Central Bureau for Astronomical Telegrams
IAUC 4005: 1984s; EDITORIAL NOTICE
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Read IAUC 4006
Circular No. 4005
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
COMET SHOEMAKER (1984s)
The following precise positions have been reported:
1984 UT R.A. (1950.0) Decl. m1 Observer
Nov. 2.70694 1 57 51.90 +15 56 40.6 12 Seki
2.72187 1 57 52.03 +15 56 17.3 "
3.15631 1 57 56.96 +15 45 16.9 14 McCrosky
3.74896 1 58 01.89 +15 30 02.4 13 Seki
T. Seki (Geisei). Communicated by S. Nakano.
R. E. McCrosky (Oak Ridge Observatory). 0.40-m astrograph.
Parabolic orbital elements determined by S. Nakano, Tokyo,
from six observations Oct. 25 to Nov. 3:
T = 1985 Jan. 4.088 ET Peri. = 229.574
Node = 222.687 1950.0
q = 1.21462 AU Incl. = 14.157
1984 ET R.A. (1950.0) Decl. p r m1
Oct. 27 1 57.15 +18 28.3 0.614 1.605 12.0
Nov. 6 1 58.48 +14 29.9
16 2 02.20 + 9 19.0 0.464 1.430 10.9
26 2 10.34 + 3 13.4
Dec. 6 2 24.90 - 3 11.6 0.389 1.296 10.1
EDITORIAL NOTICE
We are pleased to announce that, effective Nov. 11, there
will be a reduction in the basic daily charge to subscribers to
our 'dial-in' computer service from 30c to 20c. The basic charge
allows the user to leave messages and gives him access by modem to
these Circulars as soon as they are issued. The charge for access
to files of orbital elements and the calculation of ephemerides
will in the future be a separate one of 16c per second of CPU
time. In practice, this means a significant net reduction in cost
to those who have no more than moderate use of the orbit/ephemeris
feature, while the effective charge for the heaviest users might
average 40c per day. Subscribers are requested to pay their
outstanding bills as issued; any adjustment resulting from the change
in charge structure will be made on subsequent bills. Any
subscriber to the printed Circulars is entitled to subscribe also to
the computer service; please write for further details.
1984 November 5 (4005) Brian G. Marsden
Read IAUC 4006
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