Celestial mechanics fix" method used anciently with numbers. Research Artwork Course notes Associations Simulations Celestial mechanics Celestial mechanics is the branch of astronomy that deals with the motions of objects in outer space. Historically, celestial mechanics applies principles of physics (classical mechanics) to astronomical objects, such as stars and planets, to produce ephemeris data. As an astronomical field of study, celestial mechanics includes the sub-fields of orbital mechanics, which deals with the launching and orbits artificial satellites, and lunar theory, a specialty which deals with the complications of the orbit of the Moon. Modern celestial mechanics tends to divide between five broad
Abnormal return where: AR - abnormal return for firm i on day t R - actual return for firm i on day t E(R) – expected return for firm i on day t A common practice is to standardise the abnormal returns with the use of the following formula: formula_3 where: SAR - standardised abnormal returns SD – standard deviation of the abnormal returns The SD is calculated with the use of the following formula: formula_4 where: S – the residual variance for firm i, R – the return on the stock market index on day t, R – the average return