Central Bureau for Astronomical Telegrams
IAUC 1979: 1965i; 1966c
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Read IAUC 1980
Circular No. 1979
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
PERIODIC COMET TEMPEL-TUTTLE (1965i)
Dr. J. Schubart, Astronomisches Rechen-Institut, writes: "Dr.
E. Geyer has remeasured the two plates of P/Tempel-Tuttle obtained
at Palomar in 1965. The following positions, in which the times
have been corrected too, replace the preliminary ones on IAUC 1936:
1965 UT R.A. (1950) Decl.
June 30.45174 2 37 28.66 + 1 19 25.9
July 26.45903 1 45 54.43 -16 37 30.0
Only two other observations of the comet were obtained in 1965 (see
IAUC 1926). Observing conditions were favorable for the northern
hemisphere early in 1965, however, before the prediction was availanle.
The accompanying ephemeris, which has been adjusted using the
known observations of position and brightness, is provided in the
hope that observers may examine their plates for possible further
positions of the comet.
1965 ET R. A. (1950) Decl. Delta r Mag.
Jan. 30 12 17.4 +36 35 0.88 1.70 16.2
Feb. 1 12 07.4 +39 30
3 11 55.1 +42 38
5 11 39.7 +45 58
7 11 20.5 +49 24
9 10 56.4 +52 49 0.71 1.59 15.3
11 10 26.4 +56 00
13 9 49.7 +58 43
15 9 06.8 +60 39
17 8 19.9 +61 35
19 7 32.9 +61 27 0.68 1.48 14.7
21 6 49.7 +60 22
23 6 12.7 +58 34
25 5 42.3 +56 19
27 5 17.8 +53 53
Mar. 1 4 58.2 +51 24 0.82 1.37 14.6
3 4 42.4 +48 59
5 4 29.6 +46 40
7 4 19.1 +44 30
9 4 10.4 +42 30
11 4 03.1 +40 38 1.03 1.27 14.6
13 3 57.0 +38 55
15 3 51.7 +37 21
17 3 47.2 +35 53
19 3 43.3 +34 33
21 3 39.9 +33 18 1.26 1.18 14.6
23 3 36.9 +32 09
25 3 34.2 +31 04
27 3 31.8 +30 04
29 3 29.7 +29 08
31 3 27.8 +28 15 1.49 1.10 14.5
Mag. = 13.0 + 5 log Delta + 15 log r
COMET BARBON (1966c)
Dr. L. Pajdusakova, Skalnate Pleso Observatory, communicates
the following observations with the 12-inch f/5 astrograph by
M. Antal:
1966 UT R.A. (1950) Decl.
Sept. 4.87361 0 46 47.55 - 5 29 17.6
4.89028 0 46 46.99 - 5 29 36.6
12.89583 0 44 12.03 - 7 41 24.3
12.92396 0 44 11.29 - 7 41 50.3
The following improved parabolic elements have been derived by
B. G. Marsden and K. Aksnes, Smithsonian Astrophysical Observatory,
from 51 observations made between August 19 and October 7:
T = 1966 Apr. 17.7764 ET Peri. = 136.1354
Node = 167.0026 1950.0
q = 2.018380 AU Incl. = 28.7331
1966/67 R. A. (1950) Decl. Delta r Mag.
Nov. 11 0 25.62 -16 38.8 2.415 3.131 13.4
21 0 26.90 -16 39.7
Dec. 1 0 29.77 -16 22.5 2.814 3.297 13.9
11 0 34.08 -15 51.0
21 0 39.65 -15 08.7 3.250 3.465 14.5
31 0 46.30 -14 18.5
Jan. 10 0 53.84 -13 22.8 3.696 3.634 14.9
20 1 02.13 -12 23.5
30 1 11.02 -11 22.5 4.132 3.805 15.4
Feb. 9 1 20.38 -10 21.0
19 1 30.11 - 9 20.2 4.537 3.976 15.8
Mar. 1 1 40.10 - 8 21.3
11 1 50.28 - 7 25.0 4.895 4.147 16.1
Mag. = 6.5 + 5 log Delta + 10 log r
1966 November 1 (1979) Brian G. Marsden
Read IAUC 1980
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