English: Diagrams showing the location and characteristics of the
Hygiea family of
asteroids. Where circles are plotted, their diameter is proportional to the mean diameter of the asteroid.
core family members (shown in red) are those identified by the 1995 Zappala (V. Zappala et al, Icarus Vol. 116, p. 291 (1995)) HCM method analysis. The data set
is here.
interlopers (shown in green) were identified either:
by the spectroscopic analysis of Mothé-Diniz (T. Mothé-Diniz et al Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family, Icarus, Vol. 152, p. 117 (2001)),
and also by inspection of the
PDS asteroid taxonomy data set for non C,B,or X-type members of the above Zappala 1995 data-set.
additional significant asteroids (shown in orange), that may be members of the family (although probably interlopers).
additional significant non-family asteroids (shown in light blue) in the vicinity, but apparently not members of the family (
52 Europa and
159 Aemilia). It is not clear why the latter was not included as a family member by the Zappalà analysis.
numbered asteroids in general (shown as small blue dots), from the AstDys database.
The location of asteroids that are very large and/or explicitly named on the plot is shown by a light cross within the circle.
Asteroid diameters were obtained from two sources:
(thick circles): From the IRAS survey, when available (data set
here).
(thin circles): Otherwise, by assuming an albedo of 0.072 (same as
10 Hygiea), and estimating from absolute magnitudes from the AstOrb database
herearchive copy at the Wayback Machine.
The diagrams were created by
me (Piotr Deuar) using proper element data for 96944
minor planets, which was obtained from the
AstDys site. Data was dated March 2005, calculation was by Z. Knezevic and A. Milani.
Deuar at the
English-language Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the
Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the
same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL
licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue
English: Diagrams showing the location and characteristics of the
Hygiea family of
asteroids. Where circles are plotted, their diameter is proportional to the mean diameter of the asteroid.
core family members (shown in red) are those identified by the 1995 Zappala (V. Zappala et al, Icarus Vol. 116, p. 291 (1995)) HCM method analysis. The data set
is here.
interlopers (shown in green) were identified either:
by the spectroscopic analysis of Mothé-Diniz (T. Mothé-Diniz et al Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family, Icarus, Vol. 152, p. 117 (2001)),
and also by inspection of the
PDS asteroid taxonomy data set for non C,B,or X-type members of the above Zappala 1995 data-set.
additional significant asteroids (shown in orange), that may be members of the family (although probably interlopers).
additional significant non-family asteroids (shown in light blue) in the vicinity, but apparently not members of the family (
52 Europa and
159 Aemilia). It is not clear why the latter was not included as a family member by the Zappalà analysis.
numbered asteroids in general (shown as small blue dots), from the AstDys database.
The location of asteroids that are very large and/or explicitly named on the plot is shown by a light cross within the circle.
Asteroid diameters were obtained from two sources:
(thick circles): From the IRAS survey, when available (data set
here).
(thin circles): Otherwise, by assuming an albedo of 0.072 (same as
10 Hygiea), and estimating from absolute magnitudes from the AstOrb database
herearchive copy at the Wayback Machine.
The diagrams were created by
me (Piotr Deuar) using proper element data for 96944
minor planets, which was obtained from the
AstDys site. Data was dated March 2005, calculation was by Z. Knezevic and A. Milani.
Deuar at the
English-language Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the
Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the
same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL
licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue