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Date and Time of the Query: 2019-04-19 T00:55:40 PDT
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Diameter data point(s) for object NGC 3780

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
3.10 arcmin 2.50 arcmin ... ... ... ... 90
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 186.00 ... 0.81 0.19 0.21 36 90
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
66.6 (a) arcsec ... ... 0.640 (b/a) ... ... ... 80
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 133.20 ... 0.64 0.36 0.42 50 80
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
66.6 (a) arcsec ... ... 0.640 (b/a) ... ... ... 80
[J2000]
Diameter for "total" magnitude 1.38E+14 133.10 ... 0.64 0.36 0.42 50 80
[J2000]
4 POSS1 103a-O
1962MCG1..C...0000V
1.00 arcmin 0.70 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 60.00 ... 0.70 0.30 0.34 46 ...
5 POSS1 103a-O
1962MCG1..C...0000V
3.00 arcmin 2.30 arcmin ... ... ... ... ... Intermed. surface brightness 7.40E+14 180.00 ... 0.77 0.23 0.26 40 ...
6 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.49 log(2a) + 1 ... ... 0.10
log(a/b)
0.03 ... ... 90
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 185.40 13.30 0.79 0.21 0.23 37 90
[J2000]
7 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.49 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 185.40 ... ... ... ... ... ...
8 r (SDSS Isophotal)
2005SDSS4.C...0000:
63.68 (a) arcsec 54.51 arcsec ... ... ... ... 35.2
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 127.36 ... 0.86 0.14 0.15 31 35
[J2000]
9 r (SDSS Petrosian)
2005SDSS4.C...0000:
22.44 (a) arcsec ... ... ... 0.60 ... ... ... ... 4.77E+14 44.89 1.19 ... ... ... ... ...
10 r (SDSS de Vaucouleurs)
2005SDSS4.C...0000:
11.75 (a) arcsec ... ... 0.779 (b/a) 0.10 ... ... 79.7
[J2000]
... 4.77E+14 23.50 0.20 0.78 0.22 0.24 39 80
[J2000]
11 r (SDSS Exponential)
2005SDSS4.C...0000:
10.16 (a) arcsec ... ... 0.655 (b/a) 0.05 ... ... 73.4
[J2000]
... 4.77E+14 20.32 0.10 0.66 0.34 0.40 49 73
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 06615                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 3.10       arcmin                   2a = 186.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  2.50      arcmin              2b = 150.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.81
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.19
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.21
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 36 deg
Position Angle [Equinox]      :  90    deg [B1950]                  90 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          : 113636.         +563200.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11392237+5616146 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 66.6 arcsec 2a = 133.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 85.25 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.640 b/a = 0.64 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.36 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.42 Uncertainty : ... ... Cos-1(b/a) : ... 50 deg Position Angle [Equinox] : 80 deg [J2000] 80 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 : 174.843185 56.270706 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11392237+5616146 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 66.6 arcsec 2a = 133.10 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 85.18 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.640 b/a = 0.64 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.36 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.42 Uncertainty : ... ... Cos-1(b/a) : ... 50 deg Position Angle [Equinox] : 80 deg [J2000] 80 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 : 174.843185 56.270706 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +09-19-150 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.00 arcmin 2a = 60.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.70 arcmin 2b = 42.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 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 : 113648 +5633 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +09-19-150 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 3.00 arcmin 2a = 180.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 2.30 arcmin 2b = 138.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.77 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.23 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.26 Uncertainty : ... ... Cos-1(b/a) : ... 40 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Intermed. 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 : 113648 +5633 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06615 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.49 2a = 185.40 arcsec Uncertainty : 0.03 13.30 arcsec Minor Axis (2b) : ... 2b = 147.21 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.10 b/a = 0.79 Uncertainty : 0.03 0.06 Ellipticity : ... 1 - b/a = 0.21 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.23 Uncertainty : ... ... Cos-1(b/a) : ... 37 deg Position Angle [Equinox] : 90 deg [J2000] 90 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 : 113923.5 +561615. (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 06615 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.49 2a = 185.40 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 : 113923.5 +561615. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 8 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J113922.36+561614.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 63.68 arcsec 2a = 127.36 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 54.51 arcsec 2b = 109.02 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.86 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.14 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.15 Uncertainty : ... ... Cos-1(b/a) : ... 31 deg Position Angle [Equinox] : 35.2 deg [J2000] 35 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 : 174.8431549 56.2706604 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J113922.36+561614.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 22.44 arcsec 2a = 44.89 arcsec Uncertainty : 0.60 arcsec 1.19 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 : 174.8431549 56.2706604 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J113922.36+561614.4 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 11.75 arcsec 2a = 23.50 arcsec Uncertainty : 0.10 arcsec 0.20 arcsec Minor Axis (2b) : ... 2b = 18.31 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.779 b/a = 0.78 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.22 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.24 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : 79.7 deg [J2000] 80 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 : 174.8431549 56.2706604 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J113922.36+561614.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 10.16 arcsec 2a = 20.32 arcsec Uncertainty : 0.05 arcsec 0.10 arcsec Minor Axis (2b) : ... 2b = 13.31 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.655 b/a = 0.66 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.34 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.40 Uncertainty : ... ... Cos-1(b/a) : ... 49 deg Position Angle [Equinox] : 73.4 deg [J2000] 73 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 : 174.8431549 56.2706604 (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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