Circular No. 1686 BUREAU CENTRAL DES TELEGRAMMES ASTRONOMIQUES UNION ASTRONOMIQUE INTERNATIONALE Adresse postale: Bureau Central des telegrammes astronomiques, Observatory, Ostervold 3, Copenhagen K, Denmark Adresse telegraphique: Observatory Copenhagen COMET BESTER-HOFFMEISTER (1959d) Astronomisches Recheninstitut, Heidelberg, has transmitted the following 5 observations, obtained by Bester and Hoffmeister: 1959 U.T. R.A. (1950.0) Decl. July 26 20h26m1 19 37.9 -38 50' 28 18 14.0 19 49.9 -40 11 29 21 35.1 19 56.1 -40 48 30 18 16.2 20 1.7 -41 26 31 19 23.7 20 7.7 -41 56 Aug. 8 20 3.6 20 51.8 -44 31 Magnitude: 10m at most. Dr J. Schubart, Sonneberg, has computed the following parabolic orbit and ephemeris: Elements: T = 1959 July 15.77 U.T. Peri. = 184.1 Node = 105.7 1950.0 Incl. = 13.1 q = 1.243 Ephemeris: 1959 R.A. (1950.0) Decl. Aug. 25 21 53.8 -44 11 30 22 6.3 -43 16 Sept. 4 16.7 -42 10 9 25.3 -40 56 14 22 32.7 -39 36 COMET ALCOCK (1959e) Mr. Candy, B.A.A., announces that Alcock has found a comet in the following position: 1959 U.T. R.A. (1959.0) Decl. Mag. Aug. 25 21h 0m0 15 54.2 +34 25 10m Comet diffuse with condensation, nothing reported about tail. Daily motion: +4m 36s, -0o56'. From Mrs. Mrkos, director of the Skalnate Pleso Observatory, the following two observations were received: 1959 U.T. R.A. (1950.0) Decl. Aug. 27 20h34m5 16 3 45.6 +32 41 32 27 21 17.5 16 3 54.4 +32 39 50 Comet diffuse with condensation, nothing reported about tail. Observer: M. Antal; reduction by A. Visnovcova. INTERNATIONAL TIME SIGNALS The Astronomer Royal, Dr. R. v. d. R. Woolley, communicates: From 1959 September 1 to 1959 October 31 inclusive, the International Time Signals of the Royal Greenwich Observatory will be radiated from the following transmitters: 1000 G.M.T. and 1800 G.M.T. Rugby GBR 16 kc/s Rugby GIC33 13 555 kc/s Rugby GUC37 17 685 kc/s 1959 August 28 (1686) Julie M. Vinter Hansen
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