ANT

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Antihelion Source

The Antihelion Source (ANT) is a large, roughly oval area around α= 30◦ by δ= 15◦in size, centred about 12◦east of the solar opposition point on the ecliptic, hence its name.
It is not a true shower at all (hence it has no IAU shower number), but is rather a region of sky in which a number of variably, if weakly, active minor showers have their radiants.
Until 2006, attempts were made to define specific showers within this complex, but this often proved very difficult for visual observers to achieve. IMO video results have shown why, because even instrumentally, it was impossible to define distinct and constantly observable radiants for many of the showers here!

The ANT should produce ZHRs between 2 and 4 with insignificant variations. There may be a rather slow increase towards end-May
followed by a decrease into July. The radiant area drifts from south-east Virgo through Libra in April, then across the northern part of Scorpius to southern Ophiuchus in May, and on into Sagittarius for much of June.

Credit: IMO