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  2. Rosetta (spacecraft) - Wikipedia

    en.wikipedia.org/wiki/Rosetta_(spacecraft)

    The comet's orbit was known before Rosetta 's launch, from ground-based measurements, to an accuracy of approximately 100 km (62 mi). Information gathered by the onboard cameras beginning at a distance of 24 million kilometres (15,000,000 mi) were processed at ESA's Operation Centre to refine the position of the comet in its orbit to a few ...

  3. Comet Hale–Bopp - Wikipedia

    en.wikipedia.org/wiki/Comet_Hale–Bopp

    However, in April 1996 the comet passed within 0.77 au of Jupiter, close enough for its orbit to be measurably affected by the planet's gravity. [37] The comet's orbit was shortened considerably to a period of roughly 2,399 years, [4] and it will next return to the inner Solar System around the year 4385. [8]

  4. 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 ...

  5. Green comet 2023 – live: How to see E3 in sky tonight before ...

    www.aol.com/green-comet-2023-live-best-082515266...

    Scientists tracking the orbit path of the green comet say it may not return to the inner Solar System again. They say the comet’s orbit shape looks like an open curve.

  6. Halley's Comet - Wikipedia

    en.wikipedia.org/wiki/Halley's_Comet

    Halley is classified as a periodic or short-period comet: one with an orbit lasting 200 years or less. [48] This contrasts it with long-period comets, whose orbits last for thousands of years. Periodic comets have an average inclination to the ecliptic of only ten degrees, and an orbital period of just 6.5 years, so Halley's orbit is atypical. [37]

  7. List of hyperbolic comets - Wikipedia

    en.wikipedia.org/wiki/List_of_hyperbolic_comets

    Astronomers have been discovering weakly hyperbolic comets that were perturbed out of the Oort Cloud since the mid-1800s. Prior to finding a well-determined orbit for comets, the JPL Small-Body Database and the Minor Planet Center list comet orbits as having an assumed eccentricity of 1.0. (This is the eccentricity of a parabolic trajectory ...

  8. Comet - Wikipedia

    en.wikipedia.org/wiki/Comet

    At the shorter orbital period extreme, Encke's Comet has an orbit that does not reach the orbit of Jupiter, and is known as an Encke-type comet. Short-period comets with orbital periods less than 20 years and low inclinations (up to 30 degrees) to the ecliptic are called traditional Jupiter-family comets (JFCs). [83] [84] Those like Halley ...

  9. Comet Encke - Wikipedia

    en.wikipedia.org/wiki/Comet_Encke

    Comet Encke / ˈ ɛ ŋ k i /, or Encke's Comet (official designation: 2P/Encke), is a periodic comet that completes an orbit of the Sun once every 3.3 years. (This is the shortest period of a reasonably bright comet; the faint main-belt comet 311P/PanSTARRS has a period of 3.2 years.)