THE ASTRONOMER Electronic Circular No 434        1990 July 28 22.00UT
Ed:Guy M Hurst, 16,Westminster Close,  Kempshott Rise,   Basingstoke,
Hants, RG22 4PP, England. Telephone:   (0256)471074  Int:+44256471074
Telex: 94082518 Answerback: TAGUY                 Microlink: MAG60138
JANET:GMH @ UK.AC.CAM.ASTRONOMY.STARLINK or GUYH@UK.AC.SUSSEX.CLUSTER
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CORRECTION. The ecircular mailed on July 26 should be numbered 433 not 33.
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COMET LEVY (1990c)
     Orbital elements from MPC 1668 (epoch 1990 Nov. 5.0 ET):

     T = 1990 Oct. 24.6277 ET         Peri. = 242.6328
     e = 1.001267                     Node  = 138.6561  1950.0
     q = 0.938779 AU                  Incl. = 131.5951

     1990 ET      R.A. (1950) Decl.     Delta      r       m1
     Aug.  7    23 00.44    +25 19.5    0.768    1.615     5.5
           8    22 55.15    +24 45.4
           9    22 49.48    +24 07.3    0.714    1.590     5.3
          10    22 43.40    +23 24.7
          11    22 36.88    +22 37.1    0.661    1.565     5.0
          12    22 29.89    +21 43.8
          13    22 22.41    +20 44.4    0.611    1.541     4.8
          14    22 14.42    +19 38.0
          15    22 05.87    +18 24.1    0.566    1.516     4.6
          16    21 56.77    +17 02.0
          17    21 47.10    +15 31.0    0.524    1.492     4.3
          18    21 36.85    +13 50.8
          19    21 26.03    +12 00.9    0.489    1.468     4.1
          20    21 14.65    +10 01.2
          21    21 02.72    + 7 52.2    0.461    1.444     3.9
          22    20 50.32    + 5 34.2
          23    20 37.49    + 3 08.6    0.441    1.420     3.7
          24    20 24.30    + 0 36.9
          25    20 10.85    - 1 58.9    0.430    1.396     3.6
          26    19 57.23    - 4 36.6
          27    19 43.55    - 7 13.6    0.430    1.373     3.5
          28    19 29.90    - 9 47.6
          29    19 16.42    -12 16.3    0.439    1.349     3.5
          30    19 03.17    -14 38.1
          31    18 50.27    -16 51.5    0.458    1.326     3.5
     Sept. 1    18 37.77    -18 55.6
           2    18 25.74    -20 49.9    0.484    1.304     3.6
           3    18 14.20    -22 34.6
           4    18 03.21    -24 09.7    0.517    1.281     3.6
           5    17 52.77    -25 35.8
           6    17 42.88    -26 53.5    0.555    1.259     3.7

 IAUC 5060

SUPERNOVA 1990T IN ANONYMOUS GALAXY
     M. Hamuy, Cerro Tololo Interamerican Observatory; and J. Maza,
Astronomy Department, University of Chile, report:  "R. Antezana has
discovered a supernova 25" east and 2" south of the nucleus of an
anonymous galaxy.  The supernova (estimated mpg = 16.5) was found on
a 15-min 103a-O plate taken by Hamuy and L. Wells with the Curtis
Schmidt telescope on July 21.105 UT.  The galaxy is at R.A. =
19h54m58s.0, Decl. = -56 23'38" (equinox 1950.0).  Confirmation was
made by T. Williams (Rutgers University), who obtained UBVRI CCD
images with the CTIO 0.9-m telescope on July 26.  A spectrum (range
630-950 nm) obtained on the same night by M. Phillips with the CTIO
4-m telescope shows strong Si II 635-nm absorption, consistent with
a type-Ia supernova near maximum light.  A redshift of 0.040 for the
parent galaxy was measured from the same spectrum."


PKS 2155-30, 3C 35, AND PG 1553+11
     J. C. Noble, B. Mitch, M. T. Carini, and H. R. Miller, Georgia
State University, write:  "We have obtained CCD observations of the
blazars PKS 2155-304, 3C 345, and PG 1553+11 at Lowell Observatory
with the 1.05-m telescope + RCA CCD Camera.  PKS 2155-30 was found
to be in a bright state, with V = 12.74 +/- 0.04 on June 29 UT.  PG
1553+11 was also found to be in a bright state, with V = 13.90 +/-
0.04 on Mar.  and V = 13.83 +/- 0.04 on June 29.  3C 345 continues
to be near a minimum in brightness, with V = 17.28 +/- 0.05 observed
on June 29.  Further observations of these sources are encouraged."


PERIODIC COMET PETERS-HARTLEY (1990d)
     Total visual magnitude estimates (cf. IAUC 5026):  June 15.51
UT, 13.2 (A. Pearce, Scarborough, W.A., 0.41-m reflector); 20.44,
13.0 (D. Seargent, The Entrance, N.S.W., 0.25-m reflector); 23.23,
11.3 (C. S. Morris, Pine Mountain Club, CA, 0.26-m reflector); 26.56,
13.0 (Pearce); July 13.20, 13.0 (A. Hale, Las Cruces, NM, 0.41-m
reflector); 15.2, 11.4 (Morris).


FG SERPENTIS = AS 296
     IBVS 3476 equates AS 296 with FG Ser.  Visual magnitude esti-
mates (cf. IAUC 4886) by Pearce:  Mar. 23.87 UT, 10.3; Apr. 4.87,
10.6; 26.84, 10.6; May 1.86, 10.7; 20.85, 10.5; June 27.83, 10.6.

IAUC 5061


D.G.Buczynski