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Date and Time of the Query: 2018-12-10 T02:28:38 PST
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Diameter data point(s) for object NGC 5181

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.......:
21.8 (a) arcsec ... ... 0.900 (b/a) ... ... ... -5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 43.60 ... 0.90 0.10 0.10 26 175
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
35.1 (a) arcsec ... ... 0.900 (b/a) ... ... ... -5
[J2000]
Diameter for "total" magnitude 1.38E+14 70.30 ... 0.90 0.10 0.10 26 175
[J2000]
3 POSS1 103a-O
1963MCG3..C...0000V
0.25 arcmin 0.25 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 15.00 ... 1.00 0.00 0.00 0 ...
4 r (SDSS Isophotal)
2007SDSS6.C...0000:
37.25 (a) arcsec 31.45 arcsec ... ... ... ... 39.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 74.51 ... 0.84 0.16 0.17 32 40
[J2000]
5 r (SDSS Petrosian)
2007SDSS6.C...0000:
8.24 (a) arcsec ... ... ... 0.123 ... ... ... ... 4.77E+14 16.48 0.25 ... ... ... ... ...
6 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
4.0557 (a) arcsec ... ... 0.840 (b/a) 0.017 ... ... 30.9
[J2000]
... 4.77E+14 8.11 0.03 0.84 0.16 0.17 33 31
[J2000]
7 r (SDSS Exponential)
2007SDSS6.C...0000:
2.8532 (a) arcsec ... ... 0.830 (b/a) 0.009 ... ... 27.9
[J2000]
... 4.77E+14 5.71 0.02 0.83 0.17 0.18 34 28
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J13294202+1318144       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 21.8       arcsec               2a = 43.60 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 39.24 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.900                         b/a = 0.90
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.10
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.10
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 26 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          : 202.425079      13.304034    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13294202+1318144 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 35.1 arcsec 2a = 70.30 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 63.27 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.900 b/a = 0.90 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.10 Uncertainty : ... ... Cos-1(b/a) : ... 26 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 : 202.425079 13.304034 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +02-34-024 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.25 arcmin 2a = 15.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 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 : 132712 +1334 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J132942.00+131814.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 37.25 arcsec 2a = 74.51 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 31.45 arcsec 2b = 62.91 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.84 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.17 Uncertainty : ... ... Cos-1(b/a) : ... 32 deg Position Angle [Equinox] : 39.8 deg [J2000] 40 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 : 202.4250139835 13.3041062557 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J132942.00+131814.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 8.24 arcsec 2a = 16.48 arcsec Uncertainty : 0.123 arcsec 0.25 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 : 202.4250139835 13.3041062557 (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 J132942.00+131814.7 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 4.0557 arcsec 2a = 8.11 arcsec Uncertainty : 0.017 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 6.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.840 b/a = 0.84 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.17 Uncertainty : ... ... Cos-1(b/a) : ... 33 deg Position Angle [Equinox] : 30.9 deg [J2000] 31 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 : 202.4250139835 13.3041062557 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J132942.00+131814.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.8532 arcsec 2a = 5.71 arcsec Uncertainty : 0.009 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 4.74 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.830 b/a = 0.83 Uncertainty : 0.003 0.00 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] : 27.9 deg [J2000] 28 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 : 202.4250139835 13.3041062557 (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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