NEW ORBITS
 

 ADS   Name      P (yr)    T      e     W(2000)    1994         Author
 RA 2000 DEC    n (deg)  a (")  i (deg) w (deg)    1995        Last ob.
-------------------------------------------------------------------------
8092    A 1353  123.60  1961.70  0.659   46.9   219.7 0.51   DOCOBO-LING
 11136 N 5525   2.9126   0.380  117.9    41.7   219.1 0.52   1993.266

 -     SEE 219   65.00  1929.50  0.760   28.8   263.8 0.02   DOCOBO-LING
 15088 S 4517   5.5385   0.350   77.5   291.4    19.0 0.07   1991.3896

12741  SEE 389   47.15  1992.07  0.147  149.0   150.0 0.16  DOCOBO-PRIETO
 19398 S 2326   7.6352   0.188   94.9   328.0   149.2 0.16   1991.3928

========================================================================
 

                            GENERAL INFORMATION

    Dr. Bambang Hidayat announces the submission to A. & A.  of a paper
    reporting photographic observations of 221 visual double stars by Drs.
    Jasinta and Soegiartini of the Bosscha Observatory, Indonesia.

        ***********************

    Following a suggestion made by Dr. G. M. Popovic we include the
    following list of papers published in 1993 with measurements or orbits
    of double stars.
 

    BAIZE, P.: "Elements orbitaux de dix-neuf etoiles doubles" Astron.
                  Astrophys. Suppl. Ser 99, 205-215 (1993).

    BARLOW, D.J.; FEKEL,  F.C.;  SCARFE,  C.D.:  "A  three-dimensional
                  solution for the orbit of  Capella".  Publ.  Astron.
                  Soc. Pacific, 105, 476-486 (1993).

    BEDDING, T.R.: "The orbit  of  the  binary  star  Delta  Scorpii".
                  Astron. J. 106(2), 768-772 (1993).

    COUTEAU, P.: "Etoiles doubles nouvelles (23d serie) decouvertes
                  Nice avec la lunette de 50 cm".  Astron.  Astrophys.
                  Suppl. Ser. 97, 511-515 (1993).

    COUTEAU, P; DOCOBO, J.A.; LING, J.F.: "Mesures de binaries serrees
                  faites au Pic du  Midi"  Astron.  Astrophys.  Suppl.
                  Ser. 100, 305-310 (1993).

    DADONAS, V.;  SPERAUSKAS,  J.;  TOKOVININ,  A.:  "Radial  velocity
                  measurements of chromospherically-active stars I. BD
                  +25 2511" Astrophysics Space Science 200(2)  195-199
                  (1993).

    DESSEL, VAN E.,SINACHOPOULUS, D.: "CCD astrometry and instrumental
                  DV photometry  of  wide  visual  double  stars  III.
                  Differential measurements of often observed southern
                  pairs Astron. Astrophys. Suppl.  Ser.  100,  517-520
                  (1993).

    DOCOBO, J.A.;  PRIETO,  C.:  "Micrometer  measurements  of  visual
                  double stars made at the  spanish  observatories  at
                  Calar Alto and  Fabra".  Astron.  Astrophys.  Suppl.
                  Ser. 100, 641-646 (1993).

    FEKEL, F.C.; BROWNING, J.C.;  HENRY,  G.W.;  MORTON,  M.D.;  HALL,
                  D.S.:    "Chromospherically    active    stars    X.
                  Spectroscopy and photometry of HD  212280".  Astron.
                  J. 105(6), 2265-2275 (1993).

    FEKEL, F.C.;  TOMKIN,  J.:  "The  spectroscopic  orbit  of   gamma
                  Geminorum and search for its secondary"  Astron.  J.
                  106(3), 1156-1161 (1993).

    HARTKOPF,  W.I.;  MASON,  B.D.;  BARRY,  D.J.;  McALISTER,  H.A.;
                  BAGNUOLO,  W.G.;   PRIETO,   C.M.:   "ICCD   Speckle
                  observations  of  binary  stars  VIII.  Measurements
                  during  1989-1991  from  the  Cerro   Tololo   4   m
                  telescope". Astron. J. 106(1), 352-360 (1993).

    HEINTZ, W. D.: "The  triple  star  ADS  440"  Publ.  Astron.  Soc.
                  Pacific 105, 44-44 (1993).

    HEINTZ, W. D.; STROM, C.:  "The  visual  binary  Lambda  Ophiuchi"
                  Publ. Astron. Soc. Pacific, 105, 293-293(1993).

    HEINTZ, W. D.: "Orbits  of  visual  binaries"  Astron.  Astrophys.
                  Suppl. Ser. 98, 209-212 (1993).

    HEINTZ, W. D.: "The orbit of VW Cephei AB = HEI 7"  Publ.  Astron.
                  Soc. Pacific, 105, 586-587 (1993).

    LING, J.F.; LANCHARES,  V.:  "Micrometer  measurements  of  visual
                  double stars at Calar Alto" Astron.  Nachr.  314(4),
                  303-305 (1993).

    MASON, B.D.; McALISTER, H.A.; HARTKOPF, W.I.; BAGNUOLO, W.G.  Jr.:
                  "ICCD Speckle observations of binary stars.  VII.  A
                  duplicity survey of the Hyades cluster". Astron.  J.
                  105(1), 220-225 (1993).

    MASON, B.D.: HARTKOPF, W.S.; McALISTER, H.A.;  SOWELL,  J.:  "ICCD
                  Speckle  observations  of  binary   stars.   IX.   A
                  duplicity survey of the Pleiades,  Praesepe  and  IC
                  4665 clusters" Astron. J. 106(2), 637-641 (1993).

    McALISTER, H.A.; MASON, B.D.; HARTKOPF, W.I.; SHARA,  M.M.:  "ICCD
                  Speckle observations of binary stars. X.  A  further
                  survey  for  duplicity  among  the  bright   stars".
                  Astron. J. 106(4), 1639-1655 (1993).

    MULLER, P.: "Double  star  measurements  made  at  Nice".  Astron.
                  Astrophys. Suppl. Ser. 102, 643-648 (1993).

    PAN, X.;  SHAO,  P.;  COLAVITA,  M.M.:  "High  angular  resolution
                  measurements of Algol". Astrophys. J. 413, L129-L131
                  (1993).

    PETERSON, D.M.; STEFANIK, R.P.; LATHAM, D.W.:  "The  spectroscopic
                  orbit of theta Tauri". Astron. J. 105(6),  2260-2264
                  (1993).

    SMEKHOV, M.G.; TOKOVININ, A.A.: "Radial velocitiy measurements  of
                  visual binaries". Astron. Lett. 19(2), 77-80 (1993).

    TOKOVININ, A. A.: "Spectroscopic-visual  orbits  for  two  stars".
                  Astron. Lett. 19(2), 73-77 (1993)
 
 

                                IN MEMORIAM

    As many of you will know, Dr. Sylvain AREND, one of Europe's most noted
    astronomers, died on February 18th 1992. Dr. J. Dommanget of the
    Belgian Royal Observatory has requested that this sad occurrence be
    noted in the Information Circular.

    Born in Robelmont, Luxemburg, in 1902, Sylvain Arend studied at the
    Free University, Brussels, where he obtained his doctorate in Physical
    Sciences and Mathematics with the highest honours. In 1928 he obtained
    a grant to work as an assistant at the Belgian Royal Observatory, with
    which he continued to be associated until his retirement in 1967 as
    Head of the Department of Astrometry and Celestial Mechanics.

    Arend's main interests were astrometry and astrometric photography.
    The fruits of his extensive work in this field, summarized in his 80 or
    so papers, included the discovery of a nova (1952 Scuti), three comets
    (one of them the well-known Arend-Roland comet), numerous variable
    stars and fifty or so asteorids, as well as observations of the
    positions of literally thousands of other asteroids. Of particular
    relevance to IAU Commission 26, he was also responsible for putting new
    life into work on double stars at the Royal Observatory; following
    contacts with USA specialists during visits to the Yerkes, Mt. Wilson
    and McDonald observatories, he set up the Royal Observatory's 45 cm
    equatorial telescope, and went on to devise a new method for
    calculation of double star orbits.

    =================================================================

                                  ERRATUM

               In Circular No. 121 the date of publication should,  of
    course, read "OCTOBER 1993", not "OCTOBER 1994".
 

    =================================================================

    The deadline for contributions to Information Circular No. 123 is:

                              June 15th 1994
 

         J. A. Docobo (doc@seins.usc.es)
         J. F. Ling (lin@seins.usc.es)
         Fax: (81) 59 70 54

         Observatorio Astronomico "R. M. Aller"
         P. O. Box 197
         Universidade de Santiago de Compostela
         SPAIN