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Date and Time of the Query: 2019-04-20 T22:14:37 PDT
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Diameter data point(s) for object NGC 3950

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 K_s (2MASS isophotal)
20032MASX.C.......:
7.4 (a) arcsec ... ... 0.940 (b/a) ... ... ... 45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 14.80 ... 0.94 0.06 0.06 20 45
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
22.2 (a) arcsec ... ... 0.940 (b/a) ... ... ... 45
[J2000]
Diameter for "total" magnitude 1.38E+14 44.40 ... 0.94 0.06 0.06 20 45
[J2000]
3 POSS1 103a-O
1962MCG1..C...0000V
0.15 arcmin 0.15 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 9.00 ... 1.00 0.00 0.00 0 ...
4 r (SDSS Isophotal)
2005SDSS4.C...0000:
15.51 (a) arcsec 12.87 arcsec ... ... ... ... 67.6
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 31.01 ... 0.83 0.17 0.18 34 68
[J2000]
5 r (SDSS Petrosian)
2005SDSS4.C...0000:
3.50 (a) arcsec ... ... ... 0.04 ... ... ... ... 4.77E+14 7.00 0.09 ... ... ... ... ...
6 r (SDSS de Vaucouleurs)
2005SDSS4.C...0000:
1.55 (a) arcsec ... ... 0.874 (b/a) 0.02 ... ... 73.1
[J2000]
... 4.77E+14 3.09 0.04 0.87 0.13 0.13 29 73
[J2000]
7 r (SDSS Exponential)
2005SDSS4.C...0000:
1.12 (a) arcsec ... ... 0.833 (b/a) 0.01 ... ... 74.6
[J2000]
... 4.77E+14 2.24 0.01 0.83 0.17 0.18 34 75
[J2000]
8 r (SDSS Isophotal)
2007SDSS6.C...0000:
15.51 (a) arcsec 12.87 arcsec ... ... ... ... 67.6
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 31.01 ... 0.83 0.17 0.18 34 68
[J2000]
9 r (SDSS Petrosian)
2007SDSS6.C...0000:
3.50 (a) arcsec ... ... ... 0.045 ... ... ... ... 4.77E+14 7.00 0.09 ... ... ... ... ...
10 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
1.5470 (a) arcsec ... ... 0.874 (b/a) 0.018 ... ... 73.1
[J2000]
... 4.77E+14 3.09 0.04 0.87 0.13 0.13 29 73
[J2000]
11 r (SDSS Exponential)
2007SDSS6.C...0000:
1.1217 (a) arcsec ... ... 0.833 (b/a) 0.006 ... ... 74.6
[J2000]
... 4.77E+14 2.24 0.01 0.83 0.17 0.18 34 75
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J11534137+4753052       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 7.4        arcsec               2a = 14.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 13.91 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.940                         b/a = 0.94
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.06
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.06
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 20 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          : 178.422531      47.884666    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11534137+4753052 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 22.2 arcsec 2a = 44.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 41.74 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.940 b/a = 0.94 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.06 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.06 Uncertainty : ... ... Cos-1(b/a) : ... 20 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 : 178.422531 47.884666 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +08-22-030 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.15 arcmin 2a = 9.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.15 arcmin 2b = 9.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 1.00 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.00 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.00 Uncertainty : ... ... Cos-1(b/a) : ... 0 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 : 115106 +4812 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J115341.41+475304.5 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 15.51 arcsec 2a = 31.01 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 12.87 arcsec 2b = 25.73 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 67.6 deg [J2000] 68 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 : 178.4225464 47.8845749 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J115341.41+475304.5 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.50 arcsec 2a = 7.00 arcsec Uncertainty : 0.04 arcsec 0.09 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 : 178.4225464 47.8845749 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J115341.41+475304.5 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 1.55 arcsec 2a = 3.09 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 2.70 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.874 b/a = 0.87 Uncertainty : 0.008 0.01 Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 73.1 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 : 178.4225464 47.8845749 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 7 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J115341.41+475304.5 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.12 arcsec 2a = 2.24 arcsec Uncertainty : 0.01 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.87 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.833 b/a = 0.83 Uncertainty : 0.006 0.01 Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 74.6 deg [J2000] 75 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 : 178.4225464 47.8845749 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J115341.41+475304.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 15.51 arcsec 2a = 31.01 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 12.87 arcsec 2b = 25.73 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 67.6 deg [J2000] 68 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 : 178.4225451686 47.8845721524 (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 J115341.41+475304.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.50 arcsec 2a = 7.00 arcsec Uncertainty : 0.045 arcsec 0.09 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 : 178.4225451686 47.8845721524 (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 J115341.41+475304.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 1.5470 arcsec 2a = 3.09 arcsec Uncertainty : 0.018 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 2.70 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.874 b/a = 0.87 Uncertainty : 0.008 0.01 Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 73.1 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 : 178.4225451686 47.8845721524 (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 J115341.41+475304.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.1217 arcsec 2a = 2.24 arcsec Uncertainty : 0.006 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.87 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.833 b/a = 0.83 Uncertainty : 0.006 0.01 Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 74.6 deg [J2000] 75 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 : 178.4225451686 47.8845721524 (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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