Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 9180: 103P; 2010 GW_147, 2010 KW_7, 2010 LG_61, 2010 OM_101, 2010 PO_58

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 9179 SEARCH Read IAUC 9181

View IAUC 9180 in .dvi, .ps or .PDF format.
IAUC number 

                                                  Circular No. 9180
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
New postal address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
CBATIAU@EPS.HARVARD.EDU           ISSN 0081-0304
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


COMET 103P/HARTLEY
     M. J. Mumma, B. P. Bonev, M. A. DiSanti, L. Paganini, G. L.
Villanueva, and Y. L. Radeva, Goddard Space Flight Center (GSFC);
E. L. Gibb, University of Missouri at St. Louis; K. Magee-Sauer,
Rowan University; and J. V. Keane and K. J. Meech, University of
Hawaii (UH), report:  "In collaborative runs in mid-October, we
acquired high-resolution infrared spectra with NIRSPEC at the Keck
Observatory.  They reveal strong detections of OH* (prompt emission),
many lines of water and HCN, plus detections of the H_2CO Q-branch
(nu_1, 2781 cm**-1), C_2H_6, and CH_3OH.  Additional trace species
are under evaluation.  The quantitative results given below are
provisional."

     J. V. Keane and K. J. Meech, UH; and the above team members
report that on Oct. 19.5 UT the slit was oriented along the
direction of the CN jet (p.a. 350 deg).  H_2O was symmetric about
the nucleus, but C_2H_6 was extended in the jet's direction.
Preliminary production rates, rotational temperatures, and
abundance ratios (percent relative to water) are:  H_2O (23 lines),
4.8 +/- 0.1 x 10**27 s**-1, 75 +/- 2 K, 100 percent; C_2H_6 (many
Q-branches) 2.96 +/- 0.23 x 10**25 s**-1, 75 K (assumed), 0.61
percent; CH_3OH (Q-branch nu_2-band), 11.2 +/- 0.72 x 10**25 s**-1,
75 K (assumed), 2.3 percent.

     B. P. Bonev, Catholic University and GSFC; and the above team
members report that on Oct. 22.5 UT the slit was oriented along the
sun-comet line.  Spatial profiles for hydrogen cyanide, methanol,
ethane, and water are fairly symmetric about the nucleus.
Preliminary production rates, rotational temperatures, and
abundance ratios (percent relative to water) are:  H_2O (20 lines),
7.2 +/- 0.29 x 10**27 s**-1, 77 +/- 2 K, 100 percent; HCN (12 lines),
1.7 +/- 0.1 x 10**25 s**-1, 80 K (assumed), 0.24 percent; C_2H_6
(many Q-branches), 2.96 +/- 0.23 x 10**25 s**-1, 75 K (assumed),
0.61 percent; CH_3OH (Q-branch nu_2-band), 11.2 +/- 0.72 x 10**25
s**-1, 75 K (assumed), 2.3 percent.

     Corrigendum.  On IAUC 9175, line 14, FOR  and east  READ
and south


2010 GW_147, 2010 KW_7, 2010 LG_61, 2010 OM_101, 2010 PO_58
     Several more apparently asteroidal objects in retrograde
orbits have been found by the WISE spacecraft in recent months:
2010 GW_147 (MPEC 2010-H33; P approximately 2700 yr, i = 99.7 deg,
q = 5.38 AU); 2010 KW_7 (MPEC 2010-K29; q = 2.56 AU, P
approximately 740 yr); 2010 OM_101 (MPEC 2010-P16; q = 2.13 AU, P
approximately 985 yr); 2010 LG_61 (MPEC 2010-O48, 2010-L63; P
approximately 26.1 yr, q = 3.0 AU, i = 121 deg); and 2010 PO_58
(MPEC 2010-P59; P approximately 19.0 yr, q = 1.37 AU, i = 124 deg).

                      (C) Copyright 2010 CBAT
2010 November 4                (9180)            Daniel W. E. Green

Read IAUC 9179 SEARCH Read IAUC 9181

View IAUC 9180 in .dvi, .ps or .PDF format.

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

Valid HTML 4.01!