NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-23 T22:19:19 PDT
Help | Comment | NED Home

Diameter data point(s) for object 4C +38.27

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:
3.46 (a) arcsec 2.78 arcsec ... ... ... ... 29.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 6.92 ... 0.80 0.20 0.21 36 30
[J2000]
2 r (SDSS Petrosian)
2007SDSS6.C...0000:
1.42 (a) arcsec ... ... ... 0.189 ... ... ... ... 4.77E+14 2.84 0.38 ... ... ... ... ...
3 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
0.9716 (a) arcsec ... ... 0.583 (b/a) 0.175 ... ... 176.9
[J2000]
... 4.77E+14 1.94 0.35 0.58 0.42 0.49 54 177
[J2000]
4 r (SDSS Exponential)
2007SDSS6.C...0000:
0.5714 (a) arcsec ... ... 0.606 (b/a) 0.042 ... ... 178.2
[J2000]
... 4.77E+14 1.14 0.08 0.61 0.39 0.46 53 178
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2007SDSS6.C...0000:
Published Object Name         : SDSS J091148.50+375018.5      
Frequency Targeted            : r (SDSS Isophotal)            
Major Axis (2a)               : a = 3.46       arcsec               2a = 6.92 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : b =       2.78 arcsec               2b = 5.56 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.80
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.20
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.21
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 36 deg
Position Angle [Equinox]      :   29.8 deg [J2000]                  30 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          : 137.9520987197  37.8384757335    (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 J091148.50+375018.5 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 1.42 arcsec 2a = 2.84 arcsec Uncertainty : 0.189 arcsec 0.38 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 : 137.9520987197 37.8384757335 (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 J091148.50+375018.5 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 0.9716 arcsec 2a = 1.94 arcsec Uncertainty : 0.175 arcsec 0.35 arcsec Minor Axis (2b) : ... 2b = 1.13 arcsec Uncertainty : ... 0.04 Axis Ratio : b/a = 0.583 b/a = 0.58 Uncertainty : 0.102 0.10 Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.49 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : 176.9 deg [J2000] 177 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 : 137.9520987197 37.8384757335 (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 J091148.50+375018.5 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 0.5714 arcsec 2a = 1.14 arcsec Uncertainty : 0.042 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 0.69 arcsec Uncertainty : ... 0.01 Axis Ratio : b/a = 0.606 b/a = 0.61 Uncertainty : 0.079 0.08 Ellipticity : ... 1 - b/a = 0.39 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.46 Uncertainty : ... ... Cos-1(b/a) : ... 53 deg Position Angle [Equinox] : 178.2 deg [J2000] 178 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 : 137.9520987197 37.8384757335 (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