Circular No. 5825

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION

Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.

Telephone 617-495-7244/7440/7444 (for emergency use only) TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505

MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)

1993 MO

Ephemeris from the orbital elements on IAUC 5824:

1993 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  V
June 22 17^{h}12.^{m}34 +17^{o}59.^{′}2 0.323 1.271 136.^{o}8 33.^{o}2 15.5
24 17 10.19 +16 03.6 0.318 1.270 137.8 32.5 15.4
26 17 08.13 +14 00.5 0.313 1.269 138.7 31.9 15.3
28 17 06.16 +11 50.1 0.309 1.268 139.6 31.3 15.3
30 17 04.33 + 9 33.2 0.306 1.267 140.3 30.8 15.3
July 2 17 02.64 + 7 10.4 0.303 1.266 140.8 30.5 15.2
4 17 01.11 + 4 42.5 0.302 1.266 141.2 30.2 15.2
6 16 59.75 + 2 10.6 0.301 1.266 141.4 30.1 15.2
8 16 58.59 − 0 24.4 0.301 1.266 141.3 30.1 15.2
10 16 57.64 − 3 01.2 0.302 1.266 141.1 30.3 15.2
12 16 56.91 − 5 38.7 0.304 1.266 140.6 30.7 15.2
14 16 56.41 − 8 15.8 0.306 1.266 139.9 31.2 15.3
16 16 56.16 −10 51.3 0.310 1.267 139.0 31.8 15.3
18 16 56.17 −13 24.3 0.314 1.267 138.0 32.5 15.4
20 16 56.44 −15 53.7 0.320 1.268 136.8 33.3 15.4
22 16 56.99 −18 18.8 0.326 1.269 135.6 34.1 15.5
24 16 57.82 −20 39.0 0.333 1.270 134.2 35.0 15.6
26 16 58.94 −22 53.8 0.340 1.272 132.8 35.8 15.6
28 17 00.34 −25 02.8 0.349 1.273 131.4 36.7 15.7
30 17 02.02 −27 05.8 0.358 1.275 130.0 37.6 15.8
Aug. 1 17 03.99 −29 02.6 0.367 1.277 128.6 38.4 15.9

SUPERNOVA 1993S IN ANONYMOUS GALAXY M. Della Valle and E. Cappellaro, European Southern Observatory,

report: “A low-resolution spectrogram (range 400-840 nm, resolution ∼ 2 nm) was obtained on June 28.3 UT with the New Technology Telescope (+ EMMI) at La Silla. The spectrum is dominated by strong Hα emission with a P-Cyg profile, characteristic of type-II supernovae. The expansion velocity derived from the difference between the rest wavelength in the galaxy’s frame and the minimum of the P-Cyg absorption is ∼ 9000 km/s.”

1993 June 28 Daniel W. E. Green