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Date and Time of the Query: 2019-03-20 T06:11:36 PDT
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Diameter data point(s) for object NGC 3817 NED03

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 r (SDSS Isophotal)
2004SDSS3.C...0000:
13.60 (a) arcsec 7.97 arcsec ... ... ... ... 155.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 27.20 ... 0.59 0.41 0.49 54 156
[J2000]
2 r (SDSS Petrosian)
2004SDSS3.C...0000:
5.95 (a) arcsec ... ... ... 1.52 ... ... ... ... 4.77E+14 11.90 3.04 ... ... ... ... ...
3 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
6.13 (a) arcsec ... ... 0.552 (b/a) 0.18 ... ... 169.3
[J2000]
... 4.77E+14 12.25 0.35 0.55 0.45 0.53 56 169
[J2000]
4 r (SDSS Exponential)
2004SDSS3.C...0000:
1.94 (a) arcsec ... ... 0.579 (b/a) 0.04 ... ... 172.5
[J2000]
... 4.77E+14 3.88 0.08 0.58 0.42 0.50 55 173
[J2000]
5 r (SDSS Isophotal)
2007SDSS6.C...0000:
13.60 (a) arcsec 7.97 arcsec ... ... ... ... 155.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 27.20 ... 0.59 0.41 0.49 54 156
[J2000]
6 r (SDSS Petrosian)
2007SDSS6.C...0000:
5.95 (a) arcsec ... ... ... 1.520 ... ... ... ... 4.77E+14 11.90 3.04 ... ... ... ... ...
7 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
6.1272 (a) arcsec ... ... 0.552 (b/a) 0.177 ... ... 169.3
[J2000]
... 4.77E+14 12.25 0.35 0.55 0.45 0.53 56 169
[J2000]
8 r (SDSS Exponential)
2007SDSS6.C...0000:
1.9414 (a) arcsec ... ... 0.579 (b/a) 0.038 ... ... 172.5
[J2000]
... 4.77E+14 3.88 0.08 0.58 0.42 0.50 55 173
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2004SDSS3.C...0000:
Published Object Name         : SDSS J114154.50+101819.1      
Frequency Targeted            : r (SDSS Isophotal)            
Major Axis (2a)               : a = 13.60      arcsec               2a = 27.20 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : b =    7.97    arcsec               2b = 15.94 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.59
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.41
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.49
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 54 deg
Position Angle [Equinox]      :  155.5 deg [J2000]                  156 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          : 175.4770966     10.3053179    (J2000)
Qualifiers                    : From new, raw data; DIA_MAJ or DIA_MIN modified from
                               published data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J114154.50+101819.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.95 arcsec 2a = 11.90 arcsec Uncertainty : 1.52 arcsec 3.04 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 : 175.4770966 10.3053179 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J114154.50+101819.1 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 6.13 arcsec 2a = 12.25 arcsec Uncertainty : 0.18 arcsec 0.35 arcsec Minor Axis (2b) : ... 2b = 6.76 arcsec Uncertainty : ... 0.01 Axis Ratio : b/a = 0.552 b/a = 0.55 Uncertainty : 0.016 0.02 Ellipticity : ... 1 - b/a = 0.45 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.53 Uncertainty : ... ... Cos-1(b/a) : ... 56 deg Position Angle [Equinox] : 169.3 deg [J2000] 169 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 : 175.4770966 10.3053179 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 4 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J114154.50+101819.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.94 arcsec 2a = 3.88 arcsec Uncertainty : 0.04 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 2.25 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.579 b/a = 0.58 Uncertainty : 0.015 0.01 Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.50 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 172.5 deg [J2000] 173 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 : 175.4770966 10.3053179 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 5 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J114154.50+101819.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 13.60 arcsec 2a = 27.20 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 7.97 arcsec 2b = 15.94 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.59 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.41 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.49 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : 155.5 deg [J2000] 156 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 : 175.4770999144 10.3053171272 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J114154.50+101819.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.95 arcsec 2a = 11.90 arcsec Uncertainty : 1.520 arcsec 3.04 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 : 175.4770999144 10.3053171272 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J114154.50+101819.1 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 6.1272 arcsec 2a = 12.25 arcsec Uncertainty : 0.177 arcsec 0.35 arcsec Minor Axis (2b) : ... 2b = 6.76 arcsec Uncertainty : ... 0.01 Axis Ratio : b/a = 0.552 b/a = 0.55 Uncertainty : 0.016 0.02 Ellipticity : ... 1 - b/a = 0.45 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.53 Uncertainty : ... ... Cos-1(b/a) : ... 56 deg Position Angle [Equinox] : 169.3 deg [J2000] 169 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 : 175.4770999144 10.3053171272 (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 J114154.50+101819.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.9414 arcsec 2a = 3.88 arcsec Uncertainty : 0.038 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 2.25 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.579 b/a = 0.58 Uncertainty : 0.015 0.01 Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.50 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 172.5 deg [J2000] 173 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 : 175.4770999144 10.3053171272 (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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