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Date and Time of the Query: 2019-03-19 T14:27:37 PDT
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Diameter data point(s) for object NGC 3159

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.......:
20.1 (a) arcsec ... ... 0.720 (b/a) ... ... ... -30
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 40.20 ... 0.72 0.28 0.32 44 150
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
36.9 (a) arcsec ... ... 0.720 (b/a) ... ... ... -30
[J2000]
Diameter for "total" magnitude 1.38E+14 73.80 ... 0.72 0.28 0.32 44 150
[J2000]
3 POSS1 103a-O
1964MCG2..C...0000V
0.35 arcmin 0.25 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 21.00 ... 0.71 0.29 0.32 44 ...
4 POSS1 103a-O
1964MCG2..C...0000V
0.80 arcmin 0.80 arcmin ... ... ... ... ... Very low surface brightness 7.40E+14 48.00 ... 1.00 0.00 0.00 0 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.32 log(2a) + 1 ... ... 0.00
log(a/b)
0.08 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 125.40 25.40 1.00 0.00 0.00 0 ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.32 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 125.40 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2005SDSS4.C...0000:
34.45 (a) arcsec 26.07 arcsec ... ... ... ... 158.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 68.90 ... 0.76 0.24 0.27 41 159
[J2000]
8 r (SDSS Petrosian)
2005SDSS4.C...0000:
4.81 (a) arcsec ... ... ... 0.16 ... ... ... ... 4.77E+14 9.63 0.31 ... ... ... ... ...
9 r (SDSS de Vaucouleurs)
2005SDSS4.C...0000:
2.59 (a) arcsec ... ... 0.762 (b/a) 0.01 ... ... 149.2
[J2000]
... 4.77E+14 5.19 0.02 0.76 0.24 0.27 40 149
[J2000]
10 r (SDSS Exponential)
2005SDSS4.C...0000:
1.94 (a) arcsec ... ... 0.812 (b/a) 0.01 ... ... 147.0
[J2000]
... 4.77E+14 3.87 0.01 0.81 0.19 0.21 36 147
[J2000]
11 r (SDSS Isophotal)
2007SDSS6.C...0000:
34.45 (a) arcsec 26.07 arcsec ... ... ... ... 158.8
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 68.91 ... 0.76 0.24 0.27 41 159
[J2000]
12 r (SDSS Petrosian)
2007SDSS6.C...0000:
4.81 (a) arcsec ... ... ... 0.156 ... ... ... ... 4.77E+14 9.63 0.31 ... ... ... ... ...
13 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.5939 (a) arcsec ... ... 0.762 (b/a) 0.011 ... ... 149.2
[J2000]
... 4.77E+14 5.19 0.02 0.76 0.24 0.27 40 149
[J2000]
14 r (SDSS Exponential)
2007SDSS6.C...0000:
1.9352 (a) arcsec ... ... 0.812 (b/a) 0.007 ... ... 147.0
[J2000]
... 4.77E+14 3.87 0.01 0.81 0.19 0.21 36 147
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J10135280+3839166       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 20.1       arcsec               2a = 40.20 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 28.94 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]      :  -30   deg [J2000]                  150 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          : 153.470093      38.654549    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J10135280+3839166 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 36.9 arcsec 2a = 73.80 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 53.14 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] : -30 deg [J2000] 150 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 : 153.470093 38.654549 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +07-21-021 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.35 arcmin 2a = 21.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 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 : 101054 +3853 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +07-21-021 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.80 arcmin 2a = 48.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.80 arcmin 2b = 48.00 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 low 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 : 101054 +3853 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +07-21-021 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.32 2a = 125.40 arcsec Uncertainty : 0.08 25.40 arcsec Minor Axis (2b) : ... 2b = 125.40 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.00 b/a = 1.00 Uncertainty : 0.06 0.15 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 : 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 : 101353.2 +383912. (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 +07-21-021 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.32 2a = 125.40 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 : 101353.2 +383912. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2005SDSS4.C...0000: Published Object Name : SDSS J101352.84+383916.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 34.45 arcsec 2a = 68.90 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 26.07 arcsec 2b = 52.14 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.76 Uncertainty : ... ... 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] : 158.8 deg [J2000] 159 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 : 153.4701538 38.6544762 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J101352.84+383916.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.81 arcsec 2a = 9.63 arcsec Uncertainty : 0.16 arcsec 0.31 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 : 153.4701538 38.6544762 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J101352.84+383916.1 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 2.59 arcsec 2a = 5.19 arcsec Uncertainty : 0.01 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 3.95 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.762 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) : ... 40 deg Position Angle [Equinox] : 149.2 deg [J2000] 149 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 : 153.4701538 38.6544762 (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 : 2005SDSS4.C...0000: Published Object Name : SDSS J101352.84+383916.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.94 arcsec 2a = 3.87 arcsec Uncertainty : 0.01 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 3.14 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.812 b/a = 0.81 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.19 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.21 Uncertainty : ... ... Cos-1(b/a) : ... 36 deg Position Angle [Equinox] : 147.0 deg [J2000] 147 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 : 153.4701538 38.6544762 (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 J101352.83+383916.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 34.45 arcsec 2a = 68.91 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 26.07 arcsec 2b = 52.14 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.76 Uncertainty : ... ... 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] : 158.8 deg [J2000] 159 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 : 153.4701421230 38.6544741723 (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 J101352.83+383916.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.81 arcsec 2a = 9.63 arcsec Uncertainty : 0.156 arcsec 0.31 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 : 153.4701421230 38.6544741723 (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 J101352.83+383916.1 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.5939 arcsec 2a = 5.19 arcsec Uncertainty : 0.011 arcsec 0.02 arcsec Minor Axis (2b) : ... 2b = 3.95 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.762 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) : ... 40 deg Position Angle [Equinox] : 149.2 deg [J2000] 149 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 : 153.4701421230 38.6544741723 (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 J101352.83+383916.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.9352 arcsec 2a = 3.87 arcsec Uncertainty : 0.007 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 3.14 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.812 b/a = 0.81 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.19 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.21 Uncertainty : ... ... Cos-1(b/a) : ... 36 deg Position Angle [Equinox] : 147.0 deg [J2000] 147 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 : 153.4701421230 38.6544741723 (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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