"object of longing" is correct and usable in written English.
You can use it to describe something that is highly desired, especially something long desired or difficult to attain. For example: "He had been the object of her longing for years and she finally got to meet him in person."
Banco Popular, the most profitable bank in Europe (measured by return on equity), has previously been the object of longing scrutiny from several big banks in Spain and abroad.
Adapted by Akihiko Shiota from a popular manga, or comic strip, the film partakes of a familiar cultural fetish: the schoolgirl in short skirt and knee socks as an object of longing and a repository of sexual power.
From the start, the teenager was a source of anxiety and an object of longing -- the vision of a terrifying, amoral future and the image of an irrecoverably innocent past -- as well as an irresistible target for marketers of entertainment.
The compromise marks the end of a quintessential New York drama, pitting the two most common objects of longing for many New Yorkers -- housing and unfettered green spaces -- against each other, and featuring some of the city's most irascible characters.
They are objects of longing, rage and need, but never selves in their own right with autonomous interior lives, fears and desires.
In Trump's lifetime, the properties held by New York's real-estate families have gone from being the objects of longing of a local aristocracy to those of a national one, and then an international one.
It's blues: long and full of longing.
Now, of course, the towers seem ever-present in a different sense, objects of grief, longing, or resolve.
When journalists are young, many are drawn to the beautiful and exceptional, the objects of millions' longing.
I love to watch Jake Bass, who takes his last name from Chuck Bass of Gossip Girl (a long-held object of my longing) kiss Asher Hawk on the mouth and tell him to say his name in the middle of a passionate scene.
I suppose I began the story out of longing.
