Central Bureau for Astronomical Telegrams
IAUC 2238: N LMC; 1969i
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Read IAUC 2239
Circular No. 2238
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS
NOVA IN THE LARGE MAGELLANIC CLOUD
Dr. D. J. MacConnell, Department of Astronomy, University of
Michigan writes: "I wish to report the discovery of a nova at the
southern edge of the Bar in the Large Magellanic Cloud. The nova
appears on a 4o objective-prism plate taken 1970 March 8.2 UT by A.
Gonez at Cerro Tololo with the Curtis Schmidt-type telescope of the
University of Michigan. The widened IIa-O plate was exposed one
hour through a GG5 filter; the spectral region covered is approximately
4500-5000 A at a dispersion of about 400 A/mm at 4800 A. The
most recent plate of the area available was taken 1970 Feb. 8 with
the same emulsion, filter, exposure time and limiting photographic
magnitude (about 13.8). The object does not appear on that plate
nor on several other spectrum plates in our collection taken since
October 1967. The approximate coordinates as measured on the
Uppsala-Mt. Stromlo Atlas are R. A. = 5h33m.5 +/- 0m.1, Decl. = -70o36' +/- 1'
(1975.0). On chart No. 54B of the Hodge-Wright S.A.O. Atlas it is
approximately 1.2 cm north and 0.3 cm west of HV 5934. There are
two or three stars on the Hodge-Wright chart within the error circle;
they appear near the plate limit (mpg 17.5). The magnitude of
the nova on the discovery plate is near mpg 12 as estimated from
comparison with several OB stars near the nova having magnitudes
assigned by Sanduleak [(1969) Cerro Tololo Contr. No. 89]. The
appearance of the spectrum on the discovery plate is as follows: H-beta
is very bright and broad, and faint broad Fe II emission at 4924 A
and 5018 A is present. No other emission is present, and no
absorption features are evident at our dispersion. The spectrum seems to
have been obtained during the "principal" or "diffuse-enhanced"
emission stage, so that it was probably one to four magnitudes down
from maximum light. Only five other novae are known to have
occurred in the LMC [Henize, Hoffleit and Nail (1954) Proc. nat.
Acad. Sci. Am. 40, 365]."
COMET BENNETT (1969i)
Further precise positions have been reported as follows:
1970 UT R. A. (1950) Decl. Mag. Observer
Feb. 26.01331 22 39 32.53 -48 24 50.3 Potter
27.01334 22 37 28.78 -47 46 09.1 "
28.01059 22 35 24.53 -47 05 07.4 "
Mar. 1.00853 22 33 19.23 -46 21 25.2 "
2.00510 22 31 13.52 -45 34 54.2 "
3.00789 22 29 07.13 -44 44 49.8 "
8.40551 22 18 04.81 -39 05 39.1 "
10.40625 22 14 19.83 -36 22 06.7 "
11.40558 22 12 35.60 -34 51 02.4 "
12.40629 22 10 57.12 -33 12 56.9 "
13.40770 22 09 26.48 -31 27 38.3 "
14.40149 22 08 04.98 -29 35 31.7 "
16.40708 22 05 51.11 -25 25 37.2 "
17.41472 22 05 01.23 -23 07 45.1 "
18.41128 22 04 24.19 -20 43 15.2 "
19.41095 22 04 00.68 -18 10 29.8 "
20.41202 22 03 51.66 -15 30 04.9 "
21.41446 22 03 57.16 -12 42 24.1 "
Apr. 6.12682 22 37 47.6 +31 56 46 1.9 Bielicki
11.11471 22 58 12.59 +41 21 21.1 Milet
11.11543 22 58 12.73 +41 21 26.4 "
11.11615 22 58 12.99 +41 21 31.1 "
11.11687 22 58 13.22 +41 21 35.1 "
11.11762 22 58 13.37 +41 21 39.7 "
11.11849 22 58 13.69 +41 21 45.1 "
11.12749 22 58 16.15 +41 22 37.0 "
11.14653 22 58 20.89 +41 24 27.4 "
14.13007 23 11 43.71 +45 47 56.4 "
14.13078 23 11 43.81 +45 47 57.7 "
14.13151 23 11 44.13 +45 48 02.5 "
14.13222 23 11 44.34 +45 48 04.2 "
14.13298 23 11 44.88 +45 48 07.9 "
14.13383 23 11 45.38 +45 48 14.4 "
15.06917 23 16 03.88 +47 01 05.9 "
15.06990 23 16 04.26 +47 01 10.1 "
15.07060 23 16 04.48 +47 01 13.7 "
15.07136 23 16 04.82 +47 01 16.5 "
15.07207 23 16 05.02 +47 01 19.3 "
15.07294 23 16 05.35 +47 01 21.7 "
15.07917 23 16 06.60 +47 01 53.8 "
22.13042 23 49 47.08 +54 12 12.3 "
22.13117 23 49 47.40 +54 12 13.9 "
22.13192 23 49 47.53 +54 12 14.7 "
22.13267 23 49 47.78 +54 12 17.8 "
22.13347 23 49 48.10 +54 12 19.4 "
22.14041 23 49 49.98 +54 12 42.6 "
H. Potter and A. Lokalov (National Observatory, Santiago). Cerro
El Roble station, Maksutov telescope. Measurers: C. Torres, M.
Wischniewsky and J. Petit. Computer: H. Wroblewski.
M. Bielicki (Warsaw Observatory). Micrometric measurement.
B. Milet (Nice Observatory). Zeiss 42-cm double astrograph.
1970 April 29 (2238) Brian G. Marsden
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