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Date and Time of the Query: 2019-04-24 T07:24:33 PDT
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Diameter data point(s) for object 2MASX J08173161+2100300

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.......:
5.5 (a) arcsec ... ... 1.000 (b/a) ... ... ... 90
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 11.00 ... 1.00 0.00 0.00 0 90
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
8.2 (a) arcsec ... ... 1.000 (b/a) ... ... ... 90
[J2000]
Diameter for "total" magnitude 1.38E+14 16.50 ... 1.00 0.00 0.00 0 90
[J2000]
3 r (SDSS Isophotal)
2007SDSS6.C...0000:
10.35 (a) arcsec 6.69 arcsec ... ... ... ... 170.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 20.70 ... 0.65 0.35 0.41 50 170
[J2000]
4 r (SDSS Petrosian)
2007SDSS6.C...0000:
2.84 (a) arcsec ... ... ... 0.153 ... ... ... ... 4.77E+14 5.69 0.30 ... ... ... ... ...
5 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
1.2494 (a) arcsec ... ... 0.899 (b/a) 0.046 ... ... 173.4
[J2000]
... 4.77E+14 2.50 0.09 0.90 0.10 0.11 26 173
[J2000]
6 r (SDSS Exponential)
2007SDSS6.C...0000:
0.6182 (a) arcsec ... ... 0.945 (b/a) 0.011 ... ... 5.7
[J2000]
... 4.77E+14 1.24 0.02 0.94 0.06 0.06 19 6
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J08173161+2100300       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 5.5        arcsec               2a = 11.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 11.00 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 1.000                         b/a = 1.00
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.00
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.00
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 0 deg
Position Angle [Equinox]      :   90   deg [J2000]                  90 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          : 124.381737      21.008337    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J08173161+2100300 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 8.2 arcsec 2a = 16.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 16.50 arcsec Uncertainty : ... ... Axis Ratio : b/a = 1.000 b/a = 1.00 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.00 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.00 Uncertainty : ... ... Cos-1(b/a) : ... 0 deg Position Angle [Equinox] : 90 deg [J2000] 90 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 : 124.381737 21.008337 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J081731.64+210030.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 10.35 arcsec 2a = 20.70 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 6.69 arcsec 2b = 13.38 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.65 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.35 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.41 Uncertainty : ... ... Cos-1(b/a) : ... 50 deg Position Angle [Equinox] : 170.1 deg [J2000] 170 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 : 124.3818526146 21.0084599765 (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 J081731.64+210030.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 2.84 arcsec 2a = 5.69 arcsec Uncertainty : 0.153 arcsec 0.30 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 : 124.3818526146 21.0084599765 (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 J081731.64+210030.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 1.2494 arcsec 2a = 2.50 arcsec Uncertainty : 0.046 arcsec 0.09 arcsec Minor Axis (2b) : ... 2b = 2.25 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.899 b/a = 0.90 Uncertainty : 0.026 0.03 Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.11 Uncertainty : ... ... Cos-1(b/a) : ... 26 deg Position Angle [Equinox] : 173.4 deg [J2000] 173 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 : 124.3818526146 21.0084599765 (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 J081731.64+210030.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 0.6182 arcsec 2a = 1.24 arcsec Uncertainty : 0.011 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 1.17 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.945 b/a = 0.94 Uncertainty : 0.023 0.02 Ellipticity : ... 1 - b/a = 0.06 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.06 Uncertainty : ... ... Cos-1(b/a) : ... 19 deg Position Angle [Equinox] : 5.7 deg [J2000] 6 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 : 124.3818526146 21.0084599765 (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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