Central Bureau for Astronomical Telegrams

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IAUC 7459: C/1999 G5, C/1999 H7, C/1999 J12, C/1999 X2, C/2000 N2; 2000 EB_173; 2000cs

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                                                  Circular No. 7459
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)


COMETS C/1999 G5, C/1999 H7, C/1999 J12, C/1999 X2, C/2000 N2
     Further to IAUC 7458, D. Hammer provides measurements of four
comets found by M. Oates in archival images obtained in 1999 with
the SOHO C2 telescope only and of one comet found by M. Meyer in
real-time SOHO C3 telescope data.  The discovery observations for
these Kreutz sungrazers are given below, while MPEC 2000-O10
contains the fully reduced observations and orbital elements (by
B. G. Marsden).

   1999 UT         R.A. (2000) Decl.    Comet
   Apr. 11.246     1 24.4    + 7 16    C/1999 G5
        20.413     1 57.3    +10 21    C/1999 H7
   May   3.035     2 43.2    +14 10    C/1999 J12
   Dec.  3.896    16 42.2    -23 41    C/1999 X2

   2000 UT         R.A. (2000) Decl.    Comet
   July  8.221     7 00.0    +20 51    C/2000 N2


2000 EB_173
     D. Rabinowitz, Physics Department, Yale University, reports,
on behalf of the QUEST collaboration (cf. Schaefer et al. 1999,
Ap.J. 524, L103), the following photometry of the plutino 2000
EB_173 (cf. MPEC 2000-L09, MPO 1583):  Mar. 1-15 UT, V = 19.86 +/-
0.06, R = 19.27 +/- 0.03 (average of the discovery and prediscovery
observations on seven nights with the 1-m Schmidt telescope, Llano
del Hato, Venezuela); June 3, R = 19.40 +/- 0.12 (Yale 1.0-m
telescope, Cerro Tololo); June 10, B = 21.10 +/- 0.11, V = 20.11
+/- 0.08, R = 19.51 +/- 0.06, I = 19.13 +/- 0.07 (2.4-m MDM
telescope, Kitt Peak); June 15, V = 20.18 +/- 0.03, R = 19.63 +/-
0.03 (3.5-m WIYN telescope, Kitt Peak).  He adds:  "A summed 45-min
exposure in V with the WIYN telescope reveals a stellar intensity
profile in 1".3 seeing and no brightness variations > 3 percent
over 1.25 hr.  The March observations show no variability greater
than about 10 percent.  M. Brown (California Institute of
Technology) notes a flat and featureless reflectance spectrum from
1.4 to 2.4 microns from 10-m Keck observations on June 18 and 19."


SUPERNOVA 2000cs IN MCG +7-34-15
     Corrigendum.  On IAUC 7446, line 8, for Osoyoss, read Osoyoos,

                      (C) Copyright 2000 CBAT
2000 July 20                   (7459)            Daniel W. E. Green

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