Periodic comets
Encke-type Comets
- 427P/ATLAS
Comet ATLAS may refer to any comets below discovered by the Asteroid Terrestrial-impact Last Alert System survey:
"Comet ATLAS" may also be an incomplete reference to a comet co-discovered by the Asteroid Terrestrial-impact Last Alert System survey. These include:
David Howard Levy is a Canadian amateur astronomer, science writer and discoverer of comets and minor planets, who co-discovered Comet Shoemaker–Levy 9 in 1993, which collided with the planet Jupiter in 1994.
Luboš Kohoutek was a Czech astronomer and a discoverer of minor planets and comets, including Comet Kohoutek which was visible to the naked eye in 1973. He also discovered a large number of planetary nebulae.
Robert H. McNaught is a Scottish-Australian astronomer at the Research School of Astronomy and Astrophysics of the Australian National University (ANU). He has collaborated with David J. Asher of the Armagh Observatory.
Embedded zerotrees of wavelet transforms (EZW) is a lossy image compression algorithm. At low bit rates, i.e. high compression ratios, most of the coefficients produced by a subband transform will be zero, or very close to zero. This occurs because "real world" images tend to contain mostly low frequency information. However where high frequency information does occur this is particularly important in terms of human perception of the image quality, and thus must be represented accurately in any high quality coding scheme.
The Directorate-General for Trade is a Directorate-General of the European Commission. The European Commission's Directorate- General for Trade develops and implements the EU's trade policy in order to help secure prosperity, solidarity and security in Europe and around the globe. It covers a wide area from manufactured goods to services, intellectual property and investment.
Comet McNaught can refer to any one of more than 50 comets discovered by the astronomer Robert H. McNaught.
Line 10 is the name of one of the two branches of the Barcelona metro line 9, currently (2020) under construction and to be operated by TMB. Like Line 9 and Line 11, it will be an automatic train operation metro line.
Willie Brayshaw Yeadon, was a British railway historian known for his magnum opus, Yeadon's Register of LNER Locomotives and other works.
An antitail is an apparent spike projecting from a comet's coma which seems to go towards the Sun, and thus geometrically opposite to the other tails: the ion tail and the dust tail. Despite a common misunderstanding, this phenomenon is not an optical illusion. The antitail consists of larger dust particles left behind by the comet. These dust particles are less affected by the Sun's radiation pressure and tend to remain roughly in the comet's orbital plane and eventually form a disc along the comet's orbit due to the ejection speed of the particles from the comet's surface. As Earth passes through the comet's orbital plane, this disc is seen side on, and appears as the characteristic spike. The other side of the disc can sometimes be seen, though it tends to be lost in the dust tail. The antitail is therefore normally visible for a brief interval only when Earth passes through the comet's orbital plane.
C/1980 E1 is a non-periodic comet discovered by Edward L. G. Bowell on 11 February 1980 and which came closest to the Sun (perihelion) in March 1982. It is leaving the Solar System on a hyperbolic trajectory due to a close approach to Jupiter. In the 43 years since its discovery only two objects with higher eccentricities have been identified, 1I/ʻOumuamua (1.2) and 2I/Borisov (3.35).
The Edgar Wilson Award is an annual international award established in 1998 consisting of a monetary award and a plaque allocated annually to amateur comet discoverers. It is administered by the Smithsonian Astrophysical Observatory (SAO) through the IAU's Central Bureau for Astronomical Telegrams (CBAT).
The Csányi family or Csány was a noble family in the Kingdom of Hungary, which first appeared in the early 14th century and had estates and villages mostly in Zala County.
Cosmic Vision is the third campaign of space science and space exploration missions in the Science Programme of the European Space Agency (ESA). Formulated in 2005 as Cosmic Vision: Space Science for Europe 2015–2025, the campaign succeeded the Horizon 2000 Plus campaign and envisioned a number of missions in the fields of astronomy and solar system exploration beyond 2015. Ten missions across four funding categories are planned to be launched under Cosmic Vision, with the first being CHEOPS in December 2019. A mission to the Galilean moons (JUICE), the first deep space mission with an opportunistic target, and one of the first gravitational-wave space observatories (LISA), are planned for launch as part of the Cosmic Vision campaign.
Eric James Christensen is an American astronomer and a discoverer of comets. Since 2023, he works as an Observing Specialist Manager at the Vera C. Rubin Observatory. Before this, he was a staff scientist with the Catalina Sky Survey (CSS), where he was responsible for the survey's near-Earth object operation.
C/2019 Y1 (ATLAS) is a comet with a near-parabolic orbit discovered by the ATLAS survey on 16 December 2019. It passed perihelion on 15 March 2020 at 0.84 AU from the Sun. Its orbit is very similar to C/1988 A1 (Liller), C/1996 Q1 (Tabur), C/2015 F3 (SWAN) and C/2023 V5 (Leonard), suggesting they may be fragments of a larger ancient comet.
The name comet Bradfield may refer to one of these comets:
Comet Lemmon may refer to any comets below discovered by the Mount Lemmon Survey:
Comet NEAT may refer to any comets below discovered by the Near-Earth Asteroid Tracking survey: