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Date and Time of the Query: 2019-03-24 T02:31:29 PDT
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Diameter data point(s) for object IC 2811

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.......:
11.4 (a) arcsec ... ... 0.640 (b/a) ... ... ... -85
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 22.80 ... 0.64 0.36 0.42 50 95
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
23.5 (a) arcsec ... ... 0.640 (b/a) ... ... ... -85
[J2000]
Diameter for "total" magnitude 1.38E+14 47.00 ... 0.64 0.36 0.42 50 95
[J2000]
3 r (SDSS Isophotal)
2004SDSS3.C...0000:
19.03 (a) arcsec 9.40 arcsec ... ... ... ... 89.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 38.07 ... 0.49 0.51 0.61 60 89
[J2000]
4 r (SDSS Petrosian)
2004SDSS3.C...0000:
4.62 (a) arcsec ... ... ... 0.35 ... ... ... ... 4.77E+14 9.24 0.69 ... ... ... ... ...
5 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
6.55 (a) arcsec ... ... 0.497 (b/a) 0.11 ... ... 85.9
[J2000]
... 4.77E+14 13.10 0.23 0.50 0.50 0.60 60 86
[J2000]
6 r (SDSS Exponential)
2004SDSS3.C...0000:
2.72 (a) arcsec ... ... 0.480 (b/a) 0.02 ... ... 87.3
[J2000]
... 4.77E+14 5.45 0.05 0.48 0.52 0.63 61 87
[J2000]
7 r (SDSS Isophotal)
2007SDSS6.C...0000:
19.03 (a) arcsec 9.40 arcsec ... ... ... ... 89.1
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 38.07 ... 0.49 0.51 0.61 60 89
[J2000]
8 r (SDSS Petrosian)
2007SDSS6.C...0000:
4.62 (a) arcsec ... ... ... 0.347 ... ... ... ... 4.77E+14 9.24 0.69 ... ... ... ... ...
9 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
6.5479 (a) arcsec ... ... 0.497 (b/a) 0.115 ... ... 85.9
[J2000]
... 4.77E+14 13.10 0.23 0.50 0.50 0.60 60 86
[J2000]
10 r (SDSS Exponential)
2007SDSS6.C...0000:
2.7227 (a) arcsec ... ... 0.480 (b/a) 0.025 ... ... 87.3
[J2000]
... 4.77E+14 5.45 0.05 0.48 0.52 0.63 61 87
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J11254464+0910132       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 11.4       arcsec               2a = 22.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 14.59 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]      :  -85   deg [J2000]                  95 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          : 171.436020      9.170411    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J11254464+0910132 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 23.5 arcsec 2a = 47.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 30.08 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] : -85 deg [J2000] 95 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 : 171.436020 9.170411 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J112544.64+091013.9 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 19.03 arcsec 2a = 38.07 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 9.40 arcsec 2b = 18.80 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.49 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.51 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.61 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : 89.1 deg [J2000] 89 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 : 171.4360199 9.1705284 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J112544.64+091013.9 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.62 arcsec 2a = 9.24 arcsec Uncertainty : 0.35 arcsec 0.69 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 : 171.4360199 9.1705284 (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 : 2004SDSS3.C...0000: Published Object Name : SDSS J112544.64+091013.9 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 6.55 arcsec 2a = 13.10 arcsec Uncertainty : 0.11 arcsec 0.23 arcsec Minor Axis (2b) : ... 2b = 6.51 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.497 b/a = 0.50 Uncertainty : 0.009 0.01 Ellipticity : ... 1 - b/a = 0.50 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.60 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : 85.9 deg [J2000] 86 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 : 171.4360199 9.1705284 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 6 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J112544.64+091013.9 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.72 arcsec 2a = 5.45 arcsec Uncertainty : 0.02 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 2.62 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.480 b/a = 0.48 Uncertainty : 0.006 0.01 Ellipticity : ... 1 - b/a = 0.52 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.63 Uncertainty : ... ... Cos-1(b/a) : ... 61 deg Position Angle [Equinox] : 87.3 deg [J2000] 87 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 : 171.4360199 9.1705284 (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 J112544.64+091013.9 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 19.03 arcsec 2a = 38.07 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 9.40 arcsec 2b = 18.80 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.49 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.51 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.61 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : 89.1 deg [J2000] 89 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 : 171.4360270330 9.1705284210 (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 J112544.64+091013.9 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 4.62 arcsec 2a = 9.24 arcsec Uncertainty : 0.347 arcsec 0.69 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 : 171.4360270330 9.1705284210 (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 J112544.64+091013.9 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 6.5479 arcsec 2a = 13.10 arcsec Uncertainty : 0.115 arcsec 0.23 arcsec Minor Axis (2b) : ... 2b = 6.51 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.497 b/a = 0.50 Uncertainty : 0.009 0.01 Ellipticity : ... 1 - b/a = 0.50 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.60 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : 85.9 deg [J2000] 86 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 : 171.4360270330 9.1705284210 (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 J112544.64+091013.9 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.7227 arcsec 2a = 5.45 arcsec Uncertainty : 0.025 arcsec 0.05 arcsec Minor Axis (2b) : ... 2b = 2.61 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.480 b/a = 0.48 Uncertainty : 0.006 0.01 Ellipticity : ... 1 - b/a = 0.52 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.63 Uncertainty : ... ... Cos-1(b/a) : ... 61 deg Position Angle [Equinox] : 87.3 deg [J2000] 87 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 : 171.4360270330 9.1705284210 (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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