午间涨跌停股分析：59只涨停股、11只跌停股，航天系概念活跃，中国卫通3天2板，航天信息、航天晨光涨停

Group 1 - A-shares saw significant activity with 59 stocks hitting the daily limit up and 11 stocks hitting the limit down on December 30 [1] - The aerospace sector was notably active, with China Satellite Communications achieving two consecutive limit ups in three days, and both Aerospace Information and Aerospace Morning Glory hitting the limit up [1] - The film and theater sector also showed strength, with Baina Qiancheng achieving two consecutive limit ups in three days, and Jinyi Film hitting the limit up [1] Group 2 - Continuous limit down stocks included Guangdao Tui and *ST Aowei, among others, facing two consecutive days of limit down [2] - Other stocks like *ST Panda and Yangzi New Materials also experienced limit down [2] Group 3 - MACD golden cross signals have formed, indicating a positive trend for certain stocks [3]