Online multi-parameter phase-curve fitting and application to a large corpus of asteroid photometric data

D. A. Oszkiewicz; K. Muinonen; E. Bowell; D. Trilling; A. Penttilä; T. Pieniluoma; L. H. Wasserman; M. T. Enga

doi:10.1016/j.jqsrt.2011.03.003

Online multi-parameter phase-curve fitting and application to a large corpus of asteroid photometric data

D. A. Oszkiewicz, K. Muinonen, E. Bowell, D. Trilling, A. Penttilä, T. Pieniluoma, L. H. Wasserman, M. T. Enga

Astronomy and Planetary Sciences

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

We apply the new H,G₁₂ and H,G₁,G₂ phase functions to a large corpus of asteroid photometric data. We make use of low-precision (generally rounded to 0.1mag) and low-accuracy (rms magnitude uncertainties of ±0.2-0.3mag) data obtained from the Minor Planet Center and modified at Lowell Observatory. We find (1) a correlation between G₁,G₂ values derived for asteroid families and albedos; (2) G₁₂ homogeneity in families. In addition, we make available an online Java applet (titled Asteroid Phase Function Analyzer). The applet may be used to compute asteroid absolute magnitudes and slope parameters using three different phase functions: the H,G, H,G₁,G₂, and H,G₁₂. The tool also includes non-Gaussian error analysis using Monte Carlo methods. The applet is available at http://asteroid.astro.helsinki.fi/astphase/.

Original language	English (US)
Pages (from-to)	1919-1929
Number of pages	11
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	112
Issue number	11
DOIs	https://doi.org/10.1016/j.jqsrt.2011.03.003
State	Published - Jul 2011

Keywords

Absolute magnitude
Asteroids
Java applet
Phase angle
Phase curve
Phase function

ASJC Scopus subject areas

Radiation
Atomic and Molecular Physics, and Optics
Spectroscopy

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10.1016/j.jqsrt.2011.03.003

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@article{2a2ac1a036b5497f986cafc0ec14699d,

title = "Online multi-parameter phase-curve fitting and application to a large corpus of asteroid photometric data",

abstract = "We apply the new H,G12 and H,G1,G2 phase functions to a large corpus of asteroid photometric data. We make use of low-precision (generally rounded to 0.1mag) and low-accuracy (rms magnitude uncertainties of ±0.2-0.3mag) data obtained from the Minor Planet Center and modified at Lowell Observatory. We find (1) a correlation between G1,G2 values derived for asteroid families and albedos; (2) G12 homogeneity in families. In addition, we make available an online Java applet (titled Asteroid Phase Function Analyzer). The applet may be used to compute asteroid absolute magnitudes and slope parameters using three different phase functions: the H,G, H,G1,G2, and H,G12. The tool also includes non-Gaussian error analysis using Monte Carlo methods. The applet is available at http://asteroid.astro.helsinki.fi/astphase/.",

keywords = "Absolute magnitude, Asteroids, Java applet, Phase angle, Phase curve, Phase function",

author = "Oszkiewicz, {D. A.} and K. Muinonen and E. Bowell and D. Trilling and A. Penttil{\"a} and T. Pieniluoma and Wasserman, {L. H.} and Enga, {M. T.}",

note = "Funding Information: Research has been supported by the Magnus Ehrnrooth Foundation, Academy of Finland (project Nr. 127461), Lowell Observatory, and the Spitzer Science Center. We would like to thank Michael Thomas Flanagan for developing and maintaining the Java Scientific Library, which we have used in the Asteroid Phase Function Analyzer. DO thanks Berry Holl for help with Java plotters and Saeid Zoonemat Kermani for valuable advice on Java applets. We thank the Department of Physics of Northern Arizona University for CPU time on its Javelina open cluster allocated for our computing.",

year = "2011",

month = jul,

doi = "10.1016/j.jqsrt.2011.03.003",

language = "English (US)",

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journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",

issn = "0022-4073",

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T1 - Online multi-parameter phase-curve fitting and application to a large corpus of asteroid photometric data

AU - Oszkiewicz, D. A.

AU - Muinonen, K.

AU - Bowell, E.

AU - Trilling, D.

AU - Penttilä, A.

AU - Pieniluoma, T.

AU - Wasserman, L. H.

AU - Enga, M. T.

N1 - Funding Information: Research has been supported by the Magnus Ehrnrooth Foundation, Academy of Finland (project Nr. 127461), Lowell Observatory, and the Spitzer Science Center. We would like to thank Michael Thomas Flanagan for developing and maintaining the Java Scientific Library, which we have used in the Asteroid Phase Function Analyzer. DO thanks Berry Holl for help with Java plotters and Saeid Zoonemat Kermani for valuable advice on Java applets. We thank the Department of Physics of Northern Arizona University for CPU time on its Javelina open cluster allocated for our computing.

PY - 2011/7

Y1 - 2011/7

N2 - We apply the new H,G12 and H,G1,G2 phase functions to a large corpus of asteroid photometric data. We make use of low-precision (generally rounded to 0.1mag) and low-accuracy (rms magnitude uncertainties of ±0.2-0.3mag) data obtained from the Minor Planet Center and modified at Lowell Observatory. We find (1) a correlation between G1,G2 values derived for asteroid families and albedos; (2) G12 homogeneity in families. In addition, we make available an online Java applet (titled Asteroid Phase Function Analyzer). The applet may be used to compute asteroid absolute magnitudes and slope parameters using three different phase functions: the H,G, H,G1,G2, and H,G12. The tool also includes non-Gaussian error analysis using Monte Carlo methods. The applet is available at http://asteroid.astro.helsinki.fi/astphase/.

AB - We apply the new H,G12 and H,G1,G2 phase functions to a large corpus of asteroid photometric data. We make use of low-precision (generally rounded to 0.1mag) and low-accuracy (rms magnitude uncertainties of ±0.2-0.3mag) data obtained from the Minor Planet Center and modified at Lowell Observatory. We find (1) a correlation between G1,G2 values derived for asteroid families and albedos; (2) G12 homogeneity in families. In addition, we make available an online Java applet (titled Asteroid Phase Function Analyzer). The applet may be used to compute asteroid absolute magnitudes and slope parameters using three different phase functions: the H,G, H,G1,G2, and H,G12. The tool also includes non-Gaussian error analysis using Monte Carlo methods. The applet is available at http://asteroid.astro.helsinki.fi/astphase/.

KW - Absolute magnitude

KW - Asteroids

KW - Java applet

KW - Phase angle

KW - Phase curve

KW - Phase function

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JF - Journal of Quantitative Spectroscopy and Radiative Transfer

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ER -

Online multi-parameter phase-curve fitting and application to a large corpus of asteroid photometric data

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Keywords

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