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Pluto was designated by P prior to its recategorization as a dwarf planet. When the object is found around a minor planet, the identifier used is the latter's number in parentheses. Thus, Dactyl, the moon of 243 Ida, was at first designated "S/1993 (243) 1". Once confirmed and named, it became (243) Ida I Dactyl.
The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.
Examples of astronomical objects include planetary systems, star clusters, nebulae, and galaxies, while asteroids, moons, planets, and stars are astronomical bodies. A comet may be identified as both a body and an object: It is a body when referring to the frozen nucleus of ice and dust, and an object when describing the entire comet with its ...
Collectively, amateur astronomers observe a variety of celestial objects and phenomena sometimes with consumer-level equipment or equipment that they build themselves. Common targets of amateur astronomers include the Sun, the Moon, planets, stars, comets, meteor showers, and a variety of deep-sky objects such as star clusters, galaxies, and ...
Kuiper-belt objects (KBOs) Plutinos. Orcus, a dwarf planet. Vanth; Pluto, a dwarf planet. Complete list of Pluto's natural satellites. Charon; Twotinos; Cubewanos (classical objects) Haumea, a dwarf planet. Namaka; Hiʻiaka; Quaoar, a dwarf planet. Weywot; Makemake, a dwarf planet (307261) 2002 MS 4; 120347 Salacia; 20000 Varuna; Scattered-disc ...
List of NGC objects. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000) List of NGC objects (3001–4000) List of NGC objects (4001–5000) List of NGC objects (5001–6000) List of NGC objects (6001–7000) List of NGC objects (7001–7840) List of IC objects; List of Messier objects; List of ...
The pair proposed the following rules to determine whether an object in space satisfies the definition for a planetary body. [5] A planetary body is defined as any body in space that satisfies the following testable upper and lower bound criteria on its mass: If isolated from external perturbations (e.g., dynamical and thermal), the body must:
KBC Void is an immense empty region of space, named after Ryan Keenan, Amy Barger, and Lennox Cowie. Mayall's Object is the result of a galaxy collision in Ursa Major, named after Nicholas Mayall. 9Spitch is a gravitationally lensed system of two galaxies in Cetus. It is named after Zbigniew "Zbish" Chetnik.