Brandt, Søren

Castro-Tirado, A.

Lund, Niels

Online Research Database In Technology

                       General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.  • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal   If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.     Downloaded from orbit.dtu.dk on: Dec 20, 2017GRS 1217+066Lund, Niels; Brandt, Søren; Castro-Tirado, A.Published in:International Astronomical Union Circulars (IAUC)Publication date:1991Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Lund, N., Brandt, S., & Castro-Tirado, A. (1991). GRS 1217+066. International Astronomical Union Circulars(IAUC), (5207).                                                  Circular No. 5207 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. Telephone 617-495-7244/7440/7444 (for emergency use only) TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505 MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN   SUPERNOVA 1991M IN IC 1151      C. Pennypacker, S. Perlmutter, S. Carlson, N. Hamilton, H. Marvin, R. Muller, and C. Smith communicate:  "The Berkeley Automated Supernova Search reports the discovery of a supernova located 60" north and 36" east of the core of galaxy IC 1151 (R.A. = 15h56m16s.5, Decl. = +17 35'03", equinox 1950.0) in two separate images observed Mar. 12 UT.  There was no supernova visible on an image taken Feb. 24 to a limit (90-percent confidence level) of mag 17.5."      B. Schmidt and B. Leibundgut, Center for Astrophysics, report: "A spectrogram (range 400-900 nm) obtained on Mar. 13.35 UT with the Multiple Mirror Telescope shows the object to be a type-Ia supernova close to maximum light.  SN 1991M was at mag about 15 and is located at R.A. = 15h56m20s.5, Decl. = +17 35'25" (equinox 1950.0)."   GRS 1217+066      N. Lund, S. Brandt, and A. Castro-Tirado, on behalf of the WATCH/GRANAT team (Danish Space Research Institute, Lyngby; and Space Research Institute, Moscow), report:  "A peculiar cosmic gamma-ray burst, GRS 1217+066 (R.A. = 12h17m, Decl. = +6.6, equinox 1950.0, error radius 0.3 deg) was recorded by the WATCH all-sky x- ray monitor on Mar. 10.54 UT.  The duration of the event was about 40 s.  Optical and radio follow up are encouraged."   SUPERNOVA 1990N IN NGC 4639      C. Pollas, Observatoire de la Cote d'Azur, reports detection of this object at V about 18.5 on a Tech Pan exposure taken Mar. 13.14 UT.   COMET LEVY (1990c)      Total visual magnitude estimates (cf. IAUC 5197):  Feb. 21.05 UT, 8.4 (V. F. de Assis Neto, Sao Francisco de Oliveira, Brazil, 10x70 binoculars); Mar. 4.18, 8.0 (A. Hale, Las Cruces, NM, 10x50 binoculars); 9.23, 8.4 (C. S. Morris, Pine Mountain Club, CA, 20x80 binoculars); 13.08, 8.2 (J. E. Bortle, Stormville, NY, 10x50 binoculars). Corrigendum to IAUC 5172: last line, for  (Morris);  read (Morris).   1991 March 13                  (5207)             Daniel W. E. Green  

GRS 1217+066

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GRS 1217+066

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