plutoid การใช้

• A family has also been associated with the plutoid dwarf planet.
• The IAU's formal definition of " plutoid ", announced 11 June 2008, is:
• This conception foreshadowed the reclassification of Pluto to dwarf planet and plutoid after the discovery of Eris.
• The mass of Makemake is a rough estimate . ( See plutoid for a graph of several additional likely dwarf planets without Ceres .)
• The term " plutoid " is not widely used by astronomers, though " ice dwarf " is not uncommon.
• The last major TNO, Eris, was considered by him, his team, NASA, and many others to be the tenth planet, but the International Astronomical Union assigned it to the new dwarf planet and plutoid status.
• Therefore, the IAU announced that for naming purposes, a trans-Neptunian object will be " assumed to be a plutoid " if it has " an absolute magnitude brighter than H = + 1 magnitude ".
• The term " plutoid " was adopted by the International Astronomical Union ( IAU ) working group " Committee on Small Bodies Nomenclature ", but was rejected by the IAU working group " Planetary System Nomenclature ".
• Following the IAU General Assembly, the name " plutoid " was proposed by the members of the IAU Committee on Small Body Nomenclature ( CSBN ), accepted by the Board of Division III, and approved by the IAU Executive Committee at its meeting in Oslo, Norway, on 11 June 2008.
• Just before the conference, on June 11, 2008, the IAU announced in a press release that the term " plutoid " would henceforth be used to refer to Pluto and other objects that have an orbital semi-major axis greater than that of Neptune and enough mass to be of near-spherical shape.
• In light of the difficulty of remotely ascertaining hydrostasis, the IAU only formally confers " dwarf planet " ( and by extension, " plutoid " ) status to those bodies whose minimum estimated size is substantially greater than what is generally thought necessary to guarantee hydrostatic equilibrium ., Pluto,,, and are the only objects officially recognized as plutoids, while upwards of seventy more bodies that currently lack formal recognition are thought likely to meet the definition, and can expect formal recognition at some time in the future.
• The name and precise nature of this category were not specified but left for the IAU to establish at a later date; in the debate leading up to the resolution, the members of the category were variously referred to as " plutons " and " plutonian objects " but neither name was carried forward, perhaps due to objections from geologists that this would create confusion with their " pluton " . though " in part because of an email miscommunication, the WG-PSN [ Working Group for Planetary System Nomenclature ] was not involved in choosing the word plutoid . . . . In fact, a vote taken by the WG-PSN subsequent to the Executive Committee meeting has rejected the use of that speci
  鹀 term ", and it has not come into common use among astronomers.