THE ASTRONOMER Electronic Circular No 432 1990 July 20 19.30UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074
Telex: 94082518 Answerback: TAGUY Microlink: MAG60138
JANET:GMH @ UK.AC.CAM.ASTRONOMY.STARLINK or GUYH@UK.AC.SUSSEX.CLUSTER
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COMET TSUCHIYA-KIUCHI (1990i)
Preliminary parabolic elements from 11 observations July 13-19:
T 1990 Sept 28.6480 E.T. w 180.83000 )
e 1.00000000 O 330.05900 ) 1950.0
q 1.0943000 A.U. i 143.75800 )
Source: IAUC5055 Positions are geocentric
Ephemeris:
m = 5.5 + 5.0 log R + 10.0 log r
Date R.A. (1950) Dec. R r Elong Mag. Motion
h m o ' (AU) (AU) o "/hr P.A.
1990 July
19.00 12 19.58 +29 0.1 1.799 1.577 60.8 8.8 89 228
20.00 12 17.61 +28 36.1 1.811 1.566 59.6 8.7 88 227
21.00 12 15.70 +28 12.3 1.823 1.555 58.5 8.7 86 226
22.00 12 13.85 +27 48.7 1.835 1.545 57.3 8.7 84 226
23.00 12 12.06 +27 25.2 1.847 1.534 56.2 8.7 83 225
24.00 12 10.33 +27 2.0 1.858 1.524 55.0 8.7 81 224
25.00 12 8.66 +26 38.9 1.870 1.513 53.9 8.7 80 224
26.00 12 7.04 +26 15.9 1.882 1.503 52.8 8.6 78 223
27.00 12 5.48 +25 53.2 1.893 1.493 51.6 8.6 77 223
28.00 12 3.96 +25 30.6 1.904 1.482 50.5 8.6 76 222
29.00 12 2.49 +25 8.3 1.915 1.472 49.4 8.6 74 221
30.00 12 1.06 +24 46.1 1.926 1.462 48.3 8.6 73 221
31.00 11 59.68 +24 24.1 1.937 1.452 47.1 8.6 72 220
1990 Aug
1.00 11 58.33 +24 2.3 1.948 1.442 46.0 8.5 71 220
2.00 11 57.03 +23 40.7 1.958 1.432 44.9 8.5 70 219
3.00 11 55.76 +23 19.2 1.968 1.422 43.8 8.5 69 219
4.00 11 54.53 +22 58.0 1.978 1.412 42.7 8.5 68 218
5.00 11 53.33 +22 36.9 1.988 1.403 41.7 8.5 67 218
6.00 11 52.17 +22 15.9 1.998 1.393 40.6 8.4 66 217
7.00 11 51.03 +21 55.2 2.007 1.384 39.5 8.4 65 217
8.00 11 49.93 +21 34.6 2.016 1.374 38.4 8.4 64 217
9.00 11 48.85 +21 14.1 2.025 1.365 37.3 8.4 63 216
10.00 11 47.80 +20 53.8 2.033 1.356 36.3 8.4 62 216
11.00 11 46.77 +20 33.7 2.042 1.347 35.2 8.3 62 215
12.00 11 45.77 +20 13.7 2.050 1.338 34.1 8.3 61 215
13.00 11 44.79 +19 53.8 2.057 1.329 33.1 8.3 60 215
14.00 11 43.83 +19 34.1 2.065 1.320 32.0 8.3 60 214
15.00 11 42.89 +19 14.5 2.072 1.311 31.0 8.3 59 214
16.00 11 41.98 +18 55.0 2.079 1.303 29.9 8.2 58 214
17.00 11 41.08 +18 35.6 2.085 1.294 28.9 8.2 58 213
SUPERNOVA 1990R IN UGC 11699
J. Mueller reports her discovery of a supernova (mag about 17.5) in
UGC 11699 (R.A. = 21h09m.9, Decl. = +12 24', equinox 1950.0). The
supernova, located 10".1 east of the galaxy's center, was found on
a blue plate exposed on June 26 UT with the 1.2-m Oschin Telescope
in the course of the second Palomar Sky Survey. A. V. Filippenko
and J. C. Shields, University of California, Berkeley, report that
CCD spectra (range 390-980 nm, resolution 1-2 nm), obtained on
July 17 UT with the Shane 3-m reflector at Lick Observatory, show
SN 1990R to be of type Ia, probably 1-2 months past maximum
brightness.
IAUC 5054
Guy M Hurst