Alpha Monocerotids

The Alpha Monocerotids is a meteor shower with the international acronym AMO active in November, not to be confused with the December Monocerotids, international acronym MON. The swarm is visible every year from 15 to 25 November; its peak occurs on 21 or 22 November. The speed of its meteors is 65 km/s. Normally it has a low Zenithal Hourly Rate (ZHR), but occasionally it produces remarkable meteor storms that last less than an hour: such outbursts were observed in 1925, 1935, 1985, and 1995. Peter Jenniskens predicted the 1995 return based on the hypothesis that these outbursts were caused by the dust trail of a long period comet occasionally wandering in Earth's path due to planetary perturbations. During observations in southern Spain, assisted by a team of observers of the Dutch Meteor Society, Jenniskens confirmed that the meteoroids were moving in a long-period comet orbit. The outburst of 1995 allowed researchers to determine the exact radiant of the swarm and the solar longitude of its peak as well as to confirm the brevity of Alpha Monocerotids outbursts as less than one hour. The parent body, probably a long-period comet, is unknown.^[1]

References

↑ Jenniskens, P.; Betlem, H.; De Lignie, M.; Langbroek, M. (1997). "The Detection of a Dust Trail in the Orbit of an Earth-threatening Long-Period Comet". Astrophysical Journal. 479: 441. Bibcode:1997ApJ...479..441J. doi:10.1086/303853.

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Meteor showers

By name	Andromedids Antihelion Source Aquariids Eta Aquariids Kappa Aquariids North Delta Aquariids North Iota Aquariids South Iota Aquariids Southern Delta Aquariids Tau Aquariids Aquilids South June Aquilids Arietids Daytime Eps. Arietids Daytime May Arietids Aurigids Alpha Aurigids Delta Aurigids Nov. Iota Aurigids Bootids (June Bootids) Canis-Minorids Cancrids (Delta Cancrids) Capricornids Alpha Capricornids Daytime Capri.-Sagitt. Carinids (Eta Carinids) Cassiopeids (Beta Cassiopeids) Centaurids Alpha Centaurids Omicron Centaurids Cetids Omega Cetids Pi Cetids Coma Berenicids Cygnids (Kappa Cygnids) Doradids (Gamma Doradids) Draconids Eridanids (Eta Eridanids) Geminids (Epsilon Geminids) Herculids (Tau Herculids) Hydrids (Sigma Hydrids) Leonids Leonis Minorids (Dec. Leonis Minorids) Lyrids Eta Lyrids June Lyrids Monocerotids Alpha Monocerotids Normids (Gamma Normids) Orionids Pegasids Perseids Daytime Zeta Perseids September Epsilon Perseids Zeta Perseids Phoenicids (July Phoenicids) Piscis Austrinids Puppids (Pi Puppids) Puppid-Velids Quadrantids Scorpiids Alpha Scorpiids North Omega Scorpiids South Omega Scorpiids Serpentids (Kappa Serpentids) Sextantids (Daytime Sextantids) Taurids Beta Taurids Daytime Beta Taurids Northern Taurids Southern Taurids Theta Centaurids Ursids Virginids Alpha Virginids Gamma Virginids Eta Virginids Theta Virginids Iota Virginids Lambda Virginids Mu Virginids Pi Virginids Psi Virginids March Virginids

By peak date	January 4 February 8 February 10 March 14 April 17 April 22–23 April 26 May 6 June 7 June 27 July 28–29 July 13 July 30 July 31 – August 1 August 13 September 1 October 8 October 10 October 21 October 24 November 9 November 12 November 18 November 21–22 December 5–6 December 13–14 December 15 December 22

Related topics	American Meteor Society Earth-grazing fireball International Meteor Organization Meteor procession North American Meteor Network Population index Radiant Zenithal Hourly Rate

See also List of meteor showers

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Alpha Monocerotids

See also

References

External links