November 19, 2007: Further to AAVSO Special Notice #81, precise coordinates for the optical counterpart of the new X-ray source XMMSL1 J070542.7-381442 [V598 Pup] (Read et al., ATEL 1282) have been determined. The (J2000) coordinates are
RA 07:05:42.51 (+/- 0.05 arcsec) , Dec -38:14:39.3 (+/- 0.08 arcsec)
Coordinates were determined by A. Henden using V-band images supplied by S. Dvorak.
This object has now been entered into the AAVSO Variable Star Index (VSX) as: VSX J070542.5-381439
The VSX information page may be reached via the following URL: http://www.aavso.org/vsx/index.php?view=detail.top&oid=161061
Charts may be generated with VSP using the following URL: http://www.aavso.org/observing/charts/vsp/index.html?pickname=VSX%20J070542.5-381439
A full sequence for this object is not yet available. The bright star HD 53893 (RA 07:05:00.720 , Dec -38:20:58.66 ) with V = 9.449 (Kharchenko 2001) may be used as a photometric comparison star. As stated in Special Notice #81, unfiltered photometry is not recommended due to the presence of numerous emission lines in the spectrum.
Please submit data on this object to the AAVSO as "VSX J070542.5-381439".
This AAVSO Special Notice was prepared by Matthew Templeton.
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