Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 7232: P/1999 P1; C/1999 H1; V382 Vel; V1493 Aql

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 7231 SEARCH Read IAUC 7233

View IAUC 7232 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 7232
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET P/1999 P1 (MACHHOLZ 2)
     Ephemeris from the orbital elements on IAUC 7231:

1999 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      m2
July 31    16 52.54    -11 22.0    1.226    1.990  125.0   24.7     20.6
Aug. 10    16 44.79    -10 56.1    1.237    1.888  113.7   29.4     20.6
     20    16 41.28    -10 43.6    1.253    1.784  103.4   33.5     20.6
     30    16 41.99    -10 42.8    1.268    1.677   94.2   36.9     20.6
Sept. 9    16 46.75    -10 50.9    1.277    1.568   85.8   39.8     20.6
     19    16 55.37    -11 04.9    1.276    1.457   78.4   42.5     20.5
     29    17 07.65    -11 21.5    1.261    1.345   71.9   45.1     20.4
Oct.  9    17 23.50    -11 37.2    1.231    1.232   66.1   47.9     20.2
     19    17 42.94    -11 49.0    1.182    1.121   61.2   51.2     20.0
     29    18 06.01    -11 54.0    1.114    1.013   57.1   55.4     19.8

Z. Sekanina (1999, A & Ap 342, 285; Table 7) tabulates the expected
offsets of components B and D from component A.  In terms of Delta T,
these amount to +0.21 and +0.82 day, respectively.


COMET C/1999 H1 (LEE)
     Total visual magnitudes: June 22.27 UT, 6.6 (S. T. Rae, Palmerston
North, New Zealand, 10 x 50 binoculars); July 3.26, 6.8 (N. Biver, Oahu,
HI, 0.26-m reflector); 27.09, 6.1: (J. Shanklin, Cambridge, England,
14 x 100 binoculars); 29.09, 6.6 (K. Hornoch, Lelekovice, Czech Republic,
10 x 50 binoculars); Aug. 1.01, 6.6 (B. H. Granslo, Fjellhamar, Norway,
0.07-m refractor); 2.07, 6.8 (R. Bouma, Groningen, The Netherlands, 0.16-m
reflector); 2.35, 7.2 (J. Bortle, Stormville, NY, 20 x 80 binoculars).


V382 VELORUM
     A. C. Gilmore, Mount John University Observatory, provides further
photometric observations, continuing the series on IAUC 7226:
July 20.476 UT, V = 7.73, U-B = -0.93, B-V = -0.23, V-R = +1.23, V-I = +0.55,
airmass =  2.92; 22.329, 7.71, -0.92, -0.24, +1.17, +0.52, 1.39.  Standard
deviations < 0.02 mag on July 20 and < 0.01 mag on July 22.


V1493 AQUILAE
     Visual magnitudes: July 17.92, 11.4 (R. Bouma, Lattrop, The Netherlands);
21.964, 12.4 (M. Reszelski, Szamotuly, Poland); 26.08, 12.3 (P. Schmeer,
Bischmisheim, Germany); 29.85, 12.8 (K. Hornoch, Lelekovice, Czech Rep.);
Aug. 3.89, 13.0 (M. Lehky, Hradec Kralove, Czech Rep.).

                      (C) Copyright 1999 CBAT
1999 August 4                  (7232)              Brian G. Marsden

Read IAUC 7231 SEARCH Read IAUC 7233

View IAUC 7232 in .dvi or .ps format.

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

Valid HTML 4.01!