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Date and Time of the Query: 2019-07-15 T19:20:12 PDT
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Diameter data point(s) for object NGC 4988

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.......:
32.3 (a) arcsec ... ... 0.400 (b/a) ... ... ... 25
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 64.60 ... 0.40 0.60 0.72 66 25
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
6.4 (a) arcsec ... ... 0.700 (b/a) ... ... ... 25
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 12.80 ... 0.70 0.30 0.34 46 25
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
48.7 (a) arcsec ... ... 0.400 (b/a) ... ... ... 25
[J2000]
Diameter for "total" magnitude 1.38E+14 97.40 ... 0.40 0.60 0.72 66 25
[J2000]
4 K_s (2MASS "total")
20032MASX.C.......:
11.8 (a) arcsec ... ... 0.700 (b/a) ... ... ... 25
[J2000]
Diameter for "total" magnitude 1.38E+14 23.50 ... 0.70 0.30 0.34 46 25
[J2000]
5 POSS1 103a-E
1974MCG5..C...0000V
0.5 arcmin 0.2 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 30.00 ... 0.40 0.60 0.72 66 ...
6 POSS1 103a-E
1974MCG5..C...0000V
1.1 arcmin 0.4 arcmin ... ... ... ... ... Low surface brightness 7.40E+14 66.00 ... 0.36 0.64 0.77 69 ...
7 ESO-Uppsala "Quick Blue" IIa-O
1982ESOU..C...0000L
2.00 arcmin 0.70 arcmin ... ... ... ... 26
[B1950]
About 25.5 B-mag arcsec^-2^ 6.81E+14 120.00 ... 0.35 0.65 0.78 70 26
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
102.33 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 102.33 ... 0.32 0.68 0.81 71 20
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
128.82 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 128.82 ... 0.32 0.68 0.81 71 20
[J2000]
10 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
151.36 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
27.0 B-mag arcsec^-2^ 6.81E+14 151.36 ... 0.32 0.68 0.81 71 20
[J2000]
11 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
44.16 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
70% total B light 6.81E+14 44.16 ... 0.32 0.68 0.81 71 20
[J2000]
12 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
59.57 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
80% total B light 6.81E+14 59.57 ... 0.32 0.68 0.81 71 20
[J2000]
13 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
85.11 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
90% total B light 6.81E+14 85.11 ... 0.32 0.68 0.81 71 20
[J2000]
14 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
23.99 arcsec ... ... 3.10 (a/b) ... ... ... 20.00
[B1950]
50% total B light, major dia. 6.81E+14 23.99 ... 0.32 0.68 0.81 71 20
[J2000]
15 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
14.79 arcsec ... ... ... ... ... ... ... 50% total B light, aperture 6.81E+14 14.79 ... ... ... ... ... ...
16 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
8.60 arcsec ... ... ... ... ... ... ... B disk exp. scale length 6.81E+14 8.60 ... ... ... ... ... ...
17 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
0.13 arcsec ... ... 2.19 (a/b) ... ... ... 26.06
[B1950]
B exponential scale length 6.81E+14 0.13 ... 0.46 0.54 0.66 63 26
[J2000]
18 ESO-LV IIIa-F
1989ESOLV.C...0000L
0.97 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 0.97 ... ... ... ... ... ...
19 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.23 log(2a) + 1 ... ... 0.54
log(a/b)
0.05 ... ... 26
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 101.90 12.40 0.29 0.71 0.85 73 26
[J2000]
20 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.18 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 90.80 ... ... ... ... ... ...


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J13095440-4306204       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 32.3       arcsec               2a = 64.60 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 25.84 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.400                         b/a = 0.40
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.60
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.72
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 66 deg
Position Angle [Equinox]      :   25   deg [J2000]                  25 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          : 197.476578      -43.105721    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13095623-4306274 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 6.4 arcsec 2a = 12.80 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 8.96 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.700 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] : 25 deg [J2000] 25 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 : 197.484299 -43.107662 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13095440-4306204 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 48.7 arcsec 2a = 97.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 38.96 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.400 b/a = 0.40 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.72 Uncertainty : ... ... Cos-1(b/a) : ... 66 deg Position Angle [Equinox] : 25 deg [J2000] 25 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 : 197.476578 -43.105721 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J13095623-4306274 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 11.8 arcsec 2a = 23.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 16.45 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.700 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] : 25 deg [J2000] 25 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 : 197.484299 -43.107662 (J2000) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1974MCG5..C...0000V Published Object Name : MCG -07-27-037 Frequency Targeted : POSS1 103a-E Major Axis (2a) : 0.5 arcmin 2a = 30.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.2 arcmin 2b = 12.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.40 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.60 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.72 Uncertainty : ... ... Cos-1(b/a) : ... 66 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 : 130712 -4248 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1974MCG5..C...0000V Published Object Name : MCG -07-27-037 Frequency Targeted : POSS1 103a-E Major Axis (2a) : 1.1 arcmin 2a = 66.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.4 arcmin 2b = 24.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.36 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.64 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.77 Uncertainty : ... ... Cos-1(b/a) : ... 69 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Low 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 : "Outer" diameter Coordinates Targeted : 130712 -4248 (B1950) Qualifiers : From new, raw data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 1982ESOU..C...0000L Published Object Name : ESO 269- G 055 Frequency Targeted : ESO-Uppsala "Quick Blue" IIa-O Major Axis (2a) : 2.00 arcmin 2a = 120.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.70 arcmin 2b = 42.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.35 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.65 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.78 Uncertainty : ... ... Cos-1(b/a) : ... 70 deg Position Angle [Equinox] : 26 deg [B1950] 26 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 : 130702. -425024. (B1950) Qualifiers : From new, raw data NED Comment : Diameters flagged uncertain.
No. 8 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 102.33 arcsec 2a = 102.33 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 316.81 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 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 : 196.758331 -42.840000 (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 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 128.82 arcsec 2a = 128.82 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 398.82 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 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 : 196.758331 -42.840000 (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 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 151.36 arcsec 2a = 151.36 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 468.61 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 11 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 44.16 arcsec 2a = 44.16 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 136.72 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 12 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 59.57 arcsec 2a = 59.57 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 184.43 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 13 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 85.11 arcsec 2a = 85.11 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 263.50 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 14 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 23.99 arcsec 2a = 23.99 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 74.27 arcsec Uncertainty : ... ... Axis Ratio : a/b = 3.10 b/a = 0.32 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.68 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.81 Uncertainty : ... ... Cos-1(b/a) : ... 71 deg Position Angle [Equinox] : 20.00 deg [B1950] 20 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 15 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 14.79 arcsec 2a = 14.79 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Circular aperture
No. 16 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 8.60 arcsec 2a = 8.60 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : From fits to surf. brightness in octants
No. 17 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 0.13 arcsec 2a = 0.13 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 0.29 arcsec Uncertainty : ... ... Axis Ratio : a/b = 2.19 b/a = 0.46 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.66 Uncertainty : ... ... Cos-1(b/a) : ... 63 deg Position Angle [Equinox] : 26.06 deg [B1950] 26 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF
No. 18 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 2690550 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 0.97 arcsec 2a = 0.97 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 : 196.758331 -42.840000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF
No. 19 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 269- G 055 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.23 2a = 101.90 arcsec Uncertainty : 0.05 12.40 arcsec Minor Axis (2b) : ... 2b = 29.35 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.54 b/a = 0.29 Uncertainty : 0.04 0.03 Ellipticity : ... 1 - b/a = 0.71 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.85 Uncertainty : ... ... Cos-1(b/a) : ... 73 deg Position Angle [Equinox] : 26 deg [J2000] 26 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 : 130954.1 -430622. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 20 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 269- G 055 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.18 2a = 90.80 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 : 130954.1 -430622. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.

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