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Date and Time of the Query: 2019-02-22 T19:51:25 PST
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Diameter data point(s) for object NGC 7268 NED01

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.......:
36.3 (a) arcsec ... ... 0.520 (b/a) ... ... ... 80
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 72.60 ... 0.52 0.48 0.57 59 80
[J2000]
2 K_s (2MASS "total")
20032MASX.C.......:
53.8 (a) arcsec ... ... 0.520 (b/a) ... ... ... 80
[J2000]
Diameter for "total" magnitude 1.38E+14 107.60 ... 0.52 0.48 0.57 59 80
[J2000]
3 POSS1 103a-O
1968MCG4..C...0000V
0.25 arcmin 0.25 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 15.00 ... 1.00 0.00 0.00 0 ...
4 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
71.61 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 71.61 ... 0.82 0.18 0.19 34 66
[J2000]
5 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
100.00 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 100.00 ... 0.82 0.18 0.19 34 66
[J2000]
6 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
41.69 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
70% total B light 6.81E+14 41.69 ... 0.82 0.18 0.19 34 66
[J2000]
7 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
53.70 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
80% total B light 6.81E+14 53.70 ... 0.82 0.18 0.19 34 66
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
71.61 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
90% total B light 6.81E+14 71.61 ... 0.82 0.18 0.19 34 66
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
26.00 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
50% total B light, major dia. 6.81E+14 26.00 ... 0.82 0.18 0.19 34 66
[J2000]
10 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
38.90 arcsec ... ... ... ... ... ... ... 50% total B light, aperture 6.81E+14 38.90 ... ... ... ... ... ...
11 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
0.43 arcsec ... ... 1.21 (a/b) ... ... ... 65.70
[B1950]
B exponential scale length 6.81E+14 0.43 ... 0.82 0.18 0.19 34 66
[J2000]
12 ESO-LV IIIa-F
1989ESOLV.C...0000L
0.08 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 0.08 ... ... ... ... ... ...
13 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
0.97 log(2a) + 1 ... ... 0.34
log(a/b)
0.07 ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 56.00 9.80 0.46 0.54 0.65 63 ...
14 RC3 D_0 (blue)
1991RC3.9.C...0000d
0.87 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 44.50 ... ... ... ... ... ...


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 20032MASX.C.......:
Published Object Name         : 2MASX J22254072-3112024       
Frequency Targeted            : K_s (2MASS isophotal)         
Major Axis (2a)               : a = 36.3       arcsec               2a = 72.60 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : ...                                 2b = 37.75 arcsec
Uncertainty                   : ...                                 ...
Axis Ratio                    : b/a = 0.520                         b/a = 0.52
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.48
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.57
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 59 deg
Position Angle [Equinox]      :   80   deg [J2000]                  80 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          : 336.419678      -31.200747    (J2000)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J22254072-3112024 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 53.8 arcsec 2a = 107.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 55.95 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.520 b/a = 0.52 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.48 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.57 Uncertainty : ... ... Cos-1(b/a) : ... 59 deg Position Angle [Equinox] : 80 deg [J2000] 80 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 : 336.419678 -31.200747 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1968MCG4..C...0000V Published Object Name : MCG -05-53-001 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.25 arcmin 2a = 15.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.25 arcmin 2b = 15.00 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 : 222306 -3130 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 71.61 arcsec 2a = 71.61 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 86.80 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 100.00 arcsec 2a = 100.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 121.21 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 41.69 arcsec 2a = 41.69 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 50.53 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 53.70 arcsec 2a = 53.70 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 65.09 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 71.61 arcsec 2a = 71.61 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 86.80 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 26.00 arcsec 2a = 26.00 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 31.52 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 38.90 arcsec 2a = 38.90 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 0.43 arcsec 2a = 0.43 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 0.52 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.21 b/a = 0.82 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.18 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.19 Uncertainty : ... ... Cos-1(b/a) : ... 34 deg Position Angle [Equinox] : 65.70 deg [B1950] 66 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 : 335.712494 -31.455000 (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 4670570 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 0.08 arcsec 2a = 0.08 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 : 335.712494 -31.455000 (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 467-IG 057 NED01 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 0.97 2a = 56.00 arcsec Uncertainty : 0.07 9.80 arcsec Minor Axis (2b) : ... 2b = 25.59 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.34 b/a = 0.46 Uncertainty : 0.06 0.07 Ellipticity : ... 1 - b/a = 0.54 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.65 Uncertainty : ... ... Cos-1(b/a) : ... 63 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 : 222541.3 -311202. (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 467-IG 057 NED01 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 0.87 2a = 44.50 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 : 222541.3 -311202. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.

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