The eta Aquariids meteor shower takes place within the boundaries constellation of the Aquarius. The Solar Longitude, mistakenly known as Lambda Omicron is 46 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 1P/Halley. The coordinates can also be determined by the Right Ascension (338.1) and the Declination (-0.8).
The speed/velocity of the Meteor Shower particles is 66 km/s.
|Solar Longitude / λ ☉||46 °|