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  2. Lists of comets - Wikipedia

    en.wikipedia.org/wiki/Lists_of_comets

    Periodic comets usually have elongated elliptical orbits, and usually return to the vicinity of the Sun after a number of decades. The official names of non-periodic comets begin with a "C"; the names of periodic comets begin with "P" or a number followed by "P". Comets that have been lost or disappeared have names with a "D". Comets whose ...

  3. List of comets by type - Wikipedia

    en.wikipedia.org/wiki/List_of_comets_by_type

    This is a list of comets (bodies that travel in elliptical, parabolic, and sometimes hyperbolic orbits and display a tail behind them) listed by type. Comets are sorted into four categories: periodic comets (e.g. Halley's Comet), non-periodic comets (e.g. Comet Hale–Bopp), comets with no meaningful orbit (the Great Comet of 1106), and lost comets (), displayed as either P (periodic), C (non ...

  4. Lists of astronomical objects - Wikipedia

    en.wikipedia.org/wiki/Lists_of_astronomical_objects

    Lists of comets; List of meteor showers; Minor planets. List of minor planets. List of exceptional asteroids; List of minor planet moons; List of damocloids; List of centaurs (small Solar System bodies) List of trans-Neptunian objects; List of unnumbered minor planets; List of dwarf planets; List of possible dwarf planets

  5. List of periodic comets - Wikipedia

    en.wikipedia.org/wiki/List_of_periodic_comets

    Periodic comets (also known as short-period comets) are comets with orbital periods of less than 200 years or that have been observed during more than a single perihelion passage [1] (e.g. 153P/Ikeya–Zhang). "Periodic comet" is also sometimes used to mean any comet with a periodic orbit, even if greater than 200 years.

  6. List of numbered comets - Wikipedia

    en.wikipedia.org/wiki/List_of_numbered_comets

    This is a list of periodic comets that were numbered by the Minor Planet Center after having been observed on at least two occasions. Their orbital periods vary from 3.2 to 366 years. As of October 2023 [update] there are 471 numbered comets (1P–471P). [ 1 ]

  7. List of astronomical catalogues - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    SC — Slough catalogue ("Observations of Nebulae and Clusters of Stars, made at Slough, with a Twenty-Feet Reflector, between the years 1825 and 1833" by John Herschel; 2306 entries) Schb — John Martin Schaeberle (double stars) Schj — Hans Schjellerup (double stars) Schoenberg — (for example: Schoenberg 205-6 at 6:37.1 / +10°21')

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  9. List of O-type stars - Wikipedia

    en.wikipedia.org/wiki/List_of_O-type_stars

    Download as PDF; Printable version; In other projects ... This is a list of O-type stars by their distance from Earth. [1] [2] [3 ] List. Milky Way galaxy. This ...