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Topic: 420 Bertholda

	RASNZ Occultation Section - Bertholda Occultation Update
		OCCULTATION BY (420) BERTHOLDA - 2004 OCT 30
		On 2004 Oct 30 UT, the 141 km diameter asteroid (420) Bertholda will occult a 12.3 mag star in the constellation Pisces for observers along a path across SE Australia.
		In the case of an occultation, the combined light of the asteroid and the star will drop by 1.3 mag to 13.2 mag (the magnitude of the asteroid) for at most 11.2 seconds.
	occsec.wellington.net.nz /planet/2004/updates/041030_420_1965_u.htm (641 words)

	420 Bertholda - Encyclopedia, History, Geography and Biography
		420 Bertholda - Encyclopedia, History, Geography and Biography
		420 Bertholda is a very large Main belt asteroid.
		This encyclopedia, history, geography and biography article about 420 Bertholda contains research on
	www.arikah.net /encyclopedia/420_Bertholda (97 words)

	Varsavia Occultation July 18 timed in w. North America (Site not responding. Last check: 2007-10-29)
		At the time, it was the 3rd best-observed (in numbers of positive observations) asteroidal occultation, after the 1983 May Pallas - 1 Vulpeculae event and the 2002 Sept. Tercidina - 43 Tauri event, but now it is in 4th place since 2nd place is now taken by the highly successful occultation of 8.7-mag.
		SAO 144929 by (420) Bertholda from Poland to Portugal on August 26.
		Varsavia's path shifted about a quarter path-width west of Steve Preston's last prediction and not quite half a path-width west of his July 6th prediction that I used as the basis for the station track calculations.
	iota.jhuapl.edu /m1263731.htm (952 words)

	Recent Asteroidal Occ'n Observations - updated 2004 January 19 (Site not responding. Last check: 2007-10-29)
		The path shifted south and cloudy skies (and, for some, heavy snow) thrawted others, so this will not be nearly as well-observed as the August 26th Bertholda event, but I think it is still the 4th- best-observed event of 2003.
		Miss observations from Bruges, Belgium and Swainsboro, Georgia constrain Botha's shape both north and south of the Ieper chord, as shown here, showing that the actual path passed about halfway between the predictions of Jan Manek and Steve Preston.
		SAO 144929 by the 146-km P-class asteroid 420 Bertholda was recorded by observers at over 70 separate stations in Poland, Czech Republic, Germany, Switzerland, France, and Portugal to make it the 2nd most successfully-observed asteroidal occultation to date, replacing last September's Tercidina event from that position.
	iota.jhuapl.edu /astob119.htm (3937 words)

	Update for (420) Bertholda - August 26/27, 2003
		IOTA/IOTA-ES occultation update for (420) Bertholda / TYC 5757-00353-1 = SAO 144929 on August 26/27, 2003 visible from N Russia, SE Estonia, Latvia, Lithuania, NW Poland, NW Czechia, Germany, NW Switzerland, France, NW Spain and N Portugal Summary
		In the night of August 26/27, 2003 a bright 8.6 mag star TYC 5757-00353-1 = SAO 144929 will be occulted by a 146 km asteroid (420) Bertholda.
		Data for the minor planet: * general information: number, name: (420) Bertholda approx.
	www.asu.cas.cz /~peter/news/ao/bertholda/update/0826ber.html (1017 words)

	► » It winked! (Site not responding. Last check: 2007-10-29)
		invisible 13m6 Minor Planet (420 Bertholda) on a collision course
		not seen, so Bertholda would be just off limits - anyway, it was
		I chose the 6,7mm UWA for 150x for the final approach, and kept the
	www.science-one.org /detail-5477675.html (329 words)

	Recent Asteroidal Occ'n Observations - updated 2003 Sept. 11 (Site not responding. Last check: 2007-10-29)
		Recent Asteroidal Occ'n Observations - updated 2003 Sept. 11
		Good 420 Bertholda occultation observed in Europe - updated 2003 Sept. 11
		SAO 144929 by the 146-km P-class asteroid 420 Bertholda was recorded by observers at over 50 separate stations in Poland, Czech Republic, Germany, Switzerland, France, and Portugal to make it the 3rd most successfully-observed asteroidal occultation to date, replacing the July 18th Varsavia event in that position.
	iota.jhuapl.edu /astob930.htm (2935 words)

	The Cosmic Mirror # 260
		Keck AO Images of Asteroid (511) Davida don't show too much - but then again Davida's angular diameter was less than one-ten-thousandth of a degree: Keck Release [SR].
		A successful asteroid occultation campaign in Europe "maps" (420) Bertholda: EurAster ("chords" delivers the outline of the asteroid), Knöfel.
		The hellish climate of Venus may have arisen far more recently than previously supposed, suggests new research - pleasant Earth-like conditions probably persisted for two billion years after the planet's birth: New Sci.
	www.astro.unibonn.de /~dfischer/mirror/260.html (2597 words)

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