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NSV 4202, a CV close to a bright companion.

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Sebastian Otero
Sebastian Otero's picture
NSV 4202, a CV close to a bright companion.

NSV 4202, a star with no type in the NSV catalogue lying in the Southern
constellation Volans is a UGSS-type dwarf nova.

ASAS-3 recorded lots of outbursts with an ampltude of only 1.1 mag (and
outburst cycle 60-80 d.):

http://www.astrouw.edu.pl/cgi-asas/asas_variable/083918-7032.6,asas3,0,0,700,250,0

From an investigation of CRTS, SPM4.0, ASAS-3 and DENIS data, the most
likely explanation is that the outbursts come from a 17th mag. object 16"
away from a 14.1 mag. brighter star.

NSV 4202 = 2MASS J08391849-7032418 = ASAS J083918-7032.6 = DENIS
J083918.5-703242 = GSC2.3 S4P5007210 = SSS_J083918.5-703241 = USNO-B1.0 0194-0205241 at 08 39 18.49 -70 32 41.9 (J2000.0, PPMXL).

VSX entry with more information:
http://www.aavso.org/vsx/index.php?view=detail.top&oid=42826

Observations confirming the identification would be worth.

Best wishes,
Sebastian

-----------------------
Sebastian Otero
VSX Team
American Association of Variable Star Observers

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484