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Date and Time of the Query: 2019-05-24 T05:08:53 PDT
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Diameter data point(s) for object NGC 1549

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
3.60 arcmin 2.80 arcmin ... ... ... ... 135
[B1950]
About 25.5 B-mag arcsec^-2^ 6.81E+14 216.00 ... 0.78 0.22 0.25 39 135
[J2000]
2 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
319.89 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 319.89 ... 0.87 0.13 0.14 30 159
[J2000]
3 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
537.03 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 537.03 ... 0.87 0.13 0.14 30 159
[J2000]
4 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
794.33 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
27.0 B-mag arcsec^-2^ 6.81E+14 794.33 ... 0.87 0.13 0.14 30 159
[J2000]
5 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
254.10 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
70% total B light 6.81E+14 254.10 ... 0.87 0.13 0.14 30 159
[J2000]
6 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
398.11 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
80% total B light 6.81E+14 398.11 ... 0.87 0.13 0.14 30 159
[J2000]
7 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
616.59 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
90% total B light 6.81E+14 616.59 ... 0.87 0.13 0.14 30 159
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
117.49 arcsec ... ... 1.15 (a/b) ... ... ... 158.31
[B1950]
50% total B light, major dia. 6.81E+14 117.49 ... 0.87 0.13 0.14 30 159
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
109.65 arcsec ... ... ... ... ... ... ... 50% total B light, aperture 6.81E+14 109.65 ... ... ... ... ... ...
10 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
26.23 arcsec ... ... ... ... ... ... ... B disk exp. scale length 6.81E+14 26.23 ... ... ... ... ... ...
11 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
0.35 arcsec ... ... 1.11 (a/b) ... ... ... 141.52
[B1950]
B exponential scale length 6.81E+14 0.35 ... 0.90 0.10 0.10 26 142
[J2000]
12 ESO-LV IIIa-F
1989ESOLV.C...0000L
0.07 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 0.07 ... ... ... ... ... ...
13 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.69 log(2a) + 1 ... ... 0.08
log(a/b)
0.02 ... ... 135
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 293.90 13.80 0.83 0.17 0.18 34 135
[J2000]
14 RC3 A_e (Johnson B)
1991RC3.9.C...0000d
1.18 log(2a) + 1 ... ... ... 0.01 ... ... ... ... 6.81E+14 90.80 2.10 ... ... ... ... ...
15 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.67 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 280.60 ... ... ... ... ... ...
16 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
90.9 (a) arcsec ... ... 0.900 (b/a) ... ... ... -50.0
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 181.80 ... 0.90 0.10 0.10 26 130
[J2000]
17 K_s (LGA/2MASS "total")
2003AJ....125..525J
168.7 (a) arcsec ... ... 0.900 (b/a) ... ... ... -50.0
[J2000]
Diameter for "total" magnitude 1.38E+14 337.40 ... 0.90 0.10 0.10 26 130
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1982ESOU..C...0000L
Published Object Name         : ESO 157- G 016                
Frequency Targeted            : ESO-Uppsala "Quick Blue" IIa-O
Major Axis (2a)               : 3.60       arcmin                   2a = 216.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =   2.80     arcmin              2b = 168.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.78
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.22
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.25
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 39 deg
Position Angle [Equinox]      : 135    deg [B1950]                  135 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          : 041439.         -554254.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Diameters and PA flagged uncertain.     

No. 2 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 319.89 arcsec 2a = 319.89 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 368.96 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Elliptical isophote
No. 3 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 537.03 arcsec 2a = 537.03 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 619.41 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (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 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 794.33 arcsec 2a = 794.33 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 916.18 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (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 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 254.10 arcsec 2a = 254.10 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 293.08 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (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 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 398.11 arcsec 2a = 398.11 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 459.18 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (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 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 616.59 arcsec 2a = 616.59 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 711.18 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (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 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 117.49 arcsec 2a = 117.49 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 135.51 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.15 b/a = 0.87 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.13 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.14 Uncertainty : ... ... Cos-1(b/a) : ... 30 deg Position Angle [Equinox] : 158.31 deg [B1950] 159 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 : 63.662498 -55.715000 (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 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 109.65 arcsec 2a = 109.65 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 : 63.662498 -55.715000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Circular aperture
No. 10 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 26.23 arcsec 2a = 26.23 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 : 63.662498 -55.715000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : From fits to surf. brightness in octants
No. 11 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 1570160 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 0.35 arcsec 2a = 0.35 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 0.39 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.11 b/a = 0.90 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.10 Uncertainty : ... ... Cos-1(b/a) : ... 26 deg Position Angle [Equinox] : 141.52 deg [B1950] 142 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 : 63.662498 -55.715000 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : Derived scale length < 2" mean ESO-B PSF
No. 12 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 1570160 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 0.07 arcsec 2a = 0.07 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 : 63.662498 -55.715000 (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 : 1991RC3.9.C...0000d Published Object Name : ESO 157- G 016 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.69 2a = 293.90 arcsec Uncertainty : 0.02 13.80 arcsec Minor Axis (2b) : ... 2b = 244.52 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.08 b/a = 0.83 Uncertainty : 0.02 0.04 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] : 135 deg [J2000] 135 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 : 041545.1 -553531. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 14 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 157- G 016 Frequency Targeted : RC3 A_e (Johnson B) Major Axis (2a) : log(2a) + 1 = 1.18 2a = 90.80 arcsec Uncertainty : 0.01 2.10 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 : 041545.1 -553531. (J2000) Qualifiers : From new, raw data NED Comment : From magnitude-aperture curves.
No. 15 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 157- G 016 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.67 2a = 280.60 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 : 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 : 041545.1 -553531. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 16 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 1549 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 90.9 arcsec 2a = 181.80 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 163.62 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.900 b/a = 0.90 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.10 Uncertainty : ... ... Cos-1(b/a) : ... 26 deg Position Angle [Equinox] : -50.0 deg [J2000] 130 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 : 63.938431 -55.592361 (J2000) Qualifiers : From new, raw data NED Comment :
No. 17 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 1549 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 168.7 arcsec 2a = 337.40 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 303.66 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.900 b/a = 0.90 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.10 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.10 Uncertainty : ... ... Cos-1(b/a) : ... 26 deg Position Angle [Equinox] : -50.0 deg [J2000] 130 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 : 63.938431 -55.592361 (J2000) Qualifiers : From new, raw data NED Comment :

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