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Date and Time of the Query: 2019-05-26 T09:23:44 PDT
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Diameter data point(s) for object IC 4000

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.......:
7.3 (a) arcsec ... ... 0.840 (b/a) ... ... ... 65
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 14.60 ... 0.84 0.16 0.17 33 65
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
13.7 (a) arcsec ... ... 0.840 (b/a) ... ... ... 65
[J2000]
Diameter for "total" magnitude 1.38E+14 27.40 ... 0.84 0.16 0.17 33 65
[J2000]
3 r (SDSS Isophotal)
2006SDSS5.C...0000:
10.33 (a) arcsec 8.85 arcsec ... ... ... ... 58.6
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 20.66 ... 0.86 0.14 0.15 31 59
[J2000]
4 r (SDSS Petrosian)
2006SDSS5.C...0000:
2.92 (a) arcsec ... ... ... 0.02 ... ... ... ... 4.77E+14 5.85 0.04 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2006SDSS5.C...0000:
2.63 (a) arcsec ... ... 0.913 (b/a) 0.04 ... ... 57.5
[J2000]
... 4.77E+14 5.25 0.08 0.91 0.09 0.09 24 58
[J2000]
6 r (SDSS Exponential)
2006SDSS5.C...0000:
1.41 (a) arcsec ... ... 0.897 (b/a) 0.01 ... ... 56.1
[J2000]
... 4.77E+14 2.83 0.02 0.90 0.10 0.11 26 56
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J12593659+3935159       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 7.3        arcsec               2a = 14.60 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 12.26 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.840                         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)                    : ...                                 33 deg
Position Angle [Equinox]      :   65   deg [J2000]                  65 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          : 194.902573      39.587723    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12593659+3935159 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 13.7 arcsec 2a = 27.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 23.02 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.840 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) : ... 33 deg Position Angle [Equinox] : 65 deg [J2000] 65 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 : 194.902573 39.587723 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2006SDSS5.C...0000: Published Object Name : SDSS J125936.62+393515.9 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 10.33 arcsec 2a = 20.66 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 8.85 arcsec 2b = 17.70 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.86 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.14 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.15 Uncertainty : ... ... Cos-1(b/a) : ... 31 deg Position Angle [Equinox] : 58.6 deg [J2000] 59 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 : 194.9026031 39.5877571 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2006SDSS5.C...0000: Published Object Name : SDSS J125936.62+393515.9 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 2.92 arcsec 2a = 5.85 arcsec Uncertainty : 0.02 arcsec 0.04 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 : 194.9026031 39.5877571 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J125936.62+393515.9 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 2.63 arcsec 2a = 5.25 arcsec Uncertainty : 0.04 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 4.79 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.913 b/a = 0.91 Uncertainty : 0.014 0.01 Ellipticity : ... 1 - b/a = 0.09 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.09 Uncertainty : ... ... Cos-1(b/a) : ... 24 deg Position Angle [Equinox] : 57.5 deg [J2000] 58 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 : 194.9026031 39.5877571 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 6 Published Units: Homogenized Units: Reference Code : 2006SDSS5.C...0000: Published Object Name : SDSS J125936.62+393515.9 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.41 arcsec 2a = 2.83 arcsec Uncertainty : 0.01 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 2.54 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.897 b/a = 0.90 Uncertainty : 0.010 0.01 Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.11 Uncertainty : ... ... Cos-1(b/a) : ... 26 deg Position Angle [Equinox] : 56.1 deg [J2000] 56 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 : 194.9026031 39.5877571 (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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