NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-20 T18:40:48 PST
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Diameter data point(s) for object 2MASS J10180899-4618345

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:
4.04702737 arcsec 4.04702737 arcsec ... 0.86667340 ... ... 0.0
[J2000]
extent deconvolved with PSF 5.56E+17 4.05 0.87 4.05 -3.05 0.88 0 0
[J2000]
2 0.2-0.5 keV Chandra
2020CSC...C2..0000:
8.74790521 arcsec 8.74790521 arcsec ... 2.63977750 ... ... 0.0
[J2000]
extent deconvolved with PSF 9.67E+16 8.75 2.64 8.75 -7.75 0.97 0 0
[J2000]
3 0.5-1.2 keV Chandra
2020CSC...C2..0000:
3.64647838 arcsec 3.64647838 arcsec ... 1.45331129 ... ... 0.0
[J2000]
extent deconvolved with PSF 2.22E+17 3.65 1.45 3.65 -2.65 0.86 0 0
[J2000]
4 1.2-2 keV Chandra
2020CSC...C2..0000:
4.19589164 arcsec 4.19589164 arcsec ... 1.23255054 ... ... 0.0
[J2000]
extent deconvolved with PSF 3.77E+17 4.20 1.23 4.20 -3.20 0.89 0 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)               : 4.04702737 arcsec                   2a = 4.05 arcsec
Uncertainty                   : 0.86667340  arcsec                  0.87 arcsec              
Minor Axis (2b)               : 2b = 4.04702737 arcsec              2b = 4.05 arcsec 
Uncertainty                   : 0.86667340                                  0.87
Axis Ratio                    : ...                                 b/a = 4.05
Uncertainty                   : ...                                 0.87
Ellipticity                   : ...                                 1 - b/a = -3.05
Uncertainty                   : ...                                 0.87
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.88
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) : 8.74790521 arcsec 2a = 8.75 arcsec Uncertainty : 2.63977750 arcsec 2.64 arcsec Minor Axis (2b) : 2b = 8.74790521 arcsec 2b = 8.75 arcsec Uncertainty : 2.63977750 2.64 Axis Ratio : ... b/a = 8.75 Uncertainty : ... 2.64 Ellipticity : ... 1 - b/a = -7.75 Uncertainty : ... 2.64 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.97 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) : 3.64647838 arcsec 2a = 3.65 arcsec Uncertainty : 1.45331129 arcsec 1.45 arcsec Minor Axis (2b) : 2b = 3.64647838 arcsec 2b = 3.65 arcsec Uncertainty : 1.45331129 1.45 Axis Ratio : ... b/a = 3.65 Uncertainty : ... 1.45 Ellipticity : ... 1 - b/a = -2.65 Uncertainty : ... 1.45 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.86 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) : 4.19589164 arcsec 2a = 4.20 arcsec Uncertainty : 1.23255054 arcsec 1.23 arcsec Minor Axis (2b) : 2b = 4.19589164 arcsec 2b = 4.20 arcsec Uncertainty : 1.23255054 1.23 Axis Ratio : ... b/a = 4.20 Uncertainty : ... 1.23 Ellipticity : ... 1 - b/a = -3.20 Uncertainty : ... 1.23 Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.89 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 :

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