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Spitzer observations of the asteroid-comet transition object and potential spacecraft target 107P (4015) Wilson-Harrington

Licandro, J., Campins, H., Kelley, M., Fernandez, Y., Delbo, M., Reach, W.T., Groussin, O., Lamy, P.L., Toth, I., A'Hearn, M.F., and others. (2009) Spitzer observations of the asteroid-comet transition object and potential spacecraft target 107P (4015) Wilson-Harrington. Astronomy and Astrophysics, 507 (3). pp. 1667-1670. ISSN 0004-6361. E-ISSN 1432-0746. (doi:10.1051/0004-6361/200913116) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1051/0004-6361/200913116

Abstract

Context.Near-Earth asteroid-comet transition object 107P/ (4015) Wilson-Harrington is a possible target of the joint European Space Agency (ESA) and Japanese Aerospace Exploration Agency (JAXA) Marco Polo sample return mission. Physical studies of this object are relevant to this mission, and also to understanding its asteroidal or cometary nature. Aims.Our aim is to obtain significant new constraints on the surface thermal properties of this object. Methods. We present mid-infrared photometry in two filters (16 and 22 μm) obtained with NASA's Spitzer Space Telescope on February 12, 2007, and results from the application of the Near Earth Asteroid Thermal Model (NEATM). We obtained high S/N in two mid-IR bands allowing accurate measurements of its thermal emission. Results.We obtain a well constrained beaming parameter (n = 1.39 ± 0.26) and obtain a diameter and geometric albedo of D = 3.46 ± 0.32 km, and pV = 0.059 ± 0.011. We also obtain similar results when we apply this best-fitting thermal model to single-band mid-IR photometry reported by Campins et al. (1995, P&SS, 43, 733), Kraemer et al. (2005, AJ, 130, 2363) and Reach et al. (2007, Icarus, 191, 298). Conclusions. The albedo of 4015 Wilson-Harrington is low, consistent with those of comet nuclei and primitive C-, P-, D-type asteorids. We establish a rough lower limit for the thermal inertia of W-H of 60 Jm.2s.0.5 K.1 when it is at r = 1 AU, which is slightly over the limit of 30 Jm.2 s.0.5 K.1 derived by Groussin et al. (2009, Icarus, 199, 568) for the thermal inertia of the nucleus of comet 22P/Kopff. © 2009 ESO.

Item Type: Article
DOI/Identification number: 10.1051/0004-6361/200913116
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Astron. Astrophys. [Field not mapped to EPrints] AD - Instituto de Astrofísica de Canarias, c/vía Láctea s/n, 38200 La Laguna, Tenerife, Spain [Field not mapped to EPrints] AD - Departamento de Astrofísica, Universidad de la Laguna, 38205 La Laguna, Tenerife, Spain [Field not mapped to EPrints] AD - Physics Department, University of Central Florida, Orlando, FL, 32816, United States [Field not mapped to EPrints] AD - Department of Astronomy, University of Maryland, College Park, MD 20742-2421, United States [Field not mapped to EPrints] AD - UNS, CNRS, Observatoire de la Côte d'Azur, Nice, France [Field not mapped to EPrints] AD - IPAC, MS 220-6, Caltech, Pasadena, CA 91125, United States [Field not mapped to EPrints] AD - Laboratoire d'Astrophysique de Marseille, CNRS, Université de Provence, 13388 Marseille Cedex 13, France [Field not mapped to EPrints] AD - Konkoly Obs., PO Box 67, 1525, Hungary [Field not mapped to EPrints] AD - Dept. of Astronomy, Univ. of Maryland, College Park, MD 20742, United States [Field not mapped to EPrints] AD - NASA/JPL, 4800 Oak Grove Dr., Pasadena, CA 91109, United States [Field not mapped to EPrints] AD - Centre for Astrophysics and Planetary Science, Univ. of Kent, Canterbury CT2 7NH, United Kingdom [Field not mapped to EPrints] AD - Astrophysics Research Centre, Queens Univ. Belfast, Belfast BT7 1NN, United Kingdom [Field not mapped to EPrints] AD - Johns Hopkins Univ., Applied Physics Lab., 11100 Johns Hopkins Rd, Laurel, MD 20723, United States [Field not mapped to EPrints] AD - Inst. for Astronomy, Univ. of Hawaii, 2680 Woodlawn Dr., Honolulu, HI 96822, United States [Field not mapped to EPrints] AD - Astronomical Institute, Slovak Academy of Sciences, Slovak Republic, 845 04 Bratislava, Slovakia [Field not mapped to EPrints] AD - ESO, Alonso de Córdova 3107, Vitacura, Santiago, Chile [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Comets: individual: 107P (4015) Wilson-Harrington, Infrared: solar system, Minor planets, asteroids, Accurate measurement, Comets:individual, European Space Agency, Infrared: solar system, IR bands, Lower limits, Midinfrared, Minor planets , asteroids, Near-Earth asteroids, Sample return, Spitzer, Spitzer Space Telescope, Thermal emissions, Thermal inertia, Thermal model, Thermal properties, Earth (planet), NASA, Photometers, Photometry, Planets, Societies and institutions, Solar equipment, Solar radiation, Space flight, Space telescopes, Spacecraft observatories, Thermodynamic properties, Thermography (temperature measurement), Asteroids
Subjects: Q Science > QB Astronomy
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Stephen Lowry
Date Deposited: 08 Dec 2015 22:56 UTC
Last Modified: 29 May 2019 16:29 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/52291 (The current URI for this page, for reference purposes)
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