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IAUC 5375: 1991bb; 1991q; V667 Cas; V1017 Sgr

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IAUC number 

                                                  Circular No. 5375
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 1991bb IN UGC 2892
     D. Williamson and M. S. Burns, Harvey Mudd College, report the
following preliminary photometry of SN 1991bb, obtained with a CCD
camera on the 0.6-m telescope at Table Mountain Observatory on Oct.
16.38 UT:  V = 17.5; B-V = +0.2; V-R = +0.5; V-I = +0.6.


PERIODIC COMET LEVY (1991q)
     Orbital elements from MPC 18773:

                    Epoch = 1991 July  3.0 ET
     T = 1991 July  8.1927 ET         Peri. =  41.4772
     e = 0.928814                     Node  = 328.7224  1950.0
     q = 0.982515 AU                  Incl. =  19.1845
       a = 13.802108 AU    n = 0.0192214    P =  51.276 years

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Oct. 31     9 30.64    +29 48.6    1.893    2.002    12.4
     Nov. 10     9 37.40    +29 22.6
          20     9 40.63    +29 12.0    1.860    2.232    12.8
          30     9 40.23    +29 16.3
     Dec. 10     9 36.09    +29 33.3    1.824    2.459    13.2
          20     9 28.33    +29 58.4
          30     9 17.41    +30 25.3    1.834    2.682    13.6


V667 CASSIOPEIAE
     Visual magnitude estimates by A. Pereira, Cabo da Roca, Portugal
(cf. IAUC 5157):  Jan. 13.83 UT, 9.6; Apr. 1.85, 11.5; 6.88,
11.4; Sept. 30.95, 12.3; Oct. 16.00, 11.5.


V1017 SAGITTARII
     Visual magnitude estimates:  Oct. 3.10 UT, 12.6 (D. York,
Abiquiu, NM; not Albuquerque, as stated on IAUC 5354); 7.99, 12.6
(J. E. Bortle, Stormville, NY); 8.5, 12.7 (T. Cragg, Coonabarabran,
N.S.W, Australia); 10.13, 12.5 (R. Royer, Wrightwood, CA); 16.75,
12.5 (D. Overbeek, Edenvale, R.S.A.); 18.73, 12.2 (Overbeek).


1991 October 24                (5375)             Daniel W. E. Green

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