What is the significance of the aubade form?

[Rougir]

In 'The Sunne Rising' or 'The Good Morrow' what is the significance of Donne using the aubade form? Is it merely to illustrate the sun's intrusion on the lovers or could it be a subtle allusion to the Ptolemaic idea of man being centre of the universe?

I am interested to hear any responses, thank you.