🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.58 AU - 0.94 AU

Year: 255 Days

Day: 38.4 Hours

Environment

Temp: 156 °C

Axial Tilt: 41.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.25 AU - 1.29 AU

Year: 551 Days

Day: 14.9 Hours

Environment

Temp: -32 °C

Axial Tilt: 31.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,126,008 km

• M1: 111,600 km (0.064 R)

Asteroid Belt

Center: 3.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 5.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.7

Radius: 11.9

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 4.98 AU - 5.62 AU

Year: 4698 Days

Day: 11.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 89,126,008 km

• M1: 148,999 km (0.107 R)
• M2: 406,308 km (0.084 R)
• M3: 571,314 km (0.093 R)
• M4: 651,648 km (0.089 R)
• M5: 865,124 km (0.092 R)
• M6: 960,119 km (0.11 R)
• M7: 1,425,069 km (0.097 R)
• M8: 1,589,328 km (0.073 R)
• M9: 1,691,054 km (0.039 R)
• M10: 1,883,437 km (0.063 R)
• M11: 2,138,950 km (0.119 R)
• M12: 2,972,210 km (0.098 R)
• M13: 3,163,097 km (0.096 R)
• M14: 3,423,996 km (0.1 R)
• M15: 3,646,747 km (0.107 R)
• M16: 3,990,074 km (0.093 R)
• M17: 4,083,274 km (0.058 R)
• M18: 5,885,180 km (0.05 R)
• M19: 6,045,250 km (0.057 R)
• M20: 6,125,883 km (0.084 R)
• M21: 6,369,877 km (0.06 R)
• M22: 6,644,689 km (0.08 R)
• M23: 8,225,489 km (0.118 R)
• M24: 8,434,627 km (0.102 R)
• M25: 8,889,105 km (0.041 R)
• M26: 9,227,496 km (0.107 R)
• M27: 9,351,512 km (0.114 R)
• M28: 9,507,393 km (0.11 R)
• M29: 9,948,558 km (0.027 R)
• M30: 10,171,758 km (0.085 R)
• M31: 10,267,799 km (0.074 R)
• M32: 10,525,706 km (0.106 R)
• M33: 10,818,320 km (0.084 R)
• M34: 11,245,721 km (0.107 R)
• M35: 11,444,836 km (0.071 R)
• M36: 11,578,277 km (0.062 R)
• M37: 11,678,657 km (0.095 R)
• M38: 12,458,211 km (0.107 R)
• M39: 12,733,322 km (0.089 R)
• M40: 12,975,671 km (0.102 R)
• M41: 13,079,940 km (0.109 R)
• M42: 13,184,509 km (0.103 R)
• M43: 13,464,856 km (0.09 R)
• M44: 13,605,777 km (0.111 R)
• M45: 14,678,393 km (0.115 R)
• M46: 14,823,354 km (0.11 R)
• M47: 15,408,431 km (0.071 R)
• M48: 15,518,984 km (0.039 R)
• M49: 16,075,638 km (0.106 R)
• M50: 16,337,583 km (0.115 R)
• M51: 16,676,572 km (0.114 R)
• M52: 16,752,269 km (0.051 R)
• M53: 16,941,959 km (0.114 R)
• M54: 17,132,247 km (0.092 R)
• M55: 18,641,091 km (0.059 R)
• M56: 18,995,339 km (0.112 R)
• M57: 19,471,210 km (0.116 R)
• M58: 19,550,796 km (0.092 R)
• M59: 20,677,866 km (0.091 R)
• M60: 22,449,255 km (0.116 R)
• M61: 22,532,880 km (0.057 R)
• M62: 22,700,280 km (0.1 R)
• M63: 23,120,800 km (0.077 R)
• M64: 25,088,012 km (0.051 R)
• M65: 25,305,078 km (0.108 R)
• M66: 25,479,210 km (0.094 R)
• M67: 26,664,773 km (0.085 R)
• M68: 27,644,041 km (0.098 R)
• M69: 27,913,167 km (0.112 R)
• M70: 28,048,105 km (0.105 R)
• M71: 29,226,188 km (0.051 R)
• M72: 29,363,220 km (0.08 R)
• M73: 29,867,364 km (0.048 R)
• M74: 30,698,381 km (0.103 R)
• M75: 31,163,331 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.2

Radius: 10.9

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 7.33 AU - 8.37 AU

Year: 8468 Days

Day: 13.6 Hours

Environment

Temp: -174 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 89,126,008 km

• M1: 141,968 km (0.109 R)
• M2: 215,421 km (0.114 R)
• M3: 350,957 km (0.066 R)
• M4: 524,789 km (0.1 R)
• M5: 897,737 km (0.113 R)
• M6: 1,130,511 km (0.048 R)
• M7: 1,218,624 km (0.095 R)
• M8: 1,714,392 km (0.088 R)
• M9: 1,984,865 km (0.077 R)
• M10: 3,048,655 km (0.106 R)
• M11: 3,274,847 km (0.115 R)
• M12: 3,532,754 km (0.059 R)
• M13: 3,743,986 km (0.045 R)
• M14: 4,013,860 km (0.092 R)
• M15: 4,262,343 km (0.107 R)
• M16: 4,630,054 km (0.037 R)
• M17: 4,716,372 km (0.103 R)
• M18: 5,456,732 km (0.095 R)
• M19: 5,918,391 km (0.113 R)
• M20: 6,106,585 km (0.091 R)
• M21: 6,201,580 km (0.1 R)
• M22: 6,296,874 km (0.083 R)
• M23: 6,846,496 km (0.071 R)
• M24: 7,110,536 km (0.081 R)
• M25: 8,026,225 km (0.034 R)
• M26: 8,165,052 km (0.102 R)
• M27: 8,409,943 km (0.117 R)
• M28: 10,266,453 km (0.059 R)
• M29: 10,797,675 km (0.113 R)
• M30: 11,143,845 km (0.088 R)
• M31: 11,571,994 km (0.075 R)
• M32: 11,689,578 km (0.099 R)
• M33: 12,204,194 km (0.099 R)
• M34: 12,484,391 km (0.076 R)
• M35: 12,766,832 km (0.117 R)
• M36: 12,847,914 km (0.058 R)
• M37: 13,833,913 km (0.037 R)
• M38: 14,504,710 km (0.114 R)
• M39: 15,747,569 km (0.097 R)
• M40: 16,096,432 km (0.048 R)
• M41: 16,359,874 km (0.047 R)
• M42: 16,890,796 km (0.071 R)
• M43: 18,471,597 km (0.103 R)
• M44: 18,839,458 km (0.065 R)
• M45: 19,163,338 km (0.113 R)
• M46: 19,349,288 km (0.03 R)
• M47: 19,629,335 km (0.045 R)
• M48: 20,004,826 km (0.067 R)
• M49: 20,667,694 km (0.099 R)
• M50: 21,001,746 km (0.069 R)
• M51: 21,337,743 km (0.081 R)
• M52: 21,675,385 km (0.079 R)
• M53: 22,453,892 km (0.102 R)
• M54: 22,748,151 km (0.103 R)
• M55: 23,142,641 km (0.06 R)
• M56: 23,489,558 km (0.098 R)
• M57: 23,788,305 km (0.093 R)
• M58: 24,088,399 km (0.044 R)
• M59: 24,339,274 km (0.105 R)
• M60: 24,540,783 km (0.086 R)
• M61: 24,742,740 km (0.117 R)
• M62: 25,301,039 km (0.066 R)
• M63: 25,658,428 km (0.082 R)
• M64: 26,275,071 km (0.106 R)
• M65: 26,844,590 km (0.034 R)
• M66: 28,577,681 km (0.046 R)
• M67: 29,109,950 km (0.075 R)
• M68: 29,377,282 km (0.062 R)
• M69: 29,860,633 km (0.115 R)
• M70: 30,454,985 km (0.117 R)
• M71: 30,998,624 km (0.111 R)
• M72: 31,655,209 km (0.07 R)
• M73: 31,985,222 km (0.052 R)
• M74: 32,759,839 km (0.117 R)
• M75: 32,982,291 km (0.07 R)
• M76: 33,708,739 km (0.116 R)
• M77: 33,989,534 km (0.116 R)
• M78: 35,348,032 km (0.104 R)
• M79: 35,976,642 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.6

Radius: 11.5

Gravity: 6.32 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 8.77 AU - 8.87 AU

Year: 10085 Days

Day: 9.5 Hours

Environment

Temp: -175 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 89,126,008 km

• M1: 147,653 km (0.112 R)
• M2: 267,032 km (0.099 R)
• M3: 383,719 km (0.08 R)
• M4: 700,118 km (0.081 R)
• M5: 1,013,825 km (0.113 R)
• M6: 1,176,886 km (0.114 R)
• M7: 1,327,083 km (0.073 R)
• M8: 2,016,878 km (0.102 R)
• M9: 2,172,311 km (0.039 R)
• M10: 2,304,854 km (0.073 R)
• M11: 2,385,787 km (0.076 R)
• M12: 2,719,091 km (0.106 R)
• M13: 2,862,406 km (0.082 R)
• M14: 3,523,030 km (0.105 R)
• M15: 4,163,907 km (0.096 R)
• M16: 4,363,171 km (0.065 R)
• M17: 4,464,150 km (0.062 R)
• M18: 6,144,284 km (0.093 R)
• M19: 6,486,414 km (0.106 R)
• M20: 6,795,782 km (0.089 R)
• M21: 7,070,444 km (0.105 R)
• M22: 7,712,219 km (0.068 R)
• M23: 8,289,068 km (0.065 R)
• M24: 8,372,544 km (0.071 R)
• M25: 8,624,916 km (0.103 R)
• M26: 8,837,195 km (0.093 R)
• M27: 9,008,185 km (0.096 R)
• M28: 9,615,403 km (0.05 R)
• M29: 9,968,454 km (0.062 R)
• M30: 10,687,122 km (0.095 R)
• M31: 10,823,855 km (0.096 R)
• M32: 11,562,419 km (0.03 R)
• M33: 11,702,742 km (0.095 R)
• M34: 12,221,996 km (0.118 R)
• M35: 12,700,710 km (0.077 R)
• M36: 13,332,162 km (0.111 R)
• M37: 13,676,387 km (0.115 R)
• M38: 14,023,604 km (0.062 R)
• M39: 15,031,594 km (0.115 R)
• M40: 15,390,031 km (0.096 R)
• M41: 15,596,027 km (0.062 R)
• M42: 16,115,131 km (0.089 R)
• M43: 16,957,517 km (0.119 R)
• M44: 18,193,495 km (0.099 R)
• M45: 18,465,912 km (0.109 R)
• M46: 20,581,077 km (0.119 R)
• M47: 20,751,319 km (0.099 R)
• M48: 21,379,480 km (0.094 R)
• M49: 22,596,160 km (0.076 R)
• M50: 22,830,430 km (0.043 R)
• M51: 24,253,106 km (0.119 R)
• M52: 24,673,476 km (0.085 R)
• M53: 25,096,240 km (0.062 R)
• M54: 26,010,133 km (0.087 R)
• M55: 26,132,803 km (0.103 R)
• M56: 27,432,659 km (0.093 R)
• M57: 28,122,006 km (0.109 R)
• M58: 28,753,608 km (0.108 R)
• M59: 29,007,476 km (0.094 R)
• M60: 29,966,398 km (0.065 R)
• M61: 31,522,216 km (0.08 R)
• M62: 32,375,822 km (0.03 R)
• M63: 33,237,206 km (0.083 R)
• M64: 34,509,536 km (0.111 R)
• M65: 35,185,569 km (0.108 R)
• M66: 38,700,969 km (0.06 R)
• M67: 40,820,472 km (0.079 R)
• M68: 42,182,261 km (0.101 R)
• M69: 42,398,729 km (0.032 R)
• M70: 42,470,835 km (0.054 R)
• M71: 43,631,865 km (0.051 R)
• M72: 44,143,040 km (0.063 R)
• M73: 46,059,090 km (0.104 R)
• M74: 46,356,341 km (0.115 R)
• M75: 46,505,191 km (0.112 R)
• M76: 47,326,633 km (0.108 R)
• M77: 49,971,972 km (0.049 R)
• M78: 50,124,562 km (0.087 R)
• M79: 50,506,784 km (0.115 R)
• M80: 50,813,310 km (0.074 R)

Planet 6 - Ice Giant

Semi-Major Axis: 12.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 958.9

Radius: 7.8

Gravity: 15.76 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 12.31 AU - 12.69 AU

Year: 17015 Days

Day: 19.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 89,126,008 km

• M1: 296,952 km (0.089 R)
• M2: 346,020 km (0.07 R)
• M3: 473,926 km (0.043 R)
• M4: 874,699 km (0.083 R)
• M5: 1,420,731 km (0.114 R)
• M6: 2,296,627 km (0.114 R)
• M7: 2,957,849 km (0.1 R)
• M8: 3,349,347 km (0.078 R)
• M9: 4,799,698 km (0.101 R)
• M10: 5,399,735 km (0.114 R)
• M11: 5,780,611 km (0.118 R)
• M12: 5,925,721 km (0.091 R)
• M13: 6,318,565 km (0.119 R)
• M14: 6,618,808 km (0.084 R)
• M15: 7,812,300 km (0.088 R)
• M16: 8,736,516 km (0.078 R)
• M17: 8,903,168 km (0.034 R)
• M18: 9,070,867 km (0.108 R)
• M19: 9,296,161 km (0.069 R)
• M20: 9,925,220 km (0.109 R)
• M21: 10,450,159 km (0.049 R)
• M22: 10,984,074 km (0.109 R)
• M23: 11,164,040 km (0.078 R)
• M24: 11,648,588 km (0.091 R)
• M25: 12,575,795 km (0.11 R)
• M26: 15,496,395 km (0.039 R)
• M27: 16,240,943 km (0.091 R)
• M28: 16,651,889 km (0.074 R)
• M29: 16,720,704 km (0.096 R)
• M30: 17,205,251 km (0.114 R)
• M31: 17,975,830 km (0.076 R)
• M32: 18,046,590 km (0.09 R)
• M33: 18,117,200 km (0.077 R)
• M34: 18,901,242 km (0.108 R)
• M35: 19,768,910 km (0.071 R)
• M36: 19,987,921 km (0.105 R)
• M37: 28,882,263 km (0.118 R)
• M38: 29,296,948 km (0.113 R)
• M39: 29,546,627 km (0.095 R)
• M40: 29,880,679 km (0.116 R)
• M41: 30,468,150 km (0.088 R)
• M42: 30,552,373 km (0.102 R)
• M43: 30,721,120 km (0.054 R)
• M44: 32,942,648 km (0.119 R)
• M45: 33,288,967 km (0.027 R)
• M46: 33,549,566 km (0.119 R)
• M47: 33,723,698 km (0.089 R)
• M48: 34,422,919 km (0.088 R)
• M49: 35,480,875 km (0.027 R)
• M50: 37,357,879 km (0.082 R)
• M51: 37,538,294 km (0.112 R)
• M52: 37,628,652 km (0.056 R)
• M53: 38,444,858 km (0.07 R)
• M54: 38,992,236 km (0.11 R)
• M55: 39,634,161 km (0.077 R)
• M56: 40,928,332 km (0.033 R)
• M57: 41,487,229 km (0.093 R)
• M58: 41,674,077 km (0.119 R)
• M59: 42,424,311 km (0.095 R)
• M60: 44,701,789 km (0.057 R)
• M61: 47,018,611 km (0.088 R)
• M62: 47,799,512 km (0.046 R)
• M63: 48,486,315 km (0.089 R)
• M64: 50,367,060 km (0.036 R)
• M65: 52,271,441 km (0.106 R)
• M66: 52,574,376 km (0.113 R)
• M67: 52,979,039 km (0.039 R)
• M68: 54,608,160 km (0.073 R)
• M69: 55,223,306 km (0.105 R)
• M70: 55,737,773 km (0.119 R)
• M71: 59,909,758 km (0.025 R)
• M72: 60,438,288 km (0.105 R)
• M73: 60,544,203 km (0.093 R)
• M74: 62,782,187 km (0.088 R)
• M75: 63,318,944 km (0.116 R)
• M76: 63,749,637 km (0.11 R)
• M77: 65,481,531 km (0.095 R)
• M78: 65,590,289 km (0.107 R)
• M79: 67,228,984 km (0.085 R)
• M80: 67,338,639 km (0.079 R)
• M81: 67,448,444 km (0.09 R)
• M82: 67,888,262 km (0.085 R)
• M83: 68,549,634 km (0.112 R)
• M84: 68,991,696 km (0.106 R)
• M85: 73,238,630 km (0.119 R)
• M86: 73,690,565 km (0.086 R)
• M87: 74,030,152 km (0.074 R)
• M88: 74,143,547 km (0.116 R)
• M89: 75,507,730 km (0.039 R)
• M90: 75,850,010 km (0.09 R)
• M91: 76,192,888 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 909

Radius: 7.7

Gravity: 15.33 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 11.72 AU - 17.96 AU

Year: 22010 Days

Day: 21.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 89,126,008 km

• M1: 243,246 km (0.062 R)
• M2: 386,262 km (0.12 R)
• M3: 1,537,268 km (0.053 R)
• M4: 2,148,225 km (0.046 R)
• M5: 2,419,895 km (0.045 R)
• M6: 3,168,333 km (0.111 R)
• M7: 3,796,644 km (0.062 R)
• M8: 4,268,775 km (0.092 R)
• M9: 5,164,866 km (0.115 R)
• M10: 5,581,347 km (0.102 R)
• M11: 6,557,623 km (0.099 R)
• M12: 7,122,654 km (0.108 R)
• M13: 7,353,035 km (0.114 R)
• M14: 7,999,148 km (0.081 R)
• M15: 9,534,471 km (0.049 R)
• M16: 10,108,927 km (0.086 R)
• M17: 10,432,956 km (0.091 R)
• M18: 10,498,180 km (0.1 R)
• M19: 10,826,248 km (0.119 R)
• M20: 11,157,907 km (0.061 R)
• M21: 12,864,968 km (0.1 R)
• M22: 15,314,035 km (0.1 R)
• M23: 15,910,781 km (0.068 R)
• M24: 16,591,152 km (0.115 R)
• M25: 16,896,631 km (0.101 R)
• M26: 17,668,406 km (0.09 R)
• M27: 17,824,138 km (0.093 R)
• M28: 19,326,250 km (0.116 R)
• M29: 19,809,002 km (0.091 R)
• M30: 21,033,311 km (0.095 R)
• M31: 22,281,855 km (0.101 R)
• M32: 23,983,680 km (0.096 R)
• M33: 27,420,392 km (0.097 R)
• M34: 27,781,521 km (0.111 R)
• M35: 28,235,102 km (0.06 R)
• M36: 29,610,655 km (0.101 R)
• M37: 30,353,109 km (0.099 R)
• M38: 30,820,303 km (0.115 R)
• M39: 31,101,697 km (0.107 R)
• M40: 31,195,794 km (0.108 R)
• M41: 32,999,794 km (0.099 R)
• M42: 36,113,674 km (0.077 R)
• M43: 36,311,442 km (0.094 R)
• M44: 36,410,327 km (0.073 R)
• M45: 36,509,510 km (0.063 R)
• M46: 36,608,693 km (0.086 R)
• M47: 37,105,807 km (0.037 R)
• M48: 37,705,545 km (0.103 R)
• M49: 37,906,006 km (0.109 R)
• M50: 38,509,933 km (0.112 R)
• M51: 39,320,005 km (0.11 R)
• M52: 39,421,732 km (0.083 R)
• M53: 40,751,358 km (0.113 R)
• M54: 43,559,310 km (0.107 R)
• M55: 44,509,106 km (0.096 R)
• M56: 44,721,087 km (0.063 R)
• M57: 45,786,074 km (0.103 R)
• M58: 46,967,299 km (0.113 R)
• M59: 48,267,155 km (0.113 R)
• M60: 49,031,001 km (0.117 R)
• M61: 54,374,637 km (0.107 R)
• M62: 54,828,218 km (0.118 R)
• M63: 55,510,983 km (0.093 R)
• M64: 55,739,119 km (0.059 R)
• M65: 56,769,998 km (0.05 R)
• M66: 56,999,781 km (0.107 R)
• M67: 58,269,867 km (0.069 R)
• M68: 59,199,468 km (0.085 R)
• M69: 60,016,871 km (0.107 R)
• M70: 60,250,991 km (0.116 R)
• M71: 60,368,276 km (0.095 R)
• M72: 60,837,864 km (0.063 R)
• M73: 61,073,181 km (0.094 R)
• M74: 61,190,915 km (0.066 R)
• M75: 62,372,588 km (0.057 R)
• M76: 62,728,631 km (0.115 R)
• M77: 67,174,231 km (0.102 R)
• M78: 67,295,705 km (0.112 R)
• M79: 67,904,717 km (0.111 R)
• M80: 69,496,289 km (0.06 R)
• M81: 70,852,544 km (0.085 R)
• M82: 73,215,891 km (0.115 R)
• M83: 73,716,744 km (0.105 R)
• M84: 74,093,133 km (0.096 R)
• M85: 76,491,486 km (0.097 R)
• M86: 76,872,511 km (0.119 R)
• M87: 77,764,115 km (0.065 R)
• M88: 78,787,065 km (0.033 R)
• M89: 79,171,980 km (0.114 R)
• M90: 79,943,457 km (0.104 R)
• M91: 80,072,260 km (0.047 R)
• M92: 82,142,695 km (0.105 R)
• M93: 87,262,981 km (0.053 R)
• M94: 88,992,482 km (0.09 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 394 - 15,097 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit