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Topic: 532 Herculina

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	[No title] (Site not responding. Last check: 2007-11-06)
		3) 532 Herculina occults GSC 6266 2247 (V=10.2) at 05:52 UT, medium max.
		Events involving 532 Herculina are particularly interesting since this object may have a companion satellite, since a secondary occultation has been reported in the past.
		532 Herculina is a relatively large asteroid and being at a low altitude (12deg) casts a shadow some 1100km in width, potentially extending the full length of the UK.
	www.theastronomer.org /tacirc/1997/e1170.txt (393 words)

	[AANC Contacts] Asteroid HERCULINA Occultation Wednesday morning
		For advanced amateurs, especially those with video equipment, the asteroid (532) Herculina occults a 11.6 magnitude star in Gemini on the morning of Wednesday, Sept 15th at 4:18am.
		Detailed charts and track maps can be seen at: http://asteroidoccultation.com/2004_09/0915_532_1912.htm Herculina was my first attempt at asteroid occultations back on July 7th, 1978 at Foothill College Observatory.
		I had a miss, but during that occultation, a possible moon of Herculina was indicated by one observer and there's a possibility that this occultation will confirm that for observers even FAR from the path.
	www.whiteoaks.com /pipermail/contacts/2004-September/000441.html (385 words)

	2 The asteroid masses and densities (Site not responding. Last check: 2007-11-06)
		Herculina is also the best test asteroid because it gives Davida's mass that is almost insensitive to errors in masses in the standard dynamical model and inclusion the only additional perturbing asteroid, (444) Gyptis, to the dynamical model (see Table 4).
		Moreover, Herculina was observed for a long enough time before and after the closest encounter with Davida in 1963 (Fig.
		The result obtained from (89) Julia, as opposed to Herculina, is strongly depedent on asteroid masses included in the dynamical model (Table 4).
	aanda.u-strasbg.fr:2002 /papers/aa/full/2001/29/aa10228/node2.html (4009 words)

	RASNZ Occultation Section - Herculina Occultation Update
		OCCULTATION BY (532) HERCULINA - 2006 OCT 11
		On 2006 Oct 11 UT, the 222 km diameter asteroid (532) Herculina will occult a 10.0 mag star in the constellation Sagittarius for observers along a path running across the northern end of the north island of New Zealand during evening twilight.
		In the case of an occultation, the combined light of the asteroid and the star will drop by 1.6 mag to 11.3 mag (the magnitude of the asteroid) for at most 8.4 seconds.
	occsec.wellington.net.nz /planet/2006/updates/061011_532_5579_u.htm (674 words)

	Sunday:
		One of our projects over these two weeks will be to observe the asteroid 532 Herculina and project the radius of its orbit.
		Upon this discovery we began the laborious process of "star-hopping" from a well-known star, serpens omicron, to the asteroid.
		Ser omicron was close to the asteroid and from there we centered the telescopes on nearby stars, steadily getting closer to the asteroid, until we were able to center on 532 Herculina and record it's coordinates and the time at which we sited it.
	laastro.lanl.gov /earthwatch/06/garrett/sam_garrett.html (2586 words)

	Paul Maley Occultation Page (Site not responding. Last check: 2007-11-06)
		Even though the observations of the 6.2 magnitude star SAO 120774 by 9.3 magnitude (532) Herculina were made with the star at low elevation above the horizon, Edward Bowell, using a photoelectric photometer from a different location, recorded a 5.3 second occultation at literally the same time that McMahon saw a 4.0 second outage.
		These observations were consistent with a satellite about 50km in diameter situated 990km from Herculina.
		However, it was not until 1994 when the Galileo spacecraft flew past the asteroid Ida, that an image revealed the first real satellite of an asteroid.
	www.eclipsetours.com /occultationd (681 words)

	Astron. Astrophys. 332, 1087-1098 (1998) (Site not responding. Last check: 2007-11-06)
		The three shape models were in fair agreement with the model derived from Galileo images (Thomas et al.
		Michalowski (1996) provided a new, ellipsoidal model of the asteroid (532) Herculina.
		It was based on the hypothesis that, due to volume inhomogeneities, the axis of rotation did not coincide with the shortest axis of the ellipsoid.
	aa.springer.de /papers/8332003/2301087/sc1.htm (1150 words)

	RASNZ Occultation Section - Herculina Occultation Update
		OCCULTATION BY (532) HERCULINA - 2006 OCT 13
		On 2006 Oct 13 UT, the 222 km diameter asteroid (532) Herculina will occult a 12.0 mag star in the constellation Sagittarius for observers along a path across South Australia, passing directly over Adelaide, across far north-western Victoria and over central New South Wales leaving near Coffs Harbour.
		In the case of an occultation, the combined light of the asteroid and the star will drop by only 0.5 mag to 11.3 mag (the magnitude of the asteroid) for at most 8.2 seconds.
	occsec.wellington.net.nz /planet/2006/updates/061013_532_5591_u.htm (689 words)

	Model SEDs of asteroids used in the calibration of PHT-P and PHT-C
		The changing earth-asteroid distance can cause an absolute flux in-/decrease of one order of magnitude on a yearly timescale, as is exemplified by the indicated flux range of Ceres.
		From a comparison of the theoretical models used in the calibration of ISOPHOT with validated observations of the same targets with other ground-based and space facilities, we estimate that the accuracy of the models produced for our primary standards Ceres, Pallas, Vesta and Herculina is about 10%.
		For the rest of asteroids, the accuracy is only slightly worse but in all cases, except Dione and Cybele, better than 15%.
	www.iso.vilspa.esa.es /users/expl_lib/ISO/wwwcal/pht.html/model_phtasteroids.html (220 words)

	Astron. Astrophys. 360, 363-374 (2000) (Site not responding. Last check: 2007-11-06)
		The maximum perturbation on Vesta caused by Ceres amounts to only 6" (see Table 3) and it is possible that some systematic errors in Vesta's observations and/or unmodeled perturbations can influence the derived mass of Ceres.
		We found that asteroids: (29) Amphitrite, (15) Eunomia and (532) Herculina can be responsible for some of the unmodeled perturbations on Vesta.
		These are: (16) Psyche, (121) Hermione, (423) Diotima, (76) Freia and (532) Herculina.
	aa.springer.de /papers/0360001/2300363/sc3.htm (1855 words)

	Minor planet 532 Herculina (movement over 24 hours) (AstroImage Database)
		Minor planet 532 Herculina (movement over 24 hours) (AstroImage Database)
		Animated sequence of photo images showing movement of minor planet 532 Herculina through a starfield in Orion over a 24 hour period.
		Movement of minor planet 532 Herculina against backdrop of stars over a 24 hour period
	www.richweb.f9.co.uk /astro/imagelib/Herculina-animation-200001.htm (115 words)

	Flora (8) and Herculina (532) - IceInSpace Forums
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		Around the 14th of January both asteroids Flora (8) and Herculina (532) reached opposition.
		After a bit of trial and error and a lot of juggling of focal lengths and image size adjusted in PS I've manage to put the few images together.
	www.iceinspace.com.au /forum/showthread.php?t=541 (1335 words)

	(45) Eugenia and Petit-Prince
		Infrared lightcurves of asteroids 532 Herculina and 45 Eugenia - Proof of the absence of significant albedo markings
		Lebofsky, L. A., Tedesco, E. F., and Veeder, G. 1987, Bulletin of the American Astronomical Society Infrared Lightcurves of 532 Herculina and 45 Eugenia
		Photoelectric lightcurves of asteroids 42 Isis, 45 Eugenia, 56 Melete, 103 Hera, 532 Herculina, and 558 Carmen
	pages.prodigy.net /wrjohnston/astro/astmoons/am-00045.html (1050 words)

	Abstracts - Fall 2001 Meeting of ISAAPT
		Students taking a physics course in astronomical topics undertook to demonstrate the efficacy of Gauss’s Method for orbit determination.
		They imaged asteroid 532 (Herculina) with Principia’s 16” reflecting telescope and CCD camera on three nights spanning 19 days.
		Entering apparent positions gleaned from these images and corresponding solar positions into a BASIC software program employing Gauss’s algorithm, they approached the best orbital fit by successive approximation.
	helios.augustana.edu /isaapt/f01/papers/abstracts.html (2723 words)

	January astronomy calendar
		20 11 54.54 -32 55.9 1.516 1.199 52 7.5 53.2 209.3 5:11 (325, 12) Nov.
		Asteroid 532 Herculina (magnitude 8.9) passes 1 degree south of the first magnitude star Pollux around January 31.
		This is an open cluster and is a wonderful object for binoculars or a small telescope.
	www.geocities.com /goarana666/jan05.html (3073 words)

	York Weekly Local News: Bright, enigmatic meteor shower on Dec. 14
		It probably has rivers and lakes of liquid ethane with dissolved methane that is continually converted to several compounds, including hydrogen cyanide, which is a building block of amino acids.
		Through a telescope, you should be able to spot two medium-size asteroids, about 70 miles across, 8 Flora and 532 Herculina, just to the left of Saturn with nearly the same apparent size and brightness of Titan.
		By the end of this month, Saturn will rise by 6 p.m.
	www.seacoastonline.com /2004news/yorkweekly/12012004/news/51664.htm (1262 words)

	Minor planet 532 Herculina (2001-01-03) (AstroImage Database)
		Annotated photo image showing minor planet 532 Herculina (cyan cross-hairs)
		2000-Jan-03 photo with 532 Herculina and simulated positions (46 KB) 2000-Jan-03 photo with positions of 532 Herculina calculated using TheSky program (Software Bisque) for 1999-Dec-31, 21:50 UT to 2000-Jan-06, 21:50, at 2 day intervals
		Paragon 75-300mm Tele Zoom, operating at 300mm, f/8
	www.richweb.f9.co.uk /astro/imagelib/Herculina-20000103-F-007.htm (65 words)

	Amazon.com: "albedo markings": Key Phrase page (Site not responding. Last check: 2007-11-06)
		See all pages with references to albedo markings.
		E.F. and Veeder, G.J. (1988) Infrared lightcurves of asteroids 532 Herculina and 45 Eugenia: proof of the absence of significant albedo markings.
		Key Phrases in this book: New York, University of Arizona Press, Lunar Planet, Earth Planet, Space Sci, Pioneer Venus, core adiabat, paired ejecta, shallow moonquakes, basaltic eucrites, downflow sheets, lamina cycles (See more)
	www.amazon.com /phrase/albedo-markings (514 words)

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