SIMBAD references

Sugerman, again on behalf of the SEEDS collaboration, also reports the detection of the type-IIP supernova 2004dj in archival Spitzer images of NGC 2403 taken by the SINGS Legacy project and by S. Van Dyk et al. A source is detected in all IRAC bands at R.A. = 7h37m17s.04, Decl. = +65o35'57".9 (equinox 2000.0; ± 0".3 in each coordinate), in close agreement with the optical position (IAUC 8377). The epochs (UT), days since discovery, and flux densities (mJy) from the pipeline-calibrated images at 3.6, 4.5, 5.8, and 8.0 microns are: 2004 Oct. 7.1, 68, 10.3 ± 1.0, 7.9 ± 0.6, 6.9 ± 0.3, 4.2 ± 0.2; Oct. 12.1, 73, 7.6 ± 0.9, 8.8 ± 0.4, 5.9 ± 0.2, 3.4 ± 0.2; Nov. 1.1, 93, 4.8 ± 0.4, 7.0 ± 0.4, 4.6 ± 0.2, 2.5 ± 0.1. The supernova is marginally detected in the Mid-Infrared Photometry and Spectrograph 24-micron imager in the wings of a bright, extended region located 19".5 away at p.a. 152 deg. Dates of observation, days after discovery, and estimated flux densities (mJy) are: 2004 Oct. 12.9, 73, 0.5 ± 0.3; Oct. 14.5, 75, 0.8 ± 0.3; Nov. 6.7, 98, 0.8 ± 0.3. Follow-up observations should continue at all wavelengths to monitor these rapid (< 5 days) variations.