Phoenicids

{{Infobox meteor shower

| name = Phoenicids

| image = Phoenix IAU.svg

| caption = Celestial map of Phoenix

| pronounce =

| date = 1956

| parent = 289P/Blanpain

| constellation = Phoenix

| ra ={{Deg2HMS|18|sup=yes}}

| dec ={{DEC|-44|00|00}}

| month = 4–6 December

| peak = 5 December

| velocity = 11.7

| zhr = Variable

| notes =

}}

The Phoenicids are a minor meteor shower, first noticed by observers in New Zealand, Australia, the Indian Ocean, and South Africa during an outburst of approximately 100 meteors an hour that occurred during December 1956. Like other meteor showers, the Phoenicids get their name from the location of their radiant, which is in the constellation Phoenix. They are active from 29 November to 9 December, with a peak occurring around 5/6 December each year,{{Cite web |url=http://meteorshowersonline.com/showers/phoenicids.html |title=Phoenicids (PHO) |access-date=24 November 2009 |archive-url=https://web.archive.org/web/20090918150339/http://meteorshowersonline.com/showers/phoenicids.html |archive-date=18 September 2009 |url-status=live }} and are best seen from the Southern Hemisphere.

The Phoenicids appear to be associated with a stream of material from the disintegrating comet 289P/Blanpain (D/1819 W1) with a 5-year orbital period.P. Jenniskens and E. Lyytinen, METEOR SHOWERS FROM THE DEBRIS OF BROKEN COMETS: D/1819 W1 (BLANPAIN), 2003 WY25, AND THE PHOENICIDS. The Astronomical Journal, 130:1286–90, 2005 September It next comes to perihelion in 2025.

Using the formula $V\_\backslash infty\; =\; \backslash sqrt\{V\_g^2+(11.2\backslash \; \backslash mathrm\{km/s\})^2\}$, the Phoenicids (#254) have an atmospheric entry velocity of about 14.3 km/s and a geocentric velocity (before the influence of Earth's gravity) of 8.9 km/s.

A very minor meteor shower with a radiant in Phoenix also occurs in July; this shower is referred to as the July Phoenicids.{{Cite web |url=http://meteorshowersonline.com/showers/july_phoenicids.html |title=July Phoenicids (PHE) |access-date=24 November 2009 |archive-url=https://web.archive.org/web/20100124135017/http://meteorshowersonline.com/showers/july_phoenicids.html |archive-date=24 January 2010 |url-status=live }}