Collection Information
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| IDENTIFIER |
urn:nasa:pds:compil-comet:halebopp::1.0
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| NAME |
Hale-Bopp Visual Lightcurve
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| TYPE |
Data
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| DESCRIPTION |
This dataset contains visual magnitudes of comet C/1995 O1 (Hale-Bopp) that wereobtained from the International Comet Quarterly and processed to provide a secularlightcurve from -7 au (pre-perihelion) to +8 au (post-perihelion). The originalapparent magnitudes from 17 observers were corrected for geocentric distance andphase angle, and then combined in a systematic way that yielded a self-consistentconsensus fit. In analyzing visual data from multiple observers, the questionsinevitably arise of which data to reject, and under what justification, and whethercombining data from observers, each with their own systematic errors, leads to abiased result. Without instrumental calibration, there is no certain answer to thesequestions, and such calibration is not available for the observations discussed here.We estimated the shifts with a self-consistent statistical approach, leading to asharper light curve and improving the precision of the measured slopes. The datasetincludes the original apparent magnitudes, those corrected for geocentric distanceand phase angle, and the final shifted and weighted values. The final secularlightcurve is the best produced to date for comet Hale-Bopp.
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| SEARCH/ACCESS DATA |
Comet Data Compilations from Published Sources Archive Online
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| |
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| Citation |
| DIGITAL OBJECT IDENTIFIER (DOI) |
10.26007/xbsh-x639
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| AUTHORS |
Womack, M.; Curtis, A.; Lastra, N.; Harrington Pinto, O.; Rabson, D.A.; Wierzchos,K.; Cox, T.; Rivera, I.; Mentzer, C.; Ruffini, N.; Jackson, C.; and Micciche, A.
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| EDITORS |
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| PUBLICATION YEAR |
2018
|
| DESCRIPTION |
This dataset contains visual magnitudes of comet C/1995 O1 (Hale-Bopp) that wereobtained from the International Comet Quarterly and processed to provide a secularlightcurve from -7 au (pre-perihelion) to +8 au (post-perihelion). The originalapparent magnitudes from 17 observers were corrected for geocentric distance andphase angle, and then combined in a systematic way that yielded a self-consistentconsensus fit. In analyzing visual data from multiple observers, the questionsinevitably arise of which data to reject, and under what justification, and whethercombining data from observers, each with their own systematic errors, leads to abiased result. Without instrumental calibration, there is no certain answer to thesequestions, and such calibration is not available for the observations discussed here.We estimated the shifts with a self-consistent statistical approach, leading to asharper light curve and improving the precision of the measured slopes. The datasetincludes the original apparent magnitudes, those corrected for geocentric distanceand phase angle, and the final shifted and weighted values. The final secularlightcurve is the best produced to date for comet Hale-Bopp.
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| |
|
| Context |
| START DATE TIME |
1995-07-24T02:09:36.000Z
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| STOP DATE TIME |
1999-09-23T04:33:36.000Z
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| LOCAL MEAN SOLAR TIME |
|
| LOCAL TRUE SOLAR TIME |
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| SOLAR LONGITUDE |
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| PRIMARY RESULT PURPOSE |
Science
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| PRIMARY RESULT PROCESSING LEVEL |
Calibrated
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| PRIMARY RESULT DESCRIPTION |
|
| PRIMARY RESULT WAVELENGTH RANGE |
Visible
Visible
Visible
Visible
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| PRIMARY RESULT DOMAIN |
|
| PRIMARY RESULT DISCIPLINE NAME |
Small Bodies
Spectroscopy
Flux Measurements
Spectroscopy
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| INVESTIGATION |
No Specific Investigation
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| OBSERVING SYSTEM |
|
| OBSERVING SYSTEM COMPONENT |
|
| TARGET |
C/1995 O1 (HALE-BOPP)
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| REFERENCES |
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