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[vsnet-id-2mass 135] 2MASS data format

2MASS data format

   I have received the following query:

>     I have been reading with interest the mails concerning 2mass
> identifications. I will grateful if you could kindly clarify as to what
> are the three numbers given after 2mass co-ordinates for epoch 2000. I
> realise that they are most likely related to fluxes in the three bands JHK
> and I would like to the units if they are fluxes or whether they are
> directly the JHK magnitudes themselves.
> With kind regards

    The values represent J, H, K magnitudes (Jm, Hm, Km in the 2MASS
description).

Regards,
Taichi Kato

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