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Date and Time of the Query: 2019-06-19 T06:44:13 PDT
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Diameter data point(s) for object NGC 3580

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.......:
25.0 (a) arcsec ... ... 0.340 (b/a) ... ... ... -5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 50.00 ... 0.34 0.66 0.79 70 175
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
38.8 (a) arcsec ... ... 0.340 (b/a) ... ... ... -5
[J2000]
Diameter for "total" magnitude 1.38E+14 77.60 ... 0.34 0.66 0.79 70 175
[J2000]
3 POSS1 103a-O
1963MCG3..C...0000V
0.40 arcmin 0.20 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 24.00 ... 0.50 0.50 0.60 60 ...
4 POSS1 103a-O
1963MCG3..C...0000V
0.80 arcmin 0.25 arcmin ... ... ... ... ... High surface brightness 7.40E+14 48.00 ... 0.31 0.69 0.82 72 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
0.94 log(2a) + 1 ... ... 0.47
log(a/b)
0.11 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 52.30 15.10 0.34 0.66 0.79 70 ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
0.88 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 45.50 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2004SDSS2.C...0000:
34.59 (a) arcsec 14.20 arcsec ... ... ... ... 174.2
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 69.19 ... 0.41 0.59 0.71 66 174
[J2000]
8 r (SDSS Petrosian)
2004SDSS2.C...0000:
4.15 (a) arcsec ... ... ... 0.76 ... ... ... ... 4.77E+14 8.29 1.52 ... ... ... ... ...
9 r (SDSS de Vaucouleurs)
2004SDSS2.C...0000:
2.55 (a) arcsec ... ... 0.436 (b/a) 0.01 ... ... 176.2
[J2000]
... 4.77E+14 5.11 0.02 0.44 0.56 0.68 64 176
[J2000]
10 r (SDSS Exponential)
2004SDSS2.C...0000:
1.55 (a) arcsec ... ... 0.531 (b/a) 0.01 ... ... 175.0
[J2000]
... 4.77E+14 3.10 0.01 0.53 0.47 0.56 58 175
[J2000]
11 r (SDSS Isophotal)
2007SDSS6.C...0000:
34.59 (a) arcsec 14.20 arcsec ... ... ... ... 174.2
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 69.19 ... 0.41 0.59 0.71 66 174
[J2000]
12 r (SDSS Petrosian)
2007SDSS6.C...0000:
4.15 (a) arcsec ... ... ... 0.760 ... ... ... ... 4.77E+14 8.29 1.52 ... ... ... ... ...
13 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.5526 (a) arcsec ... ... 0.436 (b/a) 0.012 ... ... 176.2
[J2000]
... 4.77E+14 5.11 0.02 0.44 0.56 0.68 64 176
[J2000]
14 r (SDSS Exponential)
2007SDSS6.C...0000:
1.5506 (a) arcsec ... ... 0.531 (b/a) 0.007 ... ... 175.0
[J2000]
... 4.77E+14 3.10 0.01 0.53 0.47 0.56 58 175
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J11131591+0339265       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 25.0       arcsec               2a = 50.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 17.00 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.340                         b/a = 0.34
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.66
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.79
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 70 deg
Position Angle [Equinox]      :   -5   deg [J2000]                  175 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          : 168.316345      3.657364    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11131591+0339265 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 38.8 arcsec 2a = 77.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 26.38 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.340 b/a = 0.34 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.66 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : -5 deg [J2000] 175 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 : 168.316345 3.657364 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +01-29-018 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.40 arcmin 2a = 24.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.20 arcmin 2b = 12.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.50 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.50 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.60 Uncertainty : ... ... Cos-1(b/a) : ... 60 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 : 111042 +0356 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +01-29-018 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.80 arcmin 2a = 48.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.31 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.69 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.82 Uncertainty : ... ... Cos-1(b/a) : ... 72 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 : 111042 +0356 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +01-29-018 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 0.94 2a = 52.30 arcsec Uncertainty : 0.11 15.10 arcsec Minor Axis (2b) : ... 2b = 17.73 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.47 b/a = 0.34 Uncertainty : 0.07 0.06 Ellipticity : ... 1 - b/a = 0.66 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.79 Uncertainty : ... ... Cos-1(b/a) : ... 70 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 : 111312.0 +033900. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +01-29-018 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 0.88 2a = 45.50 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 : 111312.0 +033900. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J111315.92+033926.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 34.59 arcsec 2a = 69.19 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.20 arcsec 2b = 28.40 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.41 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.59 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.71 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 174.2 deg [J2000] 174 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 : 168.3163452 3.6573291 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J111315.92+033926.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.15 arcsec 2a = 8.29 arcsec Uncertainty : 0.76 arcsec 1.52 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 : 168.3163452 3.6573291 (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 : 2004SDSS2.C...0000: Published Object Name : SDSS J111315.92+033926.4 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 2.55 arcsec 2a = 5.11 arcsec Uncertainty : 0.01 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.23 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.436 b/a = 0.44 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.56 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.68 Uncertainty : ... ... Cos-1(b/a) : ... 64 deg Position Angle [Equinox] : 176.2 deg [J2000] 176 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 : 168.3163452 3.6573291 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 10 Published Units: Homogenized Units: Reference Code : 2004SDSS2.C...0000: Published Object Name : SDSS J111315.92+033926.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.55 arcsec 2a = 3.10 arcsec Uncertainty : 0.01 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.65 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.531 b/a = 0.53 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.47 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.56 Uncertainty : ... ... Cos-1(b/a) : ... 58 deg Position Angle [Equinox] : 175.0 deg [J2000] 175 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 : 168.3163452 3.6573291 (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 J111315.92+033926.3 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 34.59 arcsec 2a = 69.19 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 14.20 arcsec 2b = 28.40 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.41 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.59 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.71 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 174.2 deg [J2000] 174 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 : 168.3163577521 3.6573291646 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J111315.92+033926.3 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.15 arcsec 2a = 8.29 arcsec Uncertainty : 0.760 arcsec 1.52 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 : 168.3163577521 3.6573291646 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 13 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J111315.92+033926.3 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.5526 arcsec 2a = 5.11 arcsec Uncertainty : 0.012 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.23 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.436 b/a = 0.44 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.56 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.68 Uncertainty : ... ... Cos-1(b/a) : ... 64 deg Position Angle [Equinox] : 176.2 deg [J2000] 176 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 : 168.3163577521 3.6573291646 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 14 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J111315.92+033926.3 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.5506 arcsec 2a = 3.10 arcsec Uncertainty : 0.007 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 1.65 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.531 b/a = 0.53 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.47 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.56 Uncertainty : ... ... Cos-1(b/a) : ... 58 deg Position Angle [Equinox] : 175.0 deg [J2000] 175 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 : 168.3163577521 3.6573291646 (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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