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Date and Time of the Query: 2019-06-26 T08:30:53 PDT
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Diameter data point(s) for object IC 1118

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.......:
18.5 (a) arcsec ... ... 0.840 (b/a) ... ... ... 40
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 37.00 ... 0.84 0.16 0.17 33 40
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
36.8 (a) arcsec ... ... 0.840 (b/a) ... ... ... 40
[J2000]
Diameter for "total" magnitude 1.38E+14 73.50 ... 0.84 0.16 0.17 33 40
[J2000]
3 POSS1 103a-O
1963MCG3..C...0000V
0.30 arcmin 0.25 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 18.00 ... 0.83 0.17 0.18 34 ...
4 POSS1 103a-O
1963MCG3..C...0000V
0.80 arcmin 0.80 arcmin ... ... ... ... ... Low surface brightness 7.40E+14 48.00 ... 1.00 0.00 0.00 0 ...
5 r (SDSS Isophotal)
2007SDSS6.C...0000:
36.35 (a) arcsec 24.17 arcsec ... ... ... ... 73.4
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 72.71 ... 0.67 0.33 0.39 48 73
[J2000]
6 r (SDSS Petrosian)
2007SDSS6.C...0000:
5.61 (a) arcsec ... ... ... 0.138 ... ... ... ... 4.77E+14 11.22 0.28 ... ... ... ... ...
7 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
2.9088 (a) arcsec ... ... 0.774 (b/a) 0.017 ... ... 72.9
[J2000]
... 4.77E+14 5.82 0.04 0.77 0.23 0.25 39 73
[J2000]
8 r (SDSS Exponential)
2007SDSS6.C...0000:
2.2243 (a) arcsec ... ... 0.773 (b/a) 0.007 ... ... 71.5
[J2000]
... 4.77E+14 4.45 0.01 0.77 0.23 0.25 39 72
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J15245954+1326421       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 18.5       arcsec               2a = 37.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 31.08 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.840                         b/a = 0.84
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.16
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.17
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 33 deg
Position Angle [Equinox]      :   40   deg [J2000]                  40 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          : 231.248032      13.445075    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J15245954+1326421 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 36.8 arcsec 2a = 73.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 61.74 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.840 b/a = 0.84 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.16 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.17 Uncertainty : ... ... Cos-1(b/a) : ... 33 deg Position Angle [Equinox] : 40 deg [J2000] 40 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 : 231.248032 13.445075 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +02-39-029 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.30 arcmin 2a = 18.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 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 : 152242 +1337 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1963MCG3..C...0000V Published Object Name : MCG +02-39-029 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.80 arcmin 2a = 48.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.80 arcmin 2b = 48.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 1.00 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.00 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.00 Uncertainty : ... ... Cos-1(b/a) : ... 0 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 : 152242 +1337 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J152459.52+132642.3 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 36.35 arcsec 2a = 72.71 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 24.17 arcsec 2b = 48.34 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.67 Uncertainty : ... ... 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] : 73.4 deg [J2000] 73 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 : 231.2480287560 13.4450935106 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J152459.52+132642.3 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 5.61 arcsec 2a = 11.22 arcsec Uncertainty : 0.138 arcsec 0.28 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 : 231.2480287560 13.4450935106 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J152459.52+132642.3 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 2.9088 arcsec 2a = 5.82 arcsec Uncertainty : 0.017 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 4.50 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.774 b/a = 0.77 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.23 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.25 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : 72.9 deg [J2000] 73 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 : 231.2480287560 13.4450935106 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 8 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J152459.52+132642.3 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.2243 arcsec 2a = 4.45 arcsec Uncertainty : 0.007 arcsec 0.01 arcsec Minor Axis (2b) : ... 2b = 3.44 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.773 b/a = 0.77 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.23 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.25 Uncertainty : ... ... Cos-1(b/a) : ... 39 deg Position Angle [Equinox] : 71.5 deg [J2000] 72 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 : 231.2480287560 13.4450935106 (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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