Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations

Ellen S. Howell; C. Magri; M. C. Nolan; P. A. Taylor; R. J., Jr. Vervack; Y. R. Fernandez; M. Mueller; L. A. M. Benner; J. D. Giorgini; D. J. Scheeres; M. D. Hicks; H. Rhoades; J. M. Somers; N. M. Gaftonyuk; Y. N. Krugly; V. V. Kouprianov; I. E. Molotov; V. Benishek; V. Protitch-Benishek; A. Galad; D. Higgins; P. Kusnirak; D. Pray

Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations

Ellen S. Howell, C. Magri, M. C. Nolan, P. A. Taylor, R. J., Jr. Vervack, Y. R. Fernandez, M. Mueller, L. A. M. Benner, J. D. Giorgini, D. J. Scheeres, M. D. Hicks, H. Rhoades, J. M. Somers, N. M. Gaftonyuk, Y. N. Krugly, V. V. Kouprianov, I. E. Molotov, V. Benishek, V. Protitch-Benishek, A. GaladD. Higgins, P. Kusnirak, D. Pray

Astronomy

Research output: Contribution to journal › Meeting Abstract › Academic

Abstract

We observed near-Earth asteroid (8567) 1996 HW1 at the Arecibo Observatory on six dates in September 2008, obtaining radar images and spectra. By combining these data with an extensive set of new lightcurves taken during 2008-2009 and with previously published lightcurves from 2005, we were able to reconstruct the object's shape and spin state. 1996 HW1 is an elongated, highly bifurcated object, and appears to be a contact binary. A convex shape model derived from the lightcurves alone produces a pole orientation that is consistent with the pole derived from the radar data. It is instructive to compare these two shape models. We have also obtained near-infrared spectra at the NASA IRTF using SpeX in both prism and LXD modes. The prism spectra show pyroxene and olivine bands. We obtained LXD spectra (2-4 microns) on 19 August, 1 September and 1 October 2008. Thermal modeling using the shape model and derived pole and rotation constrain the regolith properties. The radar shape model and results of the thermal modeling will be presented.

Original language	English
Pages (from-to)	1080
Journal	Bulletin of the American Astronomical Society
Volume	42
Publication status	Published - 1-Oct-2010
Event	42nd Meeting, American Astronomical Society, 2010 - Pasadena, United States Duration: 4-Oct-2010 → 8-Oct-2010

Access to Document

http://adsabs.harvard.edu/abs/2010DPS....42.5703H

Cite this

Howell, E. S., Magri, C., Nolan, M. C., Taylor, P. A., Vervack, R. J. . J., Fernandez, Y. R., Mueller, M., Benner, L. A. M., Giorgini, J. D., Scheeres, D. J., Hicks, M. D., Rhoades, H., Somers, J. M., Gaftonyuk, N. M., Krugly, Y. N., Kouprianov, V. V., Molotov, I. E., Benishek, V., Protitch-Benishek, V., ... Pray, D. (2010). Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations. Bulletin of the American Astronomical Society, 42, 1080. http://adsabs.harvard.edu/abs/2010DPS....42.5703H

Howell, Ellen S. ; Magri, C. ; Nolan, M. C. ; Taylor, P. A. ; Vervack, R. J., Jr. ; Fernandez, Y. R. ; Mueller, M. ; Benner, L. A. M. ; Giorgini, J. D. ; Scheeres, D. J. ; Hicks, M. D. ; Rhoades, H. ; Somers, J. M. ; Gaftonyuk, N. M. ; Krugly, Y. N. ; Kouprianov, V. V. ; Molotov, I. E. ; Benishek, V. ; Protitch-Benishek, V. ; Galad, A. ; Higgins, D. ; Kusnirak, P. ; Pray, D. / Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations. In: Bulletin of the American Astronomical Society. 2010 ; Vol. 42. pp. 1080.

@article{e1ac1a0e3993442c861c8d63a9c3b2e9,

title = "Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations",

abstract = "We observed near-Earth asteroid (8567) 1996 HW1 at the Arecibo Observatory on six dates in September 2008, obtaining radar images and spectra. By combining these data with an extensive set of new lightcurves taken during 2008-2009 and with previously published lightcurves from 2005, we were able to reconstruct the object's shape and spin state. 1996 HW1 is an elongated, highly bifurcated object, and appears to be a contact binary. A convex shape model derived from the lightcurves alone produces a pole orientation that is consistent with the pole derived from the radar data. It is instructive to compare these two shape models. We have also obtained near-infrared spectra at the NASA IRTF using SpeX in both prism and LXD modes. The prism spectra show pyroxene and olivine bands. We obtained LXD spectra (2-4 microns) on 19 August, 1 September and 1 October 2008. Thermal modeling using the shape model and derived pole and rotation constrain the regolith properties. The radar shape model and results of the thermal modeling will be presented.",

author = "Howell, {Ellen S.} and C. Magri and Nolan, {M. C.} and Taylor, {P. A.} and Vervack, {R. J., Jr.} and Fernandez, {Y. R.} and M. Mueller and Benner, {L. A. M.} and Giorgini, {J. D.} and Scheeres, {D. J.} and Hicks, {M. D.} and H. Rhoades and Somers, {J. M.} and Gaftonyuk, {N. M.} and Krugly, {Y. N.} and Kouprianov, {V. V.} and Molotov, {I. E.} and V. Benishek and V. Protitch-Benishek and A. Galad and D. Higgins and P. Kusnirak and D. Pray",

year = "2010",

month = oct,

day = "1",

language = "English",

volume = "42",

pages = "1080",

journal = "Bulletin of the American Astronomical Society",

issn = "0002-7537",

publisher = "American Astronomical Society",

note = "42nd Meeting, American Astronomical Society, 2010 ; Conference date: 04-10-2010 Through 08-10-2010",

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Howell, ES, Magri, C, Nolan, MC, Taylor, PA, Vervack, RJJ, Fernandez, YR, Mueller, M, Benner, LAM, Giorgini, JD, Scheeres, DJ, Hicks, MD, Rhoades, H, Somers, JM, Gaftonyuk, NM, Krugly, YN, Kouprianov, VV, Molotov, IE, Benishek, V, Protitch-Benishek, V, Galad, A, Higgins, D, Kusnirak, P & Pray, D 2010, 'Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations', Bulletin of the American Astronomical Society, vol. 42, pp. 1080. <http://adsabs.harvard.edu/abs/2010DPS....42.5703H>

Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations. / Howell, Ellen S.; Magri, C.; Nolan, M. C.; Taylor, P. A.; Vervack, R. J., Jr.; Fernandez, Y. R.; Mueller, M.; Benner, L. A. M.; Giorgini, J. D.; Scheeres, D. J.; Hicks, M. D.; Rhoades, H.; Somers, J. M.; Gaftonyuk, N. M.; Krugly, Y. N.; Kouprianov, V. V.; Molotov, I. E.; Benishek, V.; Protitch-Benishek, V.; Galad, A.; Higgins, D.; Kusnirak, P.; Pray, D.

In: Bulletin of the American Astronomical Society, Vol. 42, 01.10.2010, p. 1080.

Research output: Contribution to journal › Meeting Abstract › Academic

TY - JOUR

T1 - Radar Shape Modeling Of (8567) 1996 HW1 Combined With Thermal Observations

AU - Howell, Ellen S.

AU - Magri, C.

AU - Nolan, M. C.

AU - Taylor, P. A.

AU - Vervack, R. J., Jr.

AU - Fernandez, Y. R.

AU - Mueller, M.

AU - Benner, L. A. M.

AU - Giorgini, J. D.

AU - Scheeres, D. J.

AU - Hicks, M. D.

AU - Rhoades, H.

AU - Somers, J. M.

AU - Gaftonyuk, N. M.

AU - Krugly, Y. N.

AU - Kouprianov, V. V.

AU - Molotov, I. E.

AU - Benishek, V.

AU - Protitch-Benishek, V.

AU - Galad, A.

AU - Higgins, D.

AU - Kusnirak, P.

AU - Pray, D.

PY - 2010/10/1

Y1 - 2010/10/1

N2 - We observed near-Earth asteroid (8567) 1996 HW1 at the Arecibo Observatory on six dates in September 2008, obtaining radar images and spectra. By combining these data with an extensive set of new lightcurves taken during 2008-2009 and with previously published lightcurves from 2005, we were able to reconstruct the object's shape and spin state. 1996 HW1 is an elongated, highly bifurcated object, and appears to be a contact binary. A convex shape model derived from the lightcurves alone produces a pole orientation that is consistent with the pole derived from the radar data. It is instructive to compare these two shape models. We have also obtained near-infrared spectra at the NASA IRTF using SpeX in both prism and LXD modes. The prism spectra show pyroxene and olivine bands. We obtained LXD spectra (2-4 microns) on 19 August, 1 September and 1 October 2008. Thermal modeling using the shape model and derived pole and rotation constrain the regolith properties. The radar shape model and results of the thermal modeling will be presented.

AB - We observed near-Earth asteroid (8567) 1996 HW1 at the Arecibo Observatory on six dates in September 2008, obtaining radar images and spectra. By combining these data with an extensive set of new lightcurves taken during 2008-2009 and with previously published lightcurves from 2005, we were able to reconstruct the object's shape and spin state. 1996 HW1 is an elongated, highly bifurcated object, and appears to be a contact binary. A convex shape model derived from the lightcurves alone produces a pole orientation that is consistent with the pole derived from the radar data. It is instructive to compare these two shape models. We have also obtained near-infrared spectra at the NASA IRTF using SpeX in both prism and LXD modes. The prism spectra show pyroxene and olivine bands. We obtained LXD spectra (2-4 microns) on 19 August, 1 September and 1 October 2008. Thermal modeling using the shape model and derived pole and rotation constrain the regolith properties. The radar shape model and results of the thermal modeling will be presented.

M3 - Meeting Abstract

VL - 42

SP - 1080

JO - Bulletin of the American Astronomical Society

JF - Bulletin of the American Astronomical Society

SN - 0002-7537

T2 - 42nd Meeting, American Astronomical Society, 2010

Y2 - 4 October 2010 through 8 October 2010

ER -