🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.51 AU - 0.65 AU

Year: 281 Days

Day: 12.3 Hours

Environment

Temp: -121 °C

Axial Tilt: 29.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,186,256 km

• M1: 36,801 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.7

Radius: 8.3

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.7 AU - 0.88 AU

Year: 446 Days

Day: 6.3 Hours

Environment

Temp: -144 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 65,186,256 km

• M1: 103,971 km (0.102 R)
• M2: 162,314 km (0.088 R)
• M3: 220,657 km (0.055 R)
• M4: 303,085 km (0.11 R)
• M5: 377,136 km (0.114 R)
• M6: 449,691 km (0.088 R)
• M7: 524,789 km (0.082 R)
• M8: 588,368 km (0.111 R)
• M9: 675,285 km (0.111 R)
• M10: 755,918 km (0.051 R)
• M11: 825,182 km (0.06 R)
• M12: 950,994 km (0.096 R)
• M13: 1,046,736 km (0.12 R)
• M14: 1,234,930 km (0.041 R)
• M15: 1,317,808 km (0.097 R)
• M16: 1,470,697 km (0.086 R)
• M17: 1,587,084 km (0.061 R)
• M18: 1,711,400 km (0.071 R)
• M19: 1,985,014 km (0.114 R)
• M20: 2,108,881 km (0.109 R)
• M21: 2,198,042 km (0.036 R)
• M22: 2,267,305 km (0.073 R)
• M23: 2,380,551 km (0.066 R)
• M24: 2,435,154 km (0.114 R)
• M25: 2,506,812 km (0.103 R)
• M26: 2,618,412 km (0.047 R)
• M27: 2,714,603 km (0.107 R)
• M28: 2,869,736 km (0.104 R)
• M29: 2,933,913 km (0.094 R)
• M30: 3,010,208 km (0.081 R)
• M31: 3,117,021 km (0.115 R)
• M32: 3,201,095 km (0.081 R)
• M33: 3,316,286 km (0.027 R)
• M34: 3,494,756 km (0.054 R)
• M35: 3,569,704 km (0.06 R)
• M36: 3,651,235 km (0.119 R)
• M37: 3,810,108 km (0.084 R)
• M38: 3,867,853 km (0.074 R)
• M39: 3,984,240 km (0.049 R)
• M40: 4,049,315 km (0.092 R)
• M41: 4,280,145 km (0.088 R)
• M42: 4,427,499 km (0.08 R)
• M43: 4,535,807 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.6

Radius: 10.4

Gravity: 8.97 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.85 AU - 1.11 AU

Year: 617 Days

Day: 9.2 Hours

Environment

Temp: -148 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 65,186,256 km

• M1: 130,150 km (0.067 R)
• M2: 367,861 km (0.088 R)
• M3: 477,666 km (0.1 R)
• M4: 586,274 km (0.108 R)
• M5: 714,479 km (0.117 R)
• M6: 793,168 km (0.049 R)
• M7: 880,683 km (0.1 R)
• M8: 954,285 km (0.076 R)
• M9: 1,072,018 km (0.107 R)
• M10: 1,157,588 km (0.114 R)
• M11: 1,245,552 km (0.097 R)
• M12: 1,381,836 km (0.052 R)
• M13: 1,475,633 km (0.035 R)
• M14: 1,627,326 km (0.093 R)
• M15: 1,712,447 km (0.111 R)
• M16: 1,799,064 km (0.061 R)
• M17: 1,872,367 km (0.082 R)
• M18: 1,939,237 km (0.096 R)
• M19: 2,014,485 km (0.094 R)
• M20: 2,113,968 km (0.064 R)
• M21: 2,262,219 km (0.098 R)
• M22: 2,405,983 km (0.037 R)
• M23: 2,644,142 km (0.045 R)
• M24: 2,778,780 km (0.072 R)
• M25: 2,907,285 km (0.115 R)
• M26: 2,993,902 km (0.094 R)
• M27: 3,376,723 km (0.088 R)
• M28: 3,459,002 km (0.073 R)
• M29: 3,794,251 km (0.094 R)
• M30: 3,956,265 km (0.106 R)
• M31: 4,120,524 km (0.061 R)
• M32: 4,228,085 km (0.116 R)
• M33: 4,316,796 km (0.101 R)
• M34: 4,586,820 km (0.035 R)
• M35: 4,708,443 km (0.052 R)
• M36: 5,059,400 km (0.083 R)
• M37: 5,174,740 km (0.119 R)
• M38: 5,333,314 km (0.08 R)
• M39: 5,720,922 km (0.089 R)
• M40: 5,852,119 km (0.097 R)
• M41: 5,929,162 km (0.065 R)
• M42: 6,162,235 km (0.118 R)
• M43: 6,375,712 km (0.114 R)
• M44: 6,523,215 km (0.075 R)
• M45: 6,614,619 km (0.119 R)
• M46: 6,786,956 km (0.118 R)
• M47: 6,937,601 km (0.12 R)
• M48: 7,054,288 km (0.112 R)
• M49: 7,195,059 km (0.052 R)
• M50: 7,301,423 km (0.07 R)
• M51: 7,539,433 km (0.115 R)
• M52: 7,889,044 km (0.113 R)
• M53: 8,072,002 km (0.079 R)
• M54: 8,293,407 km (0.12 R)
• M55: 8,367,607 km (0.046 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589.1

Radius: 12.9

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 3.84 AU - 5.26 AU

Year: 6171 Days

Day: 8.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 65,186,256 km

• M1: 172,038 km (0.086 R)
• M2: 267,780 km (0.096 R)
• M3: 366,515 km (0.027 R)
• M4: 474,225 km (0.117 R)
• M5: 769,382 km (0.095 R)
• M6: 918,381 km (0.114 R)
• M7: 1,004,101 km (0.105 R)
• M8: 1,092,962 km (0.075 R)
• M9: 1,231,490 km (0.073 R)
• M10: 1,493,136 km (0.076 R)
• M11: 1,648,569 km (0.07 R)
• M12: 1,773,184 km (0.112 R)
• M13: 1,919,789 km (0.068 R)
• M14: 2,108,881 km (0.112 R)
• M15: 2,384,141 km (0.098 R)
• M16: 2,692,313 km (0.114 R)
• M17: 3,692,973 km (0.036 R)
• M18: 3,977,957 km (0.09 R)
• M19: 4,419,121 km (0.061 R)
• M20: 5,295,166 km (0.047 R)
• M21: 5,590,024 km (0.075 R)
• M22: 5,671,405 km (0.063 R)
• M23: 5,973,293 km (0.083 R)
• M24: 6,535,482 km (0.11 R)
• M25: 6,736,392 km (0.098 R)
• M26: 7,351,239 km (0.095 R)
• M27: 7,680,654 km (0.116 R)
• M28: 8,353,844 km (0.074 R)
• M29: 9,014,169 km (0.063 R)
• M30: 10,019,467 km (0.06 R)
• M31: 10,118,650 km (0.107 R)
• M32: 10,218,283 km (0.079 R)
• M33: 10,720,782 km (0.107 R)
• M34: 10,890,127 km (0.072 R)
• M35: 11,197,101 km (0.064 R)
• M36: 11,680,452 km (0.055 R)
• M37: 11,959,751 km (0.108 R)
• M38: 12,524,932 km (0.1 R)
• M39: 14,049,783 km (0.103 R)
• M40: 14,198,035 km (0.099 R)
• M41: 14,496,183 km (0.07 R)
• M42: 14,646,080 km (0.028 R)
• M43: 15,709,422 km (0.116 R)
• M44: 16,679,863 km (0.094 R)
• M45: 16,797,597 km (0.111 R)
• M46: 16,915,630 km (0.067 R)
• M47: 18,232,240 km (0.119 R)
• M48: 18,394,105 km (0.032 R)
• M49: 18,637,800 km (0.092 R)
• M50: 18,719,182 km (0.106 R)
• M51: 18,923,383 km (0.042 R)
• M52: 20,457,210 km (0.099 R)
• M53: 20,583,321 km (0.114 R)
• M54: 20,920,813 km (0.03 R)
• M55: 21,217,765 km (0.097 R)
• M56: 21,601,484 km (0.119 R)
• M57: 21,944,512 km (0.117 R)
• M58: 22,375,952 km (0.037 R)
• M59: 23,686,728 km (0.115 R)
• M60: 25,157,425 km (0.082 R)
• M61: 25,699,418 km (0.111 R)
• M62: 25,835,552 km (0.087 R)
• M63: 26,154,196 km (0.093 R)
• M64: 26,703,370 km (0.107 R)
• M65: 27,071,530 km (0.094 R)
• M66: 28,139,509 km (0.078 R)
• M67: 28,233,008 km (0.079 R)
• M68: 28,373,480 km (0.1 R)
• M69: 29,173,978 km (0.042 R)
• M70: 29,315,947 km (0.098 R)
• M71: 29,410,792 km (0.097 R)
• M72: 29,695,925 km (0.108 R)
• M73: 30,125,271 km (0.105 R)
• M74: 31,183,227 km (0.111 R)
• M75: 31,863,000 km (0.08 R)
• M76: 31,960,388 km (0.035 R)
• M77: 32,106,845 km (0.084 R)
• M78: 32,351,437 km (0.074 R)
• M79: 32,842,417 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.1

Radius: 8.6

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.98 AU - 5.98 AU

Year: 7066 Days

Day: 9 Hours

Environment

Temp: -226 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 65,186,256 km

• M1: 148,102 km (0.057 R)
• M2: 216,917 km (0.06 R)
• M3: 536,308 km (0.114 R)
• M4: 611,107 km (0.111 R)
• M5: 808,427 km (0.063 R)
• M6: 1,094,009 km (0.025 R)
• M7: 1,263,055 km (0.097 R)
• M8: 1,395,599 km (0.085 R)
• M9: 1,610,870 km (0.114 R)
• M10: 1,690,456 km (0.067 R)
• M11: 1,820,606 km (0.041 R)
• M12: 1,903,633 km (0.104 R)
• M13: 2,195,648 km (0.082 R)
• M14: 2,465,074 km (0.09 R)
• M15: 3,174,766 km (0.066 R)
• M16: 3,275,296 km (0.046 R)
• M17: 3,625,205 km (0.06 R)
• M18: 4,052,307 km (0.094 R)
• M19: 4,316,198 km (0.09 R)
• M20: 5,403,325 km (0.06 R)
• M21: 5,816,515 km (0.068 R)
• M22: 5,939,933 km (0.1 R)
• M23: 6,039,416 km (0.057 R)
• M24: 6,114,364 km (0.109 R)
• M25: 6,239,877 km (0.113 R)
• M26: 6,341,005 km (0.096 R)
• M27: 6,442,582 km (0.062 R)
• M28: 6,880,754 km (0.097 R)
• M29: 7,515,498 km (0.074 R)
• M30: 7,839,976 km (0.098 R)
• M31: 7,894,429 km (0.068 R)
• M32: 8,058,688 km (0.098 R)
• M33: 9,211,788 km (0.117 R)
• M34: 10,087,833 km (0.109 R)
• M35: 10,626,236 km (0.117 R)
• M36: 11,081,911 km (0.119 R)
• M37: 11,451,119 km (0.095 R)
• M38: 11,513,052 km (0.08 R)
• M39: 11,606,252 km (0.078 R)
• M40: 11,761,983 km (0.106 R)
• M41: 11,949,728 km (0.109 R)
• M42: 12,296,646 km (0.081 R)
• M43: 12,935,877 km (0.105 R)
• M44: 13,684,465 km (0.027 R)
• M45: 13,815,962 km (0.105 R)
• M46: 14,715,344 km (0.116 R)
• M47: 14,985,518 km (0.104 R)
• M48: 15,359,513 km (0.116 R)
• M49: 15,909,135 km (0.032 R)
• M50: 15,978,249 km (0.111 R)
• M51: 17,275,712 km (0.096 R)
• M52: 17,847,176 km (0.053 R)
• M53: 17,918,983 km (0.09 R)
• M54: 18,063,045 km (0.079 R)
• M55: 18,279,813 km (0.032 R)
• M56: 18,533,830 km (0.087 R)
• M57: 19,450,416 km (0.087 R)
• M58: 19,672,718 km (0.044 R)
• M59: 20,494,609 km (0.045 R)
• M60: 21,825,133 km (0.091 R)
• M61: 23,222,825 km (0.049 R)
• M62: 23,537,280 km (0.099 R)
• M63: 23,655,612 km (0.109 R)
• M64: 24,011,655 km (0.112 R)
• M65: 24,250,114 km (0.11 R)
• M66: 24,369,493 km (0.072 R)
• M67: 24,569,057 km (0.078 R)
• M68: 24,849,403 km (0.098 R)
• M69: 24,929,737 km (0.117 R)
• M70: 25,251,821 km (0.117 R)
• M71: 25,453,779 km (0.116 R)
• M72: 25,981,410 km (0.051 R)
• M73: 26,062,791 km (0.104 R)
• M74: 26,759,020 km (0.075 R)
• M75: 26,841,299 km (0.079 R)
• M76: 26,923,727 km (0.107 R)
• M77: 27,793,788 km (0.091 R)
• M78: 27,918,852 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.3

Radius: 8.4

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 4.22 AU - 6.9 AU

Year: 8336 Days

Day: 11.2 Hours

Environment

Temp: -209 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 65,186,256 km

• M1: 111,750 km (0.118 R)
• M2: 423,512 km (0.088 R)
• M3: 799,152 km (0.049 R)
• M4: 940,073 km (0.091 R)
• M5: 1,006,794 km (0.104 R)
• M6: 1,075,309 km (0.045 R)
• M7: 1,231,938 km (0.097 R)
• M8: 1,290,730 km (0.058 R)
• M9: 1,365,529 km (0.047 R)
• M10: 1,696,440 km (0.093 R)
• M11: 1,828,984 km (0.084 R)
• M12: 1,999,675 km (0.095 R)
• M13: 2,069,387 km (0.105 R)
• M14: 2,122,345 km (0.119 R)
• M15: 2,580,563 km (0.117 R)
• M16: 2,830,990 km (0.063 R)
• M17: 2,969,069 km (0.087 R)
• M18: 3,109,541 km (0.106 R)
• M19: 3,692,823 km (0.109 R)
• M20: 3,800,684 km (0.088 R)
• M21: 4,242,147 km (0.082 R)
• M22: 4,423,310 km (0.083 R)
• M23: 4,560,940 km (0.118 R)
• M24: 5,149,458 km (0.106 R)
• M25: 5,886,975 km (0.066 R)
• M26: 6,422,985 km (0.109 R)
• M27: 6,605,045 km (0.117 R)
• M28: 6,815,380 km (0.078 R)
• M29: 7,027,809 km (0.058 R)
• M30: 7,161,699 km (0.1 R)
• M31: 7,486,625 km (0.1 R)
• M32: 7,927,191 km (0.082 R)
• M33: 8,150,690 km (0.094 R)
• M34: 8,263,338 km (0.053 R)
• M35: 9,152,847 km (0.113 R)
• M36: 9,387,416 km (0.071 R)
• M37: 9,623,930 km (0.066 R)
• M38: 9,713,091 km (0.115 R)
• M39: 10,193,449 km (0.119 R)
• M40: 10,497,582 km (0.093 R)
• M41: 10,558,767 km (0.117 R)
• M42: 10,866,640 km (0.069 R)
• M43: 11,271,152 km (0.12 R)
• M44: 11,775,746 km (0.089 R)
• M45: 11,935,068 km (0.114 R)
• M46: 12,094,988 km (0.056 R)
• M47: 12,191,329 km (0.12 R)
• M48: 12,287,820 km (0.113 R)
• M49: 12,774,461 km (0.071 R)
• M50: 13,102,380 km (0.106 R)
• M51: 13,300,597 km (0.102 R)
• M52: 13,433,141 km (0.051 R)
• M53: 13,499,712 km (0.097 R)
• M54: 14,001,762 km (0.088 R)
• M55: 14,238,127 km (0.109 R)
• M56: 14,612,271 km (0.098 R)
• M57: 15,579,272 km (0.072 R)
• M58: 17,068,219 km (0.037 R)
• M59: 17,212,432 km (0.094 R)
• M60: 18,417,143 km (0.083 R)
• M61: 18,491,045 km (0.109 R)
• M62: 18,862,048 km (0.098 R)
• M63: 19,011,047 km (0.115 R)
• M64: 20,065,413 km (0.097 R)
• M65: 20,561,479 km (0.041 R)
• M66: 20,676,520 km (0.083 R)
• M67: 21,061,435 km (0.117 R)
• M68: 21,332,357 km (0.092 R)
• M69: 21,838,596 km (0.073 R)
• M70: 21,956,031 km (0.077 R)
• M71: 22,073,615 km (0.114 R)
• M72: 22,152,004 km (0.064 R)
• M73: 23,460,836 km (0.104 R)
• M74: 23,741,631 km (0.089 R)
• M75: 24,225,730 km (0.113 R)
• M76: 24,509,517 km (0.082 R)
• M77: 24,794,501 km (0.042 R)
• M78: 25,121,522 km (0.069 R)
• M79: 25,491,178 km (0.12 R)
• M80: 25,986,796 km (0.092 R)
• M81: 26,235,727 km (0.104 R)
• M82: 27,661,693 km (0.086 R)
• M83: 27,788,702 km (0.067 R)
• M84: 28,640,512 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 578.8

Radius: 7.7

Gravity: 9.76 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 7.37 AU - 10.69 AU

Year: 17253 Days

Day: 24 Hours

Environment

Temp: -231 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 65,186,256 km

• M1: 368,609 km (0.114 R)
• M2: 559,047 km (0.099 R)
• M3: 1,275,471 km (0.111 R)
• M4: 1,327,232 km (0.075 R)
• M5: 1,513,631 km (0.113 R)
• M6: 2,092,725 km (0.051 R)
• M7: 2,700,690 km (0.074 R)
• M8: 2,903,545 km (0.047 R)
• M9: 4,779,502 km (0.101 R)
• M10: 5,275,120 km (0.1 R)
• M11: 6,359,705 km (0.08 R)
• M12: 7,510,860 km (0.118 R)
• M13: 7,605,705 km (0.082 R)
• M14: 7,796,742 km (0.112 R)
• M15: 7,892,784 km (0.03 R)
• M16: 8,134,683 km (0.113 R)
• M17: 8,183,303 km (0.086 R)
• M18: 8,625,664 km (0.111 R)
• M19: 9,278,509 km (0.064 R)
• M20: 9,431,398 km (0.098 R)
• M21: 10,051,331 km (0.113 R)
• M22: 10,524,958 km (0.111 R)
• M23: 10,844,798 km (0.101 R)
• M24: 12,829,663 km (0.072 R)
• M25: 12,943,208 km (0.11 R)
• M26: 13,171,345 km (0.117 R)
• M27: 14,155,250 km (0.07 R)
• M28: 15,887,892 km (0.096 R)
• M29: 16,377,526 km (0.12 R)
• M30: 16,748,080 km (0.115 R)
• M31: 18,257,523 km (0.12 R)
• M32: 18,385,279 km (0.1 R)
• M33: 18,513,335 km (0.045 R)
• M34: 18,834,821 km (0.102 R)
• M35: 19,352,878 km (0.098 R)
• M36: 21,606,720 km (0.099 R)
• M37: 22,080,945 km (0.115 R)
• M38: 23,108,682 km (0.102 R)
• M39: 23,872,379 km (0.037 R)
• M40: 24,362,612 km (0.074 R)
• M41: 25,424,158 km (0.105 R)
• M42: 25,924,862 km (0.114 R)
• M43: 26,790,585 km (0.08 R)
• M44: 28,180,648 km (0.107 R)
• M45: 31,259,223 km (0.109 R)
• M46: 31,872,126 km (0.093 R)
• M47: 32,180,148 km (0.041 R)
• M48: 32,799,184 km (0.11 R)
• M49: 33,422,109 km (0.077 R)
• M50: 33,970,385 km (0.055 R)
• M51: 35,393,809 km (0.119 R)
• M52: 37,890,448 km (0.084 R)
• M53: 40,110,929 km (0.12 R)
• M54: 40,193,956 km (0.118 R)
• M55: 40,693,463 km (0.096 R)
• M56: 40,860,414 km (0.079 R)
• M57: 41,027,665 km (0.045 R)
• M58: 43,477,180 km (0.105 R)
• M59: 43,904,432 km (0.104 R)
• M60: 44,075,572 km (0.035 R)
• M61: 45,366,901 km (0.101 R)
• M62: 45,973,819 km (0.075 R)
• M63: 47,546,691 km (0.095 R)
• M64: 48,605,096 km (0.087 R)
• M65: 49,582,120 km (0.1 R)
• M66: 49,938,911 km (0.118 R)
• M67: 50,117,680 km (0.071 R)
• M68: 51,736,030 km (0.075 R)
• M69: 51,916,894 km (0.03 R)
• M70: 53,006,565 km (0.105 R)
• M71: 53,828,755 km (0.073 R)
• M72: 55,116,194 km (0.091 R)
• M73: 55,485,850 km (0.072 R)
• M74: 55,671,052 km (0.114 R)
• M75: 57,533,695 km (0.113 R)
• M76: 59,227,592 km (0.082 R)
• M77: 59,511,529 km (0.084 R)
• M78: 59,795,914 km (0.108 R)
• M79: 61,895,072 km (0.11 R)
• M80: 62,857,136 km (0.07 R)
• M81: 62,953,626 km (0.091 R)
• M82: 63,533,468 km (0.055 R)
• M83: 64,991,149 km (0.106 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 519 - 16,423 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit