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Date and Time of the Query: 2019-05-27 T07:33:22 PDT
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Diameter data point(s) for object Maffei 2

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 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.00 log(2a) + 1 ... ... 0.00
log(a/b)
0.00 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 60.00 0.00 ... ... ... ... ...
2 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
276.4 (a) arcsec ... ... 0.460 (b/a) ... ... ... 35.0
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 552.80 ... 0.46 0.54 0.65 63 35
[J2000]
3 K_s (LGA/2MASS "total")
2003AJ....125..525J
456.2 (a) arcsec ... ... 0.460 (b/a) ... ... ... 35.0
[J2000]
Diameter for "total" magnitude 1.38E+14 912.40 ... 0.46 0.54 0.65 63 35
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1991RC3.9.C...0000d
Published Object Name         : UGCA 039                      
Frequency Targeted            : RC3 D_25, R_25 (blue)         
Major Axis (2a)               : log(2a) + 1 = 1.00                  2a = 60.00 arcsec
Uncertainty                   :   0.00                              0.00 arcsec              
Minor Axis (2b)               : ...                                 2b = -59940.00 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : log(a/b) =  0.00                    b/a = -999.00
Uncertainty                   :   0.00                              -999.00
Ellipticity                   : ...                                 1 - b/a = 1000.00
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 1.00
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                   ...
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          : 024154.6        +593611.    (J2000)
Qualifiers                    : Homogenized from previously published data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : Maffei 2 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 276.4 arcsec 2a = 552.80 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 254.29 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.460 b/a = 0.46 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.65 Uncertainty : ... ... Cos-1(b/a) : ... 63 deg Position Angle [Equinox] : 35.0 deg [J2000] 35 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 : 40.479271 59.604229 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : Maffei 2 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 456.2 arcsec 2a = 912.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 419.70 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.460 b/a = 0.46 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.65 Uncertainty : ... ... Cos-1(b/a) : ... 63 deg Position Angle [Equinox] : 35.0 deg [J2000] 35 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 : 40.479271 59.604229 (J2000) Qualifiers : From new, raw data NED Comment :

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