Alert Notice 300: 1009+03B Supernova 2003cg in NGC 3169

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
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AAVSO ALERT NOTICE 300 (March 24, 2003)

SUBJECT: 1009+03B SUPERNOVA 2003CG IN NGC 3169

1009+03B SUPERNOVA 2003CG IN NGC 3169 (SEXTANS)

Event: Supernova

Independently Discovered By: K. Itagati, Teppo-machi, Yamagata, Japan; R. Arbour, South Wonston, Hampshire, England (IAUC No. 8097)

Discovery Magnitude: 14.4 unfiltered CCD (0.60-m f/5.7 reflector, Itagati); 14.5 unfiltered CCD (0.30-m f/6.3 reflector, Arbour) (IAUC No. 8097)

Discovery Date: March 21.51 UT (Itagati); March 22.835 UT (Arbour) (IAUC No. 8097)

R.A. of NGC 3169 (2000): 10h 14m 15s.97

Decl. of NGC 3169 (2000): +03o 02.5' 14.4" (IAUC No. 8097)

Supernova Position: 14" east and 5" north of the nucleus of NGC 3169 (IAUC No. 8097)

AAVSO Chart(s): f-scale chart

Chart links below are obsolete (11/2013); create charts using VSP at http://www.aavso.org/vsp

  • for full 300 dpi image
    http://www.aavso.org/charts/SEX/NGC_3169/SN2003CG-F.GIF
    for web browser printable image
    http://www.aavso.org/cgi-bin/shrinkwrap.pl?path=/charts/SEX/NGC_3169/SN2003CG-F.GIF

Report Object to the AAVSO as: 1009+03B SN 2003cg

Observations Reported to the AAVSO: March 13.3 UT, <19.0: CCD, K. Itagati, Teppo-machi, Yamagata, Japan; 22.3, 14.9 CCD, Itagati; 22.444, 14.3 CCD, Itagati; 22.559, 15.5 CCD through clouds, Y. Kushida, Yatsugatake South Base Observatory; 24.1368, <14.9, M. Simonsen, Macomb, MI. (All observations from IAUC No. 8097, except the last reported to AAVSO HQ by M. Simonsen.)

Notes: 1. M. Simonsen reports that supernova is currently difficult to observe with a 12-inch telescope and suggests that since the object is so close to the nucleus of NGC 3169 and since the galaxy is bright, it might become more apparent once it rises to a visual magnitude of ~14.5. 2. SN 1984 E also appeared in NGC 3169. 3. See the full announcement in International Astronomical Union Circular (IAUC) No. 8097.

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Many thanks for your valuable astronomical contributions and your efforts.

Good observing!

Janet A. Mattei
Director

Kerriann H. Malatesta
Technical Assistant

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