NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-15 T14:44:42 PDT
Help | Comment | NED Home

Diameter data point(s) for object SDSS J020618.75-001811.2

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 Isophotal)
2007SDSS6.C...0000:
1.95 (a) arcsec 1.32 arcsec ... ... ... ... 109.7
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 3.91 ... 0.68 0.32 0.37 47 110
[J2000]
2 r (SDSS Petrosian)
2007SDSS6.C...0000:
0.90 (a) arcsec ... ... ... 0.141 ... ... ... ... 4.77E+14 1.80 0.28 ... ... ... ... ...
3 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
0.5422 (a) arcsec ... ... 0.790 (b/a) 0.351 ... ... 111.8
[J2000]
... 4.77E+14 1.08 0.70 0.79 0.21 0.23 38 112
[J2000]
4 r (SDSS Exponential)
2007SDSS6.C...0000:
0.3454 (a) arcsec ... ... 0.845 (b/a) 0.187 ... ... 102.7
[J2000]
... 4.77E+14 0.69 0.38 0.84 0.16 0.17 32 103
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2007SDSS6.C...0000:
Published Object Name         : SDSS J020618.75-001811.2      
Frequency Targeted            : r (SDSS Isophotal)            
Major Axis (2a)               : a = 1.95       arcsec               2a = 3.91 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : b =       1.32 arcsec               2b = 2.65 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.68
Uncertainty                   : ...                                 ...
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]      :  109.7 deg [J2000]                  110 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          : 31.5781655122   -0.3031134899    (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 J020618.75-001811.2 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 0.90 arcsec 2a = 1.80 arcsec Uncertainty : 0.141 arcsec 0.28 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 : 31.5781655122 -0.3031134899 (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 J020618.75-001811.2 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 0.5422 arcsec 2a = 1.08 arcsec Uncertainty : 0.351 arcsec 0.70 arcsec Minor Axis (2b) : ... 2b = 0.86 arcsec Uncertainty : ... 0.43 Axis Ratio : b/a = 0.790 b/a = 0.79 Uncertainty : 0.613 0.61 Ellipticity : ... 1 - b/a = 0.21 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.23 Uncertainty : ... ... Cos-1(b/a) : ... 38 deg Position Angle [Equinox] : 111.8 deg [J2000] 112 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 : 31.5781655122 -0.3031134899 (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 J020618.75-001811.2 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 0.3454 arcsec 2a = 0.69 arcsec Uncertainty : 0.187 arcsec 0.38 arcsec Minor Axis (2b) : ... 2b = 0.58 arcsec Uncertainty : ... 0.21 Axis Ratio : b/a = 0.845 b/a = 0.84 Uncertainty : 0.561 0.56 Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.17 Uncertainty : ... ... Cos-1(b/a) : ... 32 deg Position Angle [Equinox] : 102.7 deg [J2000] 103 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 : 31.5781655122 -0.3031134899 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius

Back to NED Home