Central Bureau for Astronomical Telegrams
IAUC 2271: SN IN M101; 1969i
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Read IAUC 2272
Circular No. 2271
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
SUPERNOVA IN M101
K. Locher, Grut-Wetzikon, Switzerland sends the following
observations, compared with the AAVSO sequence for S Bootis.
1970 UT mv
Aug 2.90 11.3 Aug 4.88 11.4
3.94 11.1 5.88 11.0
The following position was obtained at Konkoly Observatory:
R. A. (1950) Decl.
14 01 13 +54 28.9
COMET BENNETT (1969i)
The following precise positions have been reported:
1970 UT R. A. (1950) Decl. Observer
June 4.96677 2 49 42.95 +68 25 8.2 Waterfield
15.96615 3 21 28.08 +69 48 47.6 "
22.91238 3 39 5.13 +70 38 40.8 Mrkos
23.90073 3 41 27.19 +70 45 44.4 "
24.93336 3 43 53.78 +70 53 11.1 "
25.94880 3 46 15.57 +71 00 26.6 "
26.95311 3 48 33.26 +71 07 42.3 "
27.88708 3 50 39.04 +71 14 24.1 "
29.94418 3 55 11.05 +71 29 20.7 "
July 1.96334 3 59 28.74 +71 04 9.8 "
2.97326 4 1 34.35 +71 51 38.6 "
3.03854 4 1 42.50 +71 52 7.0 "
4.97674 4 5 37.03 +72 6 35.4 "
5.03229 4 5 43.23 +72 7 0.4 "
6.96206 4 9 28.22 +72 21 38.5 "
7.01935 4 9 35.39 +72 22 3.8 "
7.95200 4 11 20.80 +72 29 8.9 "
R. Waterfield (Woolston Observatory)
A. Mrkos (Klet Observatory)
1970 August 11 (2271) Richard B. Southworth
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