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IAUC 8976: V1309 Sco; (136108); 201P, 202P, 203P, 204P, 205P

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IAUC number

                                                  Circular No. 8976
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     R. J. Rudy, D. K. Lynch, R. W. Russell, and B. Kaneshiro, The
Aerospace Corporation; and M. Sitko and H. Hammel, Space Science
Institute, report 0.8- to 2.4-micron spectroscopy of V1309 Sco (N
Sco 2008; cf. IAUC 8972) on Sept. 5 UT using the Spex instrument at
the Infrared Telescope Facility.  V1309 Sco is at a very early
stage of development, mimicking an F-giant spectrum and showing
weak emission lines for only a few of the lower series Pashchen
transitions and some of the stronger transitions of Fe II.  The
spectrum is dominated by aborption features including most of the
higher Pashcen series, all of the Brackett lines, the Ca II triplet,
and lines of C I and N I.  The presence of iron emission at this
early stage indicates that V1309 Sco is an "Fe II"-type nova.  This,
plus the narrowness of the lines (full-width-at-half-maximum about
300 km/s) and the predominance of the absorption spectrum suggest
that the V1309 Sco eruption resulted from the ejection of a massive,
low-velocity shell by a carbon-oxygen white dwarf.
     Additional magnitude estimates of V1309 Sco (visual unless
otherwise noted):  Aug. 26.52 UT, [11.7 (N. J. Brown, Ellenbrook,
Western Australia, 200-mm f/2.8 telephoto lens + T-Max 400 film);
30.019, [12.4 (W. Liller, Vina del Mar, Chile, Technical Pan film +
orange filter); Sept. 3.952, 9.3 (J. G. de S. Aguiar, Campinas,
Brazil); 4.955, 8.5 (Aguiar); 5.940, 8.1 (Aguiar); 6.015, 7.5
(Liller, as above).

(136108) HAUMEA
     The IAU's Committee on Small Body Nomenclature and Working
Group for Planetary System Nomenclature have agreed to give to the
transneptunian dwarf planet, or 'plutoid', (136108) 2003 EL_61 (cf.
IAUC 8577) the name "Haumea", with the citation given on MPC 63878.
At the same time, the IAU is giving the name Hi'iaka to (136108)
Haumea I -- the larger, outer satellite (cf. IAUC 8577) -- and the
name "Namaka" to (136108) Haumea II -- the smaller, inner satellite
(cf. IAUC 8636).

COMETS 201P, 202P, 203P, 204P, 205P
     The following permanent numbers have been assigned (cf. MPC
63768) to newly recovered comets:  201P/2008 Q4 (LONEOS; cf. IAUC
8970); 202P/2008 R2 (Scotti; cf. IAUC 8971); 203P/2008 R4
(Korlevic; cf. IAUC 8974); 204P/2008 R5 (LINEAR-NEAT; cf. IAUC
8974); 205P/2008 R6 (Giacobini; cf. IAUC 8975).

                      (C) Copyright 2008 CBAT
2008 September 17              (8976)            Daniel W. E. Green

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