NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-02-18 T00:47:31 PST
Help | Comment | NED Home

Diameter data point(s) for object NGC 4927

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.......:
21.1 (a) arcsec ... ... 0.720 (b/a) ... ... ... 5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 42.20 ... 0.72 0.28 0.32 44 5
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
33.8 (a) arcsec ... ... 0.720 (b/a) ... ... ... 5
[J2000]
Diameter for "total" magnitude 1.38E+14 67.70 ... 0.72 0.28 0.32 44 5
[J2000]
3 POSS1 103a-O
1964MCG2..C...0000V
0.40 arcmin 0.25 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 24.00 ... 0.62 0.38 0.44 51 ...
4 r (SDSS Isophotal)
2007SDSS6.C...0000:
31.06 (a) arcsec 25.24 arcsec ... ... ... ... 8.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 62.11 ... 0.81 0.19 0.20 36 8
[J2000]
5 r (SDSS Petrosian)
2007SDSS6.C...0000:
5.71 (a) arcsec ... ... ... 0.143 ... ... ... ... 4.77E+14 11.42 0.29 ... ... ... ... ...
6 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
3.3781 (a) arcsec ... ... 0.756 (b/a) 0.017 ... ... 12.3
[J2000]
... 4.77E+14 6.76 0.03 0.76 0.24 0.27 41 12
[J2000]
7 r (SDSS Exponential)
2007SDSS6.C...0000:
2.3335 (a) arcsec ... ... 0.757 (b/a) 0.008 ... ... 13.2
[J2000]
... 4.77E+14 4.67 0.01 0.76 0.24 0.27 41 13
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J13015756+2800209       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 21.1       arcsec               2a = 42.20 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 30.38 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.720                         b/a = 0.72
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.28
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.32
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 44 deg
Position Angle [Equinox]      :    5   deg [J2000]                  5 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          : 195.489929      28.005831    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13015756+2800209 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 33.8 arcsec 2a = 67.70 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 48.74 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.720 b/a = 0.72 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.28 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 5 deg [J2000] 5 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 : 195.489929 28.005831 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +05-31-104 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.40 arcmin 2a = 24.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.62 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.44 Uncertainty : ... ... Cos-1(b/a) : ... 51 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 : 125936 +2816 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J130157.57+280021.0 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 31.06 arcsec 2a = 62.11 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 25.24 arcsec 2b = 50.47 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.81 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.19 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.20 Uncertainty : ... ... Cos-1(b/a) : ... 36 deg Position Angle [Equinox] : 8.1 deg [J2000] 8 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 : 195.4899000625 28.0058439222 (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 J130157.57+280021.0 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.71 arcsec 2a = 11.42 arcsec Uncertainty : 0.143 arcsec 0.29 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 : 195.4899000625 28.0058439222 (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 J130157.57+280021.0 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 3.3781 arcsec 2a = 6.76 arcsec Uncertainty : 0.017 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 5.11 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.756 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] : 12.3 deg [J2000] 12 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 : 195.4899000625 28.0058439222 (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 J130157.57+280021.0 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.3335 arcsec 2a = 4.67 arcsec Uncertainty : 0.008 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 3.53 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.757 b/a = 0.76 Uncertainty : 0.003 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] : 13.2 deg [J2000] 13 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 : 195.4899000625 28.0058439222 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius

Back to NED Home