enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. List of Solar System objects by size - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System...

    The largest of these may have a hydrostatic-equilibrium shape, but most are irregular. Most of the trans-Neptunian objects (TNOs) listed with a radius smaller than 200 km have "assumed sizes based on a generic albedo of 0.09" since they are too far away to

  3. List of smallest exoplanets - Wikipedia

    en.wikipedia.org/wiki/List_of_smallest_exoplanets

    Below is a list of the smallest exoplanets so far discovered, in terms of physical size, ... Pluto: 0.1863 Shown for comparison: Moon: 0.2725 Shown for comparison:

  4. Eris (dwarf planet) - Wikipedia

    en.wikipedia.org/wiki/Eris_(dwarf_planet)

    The mass of Eris can be calculated with much greater precision. Based on the accepted value for Dysnomia's period at the time—15.774 days [23] [68] —Eris is 27% more massive than Pluto. Using the 2011 occultation results, Eris has a density of 2.52 ± 0.07 g/cm 3, [g] substantially denser than Pluto, and thus must be composed largely of ...

  5. List of possible dwarf planets - Wikipedia

    en.wikipedia.org/wiki/List_of_possible_dwarf_planets

    Pluto–Charon, Eris, Haumea, Gonggong, Makemake, Quaoar, and Sedna are either known (Pluto) or strong candidates (the others). Orcus is again just above the threshold by size, though it is bright. There are a number of smaller bodies, estimated to be between 700 and 900 km in diameter, for most of which not enough is known to apply these criteria.

  6. Pluto - Wikipedia

    en.wikipedia.org/wiki/Pluto

    It is the largest known trans-Neptunian object by volume, by a small margin, but is less massive than Eris. Like other Kuiper belt objects, Pluto is made primarily of ice and rock and is much smaller than the inner planets. Pluto has roughly one-sixth the mass of the Moon, and one-third its volume.

  7. Dwarf planet - Wikipedia

    en.wikipedia.org/wiki/Dwarf_planet

    For almost 50 years, Pluto was thought to be larger than Mercury, [6] [7] but with the discovery in 1978 of Pluto's moon Charon, it became possible to measure Pluto's mass accurately and to determine that it was much smaller than initial estimates. [8] It was roughly one-twentieth the mass of Mercury, which made Pluto by far the smallest planet.

  8. Sedna (dwarf planet) - Wikipedia

    en.wikipedia.org/wiki/Sedna_(dwarf_planet)

    In 2004, the discoverers placed an upper limit of 1,800 km on its diameter; [57] after observations by the Spitzer Space Telescope, this was revised downward by 2007 to less than 1,600 km. [58] In 2012, measurements from the Herschel Space Observatory suggested that Sedna's diameter was 995 ± 80 km, which would make it smaller than Pluto's ...

  9. Sub-Earth - Wikipedia

    en.wikipedia.org/wiki/Sub-Earth

    The smallest known is WD 1145+017 b with a size of 0.15 Earth radii, or somewhat smaller than Pluto. However, WD 1145+017 b is not massive enough to qualify as a sub-Earth classical planet and is instead defined as a minor, or dwarf, planet. [2]