Central Bureau for Astronomical Telegrams
IAUC 2281: N Sct 1970; 1970g
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Circular No. 2281
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 SCUTI 1970
Mr. A. Kamo, Wakayama, Japan, reports a prediscovery observation
by M. Ishiguro, Toyokawa. On a 30-second exposure with a 35-mm
camera and Tri-X film obtained on July 28.676 UT the nova
appears at magnitude about 8.0.
Dr. D. P. Elias, Athens Observatory, provides a position:
R. A. (1950) Decl.
18 42 59.92 -08 36 15.0
COMET ABE (1970g)
The following precise positions have been reported:
1970 UT R. A. (1950) Decl. m1 Observer
Aug. 24.91951 0 28 40.31 +67 37 46.1 Elias
25.60989 0 17 21.78 +68 38 51.4 Seki
25.61475 0 17 16.30 +68 39 15.8 "
26.58559 23 58 58.69 +70 01 14.5 "
26.58906 23 58 54.26 +70 01 30.7 "
28.84466 23 03 41.69 +72 41 31.8 Elias
Sept. 2.85368 20 12 47.50 +73 21 49.4 "
6.87464 18 27 36.93 +67 59 49.1 "
7.81041 18 11 02.72 +66 19 31.5 5.0 Milet
9.80437 17 43 09.92 +62 31 40.3 Elias
14.82160 17 00 58.03 +52 43 35.7 "
15.95929 16 54 47.08 +50 35 41.6 5.0 Harwood
18.78245 16 42 34.54 +45 34 20.3 Milet
21.77980 16 33 07.32 +40 42 23.6 "
21.90860 16 32 46.38 +40 30 30.9 "
22.79860 16 30 29.78 +39 09 56.9 Mrkos
22.81539 16 30 27.48 +39 08 28.4 5.5 Waterfield
23.44595 16 28 57.20 +38 13 06.1 Seki
23.45990 16 28 55.10 +38 11 51.1 "
23.78062 16 28 11.75 +37 44 06.2 Mrkos
25.81943 16 24 01.40 +34 55 46.9 Milet
26.43898 16 22 53.53 +34 07 03.0 Seki
26.45293 16 22 51.95 +34 05 58.8 "
27.78213 16 20 38.28 +32 25 34.9 Mrkos
28.81272 16 19 03.97 +31 11 10.6 "
29.45006 16 18 09.02 +30 26 37.0 Seki
29.45706 16 18 08.40 +30 26 09.1 "
29.78811 16 17 41.40 +30 03 26.4 Mrkos
Oct.5.42396 16 11 25.05 +24 17 34.8 Seki
5.44410 16 11 23.85 +24 16 27.7 "
6.41146 16 10 32.59 +23 24 03.1 "
6.41343 16 10 32.43 +23 23 56.8 "
O. P. Elias (Athens Observatory). 40-cm reflector, although some
observations are with the 63-cm reflector at the Penteli station.
T. Seki (Kochi Observatory).
B. Milet (Nice Observatory). Tail about 1o long on Sept. 7.
Margaret Harwood and R. L. Waterfield (Woolston Observatory). Measurer:
R. L. Waterfield. A 30-min exposure on Sept. 21.8 by
R. H. S. South and R. L. Waterfield showed a diffuse, structureless,
forked tail, the main branch 1.5o long in p.a. 80o and the
fainter branch 0.5o long in p.a. 65o. The outer coma was 5' in
diameter and the more condensed part 2' in diameter. m1 = 5.5.
A. Mrkos (Klet Observatory)
The following parabolic elements are from 70 observations July
5 to October 6, no residual being larger than 3":
T = 1970 Oct. 20.7005 ET Peri. = 96.5818
Node = 21.0005 1950.0
q = 1.112511 AU Incl. = 126.7143
1970/71 ET R. A. (1950) Decl. Delta r m1 m2
Oct. 31 15 59.12 + 8 12.0 1.813 1.125 6.1 13.8
Nov. 5 15 58.04 + 6 07.2
10 15 57.14 + 4 14.0 1.970 1.160 6.4 14.1
Dec. 10 15 53.22 - 4 37.1
20 15 51.33 - 7 02.0 2.198 1.468 8.2 15.4
30 15 48.36 - 9 19.5
Jan. 9 15 43.63 -11 33.2 2.094 1.677 9.0 15.8
19 15 36.33 -13 46.1
29 15 25.39 -15 59.9 1.898 1.900 9.6 16.2
Feb. 8 15 09.52 -18 14.0
18 14 47.36 -20 23.3 1.680 2.129 10.0 16.4
28 14 17.97 -22 15.1
Mar.10 13 41.79 -23 28.9 1.550 2.360 10.5 16.7
20 13 01.68 -23 45.2
30 12 22.35 -23 00.2 1.627 2.589 11.3 17.2
Apr. 9 11 48.22 -21 32.1
19 11 21.38 -19 48.0 1.937 2.816 12.2 17.9
29 11 01.80 -18 08.8
May 9 10 48.39 -16 45.7 2.405 3.040 13.1 18.7
m1 = 4.0 + 5 log Delta + 15 log r; m2 = 12.0 + 5 log Delta + 10 log r
1970 October 20 (2281) Brian G. Marsden
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