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Date and Time of the Query: 2019-06-20 T10:39:12 PDT
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Diameter data point(s) for object IC 1155

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.......:
13.8 (a) arcsec ... ... 0.640 (b/a) ... ... ... 80
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 27.60 ... 0.64 0.36 0.42 50 80
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
29.3 (a) arcsec ... ... 0.640 (b/a) ... ... ... 80
[J2000]
Diameter for "total" magnitude 1.38E+14 58.70 ... 0.64 0.36 0.42 50 80
[J2000]
3 POSS1 103a-O
1964MCG2..C...0000V
0.50 arcmin 0.40 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 30.00 ... 0.80 0.20 0.22 37 ...
4 POSS1 103a-O
1964MCG2..C...0000V
0.80 arcmin 0.70 arcmin ... ... ... ... ... Moderate surface brightness 7.40E+14 48.00 ... 0.88 0.12 0.13 29 ...
5 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
0.90 log(2a) + 1 ... ... 0.07
log(a/b)
0.04 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 47.70 4.60 0.85 0.15 0.16 32 ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
0.90 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 47.70 ... ... ... ... ... ...
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
27.79 (a) arcsec 21.41 arcsec ... ... ... ... 11.3
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 55.58 ... 0.77 0.23 0.25 40 11
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
6.82 (a) arcsec ... ... ... 0.186 ... ... ... ... 4.77E+14 13.64 0.37 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
3.4326 (a) arcsec ... ... 0.850 (b/a) 0.027 ... ... 69.7
[J2000]
... 4.77E+14 6.87 0.05 0.85 0.15 0.16 32 70
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
3.6358 (a) arcsec ... ... 0.791 (b/a) 0.017 ... ... 62.8
[J2000]
... 4.77E+14 7.27 0.03 0.79 0.21 0.23 38 63
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J16003578+1541080       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 13.8       arcsec               2a = 27.60 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 17.66 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.640                         b/a = 0.64
Uncertainty                   : ...                                 ...
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]      :   80   deg [J2000]                  80 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          : 240.149048      15.685583    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J16003578+1541080 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 29.3 arcsec 2a = 58.70 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 37.57 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.640 b/a = 0.64 Uncertainty : ... ... 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] : 80 deg [J2000] 80 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 : 240.149048 15.685583 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +03-41-023 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.50 arcmin 2a = 30.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.40 arcmin 2b = 24.00 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 : 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 : 155818 +1549 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +03-41-023 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.80 arcmin 2a = 48.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.70 arcmin 2b = 42.00 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] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Moderate 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 : 155818 +1549 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : MCG +03-41-023 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 0.90 2a = 47.70 arcsec Uncertainty : 0.04 4.60 arcsec Minor Axis (2b) : ... 2b = 40.59 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.07 b/a = 0.85 Uncertainty : 0.03 0.06 Ellipticity : ... 1 - b/a = 0.15 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.16 Uncertainty : ... ... Cos-1(b/a) : ... 32 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 : 160035.8 +154107. (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 +03-41-023 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 0.90 2a = 47.70 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 : 160035.8 +154107. (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 J160035.76+154108.2 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 27.79 arcsec 2a = 55.58 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 21.41 arcsec 2b = 42.82 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.77 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.23 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.25 Uncertainty : ... ... Cos-1(b/a) : ... 40 deg Position Angle [Equinox] : 11.3 deg [J2000] 11 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 : 240.1490054712 15.6856314377 (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 J160035.76+154108.2 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 6.82 arcsec 2a = 13.64 arcsec Uncertainty : 0.186 arcsec 0.37 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 : 240.1490054712 15.6856314377 (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 J160035.76+154108.2 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 3.4326 arcsec 2a = 6.87 arcsec Uncertainty : 0.027 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 5.84 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.850 b/a = 0.85 Uncertainty : 0.005 0.01 Ellipticity : ... 1 - b/a = 0.15 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.16 Uncertainty : ... ... Cos-1(b/a) : ... 32 deg Position Angle [Equinox] : 69.7 deg [J2000] 70 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 : 240.1490054712 15.6856314377 (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 J160035.76+154108.2 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 3.6358 arcsec 2a = 7.27 arcsec Uncertainty : 0.017 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 5.75 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.791 b/a = 0.79 Uncertainty : 0.005 0.01 Ellipticity : ... 1 - b/a = 0.21 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.23 Uncertainty : ... ... Cos-1(b/a) : ... 38 deg Position Angle [Equinox] : 62.8 deg [J2000] 63 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 : 240.1490054712 15.6856314377 (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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