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Date and Time of the Query: 2019-06-15 T13:40:32 PDT
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Diameter data point(s) for object IC 4461

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.......:
9.5 (a) arcsec ... ... 0.600 (b/a) ... ... ... -70
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 19.00 ... 0.60 0.40 0.47 53 110
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
18.7 (a) arcsec ... ... 0.600 (b/a) ... ... ... -70
[J2000]
Diameter for "total" magnitude 1.38E+14 37.40 ... 0.60 0.40 0.47 53 110
[J2000]
3 POSS1 103a-O
1964MCG2..C...0000V
0.35 arcmin 0.15 arcmin ... ... ... ... ... High surface brightness 7.40E+14 21.00 ... 0.43 0.57 0.69 65 ...
4 r (SDSS Isophotal)
2007SDSS6.C...0000:
14.28 (a) arcsec 7.68 arcsec ... ... ... ... 116.6
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 28.57 ... 0.54 0.46 0.55 57 117
[J2000]
5 r (SDSS Petrosian)
2007SDSS6.C...0000:
7.14 (a) arcsec ... ... ... ... ... ... ... ... 4.77E+14 14.27 ... ... ... ... ... ...
6 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
6.1503 (a) arcsec ... ... 0.467 (b/a) 0.084 ... ... 121.9
[J2000]
... 4.77E+14 12.30 0.17 0.47 0.53 0.64 62 122
[J2000]
7 r (SDSS Exponential)
2007SDSS6.C...0000:
2.3080 (a) arcsec ... ... 0.513 (b/a) 0.019 ... ... 120.7
[J2000]
... 4.77E+14 4.62 0.04 0.51 0.49 0.58 59 121
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J14350038+2631548       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 9.5        arcsec               2a = 19.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 11.40 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.600                         b/a = 0.60
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.40
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.47
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 53 deg
Position Angle [Equinox]      :  -70   deg [J2000]                  110 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          : 218.751602      26.531881    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J14350038+2631548 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 18.7 arcsec 2a = 37.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 22.44 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.600 b/a = 0.60 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.40 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.47 Uncertainty : ... ... Cos-1(b/a) : ... 53 deg Position Angle [Equinox] : -70 deg [J2000] 110 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 : 218.751602 26.531881 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +05-34-076 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.35 arcmin 2a = 21.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.15 arcmin 2b = 9.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.43 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.57 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.69 Uncertainty : ... ... Cos-1(b/a) : ... 65 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 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 : "Outer" diameter Coordinates Targeted : 143242 +2643 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J143500.38+263154.8 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 14.28 arcsec 2a = 28.57 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 7.68 arcsec 2b = 15.36 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.54 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.46 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.55 Uncertainty : ... ... Cos-1(b/a) : ... 57 deg Position Angle [Equinox] : 116.6 deg [J2000] 117 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 : 218.7515883337 26.5319117176 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J143500.38+263154.8 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 7.14 arcsec 2a = 14.27 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 : ... 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 : 218.7515883337 26.5319117176 (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 J143500.38+263154.8 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 6.1503 arcsec 2a = 12.30 arcsec Uncertainty : 0.084 arcsec 0.17 arcsec Minor Axis (2b) : ... 2b = 5.74 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.467 b/a = 0.47 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.53 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.64 Uncertainty : ... ... Cos-1(b/a) : ... 62 deg Position Angle [Equinox] : 121.9 deg [J2000] 122 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 : 218.7515883337 26.5319117176 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 7 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J143500.38+263154.8 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.3080 arcsec 2a = 4.62 arcsec Uncertainty : 0.019 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 2.37 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.513 b/a = 0.51 Uncertainty : 0.006 0.01 Ellipticity : ... 1 - b/a = 0.49 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.58 Uncertainty : ... ... Cos-1(b/a) : ... 59 deg Position Angle [Equinox] : 120.7 deg [J2000] 121 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 : 218.7515883337 26.5319117176 (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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