What can this orchid be?

[Lilac]

Hi everyone! I'm so excited, I found this spike with little buds today when I was watering and feeding!

The problem is I bought this without a tag so I don't know what it is.

It looks kind of like a Cattleya and yet, to me I think it could be a Dendrobium also!

Is there any way to be sure without a tag id? I have no idea, and there's so much info on the net that I've looked up, but, I'm more confused now!

and how long do you think before The buds mature and open?

Thanks so much for your help guys!

Sorry, the pics are sideways!