EX Lup | aavso

Special Notice #93: Possible major outburst in EX Lup

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January 21, 2008: The pre main-sequence eruptive variable EX Lup (AAVSO 1556-40) appea

Alert Notice 172: 1908+01 Nova Aquilae 1993 [V1419 Aql] AND Brightening of 1556-40 EX Lupi AND Revision of request to monitor 2138+43 SS Cygni and 1014+20 AD Leo AND 1719-23 Nova Ophiuchi 1993 [V2295 Oph] AND 0947+69 SN 1993J in NGC 3031

May 18, 1993

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
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Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 172 (April 22, 1993)

1908+01 NOVA AQUILAE 1993 [V1419 AQL]

Alert Notice 368: Major Outburst of EX Lup

January 29, 2008: Further to AAVSO Special Notice #93, the pre main-sequence eruptive variable EX Lup (AAVSO 1556-40) appears to be undergoing a major outburst, exceeding the previous brightest maximum recorded in 1955. Albert Jones (Nelson, NZ) reports that EX Lup reached a visual magnitude of 7.9 on 2008 Jan 29.66 UT (JD 2454495.1600). This exceeds the previous brigtest recorded magnitude of this object (m(vis) = 8.7 on JD 2435385.9 and 2435459.1) in 1955-56.