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Date and Time of the Query: 2019-04-19 T02:05:01 PDT
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Diameter data point(s) for object IC 1446

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.......:
15.9 (a) arcsec ... ... 0.740 (b/a) ... ... ... 25
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 31.80 ... 0.74 0.26 0.29 42 25
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
40.4 (a) arcsec ... ... 0.740 (b/a) ... ... ... 25
[J2000]
Diameter for "total" magnitude 1.38E+14 80.90 ... 0.74 0.26 0.29 42 25
[J2000]
3 r (SDSS Isophotal)
2004SDSS2.C...0000:
30.97 (a) arcsec 18.08 arcsec ... ... ... ... 33.3
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 61.94 ... 0.58 0.42 0.49 54 33
[J2000]
4 r (SDSS Petrosian)
2004SDSS2.C...0000:
5.07 (a) arcsec ... ... ... 0.32 ... ... ... ... 4.77E+14 10.14 0.63 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2004SDSS2.C...0000:
3.41 (a) arcsec ... ... 0.623 (b/a) 0.02 ... ... 28.9
[J2000]
... 4.77E+14 6.82 0.05 0.62 0.38 0.44 51 29
[J2000]
6 r (SDSS Exponential)
2004SDSS2.C...0000:
2.21 (a) arcsec ... ... 0.587 (b/a) 0.01 ... ... 28.1
[J2000]
... 4.77E+14 4.42 0.02 0.59 0.41 0.49 54 28
[J2000]
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
30.97 (a) arcsec 18.08 arcsec ... ... ... ... 33.3
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 61.94 ... 0.58 0.42 0.49 54 33
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
5.07 (a) arcsec ... ... ... 0.316 ... ... ... ... 4.77E+14 10.14 0.63 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
3.4091 (a) arcsec ... ... 0.623 (b/a) 0.023 ... ... 28.9
[J2000]
... 4.77E+14 6.82 0.04 0.62 0.38 0.44 51 29
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
2.2108 (a) arcsec ... ... 0.587 (b/a) 0.009 ... ... 28.1
[J2000]
... 4.77E+14 4.42 0.02 0.59 0.41 0.49 54 28
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J22290466-0111060       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 15.9       arcsec               2a = 31.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 23.53 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.740                         b/a = 0.74
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.26
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.29
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 42 deg
Position Angle [Equinox]      :   25   deg [J2000]                  25 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          : 337.269501      -1.184940    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J22290466-0111060 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 40.4 arcsec 2a = 80.90 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 59.87 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.740 b/a = 0.74 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.26 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.29 Uncertainty : ... ... Cos-1(b/a) : ... 42 deg Position Angle [Equinox] : 25 deg [J2000] 25 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 : 337.269501 -1.184940 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J222904.70-011105.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 30.97 arcsec 2a = 61.94 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 18.08 arcsec 2b = 36.16 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.58 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.49 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : 33.3 deg [J2000] 33 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 : 337.2695618 -1.1849213 (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 : 2004SDSS2.C...0000: Published Object Name : SDSS J222904.70-011105.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.07 arcsec 2a = 10.14 arcsec Uncertainty : 0.32 arcsec 0.63 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 : 337.2695618 -1.1849213 (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 J222904.70-011105.7 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 3.41 arcsec 2a = 6.82 arcsec Uncertainty : 0.02 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 4.25 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.623 b/a = 0.62 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.44 Uncertainty : ... ... Cos-1(b/a) : ... 51 deg Position Angle [Equinox] : 28.9 deg [J2000] 29 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 : 337.2695618 -1.1849213 (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 : 2004SDSS2.C...0000: Published Object Name : SDSS J222904.70-011105.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.21 arcsec 2a = 4.42 arcsec Uncertainty : 0.01 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.59 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.587 b/a = 0.59 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.41 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.49 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : 28.1 deg [J2000] 28 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 : 337.2695618 -1.1849213 (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 J222904.69-011105.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 30.97 arcsec 2a = 61.94 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 18.08 arcsec 2b = 36.16 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.58 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.49 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : 33.3 deg [J2000] 33 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 : 337.2695775777 -1.1849213274 (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 J222904.69-011105.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.07 arcsec 2a = 10.14 arcsec Uncertainty : 0.316 arcsec 0.63 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 : 337.2695775777 -1.1849213274 (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 J222904.69-011105.7 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 3.4091 arcsec 2a = 6.82 arcsec Uncertainty : 0.023 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 4.25 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.623 b/a = 0.62 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.44 Uncertainty : ... ... Cos-1(b/a) : ... 51 deg Position Angle [Equinox] : 28.9 deg [J2000] 29 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 : 337.2695775777 -1.1849213274 (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 J222904.69-011105.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.2108 arcsec 2a = 4.42 arcsec Uncertainty : 0.009 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.60 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.587 b/a = 0.59 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.41 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.49 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : 28.1 deg [J2000] 28 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 : 337.2695775777 -1.1849213274 (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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