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Date and Time of the Query: 2019-06-18 T16:55:02 PDT
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Diameter data point(s) for object IC 0508

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 K_s (2MASS isophotal)
20032MASX.C.......:
22.4 (a) arcsec ... ... 0.420 (b/a) ... ... ... 75
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 44.80 ... 0.42 0.58 0.70 65 75
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
42.3 (a) arcsec ... ... 0.420 (b/a) ... ... ... 75
[J2000]
Diameter for "total" magnitude 1.38E+14 84.60 ... 0.42 0.58 0.70 65 75
[J2000]
3 POSS1 103a-O
1964MCG2..C...0000V
0.45 arcmin 0.20 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 27.00 ... 0.44 0.56 0.67 64 ...
4 POSS1 103a-O
1964MCG2..C...0000V
0.75 arcmin 0.60 arcmin ... ... ... ... ... Low surface brightness 7.40E+14 45.00 ... 0.80 0.20 0.22 37 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
0.85 log(2a) + 1 ... ... 0.09
log(a/b)
0.07 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 42.50 7.40 0.81 0.19 0.20 36 ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
0.86 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 43.50 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2006SDSS5.C...0000:
26.02 (a) arcsec 23.14 arcsec ... ... ... ... 121.9
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 52.05 ... 0.89 0.11 0.12 27 122
[J2000]
8 r (SDSS Petrosian)
2006SDSS5.C...0000:
8.02 (a) arcsec ... ... ... 0.17 ... ... ... ... 4.77E+14 16.05 0.34 ... ... ... ... ...
9 r (SDSS de Vaucouleurs)
2006SDSS5.C...0000:
11.75 (a) arcsec ... ... 0.692 (b/a) 0.06 ... ... 81.3
[J2000]
... 4.77E+14 23.50 0.12 0.69 0.31 0.35 46 81
[J2000]
10 r (SDSS Exponential)
2006SDSS5.C...0000:
4.33 (a) arcsec ... ... 0.666 (b/a) 0.02 ... ... 82.5
[J2000]
... 4.77E+14 8.66 0.03 0.67 0.33 0.39 48 83
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J08282250+2507300       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 22.4       arcsec               2a = 44.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 18.82 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.420                         b/a = 0.42
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.58
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.70
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 65 deg
Position Angle [Equinox]      :   75   deg [J2000]                  75 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          : 127.093727      25.124996    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J08282250+2507300 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 42.3 arcsec 2a = 84.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 35.53 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.420 b/a = 0.42 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.58 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.70 Uncertainty : ... ... Cos-1(b/a) : ... 65 deg Position Angle [Equinox] : 75 deg [J2000] 75 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 : 127.093727 25.124996 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +04-20-063 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.45 arcmin 2a = 27.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.20 arcmin 2b = 12.00 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] = 0.67 Uncertainty : ... ... Cos-1(b/a) : ... 64 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 : 082518 +2519 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +04-20-063 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.75 arcmin 2a = 45.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.60 arcmin 2b = 36.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.80 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.20 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.22 Uncertainty : ... ... Cos-1(b/a) : ... 37 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 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 : 082518 +2519 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +04-20-063 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 0.85 2a = 42.50 arcsec Uncertainty : 0.07 7.40 arcsec Minor Axis (2b) : ... 2b = 34.55 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.09 b/a = 0.81 Uncertainty : 0.06 0.12 Ellipticity : ... 1 - b/a = 0.19 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.20 Uncertainty : ... ... Cos-1(b/a) : ... 36 deg Position Angle [Equinox] : ... ... 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 : 082822.5 +250729. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +04-20-063 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 0.86 2a = 43.50 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 : 082822.5 +250729. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2006SDSS5.C...0000: Published Object Name : SDSS J082822.31+250729.0 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 26.02 arcsec 2a = 52.05 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 23.14 arcsec 2b = 46.29 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.89 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.11 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.12 Uncertainty : ... ... Cos-1(b/a) : ... 27 deg Position Angle [Equinox] : 121.9 deg [J2000] 122 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 : 127.0929489 25.1247196 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J082822.31+250729.0 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 8.02 arcsec 2a = 16.05 arcsec Uncertainty : 0.17 arcsec 0.34 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 : 127.0929489 25.1247196 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J082822.31+250729.0 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 11.75 arcsec 2a = 23.50 arcsec Uncertainty : 0.06 arcsec 0.12 arcsec Minor Axis (2b) : ... 2b = 16.26 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.692 b/a = 0.69 Uncertainty : 0.005 0.01 Ellipticity : ... 1 - b/a = 0.31 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.35 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 81.3 deg [J2000] 81 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 : 127.0929489 25.1247196 (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 : 2006SDSS5.C...0000: Published Object Name : SDSS J082822.31+250729.0 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.33 arcsec 2a = 8.66 arcsec Uncertainty : 0.02 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 5.77 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.666 b/a = 0.67 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.33 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.39 Uncertainty : ... ... Cos-1(b/a) : ... 48 deg Position Angle [Equinox] : 82.5 deg [J2000] 83 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 : 127.0929489 25.1247196 (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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