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Date and Time of the Query: 2019-04-24 T04:55:33 PDT
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Diameter data point(s) for object NGC 3916

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
1.60 arcmin 0.35 arcmin ... ... ... ... 45
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 96.00 ... 0.22 0.78 0.91 77 45
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
27.2 (a) arcsec ... ... 0.400 (b/a) ... ... ... 45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 54.40 ... 0.40 0.60 0.72 66 45
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
42.1 (a) arcsec ... ... 0.400 (b/a) ... ... ... 45
[J2000]
Diameter for "total" magnitude 1.38E+14 84.20 ... 0.40 0.60 0.72 66 45
[J2000]
4 POSS1 103a-O
1962MCG1..C...0000V
0.90 arcmin 0.25 arcmin ... ... ... ... ... High surface brightness 7.40E+14 54.00 ... 0.28 0.72 0.86 74 ...
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
1.20 log(2a) + 1 ... ... 0.57
log(a/b)
0.04 ... ... 45
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 95.10 9.20 0.27 0.73 0.87 74 45
[J2000]
7 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.20 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 95.10 ... ... ... ... ... ...
8 r (SDSS Isophotal)
2004SDSS3.C...0000:
45.62 (a) arcsec 15.83 arcsec ... ... ... ... 44.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 91.25 ... 0.35 0.65 0.79 70 45
[J2000]
9 r (SDSS Petrosian)
2004SDSS3.C...0000:
8.02 (a) arcsec ... ... ... 1.08 ... ... ... ... 4.77E+14 16.04 2.16 ... ... ... ... ...
10 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
7.14 (a) arcsec ... ... 0.397 (b/a) 0.05 ... ... 48.0
[J2000]
... 4.77E+14 14.28 0.10 0.40 0.60 0.73 67 48
[J2000]
11 r (SDSS Exponential)
2004SDSS3.C...0000:
4.65 (a) arcsec ... ... 0.347 (b/a) 0.02 ... ... 49.4
[J2000]
... 4.77E+14 9.30 0.04 0.35 0.65 0.79 70 49
[J2000]
12 r (SDSS Isophotal)
2007SDSS6.C...0000:
45.62 (a) arcsec 15.83 arcsec ... ... ... ... 44.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 91.25 ... 0.35 0.65 0.79 70 45
[J2000]
13 r (SDSS Petrosian)
2007SDSS6.C...0000:
8.02 (a) arcsec ... ... ... 1.080 ... ... ... ... 4.77E+14 16.04 2.16 ... ... ... ... ...
14 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
7.1375 (a) arcsec ... ... 0.397 (b/a) 0.051 ... ... 48.0
[J2000]
... 4.77E+14 14.28 0.10 0.40 0.60 0.73 67 48
[J2000]
15 r (SDSS Exponential)
2007SDSS6.C...0000:
4.6505 (a) arcsec ... ... 0.347 (b/a) 0.020 ... ... 49.4
[J2000]
... 4.77E+14 9.30 0.04 0.35 0.65 0.79 70 49
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 06819                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.60       arcmin                   2a = 96.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.35      arcmin              2b = 21.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.22
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.78
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.91
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 77 deg
Position Angle [Equinox]      :  45    deg [B1950]                  45 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          : 114812.         +552500.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11505098+5508372 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 27.2 arcsec 2a = 54.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 21.76 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : ... ... 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] : 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 : 177.712494 55.143665 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11505098+5508372 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 42.1 arcsec 2a = 84.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 33.68 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : ... ... 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] : 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 : 177.712494 55.143665 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +09-20-005 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.90 arcmin 2a = 54.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.28 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.72 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.86 Uncertainty : ... ... Cos-1(b/a) : ... 74 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 : 114806 +5527 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +09-20-005 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 : 114806 +5527 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06819 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.20 2a = 95.10 arcsec Uncertainty : 0.04 9.20 arcsec Minor Axis (2b) : ... 2b = 25.58 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.57 b/a = 0.27 Uncertainty : 0.04 0.03 Ellipticity : ... 1 - b/a = 0.73 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.87 Uncertainty : ... ... Cos-1(b/a) : ... 74 deg Position Angle [Equinox] : 45 deg [J2000] 45 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 : 115050.5 +550844. (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 06819 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.20 2a = 95.10 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 : 115050.5 +550844. (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 J115051.05+550837.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 45.62 arcsec 2a = 91.25 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 15.83 arcsec 2b = 31.66 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.35 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.65 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 44.5 deg [J2000] 45 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 : 177.7126923 55.1436462 (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 J115051.05+550837.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 8.02 arcsec 2a = 16.04 arcsec Uncertainty : 1.08 arcsec 2.16 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 : 177.7126923 55.1436462 (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 J115051.05+550837.1 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 7.14 arcsec 2a = 14.28 arcsec Uncertainty : 0.05 arcsec 0.10 arcsec Minor Axis (2b) : ... 2b = 5.67 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.397 b/a = 0.40 Uncertainty : 0.003 0.00 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] : 48.0 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 : 177.7126923 55.1436462 (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 J115051.05+550837.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.65 arcsec 2a = 9.30 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.23 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.347 b/a = 0.35 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.65 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 49.4 deg [J2000] 49 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 : 177.7126923 55.1436462 (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 J115051.04+550837.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 45.62 arcsec 2a = 91.25 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 15.83 arcsec 2b = 31.66 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.35 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.65 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 44.5 deg [J2000] 45 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 : 177.7126963882 55.1436488929 (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 J115051.04+550837.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 8.02 arcsec 2a = 16.04 arcsec Uncertainty : 1.080 arcsec 2.16 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 : 177.7126963882 55.1436488929 (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 J115051.04+550837.1 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 7.1375 arcsec 2a = 14.28 arcsec Uncertainty : 0.051 arcsec 0.10 arcsec Minor Axis (2b) : ... 2b = 5.67 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.397 b/a = 0.40 Uncertainty : 0.003 0.00 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] : 48.0 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 : 177.7126963882 55.1436488929 (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 J115051.04+550837.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.6505 arcsec 2a = 9.30 arcsec Uncertainty : 0.020 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 3.23 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.347 b/a = 0.35 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.65 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 49.4 deg [J2000] 49 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 : 177.7126963882 55.1436488929 (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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