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Special Notice #211: Outburst of EX Hya

May 22, 2010: Rod Stubbings has reported that the infrequently outbursting dwarf nova EX Hydrae is in outburst. Stubbings reported the star at a visual magnitude of 9.4 on 2010 May 22.667 (JD 2455339.167) and it remained at 9.4 through May 22.721 (2455339.221). Both visual and instrumental observations of EX Hya are urgently requested. CCD observers, please obtain time-series photometry if at all possible. Please follow this outburst through its completion; EX Hya is known to have short outbursts, so this outburst may be very brief.
EX Hya is located at the following (J2000) coordinates:
RA: 12 52 24.22 , Dec: -29 14 56.0
Charts for EX Hya may be plotted using AAVSO VSP (
Please promptly submit all observations to the AAVSO with the name "EX HYA".
This Special Notice was prepared by Matthew Templeton.
SUBMIT OBSERVATIONS TO THE AAVSO Information on submitting observations to the AAVSO may be found at:
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