The complete history of this daylight stream
is contained in the details accumulated during the two sessions of the Radio
Meteor Project during the 1960's. Zdenek Sekanina conducted the surveys and was
able to isolate this stream in the two sets of data.
During the 1961-1965 survey, 26 meteors were
detected in the period of January 13 to February 28. The indicated nodal passage
was February 2.7 from an average radiant of RA=299.0 deg, DECL=-15.2 deg.
Sekanina showed that a good probability existed that this stream was a twin
branch of his Scorpiid-Sagittariid branch of June (see the Theta Ophiuchids of
June), with the D-criterion being given as 0.149. He also suggested a possible
relationship to the Apollo asteroid Adonis, with the D-criterion being 0.318.
The 1968-1969 survey revealed 29 meteors
during the period of January 15 to February 14. The nodal passage came on
January 29.6 (Solar Longitude=309.1 deg), at which time the average radiant was
RA=298.9 deg, DECL=-14.2 deg. The resulting orbit made the identification with
the June stream seem more plausible (D-criterion of 0.119) and the suspected
identification with Adonis was also strengthened (D-criterion of 0.199).
The radiant catalog of the British Meteor
Society gives the maximum hourly rate as 15.
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