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Date and Time of the Query: 2019-02-23 T07:29:16 PST
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Diameter data point(s) for object NGC 4644

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
1.70 arcmin 0.70 arcmin ... ... ... ... 53
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 102.00 ... 0.41 0.59 0.71 66 53
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
29.3 (a) arcsec ... ... 0.340 (b/a) ... ... ... 45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 58.60 ... 0.34 0.66 0.79 70 45
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
44.6 (a) arcsec ... ... 0.340 (b/a) ... ... ... 45
[J2000]
Diameter for "total" magnitude 1.38E+14 89.30 ... 0.34 0.66 0.79 70 45
[J2000]
4 POSS1 103a-O
1962MCG1..C...0000V
0.60 arcmin 0.30 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 36.00 ... 0.50 0.50 0.60 60 ...
5 POSS1 103a-O
1962MCG1..C...0000V
1.50 arcmin 0.40 arcmin ... ... ... ... ... Moderate surface brightness 7.40E+14 90.00 ... 0.27 0.73 0.87 75 ...
6 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.21 log(2a) + 1 ... ... 0.51
log(a/b)
0.06 ... ... 53
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 97.30 14.40 0.31 0.69 0.83 72 53
[J2000]
7 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.21 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 97.30 ... ... ... ... ... ...
8 r (SDSS Isophotal)
2004SDSS3.C...0000:
57.81 (a) arcsec 14.08 arcsec ... ... ... ... 56.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 115.62 ... 0.24 0.76 0.89 76 57
[J2000]
9 r (SDSS Petrosian)
2004SDSS3.C...0000:
7.20 (a) arcsec ... ... ... 0.95 ... ... ... ... 4.77E+14 14.39 1.90 ... ... ... ... ...
10 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
7.26 (a) arcsec ... ... 0.400 (b/a) 0.05 ... ... 50.6
[J2000]
... 4.77E+14 14.53 0.11 0.40 0.60 0.72 66 51
[J2000]
11 r (SDSS Exponential)
2004SDSS3.C...0000:
4.04 (a) arcsec ... ... 0.448 (b/a) 0.02 ... ... 47.6
[J2000]
... 4.77E+14 8.08 0.04 0.45 0.55 0.67 63 48
[J2000]
12 r (SDSS Isophotal)
2007SDSS6.C...0000:
57.81 (a) arcsec 14.08 arcsec ... ... ... ... 56.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 115.62 ... 0.24 0.76 0.89 76 57
[J2000]
13 r (SDSS Petrosian)
2007SDSS6.C...0000:
7.20 (a) arcsec ... ... ... 0.948 ... ... ... ... 4.77E+14 14.39 1.90 ... ... ... ... ...
14 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
7.2641 (a) arcsec ... ... 0.400 (b/a) 0.055 ... ... 50.6
[J2000]
... 4.77E+14 14.53 0.11 0.40 0.60 0.72 66 51
[J2000]
15 r (SDSS Exponential)
2007SDSS6.C...0000:
4.0425 (a) arcsec ... ... 0.448 (b/a) 0.022 ... ... 47.6
[J2000]
... 4.77E+14 8.09 0.04 0.45 0.55 0.67 63 48
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 07887                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.70       arcmin                   2a = 102.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.70      arcmin              2b = 42.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.41
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.59
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.71
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 66 deg
Position Angle [Equinox]      :  53    deg [B1950]                  53 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          : 124024.         +552500.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Minor diameter flagged uncertain.       

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12424266+5508435 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 29.3 arcsec 2a = 58.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 19.92 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.340 b/a = 0.34 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.66 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 45 deg [J2000] 45 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 : 190.677734 55.145481 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12424266+5508435 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 44.6 arcsec 2a = 89.30 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 30.36 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.340 b/a = 0.34 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.66 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 45 deg [J2000] 45 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 : 190.677734 55.145481 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +09-21-030 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.60 arcmin 2a = 36.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.30 arcmin 2b = 18.00 arcsec Uncertainty : ... ... Axis Ratio : ... 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] : ... ... 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 : 124024 +5525 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +09-21-030 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.50 arcmin 2a = 90.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.40 arcmin 2b = 24.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.27 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.73 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.87 Uncertainty : ... ... Cos-1(b/a) : ... 75 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Moderate 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 : 124024 +5525 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 07887 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.21 2a = 97.30 arcsec Uncertainty : 0.06 14.40 arcsec Minor Axis (2b) : ... 2b = 30.07 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.51 b/a = 0.31 Uncertainty : 0.06 0.05 Ellipticity : ... 1 - b/a = 0.69 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.83 Uncertainty : ... ... Cos-1(b/a) : ... 72 deg Position Angle [Equinox] : 53 deg [J2000] 53 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 : 124236.0 +550800. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 07887 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.21 2a = 97.30 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 : 124236.0 +550800. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 8 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J124242.66+550843.8 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 57.81 arcsec 2a = 115.62 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.08 arcsec 2b = 28.16 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.24 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.76 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.89 Uncertainty : ... ... Cos-1(b/a) : ... 76 deg Position Angle [Equinox] : 56.5 deg [J2000] 57 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 : 190.6777344 55.1455116 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J124242.66+550843.8 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 7.20 arcsec 2a = 14.39 arcsec Uncertainty : 0.95 arcsec 1.90 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 : 190.6777344 55.1455116 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J124242.66+550843.8 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 7.26 arcsec 2a = 14.53 arcsec Uncertainty : 0.05 arcsec 0.11 arcsec Minor Axis (2b) : ... 2b = 5.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.72 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 50.6 deg [J2000] 51 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 : 190.6777344 55.1455116 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J124242.66+550843.8 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.04 arcsec 2a = 8.08 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.62 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.448 b/a = 0.45 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.55 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.67 Uncertainty : ... ... Cos-1(b/a) : ... 63 deg Position Angle [Equinox] : 47.6 deg [J2000] 48 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 : 190.6777344 55.1455116 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124242.65+550843.8 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 57.81 arcsec 2a = 115.62 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.08 arcsec 2b = 28.16 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.24 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.76 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.89 Uncertainty : ... ... Cos-1(b/a) : ... 76 deg Position Angle [Equinox] : 56.5 deg [J2000] 57 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 : 190.6777369874 55.1455129327 (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 J124242.65+550843.8 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 7.20 arcsec 2a = 14.39 arcsec Uncertainty : 0.948 arcsec 1.90 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 : 190.6777369874 55.1455129327 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 14 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124242.65+550843.8 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 7.2641 arcsec 2a = 14.53 arcsec Uncertainty : 0.055 arcsec 0.11 arcsec Minor Axis (2b) : ... 2b = 5.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.72 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 50.6 deg [J2000] 51 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 : 190.6777369874 55.1455129327 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 15 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J124242.65+550843.8 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.0425 arcsec 2a = 8.09 arcsec Uncertainty : 0.022 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.62 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.448 b/a = 0.45 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.55 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.67 Uncertainty : ... ... Cos-1(b/a) : ... 63 deg Position Angle [Equinox] : 47.6 deg [J2000] 48 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 : 190.6777369874 55.1455129327 (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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