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Date and Time of the Query: 2019-08-23 T21:37:02 PDT
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Diameter data point(s) for object MESSIER 015

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 (LGA/2MASS isophotal)
2003AJ....125..525J
159.4 (a) arcsec ... ... 0.960 (b/a) ... ... ... 27.5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 318.80 ... 0.96 0.04 0.04 16 28
[J2000]
2 K_s (LGA/2MASS "total")
2003AJ....125..525J
231.0 (a) arcsec ... ... 0.960 (b/a) ... ... ... 27.5
[J2000]
Diameter for "total" magnitude 1.38E+14 462.00 ... 0.96 0.04 0.04 16 28
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 2003AJ....125..525J
Published Object Name         : MESSIER 015                   
Frequency Targeted            : K_s (LGA/2MASS isophotal)     
Major Axis (2a)               : a = 159.4      arcsec               2a = 318.80 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 306.05 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.960                         b/a = 0.96
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.04
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.04
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 16 deg
Position Angle [Equinox]      :  27.5  deg [J2000]                  28 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          : 322.493317      12.166780    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : MESSIER 015 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 231.0 arcsec 2a = 462.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 443.52 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.960 b/a = 0.96 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.04 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.04 Uncertainty : ... ... Cos-1(b/a) : ... 16 deg Position Angle [Equinox] : 27.5 deg [J2000] 28 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 : 322.493317 12.166780 (J2000) Qualifiers : From new, raw data NED Comment :

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