Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 7686: 2001 Q2; N Cyg 2001 No. 2

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 7685 SEARCH Read IAUC 7687

View IAUC 7686 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 7686
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)


COMET 2001 Q2
     Vance Avery Petriew, Regina, SK, reports his visual discovery
of a comet during a star party at Cyprus Hills, Saskatchewan, as
shown below.  The object's presence was also confirmed visually by
R. Huziak (0.25-m reflector) and P. Campbell (0.32-m reflector) at
Cyprus Hills.  The observations by A. Hale were made following a
request by the Central Bureau.

     2001 UT             R.A. (2000) Decl.        m1    Observer
     Aug. 18.42       5 31.9       +28 08        11.0   Petriew
          19.45502    5 37 59.10   +27 47 07.8   13.2   Hale
          19.46173    5 38 01.45   +27 46 58.4   13.0     "
          19.47459    5 38 05.77   +27 46 45.4   13.4     "
          19.48078    5 38 07.88   +27 46 36.9   13.4     "

V. A. Petriew (Cyprus Hills, SK).  Round coma of diameter 3' with
  condensed nucleus and no tail.  0.51-m f/5 reflector at 80x.
  Motion about 2' to the southeast over an hour.  Magnitude
  approximate.
A. Hale (Cloudcroft, NM).  0.20-m Schmidt-Cassegrain reflector +
  CCD.  Visual observations with a 0.41-m reflector on Aug. 19.47
  showed a coma diameter of 2'.5 and m_1 = 11.0.


NOVA CYGNI 2001 No. 2
     A. Nakamura, Kume, Ehime, Japan, reports the discovery by
Akihiko Tago (Tsuyama, Okayama) of an apparent nova (mag 8.8) on
two T-Max 400 films taken on Aug. 18.599 and 18.603 UT with an
unfiltered 105-mm f/4 camera lens.  Tago adds that nothing is
visible at this position on his films taken on Aug. 15.62, 16.64,
and 17.64 (limiting mag 12.0).  H. Abe (Yatsuka, Shimane) measured
the following accurate position and magnitude from five unfiltered
CCD frames taken with a 0.26-m f/6 reflector on Aug. 19.6 UT:  R.A.
= 21h03m02s.00, Decl. = +48o45'52".9 (equinox 2000.0), mag 6.6.
     K. Ayani, Bisei Astronomical Observatory (BAO), reports that a
spectrum (range 460-680 nm; resolution 0.6 nm at H-alpha), obtained
on Aug. 19.57 UT with BAO 1.01-m telescope, shows emission lines of
H-alpha and H-beta, both showing deep P-Cyg absorption:  "The FWHM
of the H-alpha emission profile is about 1400 km/s, and the minimum
of H-alpha P-Cyg absorption has a blueshift of 1700 km/s with
respect to the emission peak.  These features suggest that this is
a nova."

                      (C) Copyright 2001 CBAT
2001 August 19                 (7686)            Daniel W. E. Green

Read IAUC 7685 SEARCH Read IAUC 7687

View IAUC 7686 in .dvi or .ps format.

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

Valid HTML 4.01!