Central Bureau for Astronomical Telegrams
IAUC 3232: FABRY-PEROT MEASUREMENT OF RETROGRADE ROTATION OF VENUS' ATMOSPHERE; U Gem; 1977k; 1977r
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Circular No. 3232
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
FABRY-PEROT MEASUREMENT OF RETROGRADE ROTATION OF VENUS' ATMOSPHERE
K. Serkowski, J. E. Frecker, C. E. KenKnight and E. H. Roland,
Lunar and Planetary Laboratory, report: "Retrograde rotation of
Venus' atmosphere was confirmed by observations made on May 21 and
22 UT with the 154-cm reflector and a Fabry-Perot spectrometer that
was built to search for extrasolar planets. Using a diaphragm of
diameter 3" the difference in radial velocity between measurements
made internally tangent to the terminator and then made bisecting
the limb (both on Venus' equator) was found to be (+100 +/- 15) m s**-1.
The value will be diminished by about 10 m s**-1 when allowance is
made for the effect of solar rotation."
U GEMINORUM
J. Mattei, AAVSO, communicates the following visual magnitudes
by J. Morgan, Prescott, AZ: June 13.17 UT, [12.4; 15.18, 9.3.
PERIODIC COMET AREND-RIGAUX (1977k)
Further precise positions have been reported as follows:
1977/78 UT R. A. (1950) Decl. m2 Observer
Oct. 14.55374 2 34 00.63 -23 04 07.1 15.8 Gilmore
14.60669 2 33 59.29 -23 04 49.4 "
Jan. 3.61736 2 25 19.95 -11 23 01.0 Candy
28.56042 3 01 09.88 + 1 32 58.7 "
Mar. 2.53264 4 30 33.65 +17 24 16.2 Verveer
12.43715 5 00 06.84 +21 03 03.5 Natori
A. C. Gilmore (Carter Observatory). Measurer: P. M. Kilmartin.
M. P. Candy and A. Verveer (Perth Observatory, Bickley).
A. Natori (JCPM Yakiimo Station). From Nihondaira Obs. Circ. No.970.
PERIODIC COMET KOJIMA (1977r)
Precise positions obtained by H. Kosai with the 105-cm Schmidt
telescope at Tokyo Observatory's Kiso Station:
1978 UT R. A. (1950) Decl. m1
Jan. 7.54664 6 38 08.96 +22 01 42.1 18
Mar. 2.58619 6 24 31.12 +22 37 44.2 18
1978 June 22 (3232) Brian G. Marsden
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