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Date and Time of the Query: 2019-05-24 T15:49:42 PDT
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Diameter data point(s) for object SDSS J125712.76+272726.7

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 r (SDSS Isophotal)
2007SDSS6.C...0000:
3.72 (a) arcsec 2.45 arcsec ... ... ... ... 16.9
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 7.44 ... 0.66 0.34 0.40 49 17
[J2000]
2 r (SDSS Petrosian)
2007SDSS6.C...0000:
1.99 (a) arcsec ... ... ... 0.176 ... ... ... ... 4.77E+14 3.97 0.35 ... ... ... ... ...
3 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.5811 (a) arcsec ... ... 0.550 (b/a) 1.053 ... ... 24.0
[J2000]
... 4.77E+14 5.16 2.11 0.55 0.45 0.54 57 24
[J2000]
4 r (SDSS Exponential)
2007SDSS6.C...0000:
1.0845 (a) arcsec ... ... 0.668 (b/a) 0.224 ... ... 19.4
[J2000]
... 4.77E+14 2.17 0.45 0.67 0.33 0.38 48 19
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2007SDSS6.C...0000:
Published Object Name         : SDSS J125712.76+272726.7      
Frequency Targeted            : r (SDSS Isophotal)            
Major Axis (2a)               : a = 3.72       arcsec               2a = 7.44 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : b =       2.45 arcsec               2b = 4.90 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.66
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.34
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.40
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 49 deg
Position Angle [Equinox]      :   16.9 deg [J2000]                  17 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          : 194.3031866123  27.4574395446    (J2000)
Qualifiers                    : From new, raw data; DIA_MAJ or DIA_MIN modified from
                               published data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J125712.76+272726.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 1.99 arcsec 2a = 3.97 arcsec Uncertainty : 0.176 arcsec 0.35 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 : 194.3031866123 27.4574395446 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J125712.76+272726.7 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.5811 arcsec 2a = 5.16 arcsec Uncertainty : 1.053 arcsec 2.11 arcsec Minor Axis (2b) : ... 2b = 2.84 arcsec Uncertainty : ... 0.53 Axis Ratio : b/a = 0.550 b/a = 0.55 Uncertainty : 0.253 0.25 Ellipticity : ... 1 - b/a = 0.45 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.54 Uncertainty : ... ... Cos-1(b/a) : ... 57 deg Position Angle [Equinox] : 24.0 deg [J2000] 24 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 : 194.3031866123 27.4574395446 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J125712.76+272726.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.0845 arcsec 2a = 2.17 arcsec Uncertainty : 0.224 arcsec 0.45 arcsec Minor Axis (2b) : ... 2b = 1.45 arcsec Uncertainty : ... 0.10 Axis Ratio : b/a = 0.668 b/a = 0.67 Uncertainty : 0.222 0.22 Ellipticity : ... 1 - b/a = 0.33 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.38 Uncertainty : ... ... Cos-1(b/a) : ... 48 deg Position Angle [Equinox] : 19.4 deg [J2000] 19 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 : 194.3031866123 27.4574395446 (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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