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Date and Time of the Query: 2019-03-26 T17:35:21 PDT
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Diameter data point(s) for object IC 4302

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
1.30 arcmin 0.12 arcmin ... ... ... ... 128
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 78.00 ... 0.09 0.91 0.98 85 128
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
25.5 (a) arcsec ... ... 0.200 (b/a) ... ... ... -55
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 51.00 ... 0.20 0.80 0.92 78 125
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
39.7 (a) arcsec ... ... 0.200 (b/a) ... ... ... -55
[J2000]
Diameter for "total" magnitude 1.38E+14 79.50 ... 0.20 0.80 0.92 78 125
[J2000]
4 POSS1 103a-O
1964MCG2..C...0000V
1.30 arcmin 0.10 arcmin ... ... ... ... ... Very low surface brightness 7.40E+14 78.00 ... 0.08 0.92 0.99 86 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.11 log(2a) + 1 ... ... 1.03
log(a/b)
0.05 ... ... 128
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 77.30 9.40 0.09 0.91 0.98 85 128
[J2000]
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.11 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 77.30 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
46.41 (a) arcsec 8.75 arcsec ... ... ... ... 125.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 92.81 ... 0.19 0.81 0.93 79 125
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
8.77 (a) arcsec ... ... ... 2.476 ... ... ... ... 4.77E+14 17.54 4.95 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
11.7488 (a) arcsec ... ... 0.187 (b/a) 0.176 ... ... 129.1
[J2000]
... 4.77E+14 23.50 0.35 0.19 0.81 0.93 79 129
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
6.7208 (a) arcsec ... ... 0.150 (b/a) 0.024 ... ... 128.3
[J2000]
... 4.77E+14 13.44 0.05 0.15 0.85 0.96 81 128
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 08580                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.30       arcmin                   2a = 78.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.12      arcmin              2b = 7.20 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.09
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.91
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.98
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 85 deg
Position Angle [Equinox]      : 128    deg [B1950]                  128 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          : 133318.         +334400.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13353598+3328466 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 25.5 arcsec 2a = 51.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 10.20 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.200 b/a = 0.20 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.80 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.92 Uncertainty : ... ... Cos-1(b/a) : ... 78 deg Position Angle [Equinox] : -55 deg [J2000] 125 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 : 203.899933 33.479630 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13353598+3328466 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 39.7 arcsec 2a = 79.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 15.90 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.200 b/a = 0.20 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.80 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.92 Uncertainty : ... ... Cos-1(b/a) : ... 78 deg Position Angle [Equinox] : -55 deg [J2000] 125 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 : 203.899933 33.479630 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-30-051 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.30 arcmin 2a = 78.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.10 arcmin 2b = 6.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.08 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.92 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.99 Uncertainty : ... ... Cos-1(b/a) : ... 86 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 : 133324 +3344 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 08580 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.11 2a = 77.30 arcsec Uncertainty : 0.05 9.40 arcsec Minor Axis (2b) : ... 2b = 7.19 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 1.03 b/a = 0.09 Uncertainty : 0.05 0.01 Ellipticity : ... 1 - b/a = 0.91 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.98 Uncertainty : ... ... Cos-1(b/a) : ... 85 deg Position Angle [Equinox] : 128 deg [J2000] 128 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 : 133530.0 +332800. (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 08580 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.11 2a = 77.30 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 : 133530.0 +332800. (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 J133535.94+332846.4 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 46.41 arcsec 2a = 92.81 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 8.75 arcsec 2b = 17.50 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.19 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.81 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.93 Uncertainty : ... ... Cos-1(b/a) : ... 79 deg Position Angle [Equinox] : 125.1 deg [J2000] 125 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 : 203.8997873060 33.4795781601 (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 J133535.94+332846.4 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 8.77 arcsec 2a = 17.54 arcsec Uncertainty : 2.476 arcsec 4.95 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 : 203.8997873060 33.4795781601 (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 J133535.94+332846.4 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 11.7488 arcsec 2a = 23.50 arcsec Uncertainty : 0.176 arcsec 0.35 arcsec Minor Axis (2b) : ... 2b = 4.39 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.187 b/a = 0.19 Uncertainty : 0.002 0.00 Ellipticity : ... 1 - b/a = 0.81 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.93 Uncertainty : ... ... Cos-1(b/a) : ... 79 deg Position Angle [Equinox] : 129.1 deg [J2000] 129 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 : 203.8997873060 33.4795781601 (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 J133535.94+332846.4 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 6.7208 arcsec 2a = 13.44 arcsec Uncertainty : 0.024 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 2.02 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.150 b/a = 0.15 Uncertainty : 0.001 0.00 Ellipticity : ... 1 - b/a = 0.85 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.96 Uncertainty : ... ... Cos-1(b/a) : ... 81 deg Position Angle [Equinox] : 128.3 deg [J2000] 128 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 : 203.8997873060 33.4795781601 (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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