Central Bureau for Astronomical Telegrams
IAUC 3519: H 2252-035; 1980l; 29999-221-3528
The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).
Read IAUC 3520
Circular No. 3519
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 617-864-5758
H 2252-035
G. Williams and M. Johns, University of Michigan and McGraw-Hill
Observatory, report: "Spectrophotometric observations reveal a
velocity curve, determined from the H-alpha emission feature, with a
semiamplitude of 151 +/- 10 km/s and a displacement of -18 +/- 10 km/s.
Combination of these observations with those of Patterson and Price
(preprint; see also IAUC 3511) gave a more accurately determined
period of 0.14959 +/- 0.00003 day. Linear-polarization measurements
made on Sept. 1 and 2 were folded with the 805-s x-ray, 858.7-s optical
and above 0.14959-day orbital periods. No significant modulation
was found at any of these periods to a limit of 0.2 percent
in the polarization."
COMET RUSSELL (1980l)
Continuation to the ephemeris on IAUC 3513:
1980 ET R. A. (1950) Decl. Delta r m1
Sept.28 2 39.88 -48 49.7
Oct. 8 2 10.30 -54 47.0 2.220 2.823 16.7
18 1 30.24 -59 28.9
28 0 42.46 -62 24.5 2.321 2.720 16.7
Nov. 7 23 54.03 -63 29.7
17 23 12.49 -63 08.6 2.537 2.629 16.7
27 22 41.18 -61 56.4
Dec. 7 22 19.54 -60 22.4 2.782 2.552 16.8
17 22 05.53 -58 44.7
27 21 57.04 -57 13.6 2.988 2.492 16.8
29999-221-3528
If the middle digit of the middle group of figures on your
address label is a 2, then the last four figures show the IAUC No. up
to which you have paid. If this number is 3528 or less, fewer than
ten issues remain in your subscription, and renewal is now desirable
to ensure continuity of service. The special renewal rate is
normally $12.00 for 50 issues or $24.00 for 100. The regular rate,
for billed subscribers, is $40.00 for 100 issues, and the last four
figures on the address label show the month of billing. Special
subscribers are advised that missing issues can be supplied only at
the regular rate of 40c per Circular.
1980 September 26 (3519) Brian G. Marsden
Read IAUC 3520
Our Web policy. Index to the CBAT/MPC/ICQ pages.
