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Date and Time of the Query: 2019-04-19 T08:23:13 PDT
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Diameter data point(s) for object NGC 3902

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 1.30 arcmin ... ... ... ... 85
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 102.00 ... 0.77 0.23 0.26 40 85
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
21.2 (a) arcsec ... ... 0.680 (b/a) ... ... ... -45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 42.40 ... 0.68 0.32 0.37 47 135
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
35.2 (a) arcsec ... ... 0.680 (b/a) ... ... ... -45
[J2000]
Diameter for "total" magnitude 1.38E+14 70.40 ... 0.68 0.32 0.37 47 135
[J2000]
4 POSS1 103a-O
1964MCG2..C...0000V
0.90 arcmin 0.60 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 54.00 ... 0.67 0.33 0.38 48 ...
5 POSS1 103a-O
1964MCG2..C...0000V
1.50 arcmin 1.30 arcmin ... ... ... ... ... High surface brightness 7.40E+14 90.00 ... 0.87 0.13 0.14 30 ...
6 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.21 log(2a) + 1 ... ... 0.11
log(a/b)
0.04 ... ... 85
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 97.30 9.40 0.78 0.22 0.25 39 85
[J2000]
7 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.22 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 99.60 ... ... ... ... ... ...
8 r (SDSS Isophotal)
2007SDSS6.C...0000:
39.97 (a) arcsec 29.51 arcsec ... ... ... ... 84.0
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 79.93 ... 0.74 0.26 0.29 42 84
[J2000]
9 r (SDSS Petrosian)
2007SDSS6.C...0000:
11.94 (a) arcsec ... ... ... 0.415 ... ... ... ... 4.77E+14 23.88 0.83 ... ... ... ... ...
10 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
8.0583 (a) arcsec ... ... 0.836 (b/a) 0.046 ... ... 88.9
[J2000]
... 4.77E+14 16.12 0.09 0.84 0.16 0.18 33 89
[J2000]
11 r (SDSS Exponential)
2007SDSS6.C...0000:
5.3855 (a) arcsec ... ... 0.760 (b/a) 0.018 ... ... 90.1
[J2000]
... 4.77E+14 10.77 0.04 0.76 0.24 0.27 41 90
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 06790                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.70       arcmin                   2a = 102.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  1.30      arcmin              2b = 78.00 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]      :  85    deg [B1950]                  85 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          : 114642.         +262400.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11491874+2607175 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 21.2 arcsec 2a = 42.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 28.83 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.680 b/a = 0.68 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.32 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.37 Uncertainty : ... ... Cos-1(b/a) : ... 47 deg Position Angle [Equinox] : -45 deg [J2000] 135 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 : 177.328125 26.121557 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11491874+2607175 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 35.2 arcsec 2a = 70.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 47.87 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.680 b/a = 0.68 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.32 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.37 Uncertainty : ... ... Cos-1(b/a) : ... 47 deg Position Angle [Equinox] : -45 deg [J2000] 135 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 : 177.328125 26.121557 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +04-28-055 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.90 arcmin 2a = 54.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.60 arcmin 2b = 36.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.67 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.33 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.38 Uncertainty : ... ... Cos-1(b/a) : ... 48 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 : 114636 +2622 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +04-28-055 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.50 arcmin 2a = 90.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.30 arcmin 2b = 78.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 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 : 114636 +2622 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06790 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.21 2a = 97.30 arcsec Uncertainty : 0.04 9.40 arcsec Minor Axis (2b) : ... 2b = 75.50 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.11 b/a = 0.78 Uncertainty : 0.04 0.07 Ellipticity : ... 1 - b/a = 0.22 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.25 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : 85 deg [J2000] 85 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 : 114918.9 +260722. (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 06790 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.22 2a = 99.60 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 : 114918.9 +260722. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J114918.75+260717.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 39.97 arcsec 2a = 79.93 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 29.51 arcsec 2b = 59.01 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.74 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.26 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.29 Uncertainty : ... ... Cos-1(b/a) : ... 42 deg Position Angle [Equinox] : 84.0 deg [J2000] 84 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 : 177.3281575067 26.1215984882 (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 J114918.75+260717.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 11.94 arcsec 2a = 23.88 arcsec Uncertainty : 0.415 arcsec 0.83 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 : 177.3281575067 26.1215984882 (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 J114918.75+260717.7 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 8.0583 arcsec 2a = 16.12 arcsec Uncertainty : 0.046 arcsec 0.09 arcsec Minor Axis (2b) : ... 2b = 13.47 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.836 b/a = 0.84 Uncertainty : 0.005 0.01 Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 33 deg Position Angle [Equinox] : 88.9 deg [J2000] 89 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 : 177.3281575067 26.1215984882 (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 J114918.75+260717.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 5.3855 arcsec 2a = 10.77 arcsec Uncertainty : 0.018 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 8.19 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.760 b/a = 0.76 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.24 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.27 Uncertainty : ... ... Cos-1(b/a) : ... 41 deg Position Angle [Equinox] : 90.1 deg [J2000] 90 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 : 177.3281575067 26.1215984882 (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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