As you may know, Stellarium is an open-source planetarium application, providing a realistic and accurate sky image in 3D, as if the users were looking through a telescope.

The latest version available is Stellarium 0.15.2, which brings the below changes:
- an algorithm for DeltaT
- orbit visualization data for asteroids
- new option for the InfoString group
- support for calculating extincted magnitudes of satellites
- new type of Solar system objects: sednoids
Installation instructions:
Up to date packages are available via some third party packages, so installing the software on Ubuntu is easy. Just add the PPA to your system, update the local repository index and install the stellarium package:
$ sudo add-apt-repository ppa:stellarium/stellarium-releases
$ sudo apt-get update
$ sudo apt-get install stellarium
Optinal, to remove stellarium, do:
$ sudo apt-get remove stellarium
The installation instructions should work on Ubuntu 16.10 Yakkety Yak, Ubuntu 16.04 Xenial Xerus, Ubuntu 14.04 Trusty Tahr, Linux Mint 17.x, Linux Mint 18, Elementary OS 0.4 Loki and Elementary OS 0.3 Freya.