🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.83 AU - 1.07 AU

Year: 328 Days

Day: 21 Hours

Environment

Temp: 84 °C

Axial Tilt: 22.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2 AU - 2.92 AU

Year: 1369 Days

Day: 38.4 Hours

Environment

Temp: -75 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 4.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 4.37 AU - 5.29 AU

Year: 3766 Days

Day: 47.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 85,278,118 km

• M1: 920,027 km (0.095 R)
• M2: 4,033,907 km (0.102 R)

Planet 4 - Terrestrial

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.11

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 4.06 AU - 5.64 AU

Year: 3789 Days

Day: 46.6 Hours

Environment

Temp: -130 °C

Axial Tilt: 36.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.76

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 4.29 AU - 5.97 AU

Year: 4122 Days

Day: 42.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458.7

Radius: 8.9

Gravity: 5.79 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 4.22 AU - 6.82 AU

Year: 4601 Days

Day: 7.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 85,278,118 km

• M1: 214,972 km (0.086 R)
• M2: 372,349 km (0.067 R)
• M3: 431,590 km (0.066 R)
• M4: 532,568 km (0.12 R)
• M5: 632,051 km (0.094 R)
• M6: 694,882 km (0.108 R)
• M7: 793,766 km (0.109 R)
• M8: 981,512 km (0.104 R)
• M9: 1,043,296 km (0.03 R)
• M10: 1,132,157 km (0.108 R)
• M11: 1,331,122 km (0.104 R)
• M12: 1,400,086 km (0.045 R)
• M13: 1,599,800 km (0.031 R)
• M14: 1,839,306 km (0.082 R)
• M15: 1,963,472 km (0.112 R)
• M16: 2,386,385 km (0.078 R)
• M17: 3,072,890 km (0.033 R)
• M18: 3,371,338 km (0.095 R)
• M19: 3,447,483 km (0.091 R)
• M20: 3,640,315 km (0.107 R)
• M21: 3,836,737 km (0.108 R)
• M22: 3,896,426 km (0.091 R)
• M23: 4,240,202 km (0.094 R)
• M24: 5,329,125 km (0.055 R)
• M25: 5,870,370 km (0.097 R)
• M26: 5,962,223 km (0.116 R)
• M27: 6,786,807 km (0.093 R)
• M28: 7,029,006 km (0.118 R)
• M29: 7,102,159 km (0.053 R)
• M30: 7,298,581 km (0.087 R)
• M31: 7,397,615 km (0.074 R)
• M32: 7,571,747 km (0.106 R)
• M33: 7,646,845 km (0.093 R)
• M34: 7,822,921 km (0.113 R)
• M35: 8,385,260 km (0.034 R)
• M36: 8,566,872 km (0.112 R)
• M37: 8,645,111 km (0.098 R)
• M38: 9,066,529 km (0.087 R)
• M39: 9,146,264 km (0.114 R)
• M40: 9,279,855 km (0.076 R)
• M41: 9,360,189 km (0.06 R)
• M42: 9,494,678 km (0.118 R)
• M43: 9,929,409 km (0.077 R)
• M44: 10,066,590 km (0.114 R)
• M45: 10,259,721 km (0.047 R)
• M46: 10,482,024 km (0.089 R)
• M47: 11,129,782 km (0.081 R)
• M48: 11,215,203 km (0.104 R)
• M49: 11,415,514 km (0.094 R)
• M50: 11,819,578 km (0.109 R)
• M51: 11,994,159 km (0.091 R)
• M52: 12,169,637 km (0.056 R)
• M53: 12,790,468 km (0.117 R)
• M54: 13,089,814 km (0.068 R)
• M55: 13,421,622 km (0.097 R)
• M56: 13,664,868 km (0.094 R)
• M57: 14,001,463 km (0.085 R)
• M58: 15,375,370 km (0.049 R)
• M59: 15,917,662 km (0.08 R)
• M60: 16,304,223 km (0.076 R)
• M61: 16,726,538 km (0.098 R)
• M62: 17,449,395 km (0.033 R)
• M63: 17,847,924 km (0.053 R)
• M64: 19,061,611 km (0.04 R)
• M65: 19,300,818 km (0.058 R)
• M66: 19,885,596 km (0.105 R)
• M67: 20,336,634 km (0.112 R)
• M68: 20,896,579 km (0.118 R)
• M69: 21,461,460 km (0.105 R)
• M70: 21,532,519 km (0.097 R)
• M71: 21,674,637 km (0.119 R)
• M72: 22,534,226 km (0.113 R)
• M73: 22,932,007 km (0.109 R)
• M74: 23,004,562 km (0.057 R)
• M75: 23,478,039 km (0.079 R)
• M76: 23,660,998 km (0.075 R)
• M77: 24,028,410 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572

Radius: 9.4

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 6.21 AU - 8.23 AU

Year: 6882 Days

Day: 13.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 85,278,118 km

• M1: 122,670 km (0.114 R)
• M2: 223,649 km (0.075 R)
• M3: 308,321 km (0.097 R)
• M4: 397,482 km (0.091 R)
• M5: 497,263 km (0.105 R)
• M6: 632,350 km (0.118 R)
• M7: 698,024 km (0.118 R)
• M8: 794,365 km (0.068 R)
• M9: 1,001,408 km (0.115 R)
• M10: 1,159,982 km (0.119 R)
• M11: 1,310,029 km (0.092 R)
• M12: 1,611,319 km (0.116 R)
• M13: 1,685,370 km (0.114 R)
• M14: 1,993,392 km (0.112 R)
• M15: 2,277,628 km (0.096 R)
• M16: 2,662,244 km (0.088 R)
• M17: 3,067,205 km (0.064 R)
• M18: 3,206,630 km (0.077 R)
• M19: 3,612,938 km (0.06 R)
• M20: 5,119,090 km (0.074 R)
• M21: 5,257,168 km (0.074 R)
• M22: 5,764,455 km (0.116 R)
• M23: 6,524,562 km (0.103 R)
• M24: 6,584,401 km (0.096 R)
• M25: 7,069,397 km (0.089 R)
• M26: 7,192,366 km (0.041 R)
• M27: 7,254,150 km (0.102 R)
• M28: 7,628,743 km (0.071 R)
• M29: 8,299,241 km (0.109 R)
• M30: 8,723,800 km (0.092 R)
• M31: 9,256,069 km (0.113 R)
• M32: 9,833,218 km (0.083 R)
• M33: 12,256,105 km (0.083 R)
• M34: 12,330,006 km (0.069 R)
• M35: 12,889,353 km (0.111 R)
• M36: 12,964,600 km (0.12 R)
• M37: 14,032,729 km (0.114 R)
• M38: 14,382,040 km (0.059 R)
• M39: 14,655,804 km (0.078 R)
• M40: 14,812,882 km (0.119 R)
• M41: 14,891,720 km (0.034 R)
• M42: 14,970,708 km (0.074 R)
• M43: 15,687,431 km (0.11 R)
• M44: 15,888,491 km (0.102 R)
• M45: 16,496,905 km (0.093 R)
• M46: 16,578,586 km (0.071 R)
• M47: 16,865,514 km (0.11 R)
• M48: 16,947,943 km (0.115 R)
• M49: 17,071,660 km (0.095 R)
• M50: 17,820,098 km (0.094 R)
• M51: 18,325,141 km (0.104 R)
• M52: 18,706,915 km (0.092 R)
• M53: 19,955,159 km (0.075 R)
• M54: 20,129,441 km (0.093 R)
• M55: 20,260,488 km (0.071 R)
• M56: 20,479,500 km (0.063 R)
• M57: 20,743,390 km (0.066 R)
• M58: 20,875,635 km (0.114 R)
• M59: 21,765,293 km (0.097 R)
• M60: 22,034,570 km (0.099 R)
• M61: 22,259,864 km (0.072 R)
• M62: 23,214,298 km (0.095 R)
• M63: 23,305,852 km (0.091 R)
• M64: 23,397,556 km (0.085 R)
• M65: 23,673,414 km (0.118 R)
• M66: 24,042,921 km (0.082 R)
• M67: 24,274,947 km (0.096 R)
• M68: 24,507,572 km (0.1 R)
• M69: 24,600,771 km (0.108 R)
• M70: 25,351,304 km (0.058 R)
• M71: 25,492,824 km (0.105 R)
• M72: 25,776,611 km (0.105 R)
• M73: 25,919,028 km (0.087 R)
• M74: 26,061,595 km (0.101 R)
• M75: 26,156,739 km (0.102 R)
• M76: 29,462,104 km (0.12 R)
• M77: 30,760,314 km (0.047 R)
• M78: 30,860,994 km (0.054 R)
• M79: 31,517,878 km (0.111 R)
• M80: 32,179,250 km (0.103 R)
• M81: 32,999,495 km (0.085 R)
• M82: 33,982,652 km (0.051 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 489.1

Radius: 11.5

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 6.81 AU - 8.63 AU

Year: 7610 Days

Day: 11.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 85,278,118 km

• M1: 155,582 km (0.067 R)
• M2: 259,104 km (0.1 R)
• M3: 375,939 km (0.094 R)
• M4: 589,266 km (0.092 R)
• M5: 1,168,060 km (0.081 R)
• M6: 1,733,690 km (0.097 R)
• M7: 1,966,314 km (0.105 R)
• M8: 2,046,200 km (0.089 R)
• M9: 2,127,132 km (0.101 R)
• M10: 2,229,906 km (0.044 R)
• M11: 2,440,540 km (0.104 R)
• M12: 2,635,914 km (0.117 R)
• M13: 2,724,476 km (0.101 R)
• M14: 2,904,443 km (0.069 R)
• M15: 2,995,997 km (0.068 R)
• M16: 3,158,609 km (0.087 R)
• M17: 3,444,192 km (0.088 R)
• M18: 3,763,134 km (0.097 R)
• M19: 4,091,651 km (0.11 R)
• M20: 4,642,172 km (0.058 R)
• M21: 4,803,887 km (0.1 R)
• M22: 4,912,644 km (0.069 R)
• M23: 5,356,202 km (0.054 R)
• M24: 5,668,712 km (0.111 R)
• M25: 6,341,304 km (0.067 R)
• M26: 6,460,833 km (0.062 R)
• M27: 6,854,724 km (0.071 R)
• M28: 7,008,211 km (0.105 R)
• M29: 7,131,929 km (0.117 R)
• M30: 7,602,265 km (0.117 R)
• M31: 8,212,624 km (0.093 R)
• M32: 8,972,431 km (0.114 R)
• M33: 9,858,350 km (0.106 R)
• M34: 10,417,397 km (0.057 R)
• M35: 11,311,544 km (0.092 R)
• M36: 11,384,248 km (0.045 R)
• M37: 11,493,455 km (0.108 R)
• M38: 11,749,566 km (0.057 R)
• M39: 11,823,019 km (0.09 R)
• M40: 12,081,674 km (0.064 R)
• M41: 12,416,922 km (0.063 R)
• M42: 12,566,969 km (0.116 R)
• M43: 13,325,879 km (0.086 R)
• M44: 13,710,944 km (0.116 R)
• M45: 14,334,767 km (0.118 R)
• M46: 14,452,650 km (0.12 R)
• M47: 14,768,900 km (0.103 R)
• M48: 15,167,429 km (0.094 R)
• M49: 15,327,798 km (0.083 R)
• M50: 15,569,548 km (0.089 R)
• M51: 16,589,955 km (0.077 R)
• M52: 16,838,138 km (0.086 R)
• M53: 17,087,518 km (0.095 R)
• M54: 18,781,265 km (0.097 R)
• M55: 19,256,388 km (0.034 R)
• M56: 20,086,357 km (0.095 R)
• M57: 20,350,995 km (0.117 R)
• M58: 20,483,688 km (0.095 R)
• M59: 21,151,493 km (0.051 R)
• M60: 21,241,102 km (0.114 R)
• M61: 23,013,239 km (0.095 R)
• M62: 23,151,467 km (0.111 R)
• M63: 24,267,617 km (0.115 R)
• M64: 24,502,486 km (0.114 R)
• M65: 24,974,168 km (0.072 R)
• M66: 25,116,286 km (0.099 R)
• M67: 25,401,419 km (0.037 R)
• M68: 26,022,699 km (0.117 R)
• M69: 26,118,591 km (0.11 R)
• M70: 27,134,062 km (0.051 R)
• M71: 28,211,765 km (0.106 R)
• M72: 29,004,185 km (0.102 R)
• M73: 29,253,415 km (0.12 R)
• M74: 29,453,128 km (0.078 R)
• M75: 30,358,045 km (0.1 R)
• M76: 31,017,323 km (0.118 R)
• M77: 31,578,764 km (0.108 R)
• M78: 32,556,536 km (0.074 R)
• M79: 33,127,252 km (0.088 R)
• M80: 33,963,055 km (0.045 R)
• M81: 34,120,582 km (0.036 R)
• M82: 34,225,749 km (0.115 R)
• M83: 34,647,465 km (0.071 R)
• M84: 35,283,107 km (0.085 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 40.4

Radius: 7.8

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 12.36 AU - 18.24 AU

Year: 21231 Days

Day: 16.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 85,278,118 km

• M1: 127,757 km (0.087 R)
• M2: 298,149 km (0.101 R)
• M3: 440,566 km (0.082 R)
• M4: 1,054,067 km (0.036 R)
• M5: 1,202,617 km (0.1 R)
• M6: 2,100,354 km (0.052 R)
• M7: 2,231,551 km (0.111 R)
• M8: 2,326,995 km (0.092 R)
• M9: 3,754,607 km (0.062 R)
• M10: 4,170,190 km (0.111 R)
• M11: 4,264,587 km (0.055 R)
• M12: 5,400,034 km (0.116 R)
• M13: 7,208,972 km (0.109 R)
• M14: 7,407,937 km (0.081 R)
• M15: 7,522,529 km (0.112 R)
• M16: 7,898,768 km (0.084 R)
• M17: 8,400,070 km (0.049 R)
• M18: 8,669,795 km (0.103 R)
• M19: 9,495,575 km (0.075 R)
• M20: 9,682,423 km (0.092 R)
• M21: 10,282,460 km (0.075 R)
• M22: 10,797,077 km (0.118 R)
• M23: 11,650,981 km (0.047 R)
• M24: 11,884,653 km (0.075 R)
• M25: 12,018,843 km (0.084 R)
• M26: 12,869,007 km (0.065 R)
• M27: 13,145,165 km (0.071 R)
• M28: 14,056,216 km (0.103 R)
• M29: 14,951,110 km (0.106 R)
• M30: 15,096,071 km (0.079 R)
• M31: 16,234,959 km (0.079 R)
• M32: 16,383,959 km (0.094 R)
• M33: 17,591,962 km (0.112 R)
• M34: 18,945,822 km (0.036 R)
• M35: 19,063,406 km (0.058 R)
• M36: 19,853,582 km (0.073 R)
• M37: 19,933,168 km (0.085 R)
• M38: 20,092,789 km (0.096 R)
• M39: 20,493,412 km (0.08 R)
• M40: 20,654,529 km (0.116 R)
• M41: 21,834,408 km (0.119 R)
• M42: 21,998,965 km (0.04 R)
• M43: 22,163,822 km (0.098 R)
• M44: 22,619,348 km (0.119 R)
• M45: 24,429,631 km (0.063 R)
• M46: 24,857,182 km (0.101 R)
• M47: 24,943,051 km (0.104 R)
• M48: 25,416,828 km (0.096 R)
• M49: 26,111,261 km (0.093 R)
• M50: 28,950,928 km (0.044 R)
• M51: 29,494,267 km (0.076 R)
• M52: 30,590,820 km (0.09 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 715.6

Radius: 4.5

Gravity: 35.34 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 13.89 AU - 18.59 AU

Year: 23218 Days

Day: 23.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 60.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 85,278,118 km

• M1: 86,019 km (0.04 R)
• M2: 244,892 km (0.047 R)
• M3: 392,844 km (0.118 R)
• M4: 455,226 km (0.099 R)
• M5: 521,049 km (0.117 R)
• M6: 590,313 km (0.097 R)
• M7: 1,277,267 km (0.057 R)
• M8: 1,371,663 km (0.075 R)
• M9: 1,634,357 km (0.063 R)
• M10: 1,841,550 km (0.102 R)
• M11: 1,984,266 km (0.096 R)
• M12: 2,242,921 km (0.111 R)
• M13: 2,512,047 km (0.088 R)
• M14: 2,710,564 km (0.06 R)
• M15: 2,832,187 km (0.114 R)
• M16: 3,822,226 km (0.047 R)
• M17: 4,004,436 km (0.099 R)
• M18: 4,143,113 km (0.117 R)
• M19: 4,189,638 km (0.119 R)
• M20: 5,006,891 km (0.099 R)
• M21: 5,459,125 km (0.101 R)
• M22: 5,767,896 km (0.034 R)
• M23: 6,348,485 km (0.094 R)
• M24: 6,510,051 km (0.085 R)
• M25: 7,507,569 km (0.104 R)
• M26: 7,908,342 km (0.102 R)
• M27: 8,730,382 km (0.093 R)
• M28: 10,901,047 km (0.074 R)
• M29: 10,965,374 km (0.082 R)
• M30: 11,029,851 km (0.06 R)
• M31: 11,354,179 km (0.082 R)
• M32: 11,484,928 km (0.096 R)
• M33: 11,813,594 km (0.119 R)
• M34: 13,296,259 km (0.11 R)
• M35: 13,780,208 km (0.072 R)
• M36: 14,694,251 km (0.1 R)
• M37: 14,907,877 km (0.066 R)
• M38: 15,845,855 km (0.096 R)
• M39: 15,918,709 km (0.096 R)
• M40: 16,138,169 km (0.062 R)
• M41: 16,211,622 km (0.103 R)
• M42: 20,812,205 km (0.115 R)
• M43: 21,212,679 km (0.057 R)
• M44: 21,534,913 km (0.078 R)
• M45: 22,922,134 km (0.1 R)
• M46: 23,418,499 km (0.119 R)
• M47: 23,751,504 km (0.06 R)
• M48: 25,354,296 km (0.047 R)
• M49: 25,439,716 km (0.092 R)
• M50: 30,730,544 km (0.112 R)
• M51: 30,912,605 km (0.1 R)
• M52: 31,920,146 km (0.036 R)
• M53: 35,007,099 km (0.111 R)
• M54: 35,102,093 km (0.101 R)
• M55: 36,249,060 km (0.071 R)
• M56: 37,020,387 km (0.087 R)
• M57: 37,505,383 km (0.101 R)
• M58: 38,677,632 km (0.052 R)
• M59: 40,458,445 km (0.101 R)
• M60: 41,660,464 km (0.105 R)
• M61: 43,077,604 km (0.077 R)
• M62: 44,304,756 km (0.074 R)
• M63: 44,819,522 km (0.059 R)
• M64: 46,166,950 km (0.044 R)
• M65: 46,271,220 km (0.104 R)
• M66: 46,688,747 km (0.09 R)
• M67: 47,212,490 km (0.08 R)
• M68: 47,527,692 km (0.074 R)
• M69: 50,288,521 km (0.108 R)
• M70: 50,717,867 km (0.084 R)
• M71: 50,825,428 km (0.072 R)
• M72: 51,256,270 km (0.114 R)
• M73: 51,472,139 km (0.039 R)
• M74: 52,556,126 km (0.108 R)
• M75: 55,409,406 km (0.106 R)
• M76: 58,650,743 km (0.066 R)
• M77: 58,763,540 km (0.116 R)
• M78: 58,989,582 km (0.092 R)
• M79: 60,009,839 km (0.108 R)
• M80: 61,608,592 km (0.082 R)
• M81: 68,854,814 km (0.076 R)
• M82: 70,288,111 km (0.095 R)
• M83: 72,335,358 km (0.117 R)
• M84: 72,577,557 km (0.085 R)
• M85: 73,548,746 km (0.113 R)
• M86: 76,981,867 km (0.066 R)
• M87: 79,715,769 km (0.11 R)
• M88: 79,965,896 km (0.113 R)
• M89: 81,220,424 km (0.065 R)
• M90: 82,607,795 km (0.052 R)
• M91: 82,987,474 km (0.084 R)
• M92: 84,512,325 km (0.08 R)

Kuiper Belt

Range: 30.9 - 49.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 346 - 14,567 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit