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Date and Time of the Query: 2019-03-20 T06:38:17 PDT
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Diameter data point(s) for object IC 3759

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.......:
14.9 (a) arcsec ... ... 0.320 (b/a) ... ... ... -25
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 29.80 ... 0.32 0.68 0.81 71 155
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
25.8 (a) arcsec ... ... 0.320 (b/a) ... ... ... -25
[J2000]
Diameter for "total" magnitude 1.38E+14 51.60 ... 0.32 0.68 0.81 71 155
[J2000]
3 r (SDSS Isophotal)
2007SDSS6.C...0000:
25.38 (a) arcsec 7.11 arcsec ... ... ... ... 158.0
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 50.75 ... 0.28 0.72 0.85 74 158
[J2000]
4 r (SDSS Petrosian)
2007SDSS6.C...0000:
4.91 (a) arcsec ... ... ... 0.918 ... ... ... ... 4.77E+14 9.82 1.83 ... ... ... ... ...
5 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
7.5729 (a) arcsec ... ... 0.222 (b/a) 0.078 ... ... 153.4
[J2000]
... 4.77E+14 15.15 0.16 0.22 0.78 0.91 77 153
[J2000]
6 r (SDSS Exponential)
2007SDSS6.C...0000:
3.4915 (a) arcsec ... ... 0.206 (b/a) 0.021 ... ... 153.3
[J2000]
... 4.77E+14 6.98 0.04 0.21 0.79 0.92 78 153
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J12461777+2046594       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 14.9       arcsec               2a = 29.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 9.54 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.320                         b/a = 0.32
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.68
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.81
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 71 deg
Position Angle [Equinox]      :  -25   deg [J2000]                  155 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          : 191.574081      20.783146    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12461777+2046594 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 25.8 arcsec 2a = 51.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 16.51 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.320 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 deg Position Angle [Equinox] : -25 deg [J2000] 155 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 : 191.574081 20.783146 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124617.76+204658.8 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 25.38 arcsec 2a = 50.75 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 7.11 arcsec 2b = 14.22 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.28 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.72 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.85 Uncertainty : ... ... Cos-1(b/a) : ... 74 deg Position Angle [Equinox] : 158.0 deg [J2000] 158 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 : 191.5740395495 20.7830046892 (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 J124617.76+204658.8 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.91 arcsec 2a = 9.82 arcsec Uncertainty : 0.918 arcsec 1.83 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 : 191.5740395495 20.7830046892 (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 J124617.76+204658.8 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 7.5729 arcsec 2a = 15.15 arcsec Uncertainty : 0.078 arcsec 0.16 arcsec Minor Axis (2b) : ... 2b = 3.36 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.222 b/a = 0.22 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.78 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.91 Uncertainty : ... ... Cos-1(b/a) : ... 77 deg Position Angle [Equinox] : 153.4 deg [J2000] 153 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 : 191.5740395495 20.7830046892 (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 J124617.76+204658.8 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 3.4915 arcsec 2a = 6.98 arcsec Uncertainty : 0.021 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 1.44 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.206 b/a = 0.21 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.79 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.92 Uncertainty : ... ... Cos-1(b/a) : ... 78 deg Position Angle [Equinox] : 153.3 deg [J2000] 153 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 : 191.5740395495 20.7830046892 (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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