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Date and Time of the Query: 2019-04-22 T15:05:19 PDT
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Diameter data point(s) for object 2MASX J08194351+2102121

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 K_s (2MASS isophotal)
20032MASX.C.......:
14.4 (a) arcsec ... ... 0.660 (b/a) ... ... ... -65
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 28.80 ... 0.66 0.34 0.39 49 115
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
35.7 (a) arcsec ... ... 0.660 (b/a) ... ... ... -65
[J2000]
Diameter for "total" magnitude 1.38E+14 71.40 ... 0.66 0.34 0.39 49 115
[J2000]
3 r (SDSS Isophotal)
2007SDSS6.C...0000:
21.94 (a) arcsec 15.44 arcsec ... ... ... ... 100.0
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 43.88 ... 0.70 0.30 0.34 45 100
[J2000]
4 r (SDSS Petrosian)
2007SDSS6.C...0000:
5.41 (a) arcsec ... ... ... 0.117 ... ... ... ... 4.77E+14 10.81 0.23 ... ... ... ... ...
5 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.6547 (a) arcsec ... ... 0.772 (b/a) 0.025 ... ... 97.2
[J2000]
... 4.77E+14 5.31 0.05 0.77 0.23 0.25 39 97
[J2000]
6 r (SDSS Exponential)
2007SDSS6.C...0000:
1.4599 (a) arcsec ... ... 0.775 (b/a) 0.009 ... ... 97.5
[J2000]
... 4.77E+14 2.92 0.02 0.78 0.22 0.25 39 98
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J08194351+2102121       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 14.4       arcsec               2a = 28.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 19.01 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.660                         b/a = 0.66
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.34
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.39
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 49 deg
Position Angle [Equinox]      :  -65   deg [J2000]                  115 deg [J2000]
Uncertainty                   : ...                                 ...
Significance                  : No uncertainty reported
Diameter Reference Level      : 20.0 K-mag arcsec^-2^         
Frequency                     : 2.17         microns                1.38E+14 Hz
Frequency Mode                : Broad-band detector (e.g. photographic plate)

Measurement Mode               
    Detector Type             : Maps (e.g., 2MASS, VLA, Sloan)
    Fitting Technique         : Ellipse fitting to image
    Measured Quantity         : Isophotal diameter
    Qualifiers                : A radius is given in DIA_MAJ, not a diameter
Coordinates Targeted          : 124.931282      21.036755    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J08194351+2102121 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 35.7 arcsec 2a = 71.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 47.12 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.660 b/a = 0.66 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.34 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.39 Uncertainty : ... ... Cos-1(b/a) : ... 49 deg Position Angle [Equinox] : -65 deg [J2000] 115 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Diameter for "total" magnitude Frequency : 2.17 microns 1.38E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Ellipse fitting to image Measured Quantity : Isophotal diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 124.931282 21.036755 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J081943.49+210212.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 21.94 arcsec 2a = 43.88 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 15.44 arcsec 2b = 30.88 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 45 deg Position Angle [Equinox] : 100.0 deg [J2000] 100 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 25.0 mag arcsec^-2^ Frequency : 6290 A 4.77E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Ellipse fitting to image Measured Quantity : Isophotal diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 124.9312432700 21.0367813254 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J081943.49+210212.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.41 arcsec 2a = 10.81 arcsec Uncertainty : 0.117 arcsec 0.23 arcsec Minor Axis (2b) : ... ... Uncertainty : ... ... Axis Ratio : ... ... Uncertainty : ... ... Ellipticity : ... ... Uncertainty : ... ... Eccentricity : ... ... Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Profile fitting to image Measured Quantity : See comments Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 124.9312432700 21.0367813254 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J081943.49+210212.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.6547 arcsec 2a = 5.31 arcsec Uncertainty : 0.025 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 4.10 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.772 b/a = 0.77 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.23 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.25 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : 97.2 deg [J2000] 97 deg [J2000] Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Ellipse fitting to image Measured Quantity : Half-light ("effective") diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 124.9312432700 21.0367813254 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 6 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J081943.49+210212.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.4599 arcsec 2a = 2.92 arcsec Uncertainty : 0.009 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.26 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.775 b/a = 0.78 Uncertainty : 0.006 0.01 Ellipticity : ... 1 - b/a = 0.22 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.25 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : 97.5 deg [J2000] 98 deg [J2000] Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Ellipse fitting to image Measured Quantity : Half-light ("effective") diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 124.9312432700 21.0367813254 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius

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