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Date and Time of the Query: 2019-03-23 T20:15:40 PDT
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Diameter data point(s) for object IC 1222

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
1.70 arcmin 1.20 arcmin ... ... ... ... 50
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 102.00 ... 0.71 0.29 0.33 45 50
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
28.6 (a) arcsec ... ... 0.400 (b/a) ... ... ... 45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 57.20 ... 0.40 0.60 0.72 66 45
[J2000]
3 K_s (2MASS isophotal)
20032MASX.C.......:
23.6 (a) arcsec ... ... 0.260 (b/a) ... ... ... 85
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 47.20 ... 0.26 0.74 0.87 75 85
[J2000]
4 K_s (2MASS "total")
20032MASX.C.......:
65.4 (a) arcsec ... ... 0.400 (b/a) ... ... ... 45
[J2000]
Diameter for "total" magnitude 1.38E+14 130.90 ... 0.40 0.60 0.72 66 45
[J2000]
5 K_s (2MASS "total")
20032MASX.C.......:
36.1 (a) arcsec ... ... 0.260 (b/a) ... ... ... 85
[J2000]
Diameter for "total" magnitude 1.38E+14 72.30 ... 0.26 0.74 0.87 75 85
[J2000]
6 POSS1 103a-O
1962MCG1..C...0000V
0.70 arcmin 0.40 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 42.00 ... 0.57 0.43 0.51 55 ...
7 POSS1 103a-O
1962MCG1..C...0000V
1.70 arcmin 1.50 arcmin ... ... ... ... ... Intermed. surface brightness 7.40E+14 102.00 ... 0.88 0.12 0.12 28 ...
8 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.23 log(2a) + 1 ... ... 0.10
log(a/b)
0.05 ... ... 50
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 101.90 12.40 0.79 0.21 0.23 37 50
[J2000]
9 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.23 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 101.90 ... ... ... ... ... ...
10 r (SDSS Isophotal)
2007SDSS6.C...0000:
39.29 (a) arcsec 32.08 arcsec ... ... ... ... 37.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 78.59 ... 0.82 0.18 0.20 35 37
[J2000]
11 r (SDSS Petrosian)
2007SDSS6.C...0000:
11.60 (a) arcsec ... ... ... 0.072 ... ... ... ... 4.77E+14 23.20 0.14 ... ... ... ... ...
12 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
11.0414 (a) arcsec ... ... 0.555 (b/a) 0.094 ... ... 44.2
[J2000]
... 4.77E+14 22.08 0.19 0.56 0.44 0.53 56 44
[J2000]
13 r (SDSS Exponential)
2007SDSS6.C...0000:
6.6659 (a) arcsec ... ... 0.492 (b/a) 0.025 ... ... 45.8
[J2000]
... 4.77E+14 13.33 0.05 0.49 0.51 0.61 61 46
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 10461                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.70       arcmin                   2a = 102.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  1.20      arcmin              2b = 72.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.71
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.29
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.33
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 45 deg
Position Angle [Equinox]      :  50    deg [B1950]                  50 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          : 163336.         +461900.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J16350921+4612500 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 28.6 arcsec 2a = 57.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 22.88 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.72 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 45 deg [J2000] 45 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 : 248.788330 46.213909 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J16351005+4612572 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 23.6 arcsec 2a = 47.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 12.27 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.260 b/a = 0.26 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.74 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.87 Uncertainty : ... ... Cos-1(b/a) : ... 75 deg Position Angle [Equinox] : 85 deg [J2000] 85 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 : 248.791870 46.215954 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J16350921+4612500 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 65.4 arcsec 2a = 130.90 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 52.36 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.72 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 45 deg [J2000] 45 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 : 248.788330 46.213909 (J2000) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J16351005+4612572 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 36.1 arcsec 2a = 72.30 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 18.80 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.260 b/a = 0.26 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.74 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.87 Uncertainty : ... ... Cos-1(b/a) : ... 75 deg Position Angle [Equinox] : 85 deg [J2000] 85 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 : 248.791870 46.215954 (J2000) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +08-30-032 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.70 arcmin 2a = 42.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.40 arcmin 2b = 24.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.57 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.43 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.51 Uncertainty : ... ... Cos-1(b/a) : ... 55 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 : 163342 +4618 (B1950) Qualifiers : From new, raw data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 1962MCG1..C...0000V Published Object Name : MCG +08-30-032 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.70 arcmin 2a = 102.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.50 arcmin 2b = 90.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.12 Uncertainty : ... ... Cos-1(b/a) : ... 28 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Intermed. 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 : 163342 +4618 (B1950) Qualifiers : From new, raw data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 10461 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.23 2a = 101.90 arcsec Uncertainty : 0.05 12.40 arcsec Minor Axis (2b) : ... 2b = 80.91 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.10 b/a = 0.79 Uncertainty : 0.05 0.10 Ellipticity : ... 1 - b/a = 0.21 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.23 Uncertainty : ... ... Cos-1(b/a) : ... 37 deg Position Angle [Equinox] : 50 deg [J2000] 50 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 : 163509.1 +461251. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 9 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 10461 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.23 2a = 101.90 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 : 163509.1 +461251. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 10 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J163509.19+461250.0 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 39.29 arcsec 2a = 78.59 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 32.08 arcsec 2b = 64.17 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.20 Uncertainty : ... ... Cos-1(b/a) : ... 35 deg Position Angle [Equinox] : 37.1 deg [J2000] 37 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 : 248.7883156288 46.2139085616 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 11 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J163509.19+461250.0 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 11.60 arcsec 2a = 23.20 arcsec Uncertainty : 0.072 arcsec 0.14 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 : 248.7883156288 46.2139085616 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J163509.19+461250.0 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 11.0414 arcsec 2a = 22.08 arcsec Uncertainty : 0.094 arcsec 0.19 arcsec Minor Axis (2b) : ... 2b = 12.26 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.555 b/a = 0.56 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.44 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.53 Uncertainty : ... ... Cos-1(b/a) : ... 56 deg Position Angle [Equinox] : 44.2 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 : 248.7883156288 46.2139085616 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 13 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J163509.19+461250.0 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 6.6659 arcsec 2a = 13.33 arcsec Uncertainty : 0.025 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 6.56 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.492 b/a = 0.49 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.51 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.61 Uncertainty : ... ... Cos-1(b/a) : ... 61 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 : 248.7883156288 46.2139085616 (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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