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IAUC 8079: 2003ax, 2003ay; Poss. METEORS FROM C/1976 D1; C/2002 Y1

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                                                  Circular No. 8079
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE 2003ax AND 2003ay
     Further to IAUC 8077, W. M. Wood-Vasey, G. Aldering, and P.
Nugent report the discovery of more apparent supernovae on NEAT
images:

SN      2003 UT      R.A.  (2000.0)  Decl.    Mag.      Offset
2003ax  Feb.  9.3    8 08 35.53  + 7 46 42.2  18.7   4" W, 1" N
2003ay  Feb. 19.1    4 07 26.25  +28 07 55.4  19.1   2" W, 7" N

Additional magnitudes:  SN 2003ax, Jan. 26 UT, [19.5; Feb. 18, 18.4;
19, 18.6; 22, 18.8; 23, 19.0.  SN 2003ay, Jan. 28, [20.0; Feb. 22,
19.1; 23, 19.2.


POSSIBLE METEORS FROM COMET C/1976 D1
     P. Jenniskens, SETI Institute, Mountain View, CA, reports that
calculations by E. Lyytinen and himself (Icarus, in press) indicate
that a one-revolution dust trail of comet C/1976 D1 (Bradfield; see
also IAUC 2933) will be in the earth's path on 2003 Mar. 1.912 +/-
0.010 UT for an estimated duration of 14 min (FWHM) with a peak
rate of perhaps 300/hr.  The trail passes just inside the earth's
orbit at a distance of 0.00008 AU.  The predicted radiant is at R.A.
= 13 deg, Decl. = -64 deg (equinox 2000.0), and the apparent meteor
velocity would be 42 km/s.


COMET C/2002 Y1 (JUELS-HOLVORCEM)
     Ephemeris extension to IAUC 8055 (elements MPC 47728; H_15 =
6.5):

2003 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Mar.  2    21 26.60   +57 30.2   0.977   1.088   67.1   57.0    7.0
      7    22 14.34   +53 39.8   1.040   1.021   60.3   57.6    6.7
     12    22 48.89   +49 30.2   1.111   0.957   53.7   56.8    6.4
     17    23 14.38   +45 22.9   1.188   0.896   47.5   54.9    6.2
     22    23 33.84   +41 25.0   1.265   0.841   41.6   51.8    5.9
     27    23 49.27   +37 37.0   1.341   0.794   36.1   47.7    5.6
Apr.  1     0 01.97   +33 56.6   1.411   0.756   30.9   42.8    5.4
      6     0 12.87   +30 21.3   1.474   0.729   26.4   37.6    5.3
     11     0 22.61   +26 49.0   1.527   0.715   22.7   32.7    5.2

     Visual m_1 estimates:  Feb. 6.68 UT, 8.4 (Y. Nagai, Yamanashi,
Japan, 11x80 binoculars); 12.19, 7.9 (A. Baransky, Bucha, Ukraine,
20x60 binoculars); 20.93, 7.7 (J. J. Gonzalez, Asturias, Spain,
11x80 binoculars); 23.77, 7.4 (M. Meyer, Riedelbach, Germany, 10x50
binoculars).

                      (C) Copyright 2003 CBAT
2003 February 25               (8079)            Daniel W. E. Green

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