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Comet SWAN (other)
Comet SWAN refers to comets discovered and named after the SWAN instrument onboard the Solar and Heliospheric Observatory The Solar and Heliospheric Observatory (SOHO) is a European Space Agency (ESA) spacecraft built by a European industrial consortium led by Matra Marconi Space (now Airbus Defence and Space) that was launched on a Lockheed Martin Atlas IIAS la ... (SOHO) spacecraft: * C/1997 K2 (SWAN) * C/2002 O6 (SWAN) * C/2004 H6 (SWAN) * C/2004 V13 (SWAN) * C/2005 P3 (SWAN) * P/2005 T4 (SWAN) * C/2006 M4 (SWAN) * C/2011 Q4 (SWAN) * C/2012 E2 (SWAN) * C/2015 C2 (SWAN) * C/2015 F3 (SWAN) * C/2015 P3 (SWAN) * C/2020 F8 (SWAN) * C/2021 D1 (SWAN) * C/2023 A2 (SWAN) * C/2025 F2 (SWAN) Other comets discovered by SWAN include: * C/2009 F6 (Yi–SWAN) * C/2015 F5 (SWAN-XingMing) * 273P/Pons-Gambart, recovered in SWAN data in November 2012 and temporarily thought to be a new discovery until orbital calculations revealed it to be a comet last seen in 1827 [Baidu] |
SWAN (instrument)
The Solar and Heliospheric Observatory (SOHO) is a European Space Agency (ESA) spacecraft built by a European industrial consortium led by Matra Marconi Space (now Airbus Defence and Space) that was launched on a Lockheed Martin Atlas II, Atlas IIAS launch vehicle on 2 December 1995, to study the Sun. It has also discovered more than 5,000 comets. It began normal operations in May 1996. It is a joint project between the European Space Agency (ESA) and NASA. SOHO was part of the International Solar Terrestrial Physics Program (ISTP). Originally planned as a two-year mission, SOHO continues to operate after 29 years in outer space, space; the mission has been extended until the end of 2025, subject to review and confirmation by ESA's Science Programme Committee. In addition to its scientific mission, it is a main source of near-real-time solar data for space weather prediction. Along with Aditya-L1, Wind (spacecraft), Wind, Advanced Composition Explorer (ACE), and Deep Space Clim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C/2006 M4 (SWAN)
C/2006 M4 (SWAN) is a non-periodic comet discovered in late June 2006 by Robert D. Matson of Irvine, California and Michael Mattiazzo of Adelaide, South Australia in publicly available images of the Solar and Heliospheric Observatory (SOHO). These images were captured by the Solar Wind ANisotropies (SWAN) Lyman-alpha all-sky camera on board the SOHO. The comet was officially announced after a ground-based confirmation by Robert McNaught (Siding Spring Survey) on July 12. Although perihelion was reached on 28 September 2006, the comet flared dramatically from an outburst, resulting in its apparent magnitude to increase from 7.0 to 4.0 on 24 October 2006, becoming visible with the naked eye. Orbit Comet C/2006 M4 is in a hyperbolic trajectory (with an osculating eccentricity larger than 1) during its passage through the inner Solar System. After leaving the influence of the planets, the eccentricity will drop below 1 and it will remain bound to the Solar System as an Oort cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C/2012 E2 (SWAN)
Comet C/2012 E2 (SWAN) was a Kreutz group sungrazing comet discovered by Vladimir Bezugly in publicly available images taken by the SWAN instrument ( Solar Wind ANisotropies) on board the SOHO spacecraft. It is recognized for being the first Kreutz sungrazer observed in SWAN imagery. Discovery On March 8, 2012, Ukrainian amateur astronomer Vladimir Bezugly reported an unknown comet in 3 images taken by the SWAN instrument on board the SOHO spacecraft. Further study of this object revealed that it was a Kreutz group sungrazer with a perihelion date on March 15, 2012. This was particularly interesting because no Kreutz sungrazer had ever been bright enough to be observed by the SWAN cameras, not even Comet C/2011 W3 (Lovejoy) which was visible to the naked-eye three months earlier. This meant that Comet SWAN had a chance of being an exceptionally bright comet. SECCHI and LASCO observations The SECCHI HI1 camera on board the STEREO-B spacecraft was the first to observe the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C/2015 F3 (SWAN)
The following is a list of comets with a very high eccentricity (generally 0.99 or higher) and a period of over 1,000 years that do not quite have a high enough velocity to escape the Solar System. Often, these comets, due to their extreme semimajor axes and eccentricity, will have small orbital interactions with planets and minor planets, most often ending up with the comets fluctuating significantly in their orbital path. These comets probably come from the Oort cloud, a cloud of comets orbiting the Sun from ~10,000 to roughly 50,000 AU. The actual orbit of these comets significantly differs from the provided coordinates. A Solar System barycentric orbit computed at an epoch when the object is located beyond all the planets is a more accurate measurement of its long-term orbit. List of near-parabolic comets See also * List of comets by type * List of Halley-type comets * List of hyperbolic comets * List of long-period comets * List of numbered comets * List of periodic co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C/2020 F8 (SWAN)
C/2020 F8 (SWAN), or Comet SWAN, is an Oort cloud comet that was discovered in images taken by the Solar Wind Anisotropies (SWAN) camera on 25 March 2020, aboard the Solar and Heliospheric Observatory (SOHO) spacecraft. In the glare of twilight, Comet SWAN is difficult to find with 50mm binoculars even though it is still near the theoretical range of naked eye visibility. The comet has dimmed since May 3. As of perihelion, the comet is very diffuse, does not have a visible nucleus and is not a comet that will be noticed by inexperienced observers. It is likely that the comet disintegrated. Observing On April 28, 2020 it had an apparent magnitude of 7 and was too diffuse to be visible to the naked eye even from a dark site. The comet was also hidden by the glare of twilight, zodiacal light and atmospheric extinction. It was originally best seen from the Southern Hemisphere. It was expected to possibly reach 3rd magnitude in May, but instead hovered closer to magnitude 6. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C/2025 F2 (SWAN)
C/2025 F2 (SWAN) is a comet that was discovered from images taken by Solar and Heliospheric Observatory, SOHO's SWAN instrument in late March 2025. The comet was expected to reach a peak magnitude of about 5 in early May 2025, however its brightening stagnated in mid April, indicating the comet possibly disintegrated before reaching perihelion. Observational history Discovery It was first spotted by astronomers Vladimir Bezugly, Michael Mattiazzo, and Rob Matson who independently reported, the former two on 29 March 2025, and the latter on 31 March 2025, that an apparent cometary object was visible in imagery by the Solar Wind Anisotropies (SWAN) camera, which images the sky in Lyman-α, on the Solar and Heliospheric Observatory (SOHO), starting from 22 March. The magnitude was reported to be about 11 and brightening. The comet on 29 March was 1.62 AU from Earth and 0.92 AU from the Sun and at a solar elongation of 28 degrees. The comet's discovery was posted in Maik Meyer' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
