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Date and Time of the Query: 2022-01-20 T05:49:27 PST
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Diameter data point(s) for object SDSS J151813.71+264810.2

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 Petrosian)
2007SDSS6.C...0000:
0.52 (a) arcsec ... ... ... 0.306 ... ... ... ... 4.77E+14 1.04 0.61 ... ... ... ... ...
2 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
0.0755 (a) arcsec ... ... 0.077 (b/a) 0.329 ... ... 103.5
[J2000]
... 4.77E+14 0.15 0.66 0.08 0.92 0.99 86 104
[J2000]
3 r (SDSS Exponential)
2007SDSS6.C...0000:
0.1141 (a) arcsec ... ... 0.120 (b/a) 0.244 ... ... 104.7
[J2000]
... 4.77E+14 0.23 0.49 0.12 0.88 0.97 83 105
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2007SDSS6.C...0000:
Published Object Name         : SDSS J151813.71+264810.2      
Frequency Targeted            : r (SDSS Petrosian)            
Major Axis (2a)               : a = 0.52       arcsec               2a = 1.04 arcsec
Uncertainty                   :      0.306  arcsec                  0.61 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          : 229.5571655013  26.8028412506    (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 J151813.71+264810.2 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 0.0755 arcsec 2a = 0.15 arcsec Uncertainty : 0.329 arcsec 0.66 arcsec Minor Axis (2b) : ... 2b = 0.01 arcsec Uncertainty : ... 50.69 Axis Ratio : b/a = 0.077 b/a = 0.08 Uncertainty : 77.037 77.04 Ellipticity : ... 1 - b/a = 0.92 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.99 Uncertainty : ... ... Cos-1(b/a) : ... 86 deg Position Angle [Equinox] : 103.5 deg [J2000] 104 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 : 229.5571655013 26.8028412506 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J151813.71+264810.2 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 0.1141 arcsec 2a = 0.23 arcsec Uncertainty : 0.244 arcsec 0.49 arcsec Minor Axis (2b) : ... 2b = 0.03 arcsec Uncertainty : ... 51.19 Axis Ratio : b/a = 0.120 b/a = 0.12 Uncertainty : 104.687 104.69 Ellipticity : ... 1 - b/a = 0.88 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.97 Uncertainty : ... ... Cos-1(b/a) : ... 83 deg Position Angle [Equinox] : 104.7 deg [J2000] 105 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 : 229.5571655013 26.8028412506 (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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