R)
• M19: 2,674,511 km (0.099 R)
• M20: 2,785,512 km (0.108 R)
• M21: 2,920,599 km (0.042 R)
• M22: 2,988,965 km (0.114 R)
• M23: 3,046,261 km (0.037 R)
• M24: 3,173,868 km (0.101 R)
• M25: 3,350,843 km (0.087 R)
• M26: 3,530,959 km (0.105 R)
• M27: 3,951,329 km (0.107 R)
• M28: 4,180,213 km (0.07 R)
• M29: 4,426,751 km (0.099 R)
• M30: 4,558,247 km (0.071 R)
• M31: 4,798,501 km (0.064 R)
• M32: 5,222,013 km (0.112 R)
• M33: 5,305,488 km (0.101 R)
• M34: 5,431,300 km (0.097 R)
• M35: 5,515,823 km (0.033 R)
• M36: 5,629,218 km (0.104 R)
• M37: 5,714,639 km (0.067 R)
• M38: 5,800,657 km (0.085 R)
• M39: 5,988,403 km (0.07 R)
• M40: 6,090,279 km (0.113 R)
• M41: 6,192,753 km (0.043 R)
• M42: 6,340,257 km (0.058 R)
• M43: 6,533,687 km (0.025 R)
• M44: 6,804,758 km (0.055 R)
• M45: 7,156,463 km (0.062 R)
• M46: 7,233,805 km (0.102 R)
• M47: 7,529,859 km (0.098 R)
• M48: 8,085,765 km (0.082 R)
• M49: 8,279,494 km (0.049 R)
• M50: 8,853,052 km (0.068 R)
• M51: 9,253,825 km (0.077 R)
• M52: 9,338,049 km (0.104 R)
• M53: 9,473,435 km (0.108 R)
• M54: 9,866,129 km (0.05 R)
• M55: 10,055,819 km (0.068 R)
• M56: 10,177,143 km (0.085 R)
• M57: 10,473,945 km (0.037 R)
• M58: 10,773,590 km (0.094 R)
• M59: 11,707,529 km (0.099 R)
• M60: 11,890,039 km (0.095 R)
• M61: 12,147,347 km (0.058 R)
• M62: 12,276,600 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.5

Radius: 14

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.91 AU - 3.11 AU

Year: 2528 Days

Day: 15 Hours

Environment

Temp: -192 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 68,757,033 km

• M1: 212,279 km (0.106 R)
• M2: 437,275 km (0.086 R)
• M3: 592,408 km (0.092 R)
• M4: 725,699 km (0.089 R)
• M5: 880,084 km (0.11 R)
• M6: 1,108,520 km (0.107 R)
• M7: 1,257,520 km (0.048 R)
• M8: 1,436,588 km (0.04 R)
• M9: 1,624,633 km (0.06 R)
• M10: 2,065,049 km (0.094 R)
• M11: 2,171,114 km (0.098 R)
• M12: 2,472,404 km (0.085 R)
• M13: 2,758,286 km (0.065 R)
• M14: 2,920,300 km (0.105 R)
• M15: 3,362,661 km (0.087 R)
• M16: 3,552,052 km (0.043 R)
• M17: 3,664,101 km (0.096 R)
• M18: 3,958,060 km (0.104 R)
• M19: 4,107,958 km (0.076 R)
• M20: 4,293,758 km (0.106 R)
• M21: 4,551,814 km (0.073 R)
• M22: 4,761,850 km (0.114 R)
• M23: 5,374,752 km (0.056 R)
• M24: 5,690,553 km (0.08 R)
• M25: 5,917,344 km (0.117 R)
• M26: 6,089,232 km (0.101 R)
• M27: 6,185,573 km (0.028 R)
• M28: 6,379,601 km (0.092 R)
• M29: 6,556,127 km (0.028 R)
• M30: 6,714,401 km (0.059 R)
• M31: 6,833,930 km (0.107 R)
• M32: 6,974,253 km (0.112 R)
• M33: 7,176,359 km (0.098 R)
• M34: 7,941,403 km (0.105 R)
• M35: 8,280,242 km (0.096 R)
• M36: 8,387,205 km (0.099 R)
• M37: 8,494,466 km (0.078 R)
• M38: 8,950,441 km (0.032 R)
• M39: 9,082,236 km (0.097 R)
• M40: 9,615,702 km (0.026 R)
• M41: 9,977,131 km (0.096 R)
• M42: 10,713,302 km (0.094 R)
• M43: 11,922,801 km (0.073 R)
• M44: 12,165,000 km (0.09 R)
• M45: 12,286,772 km (0.097 R)
• M46: 12,728,385 km (0.087 R)
• M47: 13,025,636 km (0.072 R)
• M48: 13,125,268 km (0.069 R)
• M49: 13,325,281 km (0.111 R)
• M50: 13,526,340 km (0.074 R)
• M51: 13,880,588 km (0.06 R)
• M52: 13,982,464 km (0.114 R)
• M53: 14,135,503 km (0.1 R)
• M54: 14,289,289 km (0.042 R)
• M55: 14,494,986 km (0.086 R)
• M56: 14,701,880 km (0.092 R)
• M57: 14,883,642 km (0.037 R)
• M58: 15,144,540 km (0.106 R)
• M59: 15,777,040 km (0.03 R)
• M60: 15,989,768 km (0.066 R)
• M61: 16,176,766 km (0.074 R)
• M62: 16,445,144 km (0.088 R)
• M63: 17,533,319 km (0.031 R)
• M64: 17,643,423 km (0.093 R)
• M65: 17,809,028 km (0.096 R)
• M66: 18,058,258 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 919.2

Radius: 6.3

Gravity: 23.16 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 7.42 AU - 7.98 AU

Year: 13585 Days

Day: 19.6 Hours

Environment

Temp: -233 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 68,757,033 km

• M1: 80,334 km (0.099 R)
• M2: 124,765 km (0.085 R)
• M3: 248,033 km (0.088 R)
• M4: 289,771 km (0.119 R)
• M5: 349,909 km (0.11 R)
• M6: 466,596 km (0.115 R)
• M7: 539,300 km (0.08 R)
• M8: 913,893 km (0.078 R)
• M9: 1,030,281 km (0.083 R)
• M10: 1,382,284 km (0.112 R)
• M11: 1,571,526 km (0.093 R)
• M12: 1,945,072 km (0.1 R)
• M13: 2,313,681 km (0.112 R)
• M14: 2,838,470 km (0.048 R)
• M15: 3,471,419 km (0.056 R)
• M16: 3,654,826 km (0.061 R)
• M17: 4,185,000 km (0.116 R)
• M18: 4,578,443 km (0.114 R)
• M19: 4,698,869 km (0.094 R)
• M20: 4,901,724 km (0.105 R)
• M21: 5,149,159 km (0.096 R)
• M22: 5,190,747 km (0.098 R)
• M23: 5,400,483 km (0.11 R)
• M24: 6,134,410 km (0.092 R)
• M25: 7,551,701 km (0.046 R)
• M26: 8,321,232 km (0.1 R)
• M27: 8,665,606 km (0.092 R)
• M28: 10,403,934 km (0.071 R)
• M29: 10,721,679 km (0.086 R)
• M30: 11,042,567 km (0.107 R)
• M31: 11,693,766 km (0.117 R)
• M32: 12,301,583 km (0.065 R)
• M33: 13,952,844 km (0.102 R)
• M34: 14,774,735 km (0.098 R)
• M35: 16,342,071 km (0.118 R)
• M36: 16,772,913 km (0.094 R)
• M37: 16,834,847 km (0.106 R)
• M38: 16,896,780 km (0.1 R)
• M39: 17,332,559 km (0.12 R)
• M40: 18,278,765 km (0.026 R)
• M41: 20,286,668 km (0.118 R)
• M42: 20,749,673 km (0.093 R)
• M43: 21,283,139 km (0.116 R)
• M44: 22,773,284 km (0.051 R)
• M45: 22,910,465 km (0.094 R)
• M46: 23,669,525 km (0.081 R)
• M47: 24,577,285 km (0.113 R)
• M48: 25,425,205 km (0.09 R)
• M49: 27,368,033 km (0.079 R)
• M50: 28,763,631 km (0.039 R)
• M51: 28,986,083 km (0.1 R)
• M52: 30,031,773 km (0.101 R)
• M53: 30,332,763 km (0.076 R)
• M54: 31,470,605 km (0.063 R)
• M55: 32,467,974 km (0.102 R)
• M56: 34,808,732 km (0.108 R)
• M57: 36,319,221 km (0.091 R)
• M58: 39,568,487 km (0.115 R)
• M59: 40,810,598 km (0.07 R)
• M60: 40,977,250 km (0.107 R)
• M61: 41,227,528 km (0.073 R)
• M62: 41,645,803 km (0.106 R)
• M63: 42,655,589 km (0.1 R)
• M64: 42,909,307 km (0.072 R)
• M65: 43,163,474 km (0.052 R)
• M66: 43,758,424 km (0.042 R)
• M67: 45,732,667 km (0.119 R)
• M68: 46,078,987 km (0.087 R)
• M69: 46,252,520 km (0.109 R)
• M70: 46,513,120 km (0.093 R)
• M71: 47,210,545 km (0.119 R)
• M72: 48,175,002 km (0.106 R)
• M73: 49,057,480 km (0.104 R)
• M74: 49,945,344 km (0.117 R)
• M75: 51,646,870 km (0.116 R)
• M76: 53,276,140 km (0.118 R)
• M77: 53,914,325 km (0.099 R)
• M78: 54,005,729 km (0.103 R)
• M79: 54,371,795 km (0.05 R)
• M80: 54,922,315 km (0.109 R)
• M81: 55,290,475 km (0.068 R)
• M82: 56,399,594 km (0.066 R)
• M83: 57,702,891 km (0.077 R)
• M84: 58,170,683 km (0.111 R)
• M85: 58,452,077 km (0.095 R)
• M86: 58,545,875 km (0.089 R)
• M87: 59,016,061 km (0.119 R)
• M88: 60,054,719 km (0.092 R)
• M89: 60,244,110 km (0.075 R)
• M90: 62,245,879 km (0.103 R)
• M91: 63,785,540 km (0.08 R)
• M92: 64,463,218 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 951.6

Radius: 3.6

Gravity: 73.43 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 7.25 AU - 8.89 AU

Year: 14576 Days

Day: 21.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 68,757,033 km

• M1: 69,114 km (0.12 R)
• M2: 170,990 km (0.102 R)
• M3: 268,977 km (0.119 R)
• M4: 332,855 km (0.09 R)
• M5: 438,172 km (0.111 R)
• M6: 514,168 km (0.066 R)
• M7: 1,570,478 km (0.073 R)
• M8: 2,689,620 km (0.065 R)
• M9: 2,865,398 km (0.105 R)
• M10: 3,377,621 km (0.111 R)
• M11: 3,453,018 km (0.097 R)
• M12: 4,156,876 km (0.116 R)
• M13: 4,319,190 km (0.119 R)
• M14: 4,650,100 km (0.084 R)
• M15: 4,818,547 km (0.079 R)
• M16: 4,903,519 km (0.113 R)
• M17: 6,052,879 km (0.113 R)
• M18: 6,563,008 km (0.103 R)
• M19: 6,610,132 km (0.043 R)
• M20: 7,135,070 km (0.1 R)
• M21: 7,673,473 km (0.115 R)
• M22: 7,723,140 km (0.116 R)
• M23: 9,154,193 km (0.11 R)
• M24: 9,312,318 km (0.098 R)
• M25: 9,577,854 km (0.076 R)
• M26: 9,738,373 km (0.077 R)
• M27: 10,499,227 km (0.105 R)
• M28: 11,222,683 km (0.117 R)
• M29: 12,483,045 km (0.112 R)
• M30: 12,717,016 km (0.084 R)
• M31: 12,834,450 km (0.041 R)
• M32: 13,189,147 km (0.09 R)
• M33: 14,150,762 km (0.084 R)
• M34: 14,333,570 km (0.101 R)
• M35: 14,763,066 km (0.093 R)
• M36: 16,076,984 km (0.113 R)
• M37: 16,331,450 km (0.108 R)
• M38: 16,779,944 km (0.076 R)
• M39: 16,844,421 km (0.103 R)
• M40: 17,102,777 km (0.117 R)
• M41: 18,017,717 km (0.088 R)
• M42: 18,215,785 km (0.091 R)
• M43: 19,758,438 km (0.075 R)
• M44: 20,994,715 km (0.077 R)
• M45: 22,468,254 km (0.111 R)
• M46: 22,752,639 km (0.072 R)
• M47: 23,541,020 km (0.05 R)
• M48: 24,265,373 km (0.105 R)
• M49: 24,484,085 km (0.069 R)
• M50: 25,365,665 km (0.043 R)
• M51: 25,439,567 km (0.065 R)
• M52: 25,736,070 km (0.057 R)
• M53: 25,959,120 km (0.035 R)
• M54: 26,257,568 km (0.089 R)
• M55: 27,538,574 km (0.114 R)
• M56: 30,160,876 km (0.07 R)
• M57: 30,631,810 km (0.116 R)
• M58: 31,026,150 km (0.113 R)
• M59: 33,346,113 km (0.089 R)
• M60: 33,670,442 km (0.11 R)
• M61: 33,995,967 km (0.063 R)
• M62: 34,813,968 km (0.076 R)
• M63: 34,896,097 km (0.072 R)
• M64: 35,390,518 km (0.112 R)
• M65: 35,970,210 km (0.038 R)
• M66: 37,390,941 km (0.049 R)
• M67: 40,114,519 km (0.077 R)
• M68: 40,978,746 km (0.114 R)
• M69: 41,239,196 km (0.083 R)
• M70: 43,342,542 km (0.092 R)
• M71: 43,873,764 km (0.119 R)
• M72: 43,962,476 km (0.078 R)
• M73: 44,407,230 km (0.102 R)
• M74: 45,570,204 km (0.072 R)
• M75: 48,109,179 km (0.082 R)
• M76: 52,472,800 km (0.057 R)
• M77: 52,661,293 km (0.094 R)
• M78: 52,944,482 km (0.116 R)
• M79: 54,367,756 km (0.073 R)
• M80: 56,092,170 km (0.111 R)
• M81: 57,737,298 km (0.098 R)
• M82: 60,086,583 km (0.08 R)
• M83: 60,481,073 km (0.054 R)
• M84: 61,868,892 km (0.092 R)
• M85: 62,466,835 km (0.104 R)
• M86: 62,666,698 km (0.106 R)
• M87: 64,070,823 km (0.082 R)
• M88: 65,586,848 km (0.108 R)
• M89: 66,400,212 km (0.057 R)
• M90: 66,502,088 km (0.119 R)
• M91: 67,523,991 km (0.096 R)
• M92: 68,345,134 km (0.096 R)
• M93: 68,654,053 km (0.036 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 230 - 19,452 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit