Comet C2004 R2 (ASAS)

The ASAS comet passes the SOHO-LASCO field of view on Oct,06-10 2004.

Image sequence: 1, 2, The latest C3 image and animation

New comet C 2004 R2 (ASAS) was discovered by the ASAS Alert System on Sep, 07, 2004 on the image taken on Sep 03, 2004 at position (07:31 -21:16). Confirmation images were taken on Sep 8, and one prediscovery image was identified on Sept 1, 2004.
Original data of the Alert System is available via ASAS old webpage.

Discovery image (03/09/2004)	Movie (08/09/2004)
Medianed image	Contour plot
Coadded image (21/09/2004)	Movie (21/09/2004)

See photos:
Gianluca Masi, Ceccano, Italy:

John Drummond - Possum Observatory - New Zealand:

T	= 20041007.901
e	= 1.00000
q	= 0.11292
Peri	= 5.346
Node	= 182.451
Incl	= 63.162
Eqnx	= 2000
m0	= 11.5
k	= 10.0
(MPEC 2004-R71)

Download Orbit Viewer

Ephemeris

Ephemeris:
    C/2004 R2 (ASAS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2004 09 02    06 38.81   -19 03.6    0.991    1.096    66.4    57.6  11.9
2004 09 07    07 19.19   -20 50.6    0.917    0.983    61.2    63.9  11.2
2004 09 12    08 06.60   -22 07.7    0.866    0.865    54.4    71.1  10.6
2004 09 17    08 59.71   -22 25.9    0.844    0.739    46.1    78.5   9.8
2004 09 22    09 55.33   -21 20.5    0.856    0.603    36.8    85.0   9.0
2004 09 27    10 49.73   -18 41.3    0.904    0.455    27.0    88.6   7.9

2004 10 02    11 41.50   -14 20.1    0.992    0.289    16.7    83.4   6.1
2004 10 03    11 51.86   -13 11.9    1.014    0.254    14.5    79.7   5.6
2004 10 04    12 02.46   -11 55.9    1.038    0.218    12.1    74.1   5.0
2004 10 05    12 13.51   -10 29.9    1.062    0.182     9.5    65.4   4.2
2004 10 06    12 25.37   -08 51.1    1.085    0.149     6.7    51.6   3.4
2004 10 07    12 38.44   -06 57.6    1.104    0.123     3.6    30.2   2.6
2004 10 08    12 52.82   -04 54.9    1.111    0.114     1.2    10.2   2.3
2004 10 09    13 07.55   -03 00.8    1.102    0.126     3.9    32.9   2.7
2004 10 10    13 21.58   -01 28.1    1.083    0.153     7.0    53.1   3.5
2004 10 11    13 34.74   -00 15.1    1.060    0.187     9.8    66.0   4.3
2004 10 12    13 47.26   +00 43.2    1.036    0.222    12.4    74.0   5.0

2004 10 17    14 46.31   +03 40.9    0.944    0.396    23.3    85.8   7.3
2004 10 22    15 44.09   +05 02.6    0.903    0.550    33.2    82.7   8.7

Original telegram

                                                  Circular No. 8402
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 C/2004 R2 (ASAS)
     G. Pojmanski, Warsaw University Astronomical Observatory,
reports the discovery by the 'All Sky Automated Survey' (ASAS) of a
comet on CCD V images taken on Sept. 3.40 UT with the ASAS-3V
instrument (a 200-mm-f.l., 70-mm-aperture, f/2.8 telephoto lens;
pixel size 14".8) at Las Campanas (measurements of ASAS-3V images
given below).  A. Hale (Cloudcroft, NM, 0.20-m reflector) reports
total visual mag 10.9 and coma diameter 2'.5 (diffuse without
condensation) on Sept. 9.47.

     2004 UT          R.A. (2000) Decl.       Mag.   
     Sept. 1.387     6 34 21     -18 49.6     12.2
           3.400     6 49 25     -19 35.1     11.9 
           8.350     7 31 21     -21 15.4
           8.370     7 31 32     -21 15.7
           8.393     7 31 43     -21 16.3
           8.401     7 31 47     -21 16.1     11.5
           8.411     7 31 54     -21 16.5     11.4
           8.414     7 31 55     -21 16.3     11.4

Additional astrometry and the following preliminary parabolic
orbital elements appear on MPEC 2004-R48; ephemeris H = 11.5, n = 3.

     T = 2004 Oct.  7.931 TT          Peri. =   5.228
                                      Node  = 182.395   2000.0
     q = 0.11376 AU                   Incl. =  63.109

2004 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase   Mag.
Sept.10     7 46.83   -21 42.2   0.883   0.913   57.3   68.2   10.9
     12     8 06.60   -22 07.7   0.866   0.865   54.4   71.1   10.7
     14     8 27.30   -22 23.7   0.853   0.815   51.2   74.1   10.5
     16     8 48.76   -22 28.3   0.846   0.765   47.8   77.1   10.3
     18     9 10.76   -22 20.1   0.844   0.713   44.3   79.9   10.0
     20     9 33.04   -21 57.7   0.847   0.659   40.6   82.6    9.8
     22     9 55.33   -21 20.5   0.856   0.603   36.8   85.0    9.5
     24    10 17.40   -20 28.3   0.871   0.546   32.9   87.0    9.2
     26    10 39.07   -19 20.8   0.891   0.486   29.0   88.3    8.9
     28    11 00.25   -17 57.9   0.919   0.424   25.0   88.6    8.5
     30    11 20.98   -16 18.5   0.952   0.358   20.9   87.3    8.0
Oct.  2    11 41.50   -14 20.1   0.992   0.289   16.7   83.4    7.4

                      (C) Copyright 2004 CBAT
2004 September 9               (8402)            Daniel W. E. Green