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Date and Time of the Query: 2022-01-19 T07:02:04 PST
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Diameter data point(s) for object MESSIER 042

Diameter Data --- Published and Homogenized (arcsec) Units

  Published UnitsHomogenized Units
No.Observed Passband
REFCODE
Major Axis
(2a)
Major Axis UnitsMinor Axis
(2b)
Minor Axis UnitsAxis Ratio (b/a)Major Axis Unc.Ellipticity
(1 - b/a)
Eccentricity
[(a/b)2-1]/
[(a/b)2+1]
Position Angle
(deg)
[published]
Reference LevelFrequency (Hz)Major Axis
(2a)
(arcsec)
Major Axis Unc.Axis Ratio (b/a)Ellipticity
(1 - b/a)
Eccentricity
[(a/b)2-1]/
[(a/b)2+1]
cos-1(b/a)
(deg)
Position Angle
(deg)
[J2000]
1 0.5-7 keV Chandra
2020CSC...C2..0000:
3.39295680 arcsec 3.39295680 arcsec ... 0.00824715 ... ... 0.0
[J2000]
extent deconvolved with PSF 5.56E+17 3.39 0.01 3.39 -2.39 0.84 0 0
[J2000]
2 0.2-0.5 keV Chandra
2020CSC...C2..0000:
2.02090634 arcsec 2.02090634 arcsec ... 0.01088412 ... ... 0.0
[J2000]
extent deconvolved with PSF 9.67E+16 2.02 0.01 2.02 -1.02 0.61 0 0
[J2000]
3 0.5-1.2 keV Chandra
2020CSC...C2..0000:
3.55885841 arcsec 3.55885841 arcsec ... 0.01369890 ... ... 0.0
[J2000]
extent deconvolved with PSF 2.22E+17 3.56 0.01 3.56 -2.56 0.85 0 0
[J2000]
4 1.2-2 keV Chandra
2020CSC...C2..0000:
4.25680759 arcsec 4.25680759 arcsec ... 0.01742949 ... ... 0.0
[J2000]
extent deconvolved with PSF 3.77E+17 4.26 0.02 4.26 -3.26 0.90 0 0
[J2000]
5 2-7 keV Chandra
2020CSC...C2..0000:
4.74614126 arcsec 4.74614126 arcsec ... 0.21246372 ... ... 0.0
[J2000]
extent deconvolved with PSF 9.19E+17 4.75 0.21 4.75 -3.75 0.91 0 0
[J2000]
6 0.1-10 keV Chandra
2020CSC...C2..0000:
0.47732514 arcsec 0.47732514 arcsec ... 0.00504674 ... ... 0.0
[J2000]
extent deconvolved with PSF 3.63E+17 0.48 0.01 0.48 0.52 0.63 61 0
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2020CSC...C2..0000:
Published Object Name         :                               
Frequency Targeted            : 0.5-7 keV Chandra             
Major Axis (2a)               : 3.39295680 arcsec                   2a = 3.39 arcsec
Uncertainty                   : 0.00824715  arcsec                  0.01 arcsec              
Minor Axis (2b)               : 2b = 3.39295680 arcsec              2b = 3.39 arcsec 
Uncertainty                   : 0.00824715                                  0.01
Axis Ratio                    : ...                                 b/a = 3.39
Uncertainty                   : ...                                 0.01
Ellipticity                   : ...                                 1 - b/a = -2.39
Uncertainty                   : ...                                 0.01
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.84
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 0 deg
Position Angle [Equinox]      : 0.0    deg [J2000]                  0 deg [J2000]
Uncertainty                   : ...                                 ...
Significance                  : 68% confidence
Diameter Reference Level      : extent deconvolved with PSF   
Frequency                     : 2.3          keV                    5.56E+17 Hz
Frequency Mode                : Broad-band detector (e.g. photographic plate)

Measurement Mode               
    Detector Type             : Maps (e.g., 2MASS, VLA, Sloan)
    Fitting Technique         : Deconvolved from beam (Gaussian deconvolution)
    Measured Quantity         : Unspecified in paper
Coordinates Targeted          :
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 2020CSC...C2..0000: Published Object Name : Frequency Targeted : 0.2-0.5 keV Chandra Major Axis (2a) : 2.02090634 arcsec 2a = 2.02 arcsec Uncertainty : 0.01088412 arcsec 0.01 arcsec Minor Axis (2b) : 2b = 2.02090634 arcsec 2b = 2.02 arcsec Uncertainty : 0.01088412 0.01 Axis Ratio : ... b/a = 2.02 Uncertainty : ... 0.01 Ellipticity : ... 1 - b/a = -1.02 Uncertainty : ... 0.01 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.61 Uncertainty : ... ... Cos-1(b/a) : ... 0 deg Position Angle [Equinox] : 0.0 deg [J2000] 0 deg [J2000] Uncertainty : ... ... Significance : 68% confidence Diameter Reference Level : extent deconvolved with PSF Frequency : 0.4 keV 9.67E+16 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Deconvolved from beam (Gaussian deconvolution) Measured Quantity : Unspecified in paper Coordinates Targeted : Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2020CSC...C2..0000: Published Object Name : Frequency Targeted : 0.5-1.2 keV Chandra Major Axis (2a) : 3.55885841 arcsec 2a = 3.56 arcsec Uncertainty : 0.01369890 arcsec 0.01 arcsec Minor Axis (2b) : 2b = 3.55885841 arcsec 2b = 3.56 arcsec Uncertainty : 0.01369890 0.01 Axis Ratio : ... b/a = 3.56 Uncertainty : ... 0.01 Ellipticity : ... 1 - b/a = -2.56 Uncertainty : ... 0.01 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.85 Uncertainty : ... ... Cos-1(b/a) : ... 0 deg Position Angle [Equinox] : 0.0 deg [J2000] 0 deg [J2000] Uncertainty : ... ... Significance : 68% confidence Diameter Reference Level : extent deconvolved with PSF Frequency : 0.92 keV 2.22E+17 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Deconvolved from beam (Gaussian deconvolution) Measured Quantity : Unspecified in paper Coordinates Targeted : Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2020CSC...C2..0000: Published Object Name : Frequency Targeted : 1.2-2 keV Chandra Major Axis (2a) : 4.25680759 arcsec 2a = 4.26 arcsec Uncertainty : 0.01742949 arcsec 0.02 arcsec Minor Axis (2b) : 2b = 4.25680759 arcsec 2b = 4.26 arcsec Uncertainty : 0.01742949 0.02 Axis Ratio : ... b/a = 4.26 Uncertainty : ... 0.02 Ellipticity : ... 1 - b/a = -3.26 Uncertainty : ... 0.02 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.90 Uncertainty : ... ... Cos-1(b/a) : ... 0 deg Position Angle [Equinox] : 0.0 deg [J2000] 0 deg [J2000] Uncertainty : ... ... Significance : 68% confidence Diameter Reference Level : extent deconvolved with PSF Frequency : 1.56 keV 3.77E+17 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Deconvolved from beam (Gaussian deconvolution) Measured Quantity : Unspecified in paper Coordinates Targeted : Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2020CSC...C2..0000: Published Object Name : Frequency Targeted : 2-7 keV Chandra Major Axis (2a) : 4.74614126 arcsec 2a = 4.75 arcsec Uncertainty : 0.21246372 arcsec 0.21 arcsec Minor Axis (2b) : 2b = 4.74614126 arcsec 2b = 4.75 arcsec Uncertainty : 0.21246372 0.21 Axis Ratio : ... b/a = 4.75 Uncertainty : ... 0.21 Ellipticity : ... 1 - b/a = -3.75 Uncertainty : ... 0.21 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.91 Uncertainty : ... ... Cos-1(b/a) : ... 0 deg Position Angle [Equinox] : 0.0 deg [J2000] 0 deg [J2000] Uncertainty : ... ... Significance : 68% confidence Diameter Reference Level : extent deconvolved with PSF Frequency : 3.8 keV 9.19E+17 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Deconvolved from beam (Gaussian deconvolution) Measured Quantity : Unspecified in paper Coordinates Targeted : Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 2020CSC...C2..0000: Published Object Name : Frequency Targeted : 0.1-10 keV Chandra Major Axis (2a) : 0.47732514 arcsec 2a = 0.48 arcsec Uncertainty : 0.00504674 arcsec 0.01 arcsec Minor Axis (2b) : 2b = 0.47732514 arcsec 2b = 0.48 arcsec Uncertainty : 0.00504674 0.01 Axis Ratio : ... b/a = 0.48 Uncertainty : ... 0.01 Ellipticity : ... 1 - b/a = 0.52 Uncertainty : ... 0.01 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.63 Uncertainty : ... ... Cos-1(b/a) : ... 61 deg Position Angle [Equinox] : 0.0 deg [J2000] 0 deg [J2000] Uncertainty : ... ... Significance : 68% confidence Diameter Reference Level : extent deconvolved with PSF Frequency : 1.5 keV 3.63E+17 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Deconvolved from beam (Gaussian deconvolution) Measured Quantity : Unspecified in paper Coordinates Targeted : Qualifiers : From new, raw data NED Comment :

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