AAVSO Special Notice #165: Dwarf nova-like outburst of the old nova X Ser

T. Kato reports in vsnet-alert 11397 that the Catalina Sky Survey has
detected a dwarf nova-like outburst in the old nova X Ser (N Ser 1903).
Catalina reports this star was at magnitude 14.18 on JD 2455059.94
(2009 August 16.44).  The AAVSO observational record for this star is 
sparse, with fewer than 20 observations in the International Database.
However, the star was reported to be at similar magnitudes in the past
(14.0, JD 2449603.6, J. Nordby, Moorhead, Minnesota; 14.1, JD 2450359.3,
M. Fonovich, Plomin, Croatia; see also Honeycutt, Robertson, and Turner,
1998, Astronomical Journal 115, 2527).

Observations of X Ser are strongly encouraged to fully cover the current
outburst.  We also encourage more long-term monitoring of X Ser to better
constrain its long-term behavior.  Both visual monitoring and instrumental
photometry are needed.


X Ser is located at the following (J2000) coordinates:

RA: 16 19 17.7 , Dec: -02 29 29


Customized charts for X Ser may be generated using AAVSO VSP:

http://www.aavso.org/observing/charts/vsp/index.html?pickname=X%20Ser


Please submit observations to the AAVSO using the name "X Ser".


This AAVSO Special Notice was prepared by M. Templeton.

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