[IAUC] IAUC 9180: 103P; 2010 GW_147, 2010 KW_7, 2010 LG_61, 2010 OM_101, 2010 PO_58 [25139-2011/04-R1]

[quai en eps.harvard.edu]

                                                  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 en 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