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Date and Time of the Query: 2019-05-21 T08:02:48 PDT
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Diameter data point(s) for object 2MASX J12575652+2722554

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.......:
7.2 (a) arcsec ... ... 0.417 (b/a) ... ... ... 45
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 14.40 ... 0.42 0.58 0.70 65 45
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
13.9 (a) arcsec ... ... 0.417 (b/a) ... ... ... 45
[J2000]
Diameter for "total" magnitude 1.38E+14 27.70 ... 0.42 0.58 0.70 65 45
[J2000]
3 r (SDSS Isophotal)
2007SDSS6.C...0000:
9.37 (a) arcsec 9.17 arcsec ... ... ... ... 120.0
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 18.74 ... 0.98 0.02 0.02 12 120
[J2000]
4 r (SDSS Petrosian)
2007SDSS6.C...0000:
3.06 (a) arcsec ... ... ... 0.048 ... ... ... ... 4.77E+14 6.11 0.10 ... ... ... ... ...
5 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
3.1749 (a) arcsec ... ... 0.967 (b/a) 0.061 ... ... 137.7
[J2000]
... 4.77E+14 6.35 0.12 0.97 0.03 0.03 15 138
[J2000]
6 r (SDSS Exponential)
2007SDSS6.C...0000:
1.2725 (a) arcsec ... ... 0.983 (b/a) 0.017 ... ... 135.7
[J2000]
... 4.77E+14 2.54 0.03 0.98 0.02 0.02 11 136
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J12575652+2722554       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 7.2        arcsec               2a = 14.40 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 6.00 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.417                         b/a = 0.42
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.58
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.70
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 65 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          : 194.485489      27.382195    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J12575652+2722554 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 13.9 arcsec 2a = 27.70 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 11.55 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.417 b/a = 0.42 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.58 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.70 Uncertainty : ... ... Cos-1(b/a) : ... 65 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 : 194.485489 27.382195 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J125756.51+272256.2 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 9.37 arcsec 2a = 18.74 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 9.17 arcsec 2b = 18.34 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.98 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.02 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.02 Uncertainty : ... ... Cos-1(b/a) : ... 12 deg Position Angle [Equinox] : 120.0 deg [J2000] 120 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 : 194.4854905228 27.3823001434 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J125756.51+272256.2 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 3.06 arcsec 2a = 6.11 arcsec Uncertainty : 0.048 arcsec 0.10 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 : 194.4854905228 27.3823001434 (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 J125756.51+272256.2 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 3.1749 arcsec 2a = 6.35 arcsec Uncertainty : 0.061 arcsec 0.12 arcsec Minor Axis (2b) : ... 2b = 6.14 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.967 b/a = 0.97 Uncertainty : 0.019 0.02 Ellipticity : ... 1 - b/a = 0.03 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.03 Uncertainty : ... ... Cos-1(b/a) : ... 15 deg Position Angle [Equinox] : 137.7 deg [J2000] 138 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 : 194.4854905228 27.3823001434 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J125756.51+272256.2 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 1.2725 arcsec 2a = 2.54 arcsec Uncertainty : 0.017 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 2.50 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.983 b/a = 0.98 Uncertainty : 0.015 0.01 Ellipticity : ... 1 - b/a = 0.02 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.02 Uncertainty : ... ... Cos-1(b/a) : ... 11 deg Position Angle [Equinox] : 135.7 deg [J2000] 136 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 : 194.4854905228 27.3823001434 (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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