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Date and Time of the Query: 2019-08-25 T07:25:38 PDT
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Diameter data point(s) for object NGC 3486

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 POSS1 103a-O
1973UGC...C...0000N
7.20 arcmin 5.10 arcmin ... ... ... ... 80
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 432.00 ... 0.71 0.29 0.33 45 80
[J2000]
2 POSS1 103a-O
1964MCG2..C...0000V
1.20 arcmin 1.00 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 72.00 ... 0.83 0.17 0.18 34 ...
3 POSS1 103a-O
1964MCG2..C...0000V
7.00 arcmin 5.00 arcmin ... ... ... ... ... Moderate surface brightness 7.40E+14 420.00 ... 0.71 0.29 0.32 44 ...
4 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.85 log(2a) + 1 ... ... 0.13
log(a/b)
0.01 ... ... 80
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 424.80 9.90 0.74 0.26 0.29 42 80
[J2000]
5 RC3 A_e (Johnson B)
1991RC3.9.C...0000d
1.32 log(2a) + 1 ... ... ... 0.02 ... ... ... ... 6.81E+14 125.40 5.90 ... ... ... ... ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.85 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 424.80 ... ... ... ... ... ...
7 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
64.5 (a) arcsec ... ... 0.810 (b/a) ... ... ... 82.5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 129.00 ... 0.81 0.19 0.21 36 83
[J2000]
8 K_s (LGA/2MASS "total")
2003AJ....125..525J
145.1 (a) arcsec ... ... 0.810 (b/a) ... ... ... 82.5
[J2000]
Diameter for "total" magnitude 1.38E+14 290.20 ... 0.81 0.19 0.21 36 83
[J2000]
9 r (SDSS Isophotal)
2007SDSS6.C...0000:
39.69 (a) arcsec 37.29 arcsec ... ... ... ... 7.9
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 79.39 ... 0.94 0.06 0.06 20 8
[J2000]
10 r (SDSS Petrosian)
2007SDSS6.C...0000:
12.73 (a) arcsec ... ... ... 0.100 ... ... ... ... 4.77E+14 25.47 0.20 ... ... ... ... ...
11 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
7.2725 (a) arcsec ... ... 0.857 (b/a) 0.039 ... ... 73.6
[J2000]
... 4.77E+14 14.54 0.08 0.86 0.14 0.15 31 74
[J2000]
12 r (SDSS Exponential)
2007SDSS6.C...0000:
5.4451 (a) arcsec ... ... 0.825 (b/a) 0.013 ... ... 76.0
[J2000]
... 4.77E+14 10.89 0.03 0.82 0.18 0.19 34 76
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 06079                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 7.20       arcmin                   2a = 432.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  5.10      arcmin              2b = 306.00 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] = 0.33
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 45 deg
Position Angle [Equinox]      :  80    deg [B1950]                  80 deg [J2000]
Uncertainty                   : ...                                 ...
Significance                  : No uncertainty reported
Diameter Reference Level      : About 25.0 B-mag arcsec^-2^   
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          : 105736.         +291500.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +05-26-032 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.20 arcmin 2a = 72.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.00 arcmin 2b = 60.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.83 Uncertainty : ... ... 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] : ... ... 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 : 105742 +2914 (B1950) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +05-26-032 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 7.00 arcmin 2a = 420.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 5.00 arcmin 2b = 300.00 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 : Moderate 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 : 105742 +2914 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06079 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.85 2a = 424.80 arcsec Uncertainty : 0.01 9.90 arcsec Minor Axis (2b) : ... 2b = 314.78 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.13 b/a = 0.74 Uncertainty : 0.02 0.04 Ellipticity : ... 1 - b/a = 0.26 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.29 Uncertainty : ... ... Cos-1(b/a) : ... 42 deg Position Angle [Equinox] : 80 deg [J2000] 80 deg [J2000] 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 : 110023.6 +285833. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06079 Frequency Targeted : RC3 A_e (Johnson B) Major Axis (2a) : log(2a) + 1 = 1.32 2a = 125.40 arcsec Uncertainty : 0.02 5.90 arcsec Minor Axis (2b) : ... ... Uncertainty : ... ... Axis Ratio : ... ... Uncertainty : ... ... Ellipticity : ... ... Uncertainty : ... ... Eccentricity : ... ... Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : Mean error Diameter Reference Level : ... 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 : 110023.6 +285833. (J2000) Qualifiers : From new, raw data NED Comment : From magnitude-aperture curves.
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06079 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.85 2a = 424.80 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 : 110023.6 +285833. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3486 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 64.5 arcsec 2a = 129.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 104.49 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.810 b/a = 0.81 Uncertainty : ... ... 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] : 82.5 deg [J2000] 83 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 : 165.099777 28.974819 (J2000) Qualifiers : From new, raw data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3486 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 145.1 arcsec 2a = 290.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 235.06 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.810 b/a = 0.81 Uncertainty : ... ... 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] : 82.5 deg [J2000] 83 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 : 165.099777 28.974819 (J2000) Qualifiers : From new, raw data NED Comment :
No. 9 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J110023.86+285830.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 39.69 arcsec 2a = 79.39 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 37.29 arcsec 2b = 74.59 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.94 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.06 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.06 Uncertainty : ... ... Cos-1(b/a) : ... 20 deg Position Angle [Equinox] : 7.9 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 : 165.0994522335 28.9751370699 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 10 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J110023.86+285830.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 12.73 arcsec 2a = 25.47 arcsec Uncertainty : 0.100 arcsec 0.20 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 : 165.0994522335 28.9751370699 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 11 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J110023.86+285830.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 7.2725 arcsec 2a = 14.54 arcsec Uncertainty : 0.039 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 12.47 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.857 b/a = 0.86 Uncertainty : 0.004 0.00 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] : 73.6 deg [J2000] 74 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 : 165.0994522335 28.9751370699 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J110023.86+285830.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 5.4451 arcsec 2a = 10.89 arcsec Uncertainty : 0.013 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 8.98 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.825 b/a = 0.82 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 76.0 deg [J2000] 76 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 : 165.0994522335 28.9751370699 (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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