The Solar Longitude (Abbrev: S.L., λ ☉) is 63 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 closest star to the radiant point of the meteor shower is Deneb al Okab Borealis. The coordinates can also be determined by the Right Ascension (294.1) and the Declination (20.4).
The speed/velocity of the Meteor Shower particles is 32 km/s.
|Closest Star to Radiant Point||Deneb al Okab Borealis|
|Max Activity Date||17 May|
|Activity Period||May 4-27|
|Solar Longitude / λ ☉||63 °|