Zdeněk Sekanina (born 12 June 1936) is a Czech-American astronomer and scientist. In 1959, Sekanina studied astronomy at Charles University in Prague...

tail projecting toward the Sun from the head of Kohoutek [...] Dr Zdenek Sekanina concluded that the spike was not wholly due to a perspective or geometrical...

Anubis 6534 P-L Anubis, Ancient Egyptian god JPL · 1912 1913 Sekanina 1928 SF Zdenek Sekanina (born 1936), Czech-born American astronomer MPC · 1913 1914...

arcminutes long was observed visually to extend eastwards. Astronomer Zdenek Sekanina suggested that this indicates that the comet nucleus has been fragmenting...

no reports of discoveries of any such objects. In 1983, astronomer Zdeněk Sekanina published a paper criticising the comet hypothesis. He pointed out...

using the Lick Observatory and an elongated nucleus on 10 October. Zdenek Sekanina estimated the fragment separated from the main nucleus in 24 April...

furthered this idea; using observations from the Pierre Auger Observatory, Zdeněk Sekanina and Paul Chodas determined that, while the nucleus did survive perihelion...

Extrapolation of the observed positions of the two nuclei calculated by Zdenek Sekanina suggested that the nuclei broke apart on 26 October. Similar calculations...

disintegrated interstellar comet (or exocomet), as suggested by astronomer Zdenek Sekanina. Spectra from the Hale Telescope on 25 October showed red color resembling...

Marsden) 1886 Lowell (Percival Lowell) 1896 Beer (Wilhelm Beer) 1913 Sekanina (Zdeněk Sekanina) 1940 Whipple (Fred Lawrence Whipple) 1965 van de Kamp (Peter...

1978 by Zdeněk Sekanina, based on the assumption that the comet's head was on a great circle "through the sun and inner part of the tail". Sekanina was subsequently...

Mila Rechcigl (born 1930), scientist, long-term president of the SVU Zdenek Sekanina (born 1936), Czech-American astronomer Přemysl Sobotka (born 1944)...

searches for it during the later 20th century. Brian G. Marsden and Zdeněk Sekanina attempted to calculate a likely orbit for any remaining parts of the...

December 10 and noted that it had two nuclei 6.3 arcseconds apart. Zdenek Sekanina estimated that the nuclei were separated on 30 November 1947. On December...

November 1994 while fragment D was observed during the 1999 apparition. Zdenek Sekanina estimated that the first break-up of the comet took place in late 1987...

Journal. 72: 1170. Bibcode:1967AJ.....72.1170M. doi:10.1086/110396. Sekanina, Zdenek (20 October 2000). "Secondary Fragmentation of the Solar and Heliospheric...

According to a theory by NASA Jet Propulsion Laboratory scientist Zdeněk Sekanina, the latest impactor to actually make contact with the Sun was the...

from the original on 21 December 2013. Retrieved 21 December 2013. Zdenek, Sekanina & Kracht, Rainer (2014). "Disintegration of Comet C/2012 S1 (ISON)...

two nuclei were of equal brightness and separated by 3.5 arcseconds. Zdenek Sekanina calculated that the splitting occurred on Mar. 29.9 ± 1.6 UT, when...

earlier attempts, lead Marsden to conclude that the comet was lost. Zdenek Sekanina suggested that the comet underwent a change in the rotation axis of...

on ČT1, and as of May 2024[update] two seasons have been aired. Viktor Sekanina as Jakub Kadlec Marek Adamczyk as Martin Kadlec, Jakub's father Marta Dancingerová...

to the Sun) in 2034. In 1991, 101P/Chernykh was observed to split. Zdenek Sekanina, from JPL, concluded that the comet split in April 1991, when 3.3 AU...

from the original on January 11, 2017. Retrieved August 29, 2022. Zdenek Sekanina; Paul W. Chodas (December 2005). "Origin of the Marsden and Kracht...

No. 5316". Central Bureau Electronic Telegrams. 11 November 2023. Sekanina, Zdenek; Kracht, Rainer (1 May 2016). "Pairs and Groups of Genetically Related...

mission spots new comets". Universe Today. Retrieved 31 December 2016. Sekanina, Zdenek (2019). "1I/'Oumuamua and the Problem of Survival of Oort Cloud Comets...

бояться комету Еленина?. Pravda (in Russian). Retrieved 14 January 2013. Sekanina, Zdenek; Kracht, Rainer (8 May 2014). "Disintegration of Comet C/2012 S1 (ISON)...

bright Kreutz sungrazers. List of Kreutz sungrazers Lists of comets Sekanina, Zdeněk; Chodas, Paul W. (2004). "Fragmentation hierarchy of bright sungrazing...

September 1882", The Observatory, 12: 140–142, Bibcode:1889Obs....12..140P Sekanina, Zdeněk; Chodas, Paul W. (July 2007), "Fragmentation Hierarchy of Bright Sungrazing...

by Vladislav Vančura, Ivan Sekanina, Ladislav Štoll and others. The chairman of the newly found organisation became Zdeněk Nejedlý in 1932. The chosen...

390L...6M. doi:10.1111/j.1745-3933.2008.00510.x. S2CID 119299384. Sekanina, Zdeněk; Chodas, Paul W. (December 2005). "Origin of the Marsden and Kracht...