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Alert Notice 680 on J0139 (ZTF J013906.17+524536.89)

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weo
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Alert Notice 680 on J0139 (ZTF J013906.17+524536.89)

AAVSO Alert Notice 680 announces a campaign on the faint white dwarf J0139 (ZTF J013906.17+524536.89). Please see the notice for details and observing instructions.

Please note the short name is J0139, NOT J1039 as originally announced by me!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

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