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Date and Time of the Query: 2019-05-22 T09:46:57 PDT
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Diameter data point(s) for object IC 2566

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.......:
19.2 (a) arcsec ... ... 0.660 (b/a) ... ... ... 0
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 38.40 ... 0.66 0.34 0.39 49 0
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
31.3 (a) arcsec ... ... 0.660 (b/a) ... ... ... 0
[J2000]
Diameter for "total" magnitude 1.38E+14 62.60 ... 0.66 0.34 0.39 49 0
[J2000]
3 POSS1 103a-O
1964MCG2..C...0000V
0.30 arcmin 0.20 arcmin ... ... ... ... ... High surface brightness 7.40E+14 18.00 ... 0.67 0.33 0.38 48 ...
4 POSS1 103a-O
1964MCG2..C...0000V
0.70 arcmin 0.45 arcmin ... ... ... ... ... Low surface brightness 7.40E+14 42.00 ... 0.64 0.36 0.41 50 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
0.89 log(2a) + 1 ... ... 0.19
log(a/b)
0.11 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 46.60 13.40 0.65 0.35 0.41 50 ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
0.89 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 46.60 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2006SDSS5.C...0000:
33.61 (a) arcsec 21.26 arcsec ... ... ... ... 8.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 67.22 ... 0.63 0.37 0.43 51 9
[J2000]
8 r (SDSS Petrosian)
2006SDSS5.C...0000:
6.39 (a) arcsec ... ... ... 0.25 ... ... ... ... 4.77E+14 12.78 0.50 ... ... ... ... ...
9 r (SDSS de Vaucouleurs)
2006SDSS5.C...0000:
3.26 (a) arcsec ... ... 0.619 (b/a) 0.01 ... ... 178.4
[J2000]
... 4.77E+14 6.51 0.03 0.62 0.38 0.45 52 178
[J2000]
10 r (SDSS Exponential)
2006SDSS5.C...0000:
2.34 (a) arcsec ... ... 0.619 (b/a) 0.01 ... ... 176.2
[J2000]
... 4.77E+14 4.68 0.02 0.62 0.38 0.45 52 176
[J2000]
11 r (SDSS Isophotal)
2007SDSS6.C...0000:
33.61 (a) arcsec 21.26 arcsec ... ... ... ... 8.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 67.22 ... 0.63 0.37 0.43 51 9
[J2000]
12 r (SDSS Petrosian)
2007SDSS6.C...0000:
6.39 (a) arcsec ... ... ... 0.251 ... ... ... ... 4.77E+14 12.78 0.50 ... ... ... ... ...
13 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
3.2567 (a) arcsec ... ... 0.619 (b/a) 0.014 ... ... 178.4
[J2000]
... 4.77E+14 6.51 0.03 0.62 0.38 0.45 52 178
[J2000]
14 r (SDSS Exponential)
2007SDSS6.C...0000:
2.3389 (a) arcsec ... ... 0.619 (b/a) 0.009 ... ... 176.2
[J2000]
... 4.77E+14 4.68 0.02 0.62 0.38 0.45 52 176
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J10221939+3634585       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 19.2       arcsec               2a = 38.40 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 25.34 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.660                         b/a = 0.66
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.34
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.39
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 49 deg
Position Angle [Equinox]      :    0   deg [J2000]                  0 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          : 155.580780      36.582977    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J10221939+3634585 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 31.3 arcsec 2a = 62.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 41.32 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.660 b/a = 0.66 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.34 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.39 Uncertainty : ... ... Cos-1(b/a) : ... 49 deg Position Angle [Equinox] : 0 deg [J2000] 0 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 : 155.580780 36.582977 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-23-008 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.30 arcmin 2a = 18.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.20 arcmin 2b = 12.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.67 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.33 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.38 Uncertainty : ... ... Cos-1(b/a) : ... 48 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : High surface brightness Frequency : 4050 A 7.40E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Photographic plate, print, or film Fitting Technique : Eye estimate Measured Quantity : "Inner" diameter Coordinates Targeted : 101930 +3651 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-23-008 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.70 arcmin 2a = 42.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.45 arcmin 2b = 27.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.64 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.36 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.41 Uncertainty : ... ... Cos-1(b/a) : ... 50 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Low surface brightness Frequency : 4050 A 7.40E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Photographic plate, print, or film Fitting Technique : Eye estimate Measured Quantity : "Outer" diameter Coordinates Targeted : 101930 +3651 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +06-23-008 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 0.89 2a = 46.60 arcsec Uncertainty : 0.11 13.40 arcsec Minor Axis (2b) : ... 2b = 30.10 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.19 b/a = 0.65 Uncertainty : 0.07 0.11 Ellipticity : ... 1 - b/a = 0.35 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.41 Uncertainty : ... ... Cos-1(b/a) : ... 50 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : Mean error Diameter Reference Level : 25.0 B-mag arcsec^-2^ Frequency : 4400 A 6.81E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Photographic plate, print, or film Fitting Technique : Eye estimate Measured Quantity : Isophotal diameter Coordinates Targeted : 102219.6 +363459. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +06-23-008 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 0.89 2a = 46.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... ... Uncertainty : ... ... Axis Ratio : ... ... Uncertainty : ... ... Ellipticity : ... ... Uncertainty : ... ... Eccentricity : ... ... Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 25.0 B-mag arcsec^-2^ Frequency : 4400 A 6.81E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Photographic plate, print, or film Fitting Technique : Eye estimate Measured Quantity : Isophotal diameter Coordinates Targeted : 102219.6 +363459. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2006SDSS5.C...0000: Published Object Name : SDSS J102219.39+363458.9 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 33.61 arcsec 2a = 67.22 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 21.26 arcsec 2b = 42.52 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.63 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.37 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.43 Uncertainty : ... ... Cos-1(b/a) : ... 51 deg Position Angle [Equinox] : 8.8 deg [J2000] 9 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 : 155.5807800 36.5830307 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J102219.39+363458.9 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 6.39 arcsec 2a = 12.78 arcsec Uncertainty : 0.25 arcsec 0.50 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 : 155.5807800 36.5830307 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J102219.39+363458.9 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 3.26 arcsec 2a = 6.51 arcsec Uncertainty : 0.01 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 4.03 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.619 b/a = 0.62 Uncertainty : 0.003 0.00 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] : 178.4 deg [J2000] 178 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 : 155.5807800 36.5830307 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J102219.39+363458.9 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.34 arcsec 2a = 4.68 arcsec Uncertainty : 0.01 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.90 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.619 b/a = 0.62 Uncertainty : 0.003 0.00 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] : 176.2 deg [J2000] 176 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 : 155.5807800 36.5830307 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 11 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J102219.38+363458.9 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 33.61 arcsec 2a = 67.22 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 21.26 arcsec 2b = 42.52 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.63 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.37 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.43 Uncertainty : ... ... Cos-1(b/a) : ... 51 deg Position Angle [Equinox] : 8.8 deg [J2000] 9 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 : 155.5807805445 36.5830337332 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J102219.38+363458.9 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 6.39 arcsec 2a = 12.78 arcsec Uncertainty : 0.251 arcsec 0.50 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 : 155.5807805445 36.5830337332 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 13 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J102219.38+363458.9 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 3.2567 arcsec 2a = 6.51 arcsec Uncertainty : 0.014 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 4.03 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.619 b/a = 0.62 Uncertainty : 0.003 0.00 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] : 178.4 deg [J2000] 178 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 : 155.5807805445 36.5830337332 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 14 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J102219.38+363458.9 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.3389 arcsec 2a = 4.68 arcsec Uncertainty : 0.009 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.90 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.619 b/a = 0.62 Uncertainty : 0.003 0.00 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] : 176.2 deg [J2000] 176 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 : 155.5807805445 36.5830337332 (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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