15

It probably is a dwarf planet. (It almost certainly is a dwarf planet.) The naming procedures at the IAU are that "Objects that have an absolute magnitude (H) less than +1 [...] are overseen by two naming committees, one for minor planets and one for planets. [...] All other bodies are named by the minor-planet naming committee alone." source—wikipedia ...


9

That actual IAU Resolution B5 adopted at the IAU General Assembly in 2006 states: (1) A planet is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. The ...


3

Celestia can run on MacOS. With is, you can travel in the solar system and in time. It can give you a good idea of how far things are from each other.


1

If you specificaly want to know the distance between planetary bodies, you can use the astronomical calculations tool in Stellarium. To access the tool, either press F10, or go to the left hand side toolbar pictured below From there, go to the "PC" (for "Planetary Calculations") page Here, you can select any two bodies in the Solar System (including the ...


1

You can use stellarium. It allows to stimulate view for any time. And it allows to set your observation points onto any place on many different solar system bodies. Then you can see the distance to another body. You can import your own bodies, and this get distances to those from existing bodies, and very likely even set them as observation origin. I ...


1

Heliopause is believed to be at a distance of about 123 AU away from the Sun. Now, if you look at the list of farthest body in the solar system, you will see two bodies located approximately at that distance: 2018 VG18 and predicted FarFarOut (124.12 AU and ~140 AU from the sun as of June 2020 respectively). They are considered the farthest TNOs in the solar ...


1

The IAU recognized three dwarf planets as part of its declaration of a planet definition in 2006: Ceres, Pluto and Eris. In 2008, the IAU named Makemake and Haumea under dwarf planet naming rules because of their high albedo from which they expected the bodies would prove to be dwarf planets. Other than these, no other (likely) dwarf planets fall within the ...


Only top voted, non community-wiki answers of a minimum length are eligible