HARMONY by Project Itoh is in first person.
Yes! Yes it is. And it also has an intimacy of tone, I feel.
Ah, you read it already! I'd forgotten! Well, we're doing another one of his for this summer, so keep your eye out.
Yeah. I read a ton of YA so it's very jarring for me not to have that almost-too-close intimacy when I read SF for adults.
I think both genres could benefit from some variation and shaking things up.
You're making yourself quite clear; I'm just not thinking of any SF that meets your criteria, right at the moment.
It's all been shunted over to urban fantasy and paranormal romance.
Charlie Stross seems to like intimate POVs- the Laundry books and Saturn's Children are in first person with one narrator per book, and Halting State is in... tight second, I guess?
I think Ken Macleod does intimate third fairly frequently, but I haven't read his most recent ones.
Also Glasshouse, although the first person does go through a few physical changes so may count as more than one...
I am very fond of the Laundry books, but I don't really consider Cthulhu to be SF.
Bits of RULE 34 are in an intimate second-person.
Far be it from me to point out that my Rotten Row is first-person SF, but I'm sure somebody will do it on my behalf...?
We have no objections to, "Well, in MY book..." here.
In moderation, of course.
I have been recently enjoying Julie Czerneda's Survival and Migration (first two of a trilogy; I haven't tracked down the third yet). In addition to being single-POV intimate third person, they have aliens and planets in, which is a type of science fiction I've been missing myself.
Elizabeth Bear's Jacob's Ladder trilogy is written in intimate third with a pretty small number of POV characters, as I recall. I think that's true of the Jenny Casey books as well...
I just finished "Galileo's Dream" by Kim Stanley Robinson, and I think this would meet that criterion; it's mostly third-person-intimate, I thought.
CJ Cherryh's books do intimate-third, if I'm understanding what you're looking for correctly. She does a lot with third-person stories where you only know what the point-of-view character knows: he hears shots over the ridge, but can only speculate on who's shooting whom, for example.
I just finished the latest in her Foreigner series, which has two POV characters (the last few books have had two; the first part of the series had one), so you get to see a bit more than the one protagonist knows, but it's still very tightly focused.
But that series hasn't got much in the way of space ships, though it is aliens all the way down.