Quadrantids

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Template:Short description Template:Infobox meteor shower

The Quadrantids (QUA) are a meteor shower that peaks in early January and whose radiant lies in the constellation Boötes. The zenithal hourly rate (ZHR) of this shower can be as high as that of two other reliably rich meteor showers, the Perseids in August and the Geminids in December,[1] yet Quadrantid meteors are not seen as often as those of the two other showers because the time frame of the peak is exceedingly narrow, sometimes lasting only hours. Moreover, the meteors are quite faint, with mean apparent magnitudes between 3.0 and 6.0.

Observations and associations

The meteor rates exceed one-half of their highest value for only about eight hours (compared to two days for the August Perseids), which means that the stream of particles that produces this shower is narrow, and apparently deriving within the last 500 years from some orbiting body.[2] The parent body of the Quadrantids was tentatively identified in 2003 by Peter Jenniskens[3] as the minor planet Template:Mpl-,[4] which in turn may be related to the comet C/1490 Y1[5] that was observed by Chinese, Japanese and Korean astronomers some 500 years ago.

File:Quadrantid meteor shower radiant point.jpeg
Radiant point of Quadrantid meteor shower, active each year in early January

The radiant point of this shower is at the northern edge of the constellation Boötes, not far from the Big Dipper. It lies between the end of the handle of the Big Dipper and the quadrilateral of stars marking the head of the constellation Draco.[2] This meteor shower is best seen in the northern hemisphere, but it can be seen partly to 50 degrees south latitude.[6]

The name comes from Quadrans Muralis, a former constellation created in 1795 by the French astronomer Jérôme Lalande that included portions of Boötes and Draco. In early January 1825, Antonio Brucalassi in Italy reported that “the atmosphere was traversed by a multitude of the luminous bodies known by the name of falling stars.”[7] They appeared to radiate from Quadrans Muralis. In 1839, Adolphe Quetelet of Brussels Observatory in Belgium and Edward C. Herrick in Connecticut[8] independently made the suggestion that the Quadrantids are an annual shower.[9]

In 1922, the International Astronomical Union (IAU) devised a list of 88 modern constellations. The list was agreed upon by the IAU at its inaugural general assembly held in Rome in May 1922.[10] It did not include a constellation Quadrans Muralis. The IAU officially adopted this list in 1930,[11] but this meteor shower still retains the name Quadrantids, for the original and now-obsolete constellation.

Year Quadrantids active during Peak of shower ZHRmax
2008 Jan. 1–5 Jan. 4 82[12]
2009 Jan. 1–5 Jan. 3 146[13]
2010 Waning gibbous Moon[14] (full Moon on Dec. 31)[15]
2011 Dec. 28 – Jan. 12 Jan. 3 90[16]
2012 Dec. 28 – Jan. 12 Jan. 4 83[17]
2013 Jan. 3 Waning gibbous Moon (full Moon on Dec. 28)[18] 137[19][20]
2014 Jan. 4 Main peak with ZHRmax=245 between Jan. 3 17:00 UT and 22:30 UT; isolated brief spike of ZHRmax=315 Jan. 4 at 18:00 UT 315[21]
2015 Waxing gibbous Moon (full Moon on Jan. 5)[22]
2016 Jan. 3 at 14 UT [23] (15 CET/9 EST)
2017 Jan. 3 at 15 UT [24] (16 CET/10 EST)
2018 Jan. 3 at 19 UT [25] (20 CET/14 EST)
2019 Jan. 4 at 2 UT [26] (21 EST on Jan. 3)
2020 Jan. 4 at 4 UT [27] (23 EST on Jan. 3)
2021
2022
2023
2024 Jan. 4 at 9 - 15 UT [28]
2025 Jan. 3 at 15 UT [29]

See also

References

Template:Reflist

External links


Template:Meteor showers

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  10. ↑ Script error: No such module "citation/CS1".
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  12. ↑ Quadrantids 2008: visual data quicklook Template:Webarchive
  13. ↑ Quadrantids 2009: visual data quicklook Template:Webarchive
  14. ↑ IMO Meteor Shower Calendar 2010: January to March
  15. ↑ Script error: No such module "citation/CS1".
  16. ↑ Quadrantids 2011: visual data quicklook
  17. ↑ Quadrantids 2012: visual data quicklook Template:Webarchive
  18. ↑ Script error: No such module "citation/CS1".
  19. ↑ Quadrantids 2013: visual data quicklook Template:Webarchive
  20. ↑ 2013 Quadrantid Shower Template:Webarchive (Chris L Peterson @ Cloudbait Observatory)
  21. ↑ Quadrantids 2014: visual data quicklook Template:Webarchive
  22. ↑ Script error: No such module "citation/CS1".
  23. ↑ Script error: No such module "citation/CS1".
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  27. ↑ Script error: No such module "citation/CS1".
  28. ↑ Script error: No such module "citation/CS1".
  29. ↑ Script error: No such module "citation/CS1".
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