Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 5348: 1991ar; N Sct 1991; 1991n

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 5347 SEARCH Read IAUC 5349
IAUC number 

                                                  Circular No. 5348
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 1991ar IN IC 49
     A. V. Filippenko and T. Matheson, University of California at
Berkeley, have reexamined their spectrum of SN 1991ar (cf. IAUC 5347).
They confirm that the object is probably of type Ib (cf. IAUC 5346),
rather than type II.  The line previously attributed to Na D is most
likely to be He I 587.6-nm, and other features correspond to those of
SNe Ib a few weeks past maximum brightness.


NOVA SCUTI 1991
     Visual magnitude estimates: Sept. 6.84 UT, 12.8 (M. Verdenet,
Bourbon-Lancy, France); 7.92, 12.4 (O. Midtskogen, Tranby, Norway);
8.85, 12.9 (P. Schmeer, Bischmisheim, Germany); 9.87, 13.6 (A.
Boattini, Florence, Italy); 10.82, 13.7 (M. Tombelli, Montelupo,
Italy); 12.83, 13.7 (S. Korth, Dusseldorf, Germany); 13.90, 13.9 (Korth).


PERIODIC COMET FAYE (1991n)
     Total visual magnitudes: Sept. 1.23 UT, 12.3 (C. S.
Morris, Pine Mountain Club, CA, 0.26-m reflector); 3.93, 12.4 (H.
Mikuz, Ljubljana, Yugoslavia, 0.36-m reflector; delicate fan-shaped
0.1-deg tail in p.a. 300 deg); 6.03, 11.8 (J. Jahn, Bodenteich,
Germany, 0.20-m reflector); 8.39, 10.9 (Morris); 10.95, 11.0 (B. H.
Granslo, Fjellhamar, Norway, 0.20-m reflector); 13.36, 11.3 (J.
Bortle, Stormville, NY, 0.32-m reflector); 15.36, 10.5 (Morris).

     The following ephemeris is from the orbital elements on MPC
13042, the magnitudes being from the ICQ Handbook:

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Sept.21     1 35.65    +13 29.6    0.750    1.695    10.8
     Oct.  1     1 40.70    +11 57.5
          11     1 43.76    + 9 51.5    0.645    1.637    10.3
          21     1 45.56    + 7 24.9
          31     1 47.18    + 4 57.7    0.617    1.602    10.0
     Nov. 10     1 49.76    + 2 51.6
          20     1 54.33    + 1 23.2    0.663    1.594    10.1
          30     2 01.43    + 0 39.2
     Dec. 10     2 11.14    + 0 38.2    0.772    1.612    10.5
          20     2 23.33    + 1 13.7
          30     2 37.61    + 2 16.5    0.931    1.656    11.1


1991 September 16              (5348)              Brian G. Marsden

Read IAUC 5347 SEARCH Read IAUC 5349

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!