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Date and Time of the Query: 2019-04-20 T23:52:13 PDT
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Diameter data point(s) for object IC 2639

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.......:
8.0 (a) arcsec ... ... 0.980 (b/a) ... ... ... -55
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 16.00 ... 0.98 0.02 0.02 11 125
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
16.5 (a) arcsec ... ... 0.980 (b/a) ... ... ... -55
[J2000]
Diameter for "total" magnitude 1.38E+14 32.90 ... 0.98 0.02 0.02 11 125
[J2000]
3 r (SDSS Isophotal)
2004SDSS3.C...0000:
18.62 (a) arcsec 17.01 arcsec ... ... ... ... 103.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 37.23 ... 0.91 0.09 0.09 24 104
[J2000]
4 r (SDSS Petrosian)
2004SDSS3.C...0000:
4.19 (a) arcsec ... ... ... 0.05 ... ... ... ... 4.77E+14 8.39 0.10 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
1.90 (a) arcsec ... ... 0.954 (b/a) 0.02 ... ... 84.8
[J2000]
... 4.77E+14 3.79 0.04 0.95 0.05 0.05 17 85
[J2000]
6 r (SDSS Exponential)
2004SDSS3.C...0000:
1.20 (a) arcsec ... ... 0.944 (b/a) 0.01 ... ... 76.2
[J2000]
... 4.77E+14 2.41 0.01 0.94 0.06 0.06 19 76
[J2000]
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
18.62 (a) arcsec 17.01 arcsec ... ... ... ... 103.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 37.23 ... 0.91 0.09 0.09 24 104
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
4.19 (a) arcsec ... ... ... 0.048 ... ... ... ... 4.77E+14 8.39 0.10 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
1.8954 (a) arcsec ... ... 0.954 (b/a) 0.021 ... ... 84.8
[J2000]
... 4.77E+14 3.79 0.04 0.95 0.05 0.05 17 85
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
1.2025 (a) arcsec ... ... 0.944 (b/a) 0.007 ... ... 76.2
[J2000]
... 4.77E+14 2.40 0.01 0.94 0.06 0.06 19 76
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J11135553+0938336       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 8.0        arcsec               2a = 16.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 15.68 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.980                         b/a = 0.98
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.02
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.02
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 11 deg
Position Angle [Equinox]      :  -55   deg [J2000]                  125 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          : 168.481400      9.642763    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11135553+0938336 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 16.5 arcsec 2a = 32.90 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 32.24 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.980 b/a = 0.98 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.02 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.02 Uncertainty : ... ... Cos-1(b/a) : ... 11 deg Position Angle [Equinox] : -55 deg [J2000] 125 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 : 168.481400 9.642763 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J111355.54+093834.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 18.62 arcsec 2a = 37.23 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 17.01 arcsec 2b = 34.01 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] : 103.8 deg [J2000] 104 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 : 168.4814148 9.6428089 (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 J111355.54+093834.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.19 arcsec 2a = 8.39 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 : 168.4814148 9.6428089 (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 J111355.54+093834.1 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 1.90 arcsec 2a = 3.79 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.62 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.954 b/a = 0.95 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.05 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.05 Uncertainty : ... ... Cos-1(b/a) : ... 17 deg Position Angle [Equinox] : 84.8 deg [J2000] 85 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 : 168.4814148 9.6428089 (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 J111355.54+093834.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.20 arcsec 2a = 2.41 arcsec Uncertainty : 0.01 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 2.28 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.944 b/a = 0.94 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.06 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.06 Uncertainty : ... ... Cos-1(b/a) : ... 19 deg Position Angle [Equinox] : 76.2 deg [J2000] 76 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 : 168.4814148 9.6428089 (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 J111355.53+093834.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 18.62 arcsec 2a = 37.23 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 17.01 arcsec 2b = 34.02 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] : 103.8 deg [J2000] 104 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 : 168.4814052606 9.6428088749 (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 J111355.53+093834.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.19 arcsec 2a = 8.39 arcsec Uncertainty : 0.048 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 : 168.4814052606 9.6428088749 (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 J111355.53+093834.1 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 1.8954 arcsec 2a = 3.79 arcsec Uncertainty : 0.021 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.62 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.954 b/a = 0.95 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.05 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.05 Uncertainty : ... ... Cos-1(b/a) : ... 17 deg Position Angle [Equinox] : 84.8 deg [J2000] 85 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 : 168.4814052606 9.6428088749 (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 J111355.53+093834.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.2025 arcsec 2a = 2.40 arcsec Uncertainty : 0.007 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 2.27 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.944 b/a = 0.94 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.06 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.06 Uncertainty : ... ... Cos-1(b/a) : ... 19 deg Position Angle [Equinox] : 76.2 deg [J2000] 76 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 : 168.4814052606 9.6428088749 (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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