The radiant (the area of the sky where meteors appear to shoot from) positions and rates listed below are exact for Saturday night/Sunday morning April 23/24. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. A planisphere or computer planetarium program is also useful in showing the sky at any time of night on any date of the year. Activity from each radiant is best seen when it is positioned highest in the sky, either due north or south along the meridian, depending on your latitude. It must be remembered that meteor activity is rarely seen at the radiant position. Rather they shoot outwards from the radiant so it is best to center your field of view so that the radiant lies at the edge and not the center. Viewing there will allow you to easily trace the path of each meteor back to the radiant (if it is a shower member) or in another direction if it is a sporadic. Meteor activity is not seen from radiants that are located far below the horizon. The positions below are listed in a west to east manner in order of right ascension (celestial longitude). The positions listed first are located further west therefore are accessible earlier in the night while those listed further down the list rise later in the night.
These sources of meteoric activity are expected to be active this week.
Detailed shower descriptions will continue next week when viewing conditions are much more favorable.
|SHOWER||DATE OF MAXIMUM ACTIVITY||CELESTIAL POSITION||ENTRY VELOCITY||CULMINATION||HOURLY RATE||CLASS|
|RA (RA in Deg.) DEC||Km/Sec||Local Summer Time||North-South|
|pi Puppids (PPU)||Apr 23||07:22 (111) -45||18||19:00||<1 – <1||III|
|sigma Leonids (SLE)||Apr 15||13:46 (206) +03||19||01:00||<1 – <1||IV|
|Anthelions (ANT)||–||15:06 (226) -18||30||02:00||1 – 1||II|
|Lyrids (LYR)||Apr 22||18:16 (274) +33||46||05:00||1 – <1||I|
|April rho Cygnids (AEC)||Apr 22||21:04 (316) +45||42||08:00||1 – <1||IV|
|eta Aquariids (ETA)||May 07||22:03 (330) -04||67||09:00||1 – 1||I|