Sigma Hydrids
meteor shower
Sigma Hydrids are a faint, minor (Class II) meteor shower that peak around 7 December. The ZHR is 3-7 and population index is 3. They are active from November 22 to January 4.
Sigma hydrids were discovered by Richard E. McCrosky and Annette Posen.
2023
Long-period comet C/2023 P1 (Nishimura) has been suggested to be the parent body of the meteor shower and came to perihelion (closest approach to the Sun) in September 2023. There is a chance of increased activity during the 2023 meteor shower if Earth passes through older meteoroid streams (such as 1591) that have had time to spread out over the comets orbit.
References
P. Clay Sherrod; Thomas L. Koed (2012). A Complete Manual of Amateur Astronomy: Tools and Techniques for Astronomical Observations. Courier Corporation. p.
“Sigma Hydrids” enters the record as meteor shower. Crown Archives preserves that source wording while asking what Sigma, Hydrids and meteor can confirm, complicate or overturn.
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This entry incorporates text from “Sigma Hydrids” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.