@22 Messier Tidy Upper – mostly agree, but Ouranos (Uranus) was discovered by Herschel in 1781, 20 years before 1 Ceres .. and then i agree with your ordering.

Good point – thanks for that.

I also missed K0 o too. Oops. Guess that’d have to be Orcus or Varuna or Ixion or another of the ice dwarfs.

@SkyGazer… It depends on how far away you are from the black hole.
I’d have to say that a given black hole’s ‘suckiness’ is inversely proportional to the distance of the observer… but I could be wrong, methinks.

I suggest NGC 127001.

The interesting thing about that image for me is that when I look at the central disk, it seems to be an edge-on photo of a smaller galaxy. Then I look at the spiral arms and my mind thinks there ought to be another galactic core hidden behind there somewhere. Just an illusion, obviously.

BTW, Jess Tauber: I wrote the above before I saw your #3. Good one!

Uranus – K0 h
Ceres – K0 i
Pallas K0 j
Vesta Ko k

and then i agree with your ordering.

So I suppose we’d call Earth KOI-0 (zero) c or maybe Kepler Zero g assuming we count the earlier classical planets (Mercury, Venus, Mars, Jupiter, Saturn) as being discovered first.

Correction – Earth would be Kepler Zero g – because i dn’t know my a., c’s well enough – d’oh!

Kepler exoplanets listing~wise I think we’d have our solar system “named” (if you can call it that) as follows :

Sun – KOI – 0

Mercury – Kepler Zero b
Venus – Kepler Zero c
Mars – K0 d
Jupiter – Ko e
Saturn – K0 f

The first “planetes” (not a typo) known originally as wandering stars.

Earth – K0 g

Once we knew we were one of them! Then we went on to find :

Ceres – Ko h
Pallas – Ko i
Vesta – Ko j

Plus Juno but it and the other asteroids are insufficently round to qualify for planetary status – as may be Pallas and Vesta too.

Ouranos – K0 k
Neptune- k0 l
Pluto – K0 m
Haumea – K0 n
Sedna – K0 p
Makemake – Ko q
Eris – Ko r

and so on.

Quite what they’re going to do when the number of planets confirmed around a star exceeds 26 I don’t know!