Ceres and Vesta
All three of these asteroids will stay visible for the next few months.
Incidentally, the Dawn spacecraft is currently en-route to Ceres after visiting Vesta (see above image and caption). Dawn will rendezvous with Ceres next year. We should start getting some better images of Ceres soon!
For us observers on the ground, Ceres and Vesta will be in conjunction July 5th, only about 15′ apart, but will appear slightly dimmer than they are now, by about 1 magnitude each. Even better for astrophotographers, this will happen in the same 0.5° field of view as numerous dimmer galaxies, which should make for a nice composition!
I’m hoping to have a few consecutive nights to create some wider field composites showing the path of these two asteroids. If you’d like to do the same, let me know in the comments, or on Twitter or Facebook.
Happy Asteroid Hunting!