G. J. Consolmagno

Vatican Observatory

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Co-Authors

R. J. Macke

Vatican Secret Archives

D. T. Britt

University of Central Florida

Cyril Opeil

Boston College

D. Turrini

Osservatorio Astrofisico di Torino

V. V. Svetsov

Institute of Geosphere Dynamics

Daniel M. Davis

Imperial College London

Sin‐iti Sirono

Nagoya University

K. H. Joy

University of Manchester

Paul A. Nyffenegger

Quantum Technology Sciences (United States)

W. Romanishin

University of Oklahoma

Cooperative Institutions

Planetary Science Institute

University of Arizona

Jet Propulsion Laboratory

Centre National de la Recherche Scientifique

Arizona State University

University of Hawaii System

University of Hawaiʻi at Mānoa

Lunar and Planetary Institute

Max Planck Society

University of Washington

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REE patterns versus the origin of the basaltic achondrites

Icarus (1979)

G. J. Consolmagno

Achondrite

Parent body

10.1016/0019-1035(79)90045-9

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Citations (10)

Weathering and Porosity: A Preliminary SEM Study of Weathered Meteorites

Lunar and Planetary Science Conference (1999)

G. J. Consolmagno P. A. Bland M. M. Strait

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Citations (1)

Radar constraints on asteroid regolith properties using 433 Eros as ground truth

Meteoritics and Planetary Science (2001)

C. Magri G. J. Consolmagno Steven J. Ostrch Lance A. M. Benner Brett R. Beeney

Abstract— Radar data enable us to estimate an asteroid's near‐surface bulk density, thus providing a joint constraint on near‐surface porosity and solid density. We investigate two different approaches to simplifying this joint constraint: estimating solid densities by assuming uniform porosities for all asteroids; and estimating porosities by assuming uniform mineralogy within each taxonomic class. Methods used to estimate asteroids' near‐surface solid densities from radar data have not previously been calibrated via independent estimates. Recent spacecraft results on the chondritic nature of 433 Eros now permit such a check, and also support porosity estimation for S‐class objects. We use radar albedos and polarization ratios estimated for 36 main‐belt asteroids and nine near‐Earth asteroids to estimate near‐surface solid densities using two methods, one of which is similar to the uncalibrated algorithms used in previous studies, the other of which treats Eros as a calibrator. We also derive porosities for the same sample by assigning solid densities for each taxonomic class in advance. Density‐estimation results obtained for Eros itself are consistent with the uncalibrated method being valid in the mean; those derived for the full sample imply that uncalibrated solid densities are, at most, a few tens of percent too large on average. However, some derived densities are extremely low, whereas most porosity estimates are physically plausible. We discuss the relative merits of these two approaches.

Regolith

10.1111/j.1945-5100.2001.tb01857.x

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Citations (80)

The Magnetic Reynolds Number of the Solar Nebula

Meteoritics and Planetary Science (1977)

G. J. Consolmagno

Magnetic Reynolds number

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Sulfur Volcanoes on Io

Science (1979)

G. J. Consolmagno

Widespread volcanism on Jupiter's satellite Io, if it occurred over the age of the solar system, would quickly reduce the inventory of most common volatiles needed to drive such volcanism. One exception is the volatile element sulfur. It is therefore postulated that sulfur is the driving volatile for Ionian volcanism. Its presence is consistent with a carbonaceous-chondrite-like bulk composition for the original material that formed Io 4.5 billion years ago. The ubiquity of sulfur on Io today demonstrates the importance of this element in the processes that formed its surface.

Volatiles

Jupiter (rocket family)

10.1126/science.205.4404.397

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Citations (8)

Seasonal Objects: Spring

Cambridge University Press eBooks (2009)

G. J. Consolmagno Daniel M. Davis

A summary is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.

Content (measure theory)

10.1017/cbo9780511536397.006

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Citations (0)

Io: Thermal models and chemical evolution

Icarus (1981)

G. J. Consolmagno

Outgassing

Chemical evolution

Chemical state

10.1016/0019-1035(81)90089-0

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Citations (36)

1998 SM ₁₆₅ : A large Kuiper belt object with an irregular shape

Proceedings of the National Academy of Sciences (2001)

W. Romanishin S. C. Tegler T. W. Rettig G. J. Consolmagno B. Botthof

The recent discovery of an ancient reservoir of icy bodies at and beyond the orbit of Neptune-the Kuiper belt-has opened a new frontier in astronomy. Measurements of the physical and chemical nature of Kuiper belt objects (KBOs) can constrain our ideas of the processes of planet formation and evolution. Our 1.8-m Vatican Advanced Technology Telescope and charge-coupled device camera observations of the KBO 1998 SM(165) indicate its brightness periodically varies by 0.56 magnitudes over a 4-h interval. If we assume a uniform albedo of 0.04, which is typical of values found in the literature for a handful of KBOs, and an "equator-on" aspect, we find 1998 SM(165) has axes of length 600 x 360 km. If our assumptions are correct, such dimensions put 1998 SM(165) among the largest elongated objects known in our solar system. Perhaps long ago, two nearly spherical KBOs of comparable size coalesced to form a compound object, or perhaps 1998 SM(165) is the residual core of a catastrophic fragmentation of a larger precursor.

Neptune

Albedo (alchemy)

Trans-Neptunian object

Billion years

10.1073/pnas.211147998

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Citations (17)

COMMISSION 22: METERS, METEORITES AND INTERPLANETARY DUST

Proceedings of the International Astronomical Union (2010)

J. Watanabe Peter Jenniskens Pavel Spurný Jiří Borovička M. Campbell‐Brown

The business meeting of commission 22 was held at the room 5 in the SulAmerica Convention Center in Rio de Janeiro(14:00-15:30). Fifteen people attended at this meeting:J.Borovička, E.Bowell, G.Consolmagno, D.Green, P. Jenniskens, A. Pellinen-Wannberg, R. Rudawska, J. Watanabe, J. Zhu, P. H. A. Hasselmann, F. Ostroviski, D. A. Oszkiewicz, W. Thuillot, P. Mahajani, and A. Sule. This meeting was managed by Junichi Watanabe, the current C22 Vice-President. The summary of the meeting is described.

10.1017/s1743921310004977

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Citations (3)

Tectonic lineations and frictional faulting on a relatively simple body (Ariel)

Planetary and Space Science (1997)

Paul A. Nyffenegger Daniel M. Davis G. J. Consolmagno

Lineation

Asthenosphere

10.1016/s0032-0633(97)00102-5

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Citations (6)