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Date and Time of the Query: 2019-04-22 T11:58:52 PDT
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Diameter data point(s) for object NGC 3758

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
1964MCG2..C...0000V
0.50 arcmin 0.45 arcmin ... ... ... ... ... High surface brightness 7.40E+14 30.00 ... 0.90 0.10 0.10 26 ...
2 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
0.74 log(2a) + 1 ... ... 0.05
log(a/b)
0.14 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 33.00 12.50 0.89 0.11 0.11 27 ...
3 RC3 D_0 (blue)
1991RC3.9.C...0000d
0.74 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 33.00 ... ... ... ... ... ...


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1964MCG2..C...0000V
Published Object Name         : MCG +04-27-073                
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 0.50       arcmin                   2a = 30.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.45      arcmin              2b = 27.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.90
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.10
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.10
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 26 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         : "Outer" diameter
Coordinates Targeted          : 113348          +2151    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +04-27-073 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 0.74 2a = 33.00 arcsec Uncertainty : 0.14 12.50 arcsec Minor Axis (2b) : ... 2b = 29.40 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.05 b/a = 0.89 Uncertainty : 0.07 0.16 Ellipticity : ... 1 - b/a = 0.11 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.11 Uncertainty : ... ... Cos-1(b/a) : ... 27 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 : 113629.2 +213548. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +04-27-073 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 0.74 2a = 33.00 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 : 113629.2 +213548. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.

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