The Theta Virginids meteor shower takes place within the boundaries constellation of the Virgo. The meteor showers occurs between March 10-April 21 with the peak occuring on the Mar. 20/21 every year The Solar Longitude, mistakenly known as Lambda Omicron is 39.5 degrees. This value sometimes expressed as S.L. or λ ☉ 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 2011 HP4. The closest star to the radiant point of the meteor shower is Caphir. The coordinates can also be determined by the Right Ascension (196.9) and the Declination (-1).
The speed/velocity of the Meteor Shower particles is 15 km/s.
|Associated Asteroid||2011 HP4|
|Closest Star to Radiant Point||Caphir|
|Max Activity Date||30 Mar|
|Activity Period||March 10-April 21|
|Solar Longitude / λ ☉||39.5 °|