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Date and Time of the Query: 2018-12-18 T23:02:30 PST
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Diameter data point(s) for object NGC 2187B

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.......:
37.2 (a) arcsec ... ... 0.800 (b/a) ... ... ... 80
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 74.40 ... 0.80 0.20 0.22 37 80
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
54.7 (a) arcsec ... ... 0.800 (b/a) ... ... ... 80
[J2000]
Diameter for "total" magnitude 1.38E+14 109.40 ... 0.80 0.20 0.22 37 80
[J2000]
3 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
151.36 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 151.36 ... 0.83 0.17 0.18 34 79
[J2000]
4 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
186.21 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 186.21 ... 0.83 0.17 0.18 34 79
[J2000]
5 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
229.09 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
27.0 B-mag arcsec^-2^ 6.81E+14 229.09 ... 0.83 0.17 0.18 34 79
[J2000]
6 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
127.35 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
70% total B light 6.81E+14 127.35 ... 0.83 0.17 0.18 34 79
[J2000]
7 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
147.91 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
80% total B light 6.81E+14 147.91 ... 0.83 0.17 0.18 34 79
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
181.97 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
90% total B light 6.81E+14 181.97 ... 0.83 0.17 0.18 34 79
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
84.14 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
50% total B light, major dia. 6.81E+14 84.14 ... 0.83 0.17 0.18 34 79
[J2000]
10 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
76.74 arcsec ... ... ... ... ... ... ... 50% total B light, aperture 6.81E+14 76.74 ... ... ... ... ... ...
11 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
14.61 arcsec ... ... ... ... ... ... ... B disk exp. scale length 6.81E+14 14.61 ... ... ... ... ... ...
12 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
0.04 arcsec ... ... 1.21 (a/b) ... ... ... 78.65
[B1950]
B exponential scale length 6.81E+14 0.04 ... 0.83 0.17 0.18 34 79
[J2000]
13 ESO-LV IIIa-F
1989ESOLV.C...0000L
0.00 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 0.00 ... ... ... ... ... ...


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J06035244-6934387       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 37.2       arcsec               2a = 74.40 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 59.52 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.800                         b/a = 0.80
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.20
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.22
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 37 deg
Position Angle [Equinox]      :   80   deg [J2000]                  80 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          : 90.968422       -69.577454    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J06035244-6934387 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 54.7 arcsec 2a = 109.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 87.52 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.800 b/a = 0.80 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.20 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.22 Uncertainty : ... ... Cos-1(b/a) : ... 37 deg Position Angle [Equinox] : 80 deg [J2000] 80 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 : 90.968422 -69.577454 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 151.36 arcsec 2a = 151.36 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 182.36 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported 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 : Microphotometer scan of photographic plate or film Measured Quantity : Isophotal diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 4 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 186.21 arcsec 2a = 186.21 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 224.35 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 26.0 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 : Microphotometer scan of photographic plate or film Measured Quantity : Isophotal diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 5 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 229.09 arcsec 2a = 229.09 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 276.01 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 27.0 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 : Microphotometer scan of photographic plate or film Measured Quantity : Isophotal diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 6 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 127.35 arcsec 2a = 127.35 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 153.43 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 70% total B light 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 : Microphotometer scan of photographic plate or film Measured Quantity : Isophotal diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 7 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 147.91 arcsec 2a = 147.91 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 178.20 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 80% total B light 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 : Microphotometer scan of photographic plate or film Measured Quantity : Isophotal diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 8 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 181.97 arcsec 2a = 181.97 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 219.24 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 90% total B light 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 : Microphotometer scan of photographic plate or film Measured Quantity : Isophotal diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 9 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 84.14 arcsec 2a = 84.14 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 101.37 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 50% total B light, major dia. 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 : Microphotometer scan of photographic plate or film Measured Quantity : Half-light ("effective") diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 10 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 76.74 arcsec 2a = 76.74 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 : 50% total B light, aperture 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 : Microphotometer scan of photographic plate or film Measured Quantity : Half-light ("effective") diameter Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Circular aperture
No. 11 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 14.61 arcsec 2a = 14.61 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 : B disk exp. scale length 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 : Microphotometer scan of photographic plate or film Measured Quantity : Scale length Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : From fits to surf. brightness in octants
No. 12 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 0.04 arcsec 2a = 0.04 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 0.05 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.83 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.17 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.18 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 78.65 deg [B1950] 79 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : B exponential scale length 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 : Microphotometer scan of photographic plate or film Measured Quantity : Scale length Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF
No. 13 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 0570680 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 0.00 arcsec 2a = 0.00 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 : R exponential scale length Frequency : 6400 A 4.68E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Photographic plate, print, or film Fitting Technique : Microphotometer scan of photographic plate or film Measured Quantity : Scale length Coordinates Targeted : 91.058334 -69.578331 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF

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