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Special Notice #93: Possible major outburst in EX Lup

January 21, 2008: The pre main-sequence eruptive variable EX Lup (AAVSO 1556-40)  appears to be in outburst. Albert Jones (Nelson, NZ) reports EX Lup at m(vis) = 9.5 on JD 2454485.1236 (2008 Jan 19, 14:58 UT). This is the second brightest outburst in this object's recorded history, behind the major outburst of m(vis) ~ 8.5, recorded around JD 2435300 (circa 1955). Observers are asked to continue monitoring this object through the current outburst. Filtered photometry of this outburst is encouraged; all observations including visual will be very useful in tracking the evolution of this current activity.
 
EX Lup is located at RA: 16:03:05.5 , Dec: -40:18:25 (J2000)
 
 
The most recent observations of EX Lup are available here: http://www.aavso.org/cgi-bin/newql.pl?name=EX%20Lup&output=html
 
Please report all observations to the AAVSO as "EX LUP".
 
This AAVSO Special Notice was prepared by Matthew Templeton.
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