Central Bureau for Astronomical Telegrams
IAUC 2255: 1968 AA; 1969i
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Read IAUC 2256
Circular No. 2255
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
1968 AA
Dr. Elizabeth Roemer reports that this interesting minor planet
(cf. IAUC 2047, 2053, etc.) has been reobserved as follows:
1970 UT R. A. (1950) Decl. Mag. Note
June 1.36094 18 39 24.31 +18 06 37.5 19.2 1
7.26634 18 35 27.30 +19 48 22.7 2
7.29065 18 35 26.13 +19 48 47.0 2
Note 1. 229-cm Steward Observatory reflector, Kitt Peak. Observers:
E. Roemer and R. McCallister. Measurer: B. Schreur.
Image decentered by 13'. Some trouble from cloud.
Note 2. 154-cm Lunar and Planetary Laboratory reflector, Catalina.
Observers: E. Roemer and R. C. Elliott. Measurer: R. C. Elliott.
The object is some 10' from the position predicted on Minor
Planet Circ. No. 3017. The following revised elements and ephemeris
have been calculated by the undersigned from 11 observations
1968 Jan. 1 to 1970 June 7, including perturbations:
T = 1970 Nov. 25.3143 ET Epoch = 1970 Nov. 30.0 ET
Peri. = 193.8561 e = 0.505125
Node = 187.9688 1950.0 a = 2.148661 AU
Incl. = 24.0179 n = 0.3129337
q = 1.063319 AU P = 3.150 years
1970/71 ET R. A. (1950) Decl. Delta r Mag.
June 23 18 19.46 +23 31.8 1.057 1.900 18.7
July 3 18 06.20 +24 57.1
13 17 52.27 +25 23.5 0.954 1.768 18.5
23 17 39.57 +24 47.0
Aug. 2 17 29.78 +23 10.7 0.898 1.631 18.3
12 17 24.18 +20 43.0
22 17 23.43 +17 35.1 0.866 1.494 18.3
Sept. 1 17 27.71 +13 56.0
11 17 37.03 + 9 53.2 0.837 1.361 18.2
21 17 51.28 + 5 32.4
Oct. 1 18 10.41 + 0 56.9 0.802 1.240 18.1
11 18 34.52 - 3 49.1
21 19 03.66 - 8 40.1 0.764 1.141 18.0
31 19 38.01 -13 27.1
Nov. 10 20 17.59 -17 56.1 0.739 1.079 17.9
20 21 02.01 -21 48.8
30 21 50.35 -24 44.6 0.742 1.065 17.9
Dec. 10 22 41.00 -26 26.9
20 23 31.86 -26 48.8 0.786 1.102 18.0
30 0 20.98 -25 53.5
Jan. 9 1 07.07 -23 54.2 0.872 1.184 18.2
19 1 49.52 -21 08.6
29 2 28.42 -17 54.2 1.001 1.295 18.5
Feb. 8 3 04.18 -14 27.3
18 3 37.26 -11 01.1 1.175 1.423 18.9
28 4 08.16 - 7 44.9
Mar. 10 4 37.28 - 4 45.7 1.393 1.558 19.3
20 5 04.90 - 2 07.4
30 5 31.27 + 0 08.1 1.649 1.695 19.8
Apr. 9 5 56.57 + 2 00.4
19 6 20.88 + 3 30.0 1.933 1.830 20.2
29 6 44.31 + 4 38.3
May 9 7 06.93 + 5 26.8 2.232 1.961 20.5
Mag. = 16.5 + 5 log Delta + 5 log r + 0.03 (phaseangle)
COMET BENNETT (1969i)
Further precise positions have been reported as follows:
1970 UT R. A. (1950) Decl. Mag. Observer
Apr. 15.11758 23 16 17.57 +47 04 47.3 Debehogne
15.11827 23 16 17.52 +47 04 49.7 "
15.11897 23 16 17.66 +47 04 51.9 "
15.11966 23 16 18.19 +47 04 54.0 "
15.12035 23 16 18.08 +47 04 57.2 "
15.12104 23 16 18.29 +47 05 01.3 "
15.12659 23 16 19.78 +47 05 28.3 "
15.12791 23 16 20.25 +47 05 32.9 "
15.12999 23 16 20.66 +47 05 42.4 "
21.08197 23 44 41.96 +53 19 25.8 "
21.08359 23 44 42.41 +53 19 30.6 "
26.l2300 0 09 06.70 +57 05 01.9 "
26.12439 0 09 07.05 +57 05 05.2 "
26.12578 0 09 07.51 +57 05 08.0 "
26.12786 0 09 08.03 +57 05 12.4 "
June 8.72486 3 01 06.84 +68 54 51.9 8 Urata
H. Debehogne (Royal Observatory, Uccie). 40-cm double astroqraph.
Measurer: G. Roland. Communicated by J. Dommanget.
T. Urata (Fujikan Center Observatory, Nihondaira, Shimizu,
Shizuoka). 10.2-cm f/5.4 camera.
1970 June 19 (2255) Brian G. Marsden
Read IAUC 2256
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