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Date and Time of the Query: 2019-06-20 T07:33:00 PDT
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Diameter data point(s) for object NGC 1392

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.......:
5.5 (a) arcsec ... ... 0.740 (b/a) ... ... ... 35
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 11.00 ... 0.74 0.26 0.29 42 35
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
10.7 (a) arcsec ... ... 0.740 (b/a) ... ... ... 35
[J2000]
Diameter for "total" magnitude 1.38E+14 21.40 ... 0.74 0.26 0.29 42 35
[J2000]
3 ESO-Uppsala "Quick Blue" IIa-O
1982ESOU..C...0000L
1.00 arcmin 0.70 arcmin ... ... ... ... 20
[B1950]
About 25.5 B-mag arcsec^-2^ 6.81E+14 60.00 ... 0.70 0.30 0.34 46 20
[J2000]
4 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
17.78 arcsec ... ... 1.43 (a/b) ... ... ... 20.00
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 17.78 ... 0.70 0.30 0.34 46 20
[J2000]
5 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
20.89 arcsec ... ... 1.43 (a/b) ... ... ... 20.00
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 20.89 ... 0.70 0.30 0.34 46 20
[J2000]
6 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
23.71 arcsec ... ... 1.43 (a/b) ... ... ... 20.00
[B1950]
27.0 B-mag arcsec^-2^ 6.81E+14 23.71 ... 0.70 0.30 0.34 46 20
[J2000]
7 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
11.35 arcsec ... ... 1.43 (a/b) ... ... ... 20.00
[B1950]
80% total B light 6.81E+14 11.35 ... 0.70 0.30 0.34 46 20
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
14.45 arcsec ... ... 1.43 (a/b) ... ... ... 20.00
[B1950]
90% total B light 6.81E+14 14.45 ... 0.70 0.30 0.34 46 20
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
0.71 arcsec ... ... 1.35 (a/b) ... ... ... 49.48
[B1950]
B exponential scale length 6.81E+14 0.71 ... 0.74 0.26 0.29 42 50
[J2000]
10 ESO-LV IIIa-F
1989ESOLV.C...0000L
0.38 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 0.38 ... ... ... ... ... ...


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J03374699-3608507       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 5.5        arcsec               2a = 11.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 8.14 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.740                         b/a = 0.74
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.26
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.29
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 42 deg
Position Angle [Equinox]      :   35   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          : 54.445892       -36.147423    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J03374699-3608507 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 10.7 arcsec 2a = 21.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 15.84 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.740 b/a = 0.74 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.26 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.29 Uncertainty : ... ... Cos-1(b/a) : ... 42 deg Position Angle [Equinox] : 35 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 : 54.445892 -36.147423 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1982ESOU..C...0000L Published Object Name : ESO 358- G 040 Frequency Targeted : ESO-Uppsala "Quick Blue" IIa-O Major Axis (2a) : 1.00 arcmin 2a = 60.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.70 arcmin 2b = 42.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 20 deg [B1950] 20 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : About 25.5 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 : "Outer" diameter Coordinates Targeted : 033553. -361836. (B1950) Qualifiers : From new, raw data NED Comment : Diameters flagged uncertain.
No. 4 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 3580400 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 17.78 arcsec 2a = 17.78 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 25.40 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.43 b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 53.970833 -36.310001 (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 3580400 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 20.89 arcsec 2a = 20.89 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 29.84 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.43 b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 53.970833 -36.310001 (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 3580400 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 23.71 arcsec 2a = 23.71 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 33.87 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.43 b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 53.970833 -36.310001 (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 3580400 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 11.35 arcsec 2a = 11.35 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 16.21 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.43 b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 53.970833 -36.310001 (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 3580400 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 14.45 arcsec 2a = 14.45 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 20.64 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.43 b/a = 0.70 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.30 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.34 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 53.970833 -36.310001 (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 3580400 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 0.71 arcsec 2a = 0.71 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 0.96 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.35 b/a = 0.74 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.26 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.29 Uncertainty : ... ... Cos-1(b/a) : ... 42 deg Position Angle [Equinox] : 49.48 deg [B1950] 50 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 : 53.970833 -36.310001 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF
No. 10 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 3580400 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 0.38 arcsec 2a = 0.38 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 : 53.970833 -36.310001 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF

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