Validation of stereophotoclinometric shape models of asteroid (101955) Bennu during the OSIRIS-REx mission

M. M. Al Asad; L. C. Philpott; C. L. Johnson; O. S. Barnouin; E. Palmer; J. R. Weirich; M. G. Daly; M. E. Perry; R. Gaskell; E. B. Bierhaus; J. A. Seabrook; R. Espiritu; H. Nair; C. Ernst; R. T. Daly; M. C. Nolan; H. L. Enos; D. S. Lauretta

doi:10.3847/PSJ/abe4dc

Validation of stereophotoclinometric shape models of asteroid (101955) Bennu during the OSIRIS-REx mission

M. M. Al Asad, L. C. Philpott, C. L. Johnson, O. S. Barnouin, E. Palmer, J. R. Weirich, M. G. Daly, M. E. Perry, R. Gaskell, E. B. Bierhaus, J. A. Seabrook, R. Espiritu, H. Nair, C. Ernst, R. T. Daly, M. C. Nolan, H. L. Enos, D. S. Lauretta

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Abstract

NASA’s OSIRIS-REx mission to asteroid (101955) Bennu relied on the production of real-time shape models for both spacecraft navigation and scientific analysis. The primary method of constructing shape models during the early phases of the mission was image-based stereophotoclinometry (SPC). The SPC shape models were used for operational planning, navigation, sample site selection, and initial scientific investigations. To this end, detailed analyses of the quality of each shape model and a thorough documentation of all sources of error were vital to ensure proper considerations of the limitations of each model. In this paper, we present methods used during the OSIRIS-REx mission to validate the SPC shape models and construct the associated quality reports. Although developed for the OSIRIS-REx mission, these validation techniques can be applied to SPC-derived shape models of other planetary bodies.

Original language	English (US)
Article number	abe4dc
Journal	Planetary Science Journal
Volume	2
Issue number	2
DOIs	https://doi.org/10.3847/PSJ/abe4dc
State	Published - Apr 2021

ASJC Scopus subject areas

Astronomy and Astrophysics
Geophysics
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science

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10.3847/PSJ/abe4dc

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Al Asad, M. M., Philpott, L. C., Johnson, C. L., Barnouin, O. S., Palmer, E., Weirich, J. R., Daly, M. G., Perry, M. E., Gaskell, R., Bierhaus, E. B., Seabrook, J. A., Espiritu, R., Nair, H., Ernst, C., Daly, R. T., Nolan, M. C., Enos, H. L., & Lauretta, D. S. (2021). Validation of stereophotoclinometric shape models of asteroid (101955) Bennu during the OSIRIS-REx mission. Planetary Science Journal, 2(2), Article abe4dc. https://doi.org/10.3847/PSJ/abe4dc

Al Asad, MM, Philpott, LC, Johnson, CL, Barnouin, OS, Palmer, E, Weirich, JR, Daly, MG, Perry, ME, Gaskell, R, Bierhaus, EB, Seabrook, JA, Espiritu, R, Nair, H, Ernst, C, Daly, RT, Nolan, MC, Enos, HL & Lauretta, DS 2021, 'Validation of stereophotoclinometric shape models of asteroid (101955) Bennu during the OSIRIS-REx mission', Planetary Science Journal, vol. 2, no. 2, abe4dc. https://doi.org/10.3847/PSJ/abe4dc

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title = "Validation of stereophotoclinometric shape models of asteroid (101955) Bennu during the OSIRIS-REx mission",

abstract = "NASA{\textquoteright}s OSIRIS-REx mission to asteroid (101955) Bennu relied on the production of real-time shape models for both spacecraft navigation and scientific analysis. The primary method of constructing shape models during the early phases of the mission was image-based stereophotoclinometry (SPC). The SPC shape models were used for operational planning, navigation, sample site selection, and initial scientific investigations. To this end, detailed analyses of the quality of each shape model and a thorough documentation of all sources of error were vital to ensure proper considerations of the limitations of each model. In this paper, we present methods used during the OSIRIS-REx mission to validate the SPC shape models and construct the associated quality reports. Although developed for the OSIRIS-REx mission, these validation techniques can be applied to SPC-derived shape models of other planetary bodies.",

author = "{Al Asad}, {M. M.} and Philpott, {L. C.} and Johnson, {C. L.} and Barnouin, {O. S.} and E. Palmer and Weirich, {J. R.} and Daly, {M. G.} and Perry, {M. E.} and R. Gaskell and Bierhaus, {E. B.} and Seabrook, {J. A.} and R. Espiritu and H. Nair and C. Ernst and Daly, {R. T.} and Nolan, {M. C.} and Enos, {H. L.} and Lauretta, {D. S.}",

note = "Funding Information: This material is based upon work supported by NASA under contract NNM10AA11C issued through the New Frontiers Program. The OLA and funding for the Canadian authors were provided by the Canadian Space Agency. We are grateful to the entire OSIRIS-REx Team for making the encounter with Bennu possible. Publisher Copyright: {\textcopyright} 2021. The Author(s). Published by the American Astronomical Society.",

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doi = "10.3847/PSJ/abe4dc",

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AU - Philpott, L. C.

AU - Johnson, C. L.

AU - Barnouin, O. S.

AU - Palmer, E.

AU - Weirich, J. R.

AU - Daly, M. G.

AU - Perry, M. E.

AU - Gaskell, R.

AU - Bierhaus, E. B.

AU - Seabrook, J. A.

AU - Espiritu, R.

AU - Nair, H.

AU - Ernst, C.

AU - Daly, R. T.

AU - Nolan, M. C.

AU - Enos, H. L.

AU - Lauretta, D. S.

N1 - Funding Information: This material is based upon work supported by NASA under contract NNM10AA11C issued through the New Frontiers Program. The OLA and funding for the Canadian authors were provided by the Canadian Space Agency. We are grateful to the entire OSIRIS-REx Team for making the encounter with Bennu possible. Publisher Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

PY - 2021/4

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N2 - NASA’s OSIRIS-REx mission to asteroid (101955) Bennu relied on the production of real-time shape models for both spacecraft navigation and scientific analysis. The primary method of constructing shape models during the early phases of the mission was image-based stereophotoclinometry (SPC). The SPC shape models were used for operational planning, navigation, sample site selection, and initial scientific investigations. To this end, detailed analyses of the quality of each shape model and a thorough documentation of all sources of error were vital to ensure proper considerations of the limitations of each model. In this paper, we present methods used during the OSIRIS-REx mission to validate the SPC shape models and construct the associated quality reports. Although developed for the OSIRIS-REx mission, these validation techniques can be applied to SPC-derived shape models of other planetary bodies.

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Validation of stereophotoclinometric shape models of asteroid (101955) Bennu during the OSIRIS-REx mission

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