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Date and Time of the Query: 2019-06-26 T04:12:40 PDT
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Diameter data point(s) for object IC 3447

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.......:
7.3 (a) arcsec ... ... 0.760 (b/a) ... ... ... -45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 14.60 ... 0.76 0.24 0.27 41 135
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
17.5 (a) arcsec ... ... 0.760 (b/a) ... ... ... -45
[J2000]
Diameter for "total" magnitude 1.38E+14 35.10 ... 0.76 0.24 0.27 41 135
[J2000]
3 r (SDSS Isophotal)
2004SDSS3.C...0000:
13.17 (a) arcsec 12.00 arcsec ... ... ... ... 21.6
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 26.34 ... 0.91 0.09 0.09 24 22
[J2000]
4 r (SDSS Petrosian)
2004SDSS3.C...0000:
4.58 (a) arcsec ... ... ... 0.05 ... ... ... ... 4.77E+14 9.17 0.10 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
3.80 (a) arcsec ... ... 0.820 (b/a) 0.08 ... ... 139.8
[J2000]
... 4.77E+14 7.61 0.17 0.82 0.18 0.20 35 140
[J2000]
6 r (SDSS Exponential)
2004SDSS3.C...0000:
1.85 (a) arcsec ... ... 0.840 (b/a) 0.02 ... ... 136.9
[J2000]
... 4.77E+14 3.70 0.04 0.84 0.16 0.17 33 137
[J2000]
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
13.17 (a) arcsec 12.00 arcsec ... ... ... ... 21.6
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 26.34 ... 0.91 0.09 0.09 24 22
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
4.58 (a) arcsec ... ... ... 0.052 ... ... ... ... 4.77E+14 9.17 0.10 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
3.8034 (a) arcsec ... ... 0.820 (b/a) 0.083 ... ... 139.8
[J2000]
... 4.77E+14 7.61 0.17 0.82 0.18 0.20 35 140
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
1.8515 (a) arcsec ... ... 0.840 (b/a) 0.019 ... ... 136.9
[J2000]
... 4.77E+14 3.70 0.04 0.84 0.16 0.17 33 137
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J12311792+1040481       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 7.3        arcsec               2a = 14.60 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 11.10 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.760                         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)                    : ...                                 41 deg
Position Angle [Equinox]      :  -45   deg [J2000]                  135 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          : 187.824615      10.680092    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12311792+1040481 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 17.5 arcsec 2a = 35.10 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 26.68 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.760 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) : ... 41 deg Position Angle [Equinox] : -45 deg [J2000] 135 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 : 187.824615 10.680092 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J123117.90+104048.6 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 13.17 arcsec 2a = 26.34 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 12.00 arcsec 2b = 24.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.91 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.09 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.09 Uncertainty : ... ... Cos-1(b/a) : ... 24 deg Position Angle [Equinox] : 21.6 deg [J2000] 22 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 : 187.8246002 10.6801643 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J123117.90+104048.6 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.58 arcsec 2a = 9.17 arcsec Uncertainty : 0.05 arcsec 0.10 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 : 187.8246002 10.6801643 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J123117.90+104048.6 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 3.80 arcsec 2a = 7.61 arcsec Uncertainty : 0.08 arcsec 0.17 arcsec Minor Axis (2b) : ... 2b = 6.24 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.820 b/a = 0.82 Uncertainty : 0.013 0.01 Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.20 Uncertainty : ... ... Cos-1(b/a) : ... 35 deg Position Angle [Equinox] : 139.8 deg [J2000] 140 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 : 187.8246002 10.6801643 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J123117.90+104048.6 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.85 arcsec 2a = 3.70 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.11 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.840 b/a = 0.84 Uncertainty : 0.011 0.01 Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.17 Uncertainty : ... ... Cos-1(b/a) : ... 33 deg Position Angle [Equinox] : 136.9 deg [J2000] 137 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 : 187.8246002 10.6801643 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J123117.90+104048.5 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 13.17 arcsec 2a = 26.34 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 12.00 arcsec 2b = 24.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.91 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.09 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.09 Uncertainty : ... ... Cos-1(b/a) : ... 24 deg Position Angle [Equinox] : 21.6 deg [J2000] 22 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 : 187.8246027630 10.6801643973 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J123117.90+104048.5 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.58 arcsec 2a = 9.17 arcsec Uncertainty : 0.052 arcsec 0.10 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 : 187.8246027630 10.6801643973 (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 J123117.90+104048.5 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 3.8034 arcsec 2a = 7.61 arcsec Uncertainty : 0.083 arcsec 0.17 arcsec Minor Axis (2b) : ... 2b = 6.24 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.820 b/a = 0.82 Uncertainty : 0.013 0.01 Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.20 Uncertainty : ... ... Cos-1(b/a) : ... 35 deg Position Angle [Equinox] : 139.8 deg [J2000] 140 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 : 187.8246027630 10.6801643973 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 10 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J123117.90+104048.5 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.8515 arcsec 2a = 3.70 arcsec Uncertainty : 0.019 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.11 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.840 b/a = 0.84 Uncertainty : 0.011 0.01 Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.17 Uncertainty : ... ... Cos-1(b/a) : ... 33 deg Position Angle [Equinox] : 136.9 deg [J2000] 137 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 : 187.8246027630 10.6801643973 (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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