SIMBAD references

C. Aspin, Institute for Astronomy, University of Hawaii (UH), reports that an optical spectrum of V1647 Ori was obtained on Aug. 30 UT using the UH 2.2-m telescope (+ SNIFS integral-field spectrograph). Using the Spitzer flux-to-magnitude converter (http://ssc.spitzer.caltech.edu/tools/magtojy/) and the flux at 650.0 nm from the calibrated SNIFS spectrum (2.1 x 10**-16 erg s**-1 cm**-2 A**-1) suggests that, on this date, V1647 Ori had a Johnson R magnitude of 17.3. This is around 6 magnitudes brighter than the measured quiescent brightness of r' = 23.3. The spectrum has a spectral resolution of around R = 1300 and shows a very red continuum with strong H_alpha emission. The H_alpha emission line exhibited a P-Cyg profile with a blue-shifted absorption trough extending to around 500 km/s from the line rest wavelength. In addition, the red Ca II triplet lines were strongly in emission. McNeil's nebula (cf. IAUC 8284, 8354), illuminated by V1647 Ori, was also strongly visible. This confirms that V1647 Ori has undergone another strong outburst (cf. IAUC 8968) similar to the one observed in 2003, the previous event lasting around 26 months.