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Date and Time of the Query: 2019-06-19 T12:20:26 PDT
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Diameter data point(s) for object IC 2842

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.......:
8.1 (a) arcsec ... ... 0.500 (b/a) ... ... ... 60
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 16.20 ... 0.50 0.50 0.60 60 60
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
16.3 (a) arcsec ... ... 0.500 (b/a) ... ... ... 60
[J2000]
Diameter for "total" magnitude 1.38E+14 32.60 ... 0.50 0.50 0.60 60 60
[J2000]
3 r (SDSS Isophotal)
2004SDSS3.C...0000:
13.63 (a) arcsec 6.30 arcsec ... ... ... ... 64.7
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 27.27 ... 0.46 0.54 0.65 62 65
[J2000]
4 r (SDSS Petrosian)
2004SDSS3.C...0000:
3.16 (a) arcsec ... ... ... 0.15 ... ... ... ... 4.77E+14 6.32 0.31 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
4.17 (a) arcsec ... ... 0.435 (b/a) 0.08 ... ... 67.3
[J2000]
... 4.77E+14 8.35 0.15 0.43 0.56 0.68 64 67
[J2000]
6 r (SDSS Exponential)
2004SDSS3.C...0000:
1.95 (a) arcsec ... ... 0.437 (b/a) 0.02 ... ... 66.9
[J2000]
... 4.77E+14 3.91 0.04 0.44 0.56 0.68 64 67
[J2000]
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
13.63 (a) arcsec 6.30 arcsec ... ... ... ... 64.7
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 27.27 ... 0.46 0.54 0.65 62 65
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
3.16 (a) arcsec ... ... ... 0.154 ... ... ... ... 4.77E+14 6.32 0.31 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
4.1734 (a) arcsec ... ... 0.435 (b/a) 0.077 ... ... 67.3
[J2000]
... 4.77E+14 8.35 0.15 0.43 0.56 0.68 64 67
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
1.9537 (a) arcsec ... ... 0.437 (b/a) 0.022 ... ... 66.9
[J2000]
... 4.77E+14 3.91 0.04 0.44 0.56 0.68 64 67
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J11274771+0939076       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 8.1        arcsec               2a = 16.20 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 8.10 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.500                         b/a = 0.50
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.50
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.60
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 60 deg
Position Angle [Equinox]      :   60   deg [J2000]                  60 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          : 171.948792      9.652029    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11274771+0939076 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 16.3 arcsec 2a = 32.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 16.30 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.500 b/a = 0.50 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.50 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.60 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : 60 deg [J2000] 60 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 : 171.948792 9.652029 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J112747.69+093907.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 13.63 arcsec 2a = 27.27 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 6.30 arcsec 2b = 12.60 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.46 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.65 Uncertainty : ... ... Cos-1(b/a) : ... 62 deg Position Angle [Equinox] : 64.7 deg [J2000] 65 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 : 171.9487305 9.6519785 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.16 arcsec 2a = 6.32 arcsec Uncertainty : 0.15 arcsec 0.31 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 : 171.9487305 9.6519785 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 4.17 arcsec 2a = 8.35 arcsec Uncertainty : 0.08 arcsec 0.15 arcsec Minor Axis (2b) : ... 2b = 3.63 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.435 b/a = 0.43 Uncertainty : 0.008 0.01 Ellipticity : ... 1 - b/a = 0.56 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.68 Uncertainty : ... ... Cos-1(b/a) : ... 64 deg Position Angle [Equinox] : 67.3 deg [J2000] 67 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 : 171.9487305 9.6519785 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.95 arcsec 2a = 3.91 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 1.71 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.437 b/a = 0.44 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.56 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.68 Uncertainty : ... ... Cos-1(b/a) : ... 64 deg Position Angle [Equinox] : 66.9 deg [J2000] 67 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 : 171.9487305 9.6519785 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 13.63 arcsec 2a = 27.27 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 6.30 arcsec 2b = 12.60 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.46 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.65 Uncertainty : ... ... Cos-1(b/a) : ... 62 deg Position Angle [Equinox] : 64.7 deg [J2000] 65 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 : 171.9487290820 9.6519783644 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.16 arcsec 2a = 6.32 arcsec Uncertainty : 0.154 arcsec 0.31 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 : 171.9487290820 9.6519783644 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 4.1734 arcsec 2a = 8.35 arcsec Uncertainty : 0.077 arcsec 0.15 arcsec Minor Axis (2b) : ... 2b = 3.63 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.435 b/a = 0.43 Uncertainty : 0.008 0.01 Ellipticity : ... 1 - b/a = 0.56 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.68 Uncertainty : ... ... Cos-1(b/a) : ... 64 deg Position Angle [Equinox] : 67.3 deg [J2000] 67 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 : 171.9487290820 9.6519783644 (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 J112747.69+093907.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.9537 arcsec 2a = 3.91 arcsec Uncertainty : 0.022 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 1.71 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.437 b/a = 0.44 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.56 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.68 Uncertainty : ... ... Cos-1(b/a) : ... 64 deg Position Angle [Equinox] : 66.9 deg [J2000] 67 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 : 171.9487290820 9.6519783644 (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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