Central Bureau for Astronomical Telegrams
IAUC 2295: PSR 0740-28; P/SCHWASSMANN-WACHMANN 1; Obs OF COMETS; 1970l
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Read IAUC 2296
Circular No. 2295
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
PSR 0740-28
A cable from the Laboratorio Nazionale di Radioastronomia,
Bologna, reports that Salter has discovered a pulsar at 408 MHz in
the position R.A. = 7h40m48s +/- 2s, Decl. = -28o +/- 0.5o. The
pulse period is 0s167, and the dispersion measure is 80 +/- 15.
The pulse half-power width is less than or equal to 10 ms.
PERIODIC COMET SCHWASSMANN-WACHMANN 1
The following ephemeris, by P. Herget, is from Publ. Cincinnati
Obs. (1968) No. 23.
1971 TT R. A. (1950) Decl. Delta r
Jan. 29 16 55.87 -30 56.2 6.568 6.019
Feb. 8 17 02.75 -31 13.9 6.427 6.010
18 17 08.87 -31 30.9 6.273 6.001
28 17 14.12 -31 47.3 6.112 5.992
Mar. 10 17 18.33 -32 03.1 5.945 5.983
20 17 21.43 -32 18.2 5.778 5.975
30 17 23.32 -32 32.5 5.614 5.966
Apr. 9 17 23.90 -32 45.5 5.457 5.957
19 17 23.20 -32 56.9 5.312 5.948
29 17 21.20 -33 05.8 5.184 5.940
May 9 17 18.03 -33 11.6 5.076 5.931
19 17 13.90 -33 13.5 4.991 5.923
29 17 09.03 -33 10.9 4.934 5.914
June 8 17 03.77 -33 03.7 4.904 5.906
18 16 58.47 -32 52.1 4.904 5.897
28 16 53.50 -32 36.6 4.933 5.889
July 8 16 49.18 -32 18.3 4.989 5.880
18 16 45.80 -31 58.4 5.070 5.872
28 16 43.52 -31 38.2 5.172 5.864
Aug. 7 16 42.48 -31 18.8 5.291 5.856
17 16 42.72 -31 00.9 5.424 5.848
27 16 44.23 -30 45.2 5.566 5.839
Sept. 6 16 46.98 -30 31.9 5.714 5.831
16 16 50.87 -30 21.0 5.862 5.823
26 16 55.82 -30 12.4 6.007 5.816
Oct. 6 17 01.72 -30 05.6 6.146 5.808
16 17 08.47 -30 00.3 6.276 5.800
OBSERVATIONS OF COMETS
Mr. M. P. Candy, Perth Observatory, sends the following
positions of comets 1970b (P/Pons-Winnecke), 1970c (P/Kopff), 1970d
(P/d'Arrest) and 1970e (P/Ashbrook-Jackson). They replace some of
the positions that appeared on IAUC 2275, 2276, 2278 and 2283. The
July 7 position of comet 1970b (IAUC 2278) is to be discarded.
Comet 1970 UT R.A. (1950) Decl. Observer
1970b July 27.54444 14 19 40.89 -12 33 23.0 Gans
1970c Aug. 13.48611 14 20 49.19 -10 09 30.4 Candy
13.49236 14 20 49.91 -10 09 39.2 "
1970d Aug. 11.90104 4 34 53.11 + 6 21 16.7 Punko
1970e July 30.60486 18 11 35.99 -41 26 55.4 Candy
Aug. 4.64375 18 08 52.46 -41 03 42.0 Harris
5.61667 18 08 26.17 -40 58 50.9 Gans
PERIODIC COMET ENCKE (1970l)
The following precise positions have been reported:
1970 UT R.A. (1950) Decl. m1 Observer
Nov. 17.82249 22 02 53.17 +19 47 12.7 Mrkos
23.72878 21 32 42.24 +15 44 38.4 "
25.75811 21 22 44.59 +14 17 32.1 "
25.85069 21 22 16.91 +14 13 34.6 Antal
25.86250 21 22 13.67 +14 13 02.2 "
26.75694 21 17 54.32 +13 34 07.9 "
26.80992 21 17 37.91 +13 31 44.4 Mrkos
27.76694 21 13 03.18 +12 49 48.8 "
28.69653 21 08 36.36 +12 08 59.5 Antal
28.72847 21 08 26.61 +12 07 27.6 "
28.75035 21 08 27.46 +12 07 17.7 Mrkos
30.73898 20 58 54.3 +10 37 48 9.5 Locher
Dec. 4.69288 20 40 15.46 + 7 36 32.6 Mrkos
5.38646 20 36 58.01 + 7 04 20.7 8.5 Seki
5.39063 20 36 56.93 + 7 04 08.6 "
6.70553 20 30 40.56 + 6 01 51.8 Mrkos
6.72887 20 30 33.2 + 6 00 46 9.5 Locher
A. Mrkos (Klet Observatory).
M. Antal (Skalnate Pleso Obs.). Communicated by L. Pajdusakova.
K. Locher (Grut-Wetzikon, Switzerland).
T. Seki (Kochi Observatory).
1970 December 29 (2295) Brian G. Marsden
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