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Date and Time of the Query: 2019-05-21 T13:49:55 PDT
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Diameter data point(s) for object SDSS J125712.27+272313.0

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:
5.58 (a) arcsec 3.82 arcsec ... ... ... ... 58.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 11.15 ... 0.69 0.31 0.36 47 58
[J2000]
2 r (SDSS Petrosian)
2007SDSS6.C...0000:
2.87 (a) arcsec ... ... ... 0.261 ... ... ... ... 4.77E+14 5.75 0.52 ... ... ... ... ...
3 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
6.0794 (a) arcsec ... ... 0.604 (b/a) 0.784 ... ... 49.2
[J2000]
... 4.77E+14 12.16 1.57 0.60 0.40 0.47 53 49
[J2000]
4 r (SDSS Exponential)
2007SDSS6.C...0000:
1.6960 (a) arcsec ... ... 0.679 (b/a) 0.121 ... ... 51.7
[J2000]
... 4.77E+14 3.39 0.24 0.68 0.32 0.37 47 52
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2007SDSS6.C...0000:
Published Object Name         : SDSS J125712.27+272313.0      
Frequency Targeted            : r (SDSS Isophotal)            
Major Axis (2a)               : a = 5.58       arcsec               2a = 11.15 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : b =       3.82 arcsec               2b = 7.63 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.69
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.31
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.36
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 47 deg
Position Angle [Equinox]      :   58.1 deg [J2000]                  58 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          : 194.3011473737  27.3869585181    (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 J125712.27+272313.0 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 2.87 arcsec 2a = 5.75 arcsec Uncertainty : 0.261 arcsec 0.52 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 : 194.3011473737 27.3869585181 (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 J125712.27+272313.0 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 6.0794 arcsec 2a = 12.16 arcsec Uncertainty : 0.784 arcsec 1.57 arcsec Minor Axis (2b) : ... 2b = 7.34 arcsec Uncertainty : ... 0.13 Axis Ratio : b/a = 0.604 b/a = 0.60 Uncertainty : 0.083 0.08 Ellipticity : ... 1 - b/a = 0.40 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.47 Uncertainty : ... ... Cos-1(b/a) : ... 53 deg Position Angle [Equinox] : 49.2 deg [J2000] 49 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 : 194.3011473737 27.3869585181 (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 J125712.27+272313.0 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.6960 arcsec 2a = 3.39 arcsec Uncertainty : 0.121 arcsec 0.24 arcsec Minor Axis (2b) : ... 2b = 2.30 arcsec Uncertainty : ... 0.02 Axis Ratio : b/a = 0.679 b/a = 0.68 Uncertainty : 0.073 0.07 Ellipticity : ... 1 - b/a = 0.32 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.37 Uncertainty : ... ... Cos-1(b/a) : ... 47 deg Position Angle [Equinox] : 51.7 deg [J2000] 52 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 : 194.3011473737 27.3869585181 (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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