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Date and Time of the Query: 2019-06-16 T14:20:31 PDT
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Diameter data point(s) for object IC 3724

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.......:
7.2 (a) arcsec ... ... 0.960 (b/a) ... ... ... 15
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 14.40 ... 0.96 0.04 0.04 16 15
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
12.7 (a) arcsec ... ... 0.960 (b/a) ... ... ... 15
[J2000]
Diameter for "total" magnitude 1.38E+14 25.30 ... 0.96 0.04 0.04 16 15
[J2000]
3 r (SDSS Isophotal)
2007SDSS6.C...0000:
18.81 (a) arcsec 14.31 arcsec ... ... ... ... 45.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 37.61 ... 0.76 0.24 0.27 40 46
[J2000]
4 r (SDSS Petrosian)
2007SDSS6.C...0000:
6.12 (a) arcsec ... ... ... 0.179 ... ... ... ... 4.77E+14 12.24 0.36 ... ... ... ... ...
5 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
9.4326 (a) arcsec ... ... 0.901 (b/a) 0.131 ... ... 92.1
[J2000]
... 4.77E+14 18.86 0.26 0.90 0.10 0.10 26 92
[J2000]
6 r (SDSS Exponential)
2007SDSS6.C...0000:
2.9442 (a) arcsec ... ... 0.972 (b/a) 0.025 ... ... 62.8
[J2000]
... 4.77E+14 5.89 0.05 0.97 0.03 0.03 14 63
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J12445373+1016570       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 7.2        arcsec               2a = 14.40 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 13.82 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.960                         b/a = 0.96
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.04
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.04
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 16 deg
Position Angle [Equinox]      :   15   deg [J2000]                  15 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          : 191.223877      10.282405    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12445373+1016570 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 12.7 arcsec 2a = 25.30 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 24.29 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.960 b/a = 0.96 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.04 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.04 Uncertainty : ... ... Cos-1(b/a) : ... 16 deg Position Angle [Equinox] : 15 deg [J2000] 15 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 : 191.223877 10.282405 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124453.76+101656.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 18.81 arcsec 2a = 37.61 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.31 arcsec 2b = 28.61 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.76 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.24 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.27 Uncertainty : ... ... Cos-1(b/a) : ... 40 deg Position Angle [Equinox] : 45.5 deg [J2000] 46 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 : 191.2240073282 10.2823544558 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124453.76+101656.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 6.12 arcsec 2a = 12.24 arcsec Uncertainty : 0.179 arcsec 0.36 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 : 191.2240073282 10.2823544558 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J124453.76+101656.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 9.4326 arcsec 2a = 18.86 arcsec Uncertainty : 0.131 arcsec 0.26 arcsec Minor Axis (2b) : ... 2b = 17.00 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.901 b/a = 0.90 Uncertainty : 0.012 0.01 Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.10 Uncertainty : ... ... Cos-1(b/a) : ... 26 deg Position Angle [Equinox] : 92.1 deg [J2000] 92 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 : 191.2240073282 10.2823544558 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 6 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124453.76+101656.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.9442 arcsec 2a = 5.89 arcsec Uncertainty : 0.025 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 5.72 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.972 b/a = 0.97 Uncertainty : 0.010 0.01 Ellipticity : ... 1 - b/a = 0.03 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.03 Uncertainty : ... ... Cos-1(b/a) : ... 14 deg Position Angle [Equinox] : 62.8 deg [J2000] 63 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 : 191.2240073282 10.2823544558 (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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