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Date and Time of the Query: 2019-05-19 T17:55:22 PDT
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Diameter data point(s) for object NGC 3311

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 POSS1 103a-O
1968MCG4..C...0000V
0.30 arcmin 0.30 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 18.00 ... 1.00 0.00 0.00 0 ...
2 ESO-Uppsala "Quick Blue" IIa-O
1982ESOU..C...0000L
2.80 arcmin 2.40 arcmin ... ... ... ... ... About 25.5 B-mag arcsec^-2^ 6.81E+14 168.00 ... 0.86 0.14 0.15 31 ...
3 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
239.88 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 239.88 ... 0.88 0.12 0.13 29 11
[J2000]
4 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
346.74 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 346.74 ... 0.88 0.12 0.13 29 11
[J2000]
5 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
457.09 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
27.0 B-mag arcsec^-2^ 6.81E+14 457.09 ... 0.88 0.12 0.13 29 11
[J2000]
6 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
239.88 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
70% total B light 6.81E+14 239.88 ... 0.88 0.12 0.13 29 11
[J2000]
7 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
302.00 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
80% total B light 6.81E+14 302.00 ... 0.88 0.12 0.13 29 11
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
393.55 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
90% total B light 6.81E+14 393.55 ... 0.88 0.12 0.13 29 11
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
156.68 arcsec ... ... 1.14 (a/b) ... ... ... 10.97
[B1950]
50% total B light, major dia. 6.81E+14 156.68 ... 0.88 0.12 0.13 29 11
[J2000]
10 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
144.54 arcsec ... ... ... ... ... ... ... 50% total B light, aperture 6.81E+14 144.54 ... ... ... ... ... ...
11 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
27.34 arcsec ... ... ... ... ... ... ... B disk exp. scale length 6.81E+14 27.34 ... ... ... ... ... ...
12 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
1.53 arcsec ... ... 1.05 (a/b) ... ... ... 28.94
[B1950]
B exponential scale length 6.81E+14 1.53 ... 0.95 0.05 0.05 18 29
[J2000]
13 ESO-LV IIIa-F
1989ESOLV.C...0000L
0.34 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 0.34 ... ... ... ... ... ...
14 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.54 log(2a) + 1 ... ... 0.08
log(a/b)
0.04 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 208.00 20.10 0.83 0.17 0.18 34 ...
15 RC3 A_e (Johnson B)
1991RC3.9.C...0000d
1.05 log(2a) + 1 ... ... ... 0.02 ... ... ... ... 6.81E+14 67.30 3.20 ... ... ... ... ...
16 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.54 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 208.00 ... ... ... ... ... ...
17 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
66.8 (a) arcsec ... ... 0.910 (b/a) ... ... ... 57.5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 133.60 ... 0.91 0.09 0.09 24 58
[J2000]
18 K_s (LGA/2MASS "total")
2003AJ....125..525J
125.0 (a) arcsec ... ... 0.910 (b/a) ... ... ... 57.5
[J2000]
Diameter for "total" magnitude 1.38E+14 250.00 ... 0.91 0.09 0.09 24 58
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1968MCG4..C...0000V
Published Object Name         : MCG -04-25-036                
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 0.30       arcmin                   2a = 18.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.30      arcmin              2b = 18.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 1.00
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.00
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.00
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 0 deg
Position Angle [Equinox]      : ...                                 ...
Uncertainty                   : ...                                 ...
Significance                  : No uncertainty reported
Diameter Reference Level      : Very high surface brightness  
Frequency                     : 4050         A                      7.40E+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         : "Inner" diameter
Coordinates Targeted          : 103424          -2717    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1982ESOU..C...0000L Published Object Name : ESO 501- G 038 Frequency Targeted : ESO-Uppsala "Quick Blue" IIa-O Major Axis (2a) : 2.80 arcmin 2a = 168.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 2.40 arcmin 2b = 144.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.86 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.14 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.15 Uncertainty : ... ... Cos-1(b/a) : ... 31 deg Position Angle [Equinox] : ... ... 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 : 103422. -271606. (B1950) Qualifiers : From new, raw data NED Comment : Diameters flagged uncertain.
No. 3 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 239.88 arcsec 2a = 239.88 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 273.84 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 346.74 arcsec 2a = 346.74 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 395.82 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 457.09 arcsec 2a = 457.09 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 521.79 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 239.88 arcsec 2a = 239.88 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 273.84 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 302.00 arcsec 2a = 302.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 344.75 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 393.55 arcsec 2a = 393.55 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 449.26 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 156.68 arcsec 2a = 156.68 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 178.86 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.14 b/a = 0.88 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.12 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.13 Uncertainty : ... ... Cos-1(b/a) : ... 29 deg Position Angle [Equinox] : 10.97 deg [B1950] 11 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 144.54 arcsec 2a = 144.54 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 27.34 arcsec 2a = 27.34 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 1.53 arcsec 2a = 1.53 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 1.61 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.05 b/a = 0.95 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.05 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.05 Uncertainty : ... ... Cos-1(b/a) : ... 18 deg Position Angle [Equinox] : 28.94 deg [B1950] 29 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 : 158.591660 -27.268333 (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 5010380 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 0.34 arcsec 2a = 0.34 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 : 158.591660 -27.268333 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF
No. 14 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 501- G 038 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.54 2a = 208.00 arcsec Uncertainty : 0.04 20.10 arcsec Minor Axis (2b) : ... 2b = 173.06 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.08 b/a = 0.83 Uncertainty : 0.04 0.08 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] : ... ... 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 : 103643.3 -273141. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 15 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 501- G 038 Frequency Targeted : RC3 A_e (Johnson B) Major Axis (2a) : log(2a) + 1 = 1.05 2a = 67.30 arcsec Uncertainty : 0.02 3.20 arcsec Minor Axis (2b) : ... ... Uncertainty : ... ... Axis Ratio : ... ... Uncertainty : ... ... Ellipticity : ... ... Uncertainty : ... ... Eccentricity : ... ... Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : Mean error Diameter Reference Level : ... 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 : 103643.3 -273141. (J2000) Qualifiers : From new, raw data NED Comment : From magnitude-aperture curves.
No. 16 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 501- G 038 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.54 2a = 208.00 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 : 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 : 103643.3 -273141. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 17 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3311 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 66.8 arcsec 2a = 133.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 121.58 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.910 b/a = 0.91 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.09 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.09 Uncertainty : ... ... Cos-1(b/a) : ... 24 deg Position Angle [Equinox] : 57.5 deg [J2000] 58 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 : 159.178421 -27.528339 (J2000) Qualifiers : From new, raw data NED Comment :
No. 18 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 3311 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 125.0 arcsec 2a = 250.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 227.50 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.910 b/a = 0.91 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.09 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.09 Uncertainty : ... ... Cos-1(b/a) : ... 24 deg Position Angle [Equinox] : 57.5 deg [J2000] 58 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 : 159.178421 -27.528339 (J2000) Qualifiers : From new, raw data NED Comment :

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