Population index

Short description: Meteor shower parameter

The population index, or r-value, indicates the magnitude distribution of a meteor shower. Values below 2.5 correspond to distributions where bright meteors are more frequent than average, while values above 3.0 mean that the share of faint meteors is larger than usual.[1] Population indices are not solely associated with meteor showers.

## References

1. ↑ Molau, Sirko (2015). "Introduction". Population index reloaded (Thesis). Harvard University. Retrieved 11 July 2023.

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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
* 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
* 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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