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Date and Time of the Query: 2019-04-24 T18:06:36 PDT
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Diameter data point(s) for object NGC 3882

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 ESO-Uppsala "Quick Blue" IIa-O
1982ESOU..C...0000L
3.00 arcmin 1.80 arcmin ... ... ... ... 126
[B1950]
About 25.5 B-mag arcsec^-2^ 6.81E+14 180.00 ... 0.60 0.40 0.47 53 126
[J2000]
2 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.37 log(2a) + 1 ... ... 0.24
log(a/b)
0.05 ... ... 126
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 140.70 17.20 0.57 0.43 0.50 55 126
[J2000]
3 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.52 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 198.70 ... ... ... ... ... ...
4 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
69.4 (a) arcsec ... ... 0.610 (b/a) ... ... ... -49.0
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 138.80 ... 0.61 0.39 0.46 52 131
[J2000]
5 K_s (LGA/2MASS "total")
2003AJ....125..525J
116.1 (a) arcsec ... ... 0.610 (b/a) ... ... ... -49.0
[J2000]
Diameter for "total" magnitude 1.38E+14 232.20 ... 0.61 0.39 0.46 52 131
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1982ESOU..C...0000L
Published Object Name         : ESO 170- G 011                
Frequency Targeted            : ESO-Uppsala "Quick Blue" IIa-O
Major Axis (2a)               : 3.00       arcmin                   2a = 180.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =   1.80     arcmin              2b = 108.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.60
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.40
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.47
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 53 deg
Position Angle [Equinox]      : 126    deg [B1950]                  126 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          : 114339.         -560648.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Diameters and PA flagged uncertain.     

No. 2 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 170- G 011 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.37 2a = 140.70 arcsec Uncertainty : 0.05 17.20 arcsec Minor Axis (2b) : ... 2b = 80.90 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.24 b/a = 0.57 Uncertainty : 0.07 0.10 Ellipticity : ... 1 - b/a = 0.43 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.50 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 126 deg [J2000] 126 deg [J2000] 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 : 114606.2 -562328. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 170- G 011 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.52 2a = 198.70 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 : 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 : 114606.2 -562328. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 4 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3882 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 69.4 arcsec 2a = 138.80 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 84.67 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.610 b/a = 0.61 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.39 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.46 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : -49.0 deg [J2000] 131 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 : 176.526932 -56.391109 (J2000) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3882 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 116.1 arcsec 2a = 232.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 141.64 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.610 b/a = 0.61 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.39 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.46 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : -49.0 deg [J2000] 131 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 : 176.526932 -56.391109 (J2000) Qualifiers : From new, raw data NED Comment :

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