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Date and Time of the Query: 2019-05-20 T15:41:40 PDT
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Diameter data point(s) for object IC 0521

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 K_s (2MASS isophotal)
20032MASX.C.......:
24.6 (a) arcsec ... ... 0.520 (b/a) ... ... ... 85
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 49.20 ... 0.52 0.48 0.57 59 85
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
40.7 (a) arcsec ... ... 0.520 (b/a) ... ... ... 85
[J2000]
Diameter for "total" magnitude 1.38E+14 81.40 ... 0.52 0.48 0.57 59 85
[J2000]
3 POSS1 103a-O
1963MCG3..C...0000V
0.20 arcmin 0.20 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 12.00 ... 1.00 0.00 0.00 0 ...
4 r (SDSS Isophotal)
2004SDSS2.C...0000:
32.36 (a) arcsec 23.55 arcsec ... ... ... ... 70.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 64.72 ... 0.73 0.27 0.31 43 70
[J2000]
5 r (SDSS Petrosian)
2004SDSS2.C...0000:
2.80 (a) arcsec ... ... ... 0.17 ... ... ... ... 4.77E+14 5.60 0.34 ... ... ... ... ...
6 r (SDSS de Vaucouleurs)
2004SDSS2.C...0000:
2.23 (a) arcsec ... ... 0.605 (b/a) 0.01 ... ... 79.1
[J2000]
... 4.77E+14 4.47 0.02 0.60 0.40 0.46 53 79
[J2000]
7 r (SDSS Exponential)
2004SDSS2.C...0000:
1.27 (a) arcsec ... ... 0.664 (b/a) 0.01 ... ... 77.0
[J2000]
... 4.77E+14 2.55 0.01 0.66 0.34 0.39 48 77
[J2000]
8 r (SDSS Isophotal)
2007SDSS6.C...0000:
32.36 (a) arcsec 23.55 arcsec ... ... ... ... 70.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 64.72 ... 0.73 0.27 0.31 43 70
[J2000]
9 r (SDSS Petrosian)
2007SDSS6.C...0000:
2.80 (a) arcsec ... ... ... 0.169 ... ... ... ... 4.77E+14 5.60 0.34 ... ... ... ... ...
10 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.2345 (a) arcsec ... ... 0.605 (b/a) 0.011 ... ... 79.1
[J2000]
... 4.77E+14 4.47 0.02 0.60 0.40 0.46 53 79
[J2000]
11 r (SDSS Exponential)
2007SDSS6.C...0000:
1.2746 (a) arcsec ... ... 0.664 (b/a) 0.005 ... ... 77.0
[J2000]
... 4.77E+14 2.55 0.01 0.66 0.34 0.39 48 77
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J08464397+0232144       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 24.6       arcsec               2a = 49.20 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 25.58 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.520                         b/a = 0.52
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.48
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.57
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 59 deg
Position Angle [Equinox]      :   85   deg [J2000]                  85 deg [J2000]
Uncertainty                   : ...                                 ...
Significance                  : No uncertainty reported
Diameter Reference Level      : 20.0 K-mag arcsec^-2^         
Frequency                     : 2.17         microns                1.38E+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          : 131.683197      2.537413    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J08464397+0232144 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 40.7 arcsec 2a = 81.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 42.33 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.520 b/a = 0.52 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.48 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.57 Uncertainty : ... ... Cos-1(b/a) : ... 59 deg Position Angle [Equinox] : 85 deg [J2000] 85 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Diameter for "total" magnitude Frequency : 2.17 microns 1.38E+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 : 131.683197 2.537413 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +01-23-002 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.20 arcmin 2a = 12.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.20 arcmin 2b = 12.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 1.00 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.00 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.00 Uncertainty : ... ... Cos-1(b/a) : ... 0 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Very high surface brightness Frequency : 4050 A 7.40E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Photographic plate, print, or film Fitting Technique : Eye estimate Measured Quantity : "Inner" diameter Coordinates Targeted : 084400 +0243 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 32.36 arcsec 2a = 64.72 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 23.55 arcsec 2b = 47.10 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.73 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.27 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.31 Uncertainty : ... ... Cos-1(b/a) : ... 43 deg Position Angle [Equinox] : 70.1 deg [J2000] 70 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 : 131.6831818 2.5374205 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 2.80 arcsec 2a = 5.60 arcsec Uncertainty : 0.17 arcsec 0.34 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 : 131.6831818 2.5374205 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 2.23 arcsec 2a = 4.47 arcsec Uncertainty : 0.01 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.70 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.605 b/a = 0.60 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.40 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.46 Uncertainty : ... ... Cos-1(b/a) : ... 53 deg Position Angle [Equinox] : 79.1 deg [J2000] 79 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 : 131.6831818 2.5374205 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 7 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.27 arcsec 2a = 2.55 arcsec Uncertainty : 0.01 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.69 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.664 b/a = 0.66 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.34 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.39 Uncertainty : ... ... Cos-1(b/a) : ... 48 deg Position Angle [Equinox] : 77.0 deg [J2000] 77 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 : 131.6831818 2.5374205 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 32.36 arcsec 2a = 64.72 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 23.55 arcsec 2b = 47.10 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.73 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.27 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.31 Uncertainty : ... ... Cos-1(b/a) : ... 43 deg Position Angle [Equinox] : 70.1 deg [J2000] 70 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 : 131.6831775024 2.5374204425 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 9 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 2.80 arcsec 2a = 5.60 arcsec Uncertainty : 0.169 arcsec 0.34 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 : 131.6831775024 2.5374204425 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 10 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.2345 arcsec 2a = 4.47 arcsec Uncertainty : 0.011 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.70 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.605 b/a = 0.60 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.40 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.46 Uncertainty : ... ... Cos-1(b/a) : ... 53 deg Position Angle [Equinox] : 79.1 deg [J2000] 79 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 : 131.6831775024 2.5374204425 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 11 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084643.96+023214.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.2746 arcsec 2a = 2.55 arcsec Uncertainty : 0.005 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.69 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.664 b/a = 0.66 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.34 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.39 Uncertainty : ... ... Cos-1(b/a) : ... 48 deg Position Angle [Equinox] : 77.0 deg [J2000] 77 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 : 131.6831775024 2.5374204425 (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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