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Date and Time of the Query: 2019-04-24 T16:57:31 PDT
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Diameter data point(s) for object NGC 3384

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
5.40 arcmin 2.80 arcmin ... ... ... ... 53
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 324.00 ... 0.52 0.48 0.58 59 53
[J2000]
2 POSS1 103a-O
1963MCG3..C...0000V
1.60 arcmin 1.10 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 96.00 ... 0.69 0.31 0.36 47 ...
3 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.74 log(2a) + 1 ... ... 0.34
log(a/b)
0.02 ... ... 53
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 329.70 15.50 0.46 0.54 0.65 63 53
[J2000]
4 RC3 A_e (Johnson B)
1991RC3.9.C...0000d
0.92 log(2a) + 1 ... ... ... 0.02 ... ... ... ... 6.81E+14 49.90 2.40 ... ... ... ... ...
5 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.70 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 300.70 ... ... ... ... ... ...
6 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
124.2 (a) arcsec ... ... 0.510 (b/a) ... ... ... 50.5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 248.40 ... 0.51 0.49 0.59 59 51
[J2000]
7 K_s (LGA/2MASS "total")
2003AJ....125..525J
214.5 (a) arcsec ... ... 0.510 (b/a) ... ... ... 50.5
[J2000]
Diameter for "total" magnitude 1.38E+14 429.00 ... 0.51 0.49 0.59 59 51
[J2000]
8 r (SDSS Isophotal)
2007SDSS6.C...0000:
42.12 (a) arcsec 35.22 arcsec ... ... ... ... 32.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 84.24 ... 0.84 0.16 0.18 33 32
[J2000]
9 r (SDSS Petrosian)
2007SDSS6.C...0000:
6.94 (a) arcsec ... ... ... 0.062 ... ... ... ... 4.77E+14 13.89 0.12 ... ... ... ... ...
10 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
4.1769 (a) arcsec ... ... 0.500 (b/a) 0.014 ... ... 39.7
[J2000]
... 4.77E+14 8.35 0.03 0.50 0.50 0.60 60 40
[J2000]
11 r (SDSS Exponential)
2007SDSS6.C...0000:
2.9685 (a) arcsec ... ... 0.932 (b/a) 0.007 ... ... 44.0
[J2000]
... 4.77E+14 5.94 0.01 0.93 0.07 0.07 21 44
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 05911                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 5.40       arcmin                   2a = 324.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  2.80      arcmin              2b = 168.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.52
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.48
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.58
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 59 deg
Position Angle [Equinox]      :  53    deg [B1950]                  53 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          : 104542.         +125400.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Diameters flagged uncertain.            

No. 2 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +02-28-012 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.60 arcmin 2a = 96.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.10 arcmin 2b = 66.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.69 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.31 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.36 Uncertainty : ... ... Cos-1(b/a) : ... 47 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 : 104542 +1254 (B1950) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 05911 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.74 2a = 329.70 arcsec Uncertainty : 0.02 15.50 arcsec Minor Axis (2b) : ... 2b = 150.67 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.34 b/a = 0.46 Uncertainty : 0.02 0.02 Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.65 Uncertainty : ... ... Cos-1(b/a) : ... 63 deg Position Angle [Equinox] : 53 deg [J2000] 53 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 : 104817.2 +123749. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 05911 Frequency Targeted : RC3 A_e (Johnson B) Major Axis (2a) : log(2a) + 1 = 0.92 2a = 49.90 arcsec Uncertainty : 0.02 2.40 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 : 104817.2 +123749. (J2000) Qualifiers : From new, raw data NED Comment : From magnitude-aperture curves.
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 05911 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.70 2a = 300.70 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 : 104817.2 +123749. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 6 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3371 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 124.2 arcsec 2a = 248.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 126.68 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.510 b/a = 0.51 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.49 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.59 Uncertainty : ... ... Cos-1(b/a) : ... 59 deg Position Angle [Equinox] : 50.5 deg [J2000] 51 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 : 162.070404 12.629300 (J2000) Qualifiers : From new, raw data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3371 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 214.5 arcsec 2a = 429.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 218.79 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.510 b/a = 0.51 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.49 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.59 Uncertainty : ... ... Cos-1(b/a) : ... 59 deg Position Angle [Equinox] : 50.5 deg [J2000] 51 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 : 162.070404 12.629300 (J2000) Qualifiers : From new, raw data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J104816.88+123745.3 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 42.12 arcsec 2a = 84.24 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 35.22 arcsec 2b = 70.44 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.84 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 33 deg Position Angle [Equinox] : 32.1 deg [J2000] 32 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 : 162.0703581980 12.6292732127 (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 J104816.88+123745.3 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 6.94 arcsec 2a = 13.89 arcsec Uncertainty : 0.062 arcsec 0.12 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 : 162.0703581980 12.6292732127 (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 J104816.88+123745.3 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 4.1769 arcsec 2a = 8.35 arcsec Uncertainty : 0.014 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 4.18 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.500 b/a = 0.50 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.50 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.60 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : 39.7 deg [J2000] 40 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 : 162.0703581980 12.6292732127 (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 J104816.88+123745.3 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.9685 arcsec 2a = 5.94 arcsec Uncertainty : 0.007 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 5.53 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.932 b/a = 0.93 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.07 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.07 Uncertainty : ... ... Cos-1(b/a) : ... 21 deg Position Angle [Equinox] : 44.0 deg [J2000] 44 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 : 162.0703581980 12.6292732127 (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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