TA e-circular

<title>TA e-circular</title>
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THE ASTRONOMER Electronic Circular No 408         1990 Apr 29 17.52UT
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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V3890 SAGITTARII
P. Kilmartin and A. Gilmore, Mt. John University Observatory, report
that A. F. Jones, Nelson, New Zealand, has found this novalike
variable (N Sgr 1962) to be in outburst.  The following visual
magnitude estimates are available:  Apr. 27.72 UT, 8.5 (Jones);
28.68, 9.0 (A. Pearce, Scarborough, W. Australia).
IAUC 5002
Editor: The star was found by H.Dinerstein on plates taken by
D.Hoffleit. Maximum magnitude observed was 8.4 with max between 1962
May 10 and June 2. (IBVS 845).
 
COMET AUSTIN (1989c1)
Ephemeris from the orbital elements on E407:
     1990 ET      R.A. (1950) Decl.     Delta      r       m1
     Apr. 29     0 16.64    +35 56.4    0.601    0.625     5.4
          30     0 11.18    +35 51.0
     May   1     0 05.58    +35 43.0    0.562    0.666     5.4
           2    23 59.82    +35 32.2
           3    23 53.89    +35 18.5    0.525    0.707     5.5
           4    23 47.75    +35 02.0
           5    23 41.39    +34 42.3    0.488    0.748     5.5
           6    23 34.77    +34 19.3
           7    23 27.86    +33 52.7    0.453    0.789     5.5
           8    23 20.63    +33 22.1
           9    23 13.03    +32 47.1    0.418    0.830     5.5
          10    23 05.04    +32 07.2
          11    22 56.60    +31 21.7    0.385    0.870     5.5
          12    22 47.68    +30 30.1
          13    22 38.22    +29 31.3    0.353    0.910     5.4
          14    22 28.19    +28 24.6
          15    22 17.55    +27 08.8    0.324    0.950     5.4
          16    22 06.25    +25 43.0
          17    21 54.27    +24 05.8    0.297    0.990     5.3
          18    21 41.59    +22 16.2
          19    21 28.21    +20 13.2    0.273    1.029     5.3
          20    21 14.13    +17 56.2
          21    20 59.40    +15 24.9    0.255    1.068     5.2
          22    20 44.09    +12 39.9
          23    20 28.29    + 9 42.5    0.242    1.106     5.3
          24    20 12.12    + 6 35.1
          25    19 55.72    + 3 21.0    0.237    1.144     5.3
IAUC 5002
 
RY SAGITTARII
A further telegram has been received from Colin Henshaw in Palapye,
Botswana, with further estimates(cf E406):
1990 Apr 19.5, 7.8; 20.4, 7.8; 21.5, 7.8; 22.4, 7.8; 23.5, 8.0;
24.5, 8.0; 26.4, 8.4; 27.4, 8.4.
Messages from Harare, Zimbabwe, have been received via R.Fleet:
1990 Apr 28.10UT, 8.0 (John Vincent); 28.10, 8.4 (Mike Begbie).
 
Guy M Hurst
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