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Date and Time of the Query: 2019-04-20 T05:51:02 PDT
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Diameter data point(s) for object NGC 3665

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
3.50 arcmin 3.00 arcmin ... ... ... ... 30
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 210.00 ... 0.86 0.14 0.15 31 30
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
72.3 (a) arcsec ... ... 0.760 (b/a) ... ... ... 25
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 144.60 ... 0.76 0.24 0.27 41 25
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
100.4 (a) arcsec ... ... 0.760 (b/a) ... ... ... 25
[J2000]
Diameter for "total" magnitude 1.38E+14 200.80 ... 0.76 0.24 0.27 41 25
[J2000]
4 POSS1 103a-O
1964MCG2..C...0000V
1.30 arcmin 1.00 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 78.00 ... 0.77 0.23 0.26 40 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.39 log(2a) + 1 ... ... 0.08
log(a/b)
0.04 ... ... 30
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 147.30 14.20 0.83 0.17 0.18 34 30
[J2000]
6 RC3 A_e (Johnson B)
1991RC3.9.C...0000d
0.98 log(2a) + 1 ... ... ... 0.04 ... ... ... ... 6.81E+14 57.30 5.50 ... ... ... ... ...
7 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.38 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 143.90 ... ... ... ... ... ...
8 r (SDSS Isophotal)
2007SDSS6.C...0000:
87.73 (a) arcsec 48.48 arcsec ... ... ... ... 63.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 175.47 ... 0.55 0.45 0.53 56 64
[J2000]
9 r (SDSS Petrosian)
2007SDSS6.C...0000:
13.32 (a) arcsec ... ... ... 0.123 ... ... ... ... 4.77E+14 26.64 0.25 ... ... ... ... ...
10 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
8.9444 (a) arcsec ... ... 0.621 (b/a) 0.043 ... ... 45.8
[J2000]
... 4.77E+14 17.89 0.09 0.62 0.38 0.44 52 46
[J2000]
11 r (SDSS Exponential)
2007SDSS6.C...0000:
5.7100 (a) arcsec ... ... 0.809 (b/a) 0.016 ... ... 41.1
[J2000]
... 4.77E+14 11.42 0.03 0.81 0.19 0.21 36 41
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 06426                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 3.50       arcmin                   2a = 210.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  3.00      arcmin              2b = 180.00 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]      :  30    deg [B1950]                  30 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          : 112200.         +390200.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Diameters flagged uncertain.            

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11244363+3845460 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 72.3 arcsec 2a = 144.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 109.90 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.760 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] : 25 deg [J2000] 25 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 : 171.181824 38.762783 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11244363+3845460 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 100.4 arcsec 2a = 200.80 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 152.61 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.760 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] : 25 deg [J2000] 25 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 : 171.181824 38.762783 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +07-24-003 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.30 arcmin 2a = 78.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.00 arcmin 2b = 60.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.77 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.23 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.26 Uncertainty : ... ... Cos-1(b/a) : ... 40 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 : 112200 +3902 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06426 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.39 2a = 147.30 arcsec Uncertainty : 0.04 14.20 arcsec Minor Axis (2b) : ... 2b = 122.55 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.08 b/a = 0.83 Uncertainty : 0.04 0.08 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] : 30 deg [J2000] 30 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 : 112443.3 +384547. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06426 Frequency Targeted : RC3 A_e (Johnson B) Major Axis (2a) : log(2a) + 1 = 0.98 2a = 57.30 arcsec Uncertainty : 0.04 5.50 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 : 112443.3 +384547. (J2000) Qualifiers : From new, raw data NED Comment : From magnitude-aperture curves.
No. 7 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06426 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.38 2a = 143.90 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 : 112443.3 +384547. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J112443.66+384546.0 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 87.73 arcsec 2a = 175.47 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 48.48 arcsec 2b = 96.96 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.55 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.45 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.53 Uncertainty : ... ... Cos-1(b/a) : ... 56 deg Position Angle [Equinox] : 63.5 deg [J2000] 64 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 : 171.1819521174 38.7627894484 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J112443.66+384546.0 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 13.32 arcsec 2a = 26.64 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 : 171.1819521174 38.7627894484 (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 J112443.66+384546.0 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 8.9444 arcsec 2a = 17.89 arcsec Uncertainty : 0.043 arcsec 0.09 arcsec Minor Axis (2b) : ... 2b = 11.11 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.621 b/a = 0.62 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.44 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 45.8 deg [J2000] 46 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 : 171.1819521174 38.7627894484 (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 J112443.66+384546.0 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 5.7100 arcsec 2a = 11.42 arcsec Uncertainty : 0.016 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 9.24 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.809 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] : 41.1 deg [J2000] 41 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 : 171.1819521174 38.7627894484 (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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