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Date and Time of the Query: 2019-07-21 T16:19:58 PDT
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Diameter data point(s) for object NGC 3248

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
2.50 arcmin 1.10 arcmin ... ... ... ... 135
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 150.00 ... 0.44 0.56 0.68 64 135
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
35.5 (a) arcsec ... ... 0.620 (b/a) ... ... ... -40
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 71.00 ... 0.62 0.38 0.44 52 140
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
52.7 (a) arcsec ... ... 0.620 (b/a) ... ... ... -40
[J2000]
Diameter for "total" magnitude 1.38E+14 105.40 ... 0.62 0.38 0.44 52 140
[J2000]
4 POSS1 103a-O
1964MCG2..C...0000V
0.50 arcmin 0.35 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 30.00 ... 0.70 0.30 0.34 46 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.40 log(2a) + 1 ... ... 0.34
log(a/b)
0.11 ... ... 135
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 150.70 43.40 0.46 0.54 0.65 63 135
[J2000]
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.35 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 134.30 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
66.40 (a) arcsec 36.39 arcsec ... ... ... ... 131.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 132.81 ... 0.55 0.45 0.54 57 131
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
8.41 (a) arcsec ... ... ... 0.377 ... ... ... ... 4.77E+14 16.83 0.76 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
4.3060 (a) arcsec ... ... 0.641 (b/a) 0.019 ... ... 132.9
[J2000]
... 4.77E+14 8.61 0.04 0.64 0.36 0.42 50 133
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
3.8113 (a) arcsec ... ... 0.714 (b/a) 0.015 ... ... 134.0
[J2000]
... 4.77E+14 7.62 0.03 0.71 0.29 0.32 44 134
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 05669                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 2.50       arcmin                   2a = 150.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  1.10      arcmin              2b = 66.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.44
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.56
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.68
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 64 deg
Position Angle [Equinox]      : 135    deg [B1950]                  135 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          : 102500.         +230600.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Major diameter flagged very uncertain.  

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J10274542+2250498 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 35.5 arcsec 2a = 71.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 44.02 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.620 b/a = 0.62 Uncertainty : ... ... 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] : -40 deg [J2000] 140 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 : 156.939301 22.847147 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J10274542+2250498 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 52.7 arcsec 2a = 105.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 65.35 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.620 b/a = 0.62 Uncertainty : ... ... 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] : -40 deg [J2000] 140 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 : 156.939301 22.847147 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +04-25-020 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.50 arcmin 2a = 30.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.35 arcmin 2b = 21.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 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 : 102500 +2306 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 05669 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.40 2a = 150.70 arcsec Uncertainty : 0.11 43.40 arcsec Minor Axis (2b) : ... 2b = 68.87 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.34 b/a = 0.46 Uncertainty : 0.08 0.09 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] : 135 deg [J2000] 135 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 : 102745.6 +225056. (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 05669 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.35 2a = 134.30 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 : 102745.6 +225056. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J102745.44+225049.8 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 66.40 arcsec 2a = 132.81 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 36.39 arcsec 2b = 72.78 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] = 0.54 Uncertainty : ... ... Cos-1(b/a) : ... 57 deg Position Angle [Equinox] : 131.1 deg [J2000] 131 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 : 156.9393412300 22.8471825147 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J102745.44+225049.8 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 8.41 arcsec 2a = 16.83 arcsec Uncertainty : 0.377 arcsec 0.76 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 : 156.9393412300 22.8471825147 (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 J102745.44+225049.8 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 4.3060 arcsec 2a = 8.61 arcsec Uncertainty : 0.019 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 5.52 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.641 b/a = 0.64 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.36 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.42 Uncertainty : ... ... Cos-1(b/a) : ... 50 deg Position Angle [Equinox] : 132.9 deg [J2000] 133 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 : 156.9393412300 22.8471825147 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J102745.44+225049.8 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 3.8113 arcsec 2a = 7.62 arcsec Uncertainty : 0.015 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 5.44 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.714 b/a = 0.71 Uncertainty : 0.003 0.00 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] : 134.0 deg [J2000] 134 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 : 156.9393412300 22.8471825147 (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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