Central Bureau for Astronomical Telegrams
IAUC 2867: Occn OF 4C -06.34 BY VENUS; 1975j; AO 0235+164; Corrs
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Read IAUC 2868
Circular No. 2867
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
OCCULTATION OF 4C -06.34 BY VENUS
G. E. Taylor, H.M. Nautical Almanac Office, writes that recent
measures, at Gainesville, Florida, and Cambridge, England, both
indicate that the assumed declination of the radio source 4C -06.34
is in error by about six times the quoted probable error of 5".
Consequently, the occultation by Venus, predicted as being
observable from North and South America on Nov. 30 (Handb. Br. Astron.
Assoc. for 1975), will not be observable from anywhere on the earth.
COMET MORI-SATO-FUJIKAWA (1975j)
The following precise positions have been reported:
1975 UT R. A. (1950) Decl. m1 Observer
Oct. 30.18495 8 36 39.98 -15 30 07.8 8.9 Milet
30.20122 8 36 40.40 -15 31 04.1 "
Nov. 2.81771 8 38 06.78 -19 07 45.7 9 Tomita
2.82014 8 38 06.93 -19 07 55.3 "
3.72503 8 38 25.51 -20 04 24.6 Koishikawa
3.77778 8 38 26.49 -20 07 41.5 "
3.80868 8 38 26.88 -20 09 40.5 9 Tomita
3.81111 8 38 26.71 -20 09 50.5 "
B. Milet (Nice Observatory). Very good images.
K. Tomita (Tokyo Astronomical Observatory, Dodaira Station).
M. Koishikawa (Sendai Observatory, Ayashi Station). 20-cm f/5.5
reflector. From Nihondaira Obs. Circ. No. 714.
The following improved orbital elements, by the undersigned,
are from 47 observations Oct. 6 to Nov. 3.
T = 1975 Dec. 25.7922 ET Peri. = 246.1973
Node = 277.9880 1950.0
q = 1.604701 AU Incl. = 91.5965
1975/76 ET R. A. (1950) Decl. Delta r m1
Dec. 14 7 54.19 -69 23.9 1.395 1.613 8.3
19 7 21.5 -74 22.9
24 6 26.0 -78 20.5 1.486 1.605 8.4
29 4 57.8 -80 44.6
Jan. 3 3 12.1 -81 05.1 1.604 1.609 8.6
8 1 48.6 -79 44.3
13 0 56.9 -77 36.9 1.735 1.624 8.8
18 0 26.2 -75 17.8
23 0 07.4 -73 01.9 1.865 1.650 9.0
Feb. 2 23 47.81 -68 58.6
12 23 39.66 -65 39.8 2.089 1.731 9.5
22 23 36.58 -63 03.2
Mar. 3 23 35.92 -61 05.1 2.234 1.847 9.9
13 23 36.26 -59 42.8
23 23 36.66 -58 54.6 2.288 1.988 10.3
Apr. 2 23 36.39 -58 40.0
12 23 34.61 -58 59.5 2.258 2.148 10.6
22 23 30.30 -59 53.2
May 2 23 22.07 -61 20.9 2.169 2.320 10.8
12 23 07.74 -63 19.1
22 22 44.21 -65 37.5 2.065 2.502 11.1
June 1 22 07.39 -67 54.3
11 21 14.40 -69 29.5 2.009 2.688 11.3
21 20 09.78 -69 34.6
July 1 19 07.63 -67 45.4 2.066 2.878 11.7
m1 = 5.5 + 5 log Delta + 10 log r
Selected total visual magnitude estimates: Nov. 1.37 UT, 8.7
(J. Bortle, Brooks Observatory, 10 x 50 binoculars; suspected tail
12' long in p.a. 330o); 5.34, 8.5 (Bortle); 8.46, 8.8 (P. Maley,
Houston, Texas, 13-cm refractor); 11.45, 8.7 (Maley); 13.72, 8.5
(B. Sumner, Windsor, Queensland, 15-cm f/4 reflector, 27 x).
AO 0235+164
T. D. Kinman, Kitt Peak National Observatory; and G. H. Rieke,
University of Arizona, report that the BL Lac-type object AO 0235
+164 (Spinrad and Smith 1975, Astrophys. J. 201, 275) is undergoing
an outburst. On Oct. 3 and Nov. 14 UT it was respectively at V =
15.51 and V ~ 14.3, compared with the previous range of magnitude
17.5 to 19.5. Current infrared magnitudes are K = 9.5 and N = 4.9.
CORRIGENDA
IAUC 2769: Comet Smirnova-Chernykh (1975e). In the Apr. 4 observation,
for +23 52 45.5 read +23 52 54.5.
IAUC 2773: Comet van den Bergh (1974g). On Jan. 23 m2 should read
19.6, not 9.6.
IAUC 2855: Probable New Satellite of Jupiter. L. M. Vaughn should
be added as assisting with the Steward Observatory positions.
IAUC 2861 and 2862: Comet Suzuki-Saigusa-Mori (1975k) and Comet
Mori-Sato-Fujikawa (1975j). The observations on Oct. 21, attributed
to T. Seki, were made by T. Kurosaki (Utsunomiya). See
Nihondaira Obs. Circ. No. 714; Yamamoto Circ. Nos. 1817 and 1818.
IAUC 2863: Coordinates of Observatories. For JCPM Ayashi Station
read Sendai Observatory, Ayashi Station.
1975 November 19 (2867) Brian G. Marsden
Read IAUC 2868
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