The Northern Delta Leonids meteor shower takes place within the boundaries constellation of Leo. The Solar Longitude (Abbrev: S.L., λ ☉) is 338.8 degrees, this value is the the date of maximum activity. It is measured as a degree with zero degree indicating spring equinox (roughly March 21st/22nd). 90 is the Summer Solstice, 180 is the Autumn Equinox and 270 is the Winter Solstice. This degree is independent of the calender. AMS .
The source of the meteor shower is believed to be Asteroid 1999 RD32. The closest star to the radiant point of the meteor shower is Zosma. The coordinates can also be determined by the Right Ascension (159.7) and the Declination (18.8).
The speed/velocity of the Meteor Shower particles is 20 km/s.
|Associated Asteroid||1999 RD32?|
|Closest Star to Radiant Point||Zosma|
|Peak Activity Date||27th February|
|Solar Longitude / λ ☉||338.8 °|
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