Occultation of UCAC4 533-049713 by 140 Siwa on 2021 Jan 22 Distance from center of occultation path - in km Distances are positive to the right, referenced to the direction of motion along the path Uncertainty in time = +/- 2 secs d Proba- Location Longitude Latitude alt U.T. Sepn Alt Sun km bility o ' o ' m h m s " o o 159 - 0% ** Path limit plus 3-Sigma ** 135 - 2% ** Path limit plus 2-Sigma ** 114 N 13% Beijing China - Weizhou Ceng 116 5. 40 25. 552 22 29 55 -0.042 24 -12 110 - 16% ** Path limit plus 1-Sigma ** 101 N 26% 324 Peking Observatory, Shaho S 116 15. 40 5. 11 22 29 52 -0.037 24 -12 85 - 50% *** Path limit *** 0 - 100% **** Centre Line **** -67 S 76% 334 Tsingtao 120 15. 36 5. 63 22 29 22 0.025 21 -8 -85 - 50% *** Path limit *** -110 - 16% ** Path limit plus 1-Sigma ** -115 S 12% 236 Tomsk 84 55. 56 25. 106 22 32 45 0.042 39 -32 -135 - 2% ** Path limit plus 2-Sigma ** -136 S 2% Fanzhi China - Yongjiang Cui 113 15. 39 15. 937 22 29 50 0.050 26 -14 -159 - 0% ** Path limit plus 3-Sigma ** Prediction of 2020 Dec 31.0