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Schwassmann–Wachmann
There are several comets named Schwassmann–Wachmann, the discovery of which is co-credited to German astronomers Arnold Schwassmann and Arno Arthur Wachmann: * 29P/Schwassmann–Wachmann (29P/1927 V1, Schwassmann–Wachmann 1) * 31P/Schwassmann–Wachmann 31P/Schwassmann–Wachmann, also known as Schwassmann–Wachmann 2, is a periodic comet in the Solar System. It was discovered on January 17, 1929, at an apparent magnitude of 11.Cometography Home Page The comet has been seen at every apparition ... (31P/1929 B1, Schwassmann–Wachmann 2) * 73P/Schwassmann–Wachmann (73P/1930 J1, Schwassmann–Wachmann 3) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
29P/Schwassmann–Wachmann
Comet 29P/Schwassmann–Wachmann, also known as Schwassmann–Wachmann 1, was discovered on November 15, 1927, by Arnold Schwassmann and Arno Arthur Wachmann at the Hamburg Observatory in Bergedorf, Germany. It was discovered photographically, when the comet was in outburst and the magnitude was about 13. Precovery images of the comet from March 4, 1902, were found in 1931 and showed the comet at 12th magnitude. The comet is unusual in that while normally hovering at around 16th magnitude, it suddenly undergoes an outburst. This causes the comet to brighten by 1 to 5 magnitudes. This happens with a frequency of 7.3 outbursts per year, fading within a week or two. The magnitude of the comet has been known to vary from 18th magnitude to 10th magnitude, a more than thousand-fold increase in brightness, during its brightest outbursts. On 14 January 2021, an outburst was observed with brightness from 16.6 to 15.0 magnitude, and consistent with the 7.3 outbursts per year noted earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
31P/Schwassmann–Wachmann
31P/Schwassmann–Wachmann, also known as Schwassmann–Wachmann 2, is a periodic comet in the Solar System. It was discovered on January 17, 1929, at an apparent magnitude of 11.Cometography Home Page The comet has been seen at every apparition. The comet nucleus is estimated to be 6.2 kilometers in diameter. In 1929, the astronomer Anne Sewell Young Anne Sewell Young (January 2, 1871 – August 15, 1961) was an American astronomer. She was an astronomy professor at Mount Holyoke College for 37 years. Biography Anne Sewell Young was born in Bloomington, Wisconsin on January 2, 1871, to Rever ... identified the comet with an object that had been misidentified as the minor planet "Adelaide" ( A904 EB). References External links Orbital simulationfrom JPL (Java) Horizons Ephemeris– Seiichi Yoshida @ aerith.net Periodic comets 0031 * 19290117 {{comet-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently bright, a comet may be seen from Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religions. Comets usually have highly eccentric elliptical orbits, and they have a wide range of orbital periods, ranging from several years to potentially several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Schwassmann
Friedrich Karl Arnold Schwassmann (25 March 1870 – 19 January 1964) was a German astronomer and a discoverer of 22 minor planets and 4 comets, who worked at AOP in Potsdam and at Bergedorf Observatory in Hamburg. He was co-discoverer with Arno Arthur Wachmann of the periodic comets 29P/Schwassmann–Wachmann, 31P/Schwassmann–Wachmann and 73P/Schwassmann–Wachmann, and with Arno Arthur Wachmann and Leslie Peltier Leslie Copus Peltier (January 2, 1900 – May 10, 1980) was an American amateur astronomer and discoverer of several comets and novae, including Nova Herculis 1963. He was once described as "the world's greatest non-professional astronomer" by ... of the non-periodic comet C/1930 D1 (Peltier–Schwassmann–Wachmann). The main-belt asteroid 989 Schwassmannia, discovered by himself in 1922, was later named in his honor (). List of discovered minor planets See also * References 1870 births 1964 deaths Discoverers of asteroids Discov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arno Arthur Wachmann
Arno Arthur Wachmann (8 March 1902 – 24 July 1990) was a German astronomer and discoverer of comets and minor planets, who worked for many years at the Bergedorf Observatory in Hamburg. Springer Link, Sept. 2007, p. 1188. With he co-discovered the |
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