The duration of this daylight shower extends from August 14 to September 12.
Maximum seems to occur around August 25 (Solar Longitude=152 deg) from an
average radiant of RA=153 deg, DECL=+21 deg. This is seems to produce a rather
weak shower, though no official rates have been determined.
History
This daylight meteor shower was detected by two radio-echo surveys conducted
during the 1960's and is significant as it may represent a recurrence of
January's Delta Cancrid stream.
C. S. Nilsson (Adelaide Observatory, South Australia) was the first to
observe this stream, when the radio program he was directing detected four
meteors during August 18-22, 1961. The radiant was determined as RA=152.7 deg,
DECL=+21.0 deg.
The second radio-echo detection of this stream was made by Zdenek Sekanina
during the 1969 session of the Radio Meteor Project. The daylight shower was
observed during August 14-September 12. The date of the nodal passage was given
as August 25.4 (Solar Longitude=151.8 deg), at which time the radiant was at
RA=155.5 deg, DECL=+20.1 deg.
Sekanina considered that a slight chance existed that this stream was
associated with the Delta Cancrids of January. The D-criterion was given as
0.285, so that it was a borderline association.