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Date and Time of the Query: 2019-06-25 T03:26:32 PDT
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Diameter data point(s) for object NGC 5566

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 POSS1 103a-O
1973UGC...C...0000N
6.20 arcmin 2.30 arcmin ... ... ... ... 35
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 372.00 ... 0.37 0.63 0.76 68 35
[J2000]
2 POSS1 103a-O
1963MCG3..C...0000V
1.40 arcmin 0.80 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 84.00 ... 0.57 0.43 0.51 55 ...
3 POSS1 103a-O
1963MCG3..C...0000V
7.00 arcmin 2.00 arcmin ... ... ... ... ... Low surface brightness 7.40E+14 420.00 ... 0.29 0.71 0.85 73 ...
4 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.82 log(2a) + 1 ... ... 0.48
log(a/b)
0.02 ... ... 35
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 396.40 18.70 0.33 0.67 0.80 71 35
[J2000]
5 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.83 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 405.60 ... ... ... ... ... ...
6 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
90.6 (a) arcsec ... ... 0.530 (b/a) ... ... ... 17.5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 181.20 ... 0.53 0.47 0.56 58 18
[J2000]
7 K_s (LGA/2MASS "total")
2003AJ....125..525J
170.2 (a) arcsec ... ... 0.530 (b/a) ... ... ... 17.5
[J2000]
Diameter for "total" magnitude 1.38E+14 340.40 ... 0.53 0.47 0.56 58 18
[J2000]
8 r (SDSS Isophotal)
2007SDSS6.C...0000:
85.30 (a) arcsec 33.99 arcsec ... ... ... ... 20.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 170.61 ... 0.40 0.60 0.73 67 21
[J2000]
9 r (SDSS Petrosian)
2007SDSS6.C...0000:
10.84 (a) arcsec ... ... ... 0.262 ... ... ... ... 4.77E+14 21.67 0.52 ... ... ... ... ...
10 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
5.5412 (a) arcsec ... ... 0.472 (b/a) 0.019 ... ... 23.1
[J2000]
... 4.77E+14 11.08 0.04 0.47 0.53 0.64 62 23
[J2000]
11 r (SDSS Exponential)
2007SDSS6.C...0000:
3.6557 (a) arcsec ... ... 0.614 (b/a) 0.012 ... ... 22.9
[J2000]
... 4.77E+14 7.31 0.02 0.61 0.39 0.45 52 23
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 09175                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 6.20       arcmin                   2a = 372.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  2.30      arcmin              2b = 138.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.37
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.63
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.76
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 68 deg
Position Angle [Equinox]      :  35    deg [B1950]                  35 deg [J2000]
Uncertainty                   : ...                                 ...
Significance                  : No uncertainty reported
Diameter Reference Level      : About 25.0 B-mag arcsec^-2^   
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          : 141748.         +040900.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +01-37-002 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.40 arcmin 2a = 84.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.80 arcmin 2b = 48.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.57 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.43 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.51 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Very 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 : 141748 +0409 (B1950) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +01-37-002 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 7.00 arcmin 2a = 420.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 2.00 arcmin 2b = 120.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.29 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.71 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.85 Uncertainty : ... ... Cos-1(b/a) : ... 73 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 : 141748 +0409 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 09175 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.82 2a = 396.40 arcsec Uncertainty : 0.02 18.70 arcsec Minor Axis (2b) : ... 2b = 131.21 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.48 b/a = 0.33 Uncertainty : 0.03 0.02 Ellipticity : ... 1 - b/a = 0.67 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.80 Uncertainty : ... ... Cos-1(b/a) : ... 71 deg Position Angle [Equinox] : 35 deg [J2000] 35 deg [J2000] 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 : 142020.5 +035559. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 09175 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.83 2a = 405.60 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 : 142020.5 +035559. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 6 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 5566 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 90.6 arcsec 2a = 181.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 96.04 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.530 b/a = 0.53 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.47 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.56 Uncertainty : ... ... Cos-1(b/a) : ... 58 deg Position Angle [Equinox] : 17.5 deg [J2000] 18 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 : 215.083115 3.933590 (J2000) Qualifiers : From new, raw data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 5566 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 170.2 arcsec 2a = 340.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 180.41 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.530 b/a = 0.53 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.47 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.56 Uncertainty : ... ... Cos-1(b/a) : ... 58 deg Position Angle [Equinox] : 17.5 deg [J2000] 18 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 : 215.083115 3.933590 (J2000) Qualifiers : From new, raw data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J142019.88+035601.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 85.30 arcsec 2a = 170.61 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 33.99 arcsec 2b = 67.98 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.40 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.73 Uncertainty : ... ... Cos-1(b/a) : ... 67 deg Position Angle [Equinox] : 20.5 deg [J2000] 21 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 : 215.0828697472 3.9337480995 (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 J142019.88+035601.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 10.84 arcsec 2a = 21.67 arcsec Uncertainty : 0.262 arcsec 0.52 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 : 215.0828697472 3.9337480995 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 10 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J142019.88+035601.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 5.5412 arcsec 2a = 11.08 arcsec Uncertainty : 0.019 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 5.23 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.472 b/a = 0.47 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.53 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.64 Uncertainty : ... ... Cos-1(b/a) : ... 62 deg Position Angle [Equinox] : 23.1 deg [J2000] 23 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 : 215.0828697472 3.9337480995 (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 J142019.88+035601.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 3.6557 arcsec 2a = 7.31 arcsec Uncertainty : 0.012 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 4.49 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.614 b/a = 0.61 Uncertainty : 0.002 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] : 22.9 deg [J2000] 23 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 : 215.0828697472 3.9337480995 (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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