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Date and Time of the Query: 2019-06-26 T01:37:56 PDT
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Diameter data point(s) for object IC 2797

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.......:
9.7 (a) arcsec ... ... 0.780 (b/a) ... ... ... -50
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 19.40 ... 0.78 0.22 0.24 39 130
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
16.7 (a) arcsec ... ... 0.780 (b/a) ... ... ... -50
[J2000]
Diameter for "total" magnitude 1.38E+14 33.50 ... 0.78 0.22 0.24 39 130
[J2000]
3 r (SDSS Isophotal)
2005SDSS4.C...0000:
22.53 (a) arcsec 14.03 arcsec ... ... ... ... 133.2
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 45.05 ... 0.62 0.38 0.44 51 133
[J2000]
4 r (SDSS Petrosian)
2005SDSS4.C...0000:
3.88 (a) arcsec ... ... ... 0.28 ... ... ... ... 4.77E+14 7.76 0.57 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2005SDSS4.C...0000:
2.27 (a) arcsec ... ... 0.617 (b/a) 0.02 ... ... 129.3
[J2000]
... 4.77E+14 4.55 0.04 0.62 0.38 0.45 52 129
[J2000]
6 r (SDSS Exponential)
2005SDSS4.C...0000:
1.39 (a) arcsec ... ... 0.615 (b/a) 0.01 ... ... 129.3
[J2000]
... 4.77E+14 2.78 0.01 0.61 0.39 0.45 52 129
[J2000]
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
22.53 (a) arcsec 14.03 arcsec ... ... ... ... 133.2
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 45.05 ... 0.62 0.38 0.44 51 133
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
3.88 (a) arcsec ... ... ... 0.285 ... ... ... ... 4.77E+14 7.75 0.57 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.2741 (a) arcsec ... ... 0.617 (b/a) 0.022 ... ... 129.3
[J2000]
... 4.77E+14 4.55 0.04 0.62 0.38 0.45 52 129
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
1.3891 (a) arcsec ... ... 0.615 (b/a) 0.007 ... ... 129.3
[J2000]
... 4.77E+14 2.78 0.01 0.61 0.39 0.45 52 129
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J11242105+1142212       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 9.7        arcsec               2a = 19.40 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 15.13 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.780                         b/a = 0.78
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.22
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.24
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 39 deg
Position Angle [Equinox]      :  -50   deg [J2000]                  130 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          : 171.087784      11.705912    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11242105+1142212 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 16.7 arcsec 2a = 33.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 26.13 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.780 b/a = 0.78 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.22 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.24 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : -50 deg [J2000] 130 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 : 171.087784 11.705912 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J112421.06+114221.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 22.53 arcsec 2a = 45.05 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.03 arcsec 2b = 28.05 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.62 Uncertainty : ... ... 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] : 133.2 deg [J2000] 133 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 : 171.0877533 11.7059422 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J112421.06+114221.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.88 arcsec 2a = 7.76 arcsec Uncertainty : 0.28 arcsec 0.57 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 : 171.0877533 11.7059422 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J112421.06+114221.4 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 2.27 arcsec 2a = 4.55 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 2.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.617 b/a = 0.62 Uncertainty : 0.005 0.01 Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 129.3 deg [J2000] 129 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 : 171.0877533 11.7059422 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J112421.06+114221.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.39 arcsec 2a = 2.78 arcsec Uncertainty : 0.01 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.71 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.615 b/a = 0.61 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.39 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 129.3 deg [J2000] 129 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 : 171.0877533 11.7059422 (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 J112421.06+114221.3 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 22.53 arcsec 2a = 45.05 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.03 arcsec 2b = 28.06 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.62 Uncertainty : ... ... 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] : 133.2 deg [J2000] 133 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 : 171.0877569010 11.7059421859 (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 J112421.06+114221.3 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.88 arcsec 2a = 7.75 arcsec Uncertainty : 0.285 arcsec 0.57 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 : 171.0877569010 11.7059421859 (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 J112421.06+114221.3 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.2741 arcsec 2a = 4.55 arcsec Uncertainty : 0.022 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 2.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.617 b/a = 0.62 Uncertainty : 0.005 0.01 Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 129.3 deg [J2000] 129 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 : 171.0877569010 11.7059421859 (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 J112421.06+114221.3 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.3891 arcsec 2a = 2.78 arcsec Uncertainty : 0.007 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.71 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.615 b/a = 0.61 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.39 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 129.3 deg [J2000] 129 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 : 171.0877569010 11.7059421859 (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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