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Date and Time of the Query: 2022-01-19 T05:41:17 PST
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Diameter data point(s) for object ESO 486- G 021

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
1.20 arcmin 0.80 arcmin ... ... ... ... ... Low surface brightness 7.40E+14 72.00 ... 0.67 0.33 0.38 48 ...
2 ESO-Uppsala "Quick Blue" IIa-O
1982ESOU..C...0000L
1.40 arcmin 1.00 arcmin ... ... ... ... 107
[B1950]
About 25.5 B-mag arcsec^-2^ 6.81E+14 84.00 ... 0.71 0.29 0.32 44 107
[J2000]
3 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
70.79 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
25.0 B-mag arcsec^-2^ 6.81E+14 70.79 ... 0.71 0.29 0.32 44 107
[J2000]
4 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
88.10 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
26.0 B-mag arcsec^-2^ 6.81E+14 88.10 ... 0.71 0.29 0.32 44 107
[J2000]
5 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
102.33 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
27.0 B-mag arcsec^-2^ 6.81E+14 102.33 ... 0.71 0.29 0.32 44 107
[J2000]
6 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
44.67 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
70% total B light 6.81E+14 44.67 ... 0.71 0.29 0.32 44 107
[J2000]
7 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
53.70 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
80% total B light 6.81E+14 53.70 ... 0.71 0.29 0.32 44 107
[J2000]
8 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
69.18 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
90% total B light 6.81E+14 69.18 ... 0.71 0.29 0.32 44 107
[J2000]
9 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
31.99 arcsec ... ... 1.40 (a/b) ... ... ... 107.00
[B1950]
50% total B light, major dia. 6.81E+14 31.99 ... 0.71 0.29 0.32 44 107
[J2000]
10 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
27.54 arcsec ... ... ... ... ... ... ... 50% total B light, aperture 6.81E+14 27.54 ... ... ... ... ... ...
11 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
10.73 arcsec ... ... ... ... ... ... ... B disk exp. scale length 6.81E+14 10.73 ... ... ... ... ... ...
12 ESO-LV "Quick Blue" IIa-O
1989ESOLV.C...0000L
11.72 arcsec ... ... 1.63 (a/b) ... ... ... 108.82
[B1950]
B exponential scale length 6.81E+14 11.72 ... 0.61 0.39 0.45 52 109
[J2000]
13 ESO-LV IIIa-F
1989ESOLV.C...0000L
10.83 arcsec ... ... ... ... ... ... ... R exponential scale length 4.68E+14 10.83 ... ... ... ... ... ...
14 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.08 log(2a) + 1 ... ... 0.16
log(a/b)
0.05 ... ... 107
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 72.10 8.80 0.69 0.31 0.35 46 107
[J2000]
15 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.08 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 72.10 ... ... ... ... ... ...


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1968MCG4..C...0000V
Published Object Name         : MCG -04-12-041                
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.20       arcmin                   2a = 72.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.80      arcmin              2b = 48.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.67
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.33
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.38
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 48 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          : 050118          -2529    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1982ESOU..C...0000L Published Object Name : ESO 486- G 021 Frequency Targeted : ESO-Uppsala "Quick Blue" IIa-O Major Axis (2a) : 1.40 arcmin 2a = 84.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.00 arcmin 2b = 60.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107 deg [B1950] 107 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 : 050117. -252936. (B1950) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1989ESOLV.C...0000L Published Object Name : ESO-LV 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 70.79 arcsec 2a = 70.79 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 99.15 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 88.10 arcsec 2a = 88.10 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 123.39 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 102.33 arcsec 2a = 102.33 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 143.32 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 44.67 arcsec 2a = 44.67 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 62.56 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 53.70 arcsec 2a = 53.70 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 75.21 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 69.18 arcsec 2a = 69.18 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 96.89 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 31.99 arcsec 2a = 31.99 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 44.80 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.40 b/a = 0.71 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.29 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.32 Uncertainty : ... ... Cos-1(b/a) : ... 44 deg Position Angle [Equinox] : 107.00 deg [B1950] 107 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 27.54 arcsec 2a = 27.54 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 10.73 arcsec 2a = 10.73 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV "Quick Blue" IIa-O Major Axis (2a) : 11.72 arcsec 2a = 11.72 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 19.06 arcsec Uncertainty : ... ... Axis Ratio : a/b = 1.63 b/a = 0.61 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.39 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 108.82 deg [B1950] 109 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 : 75.320831 -25.493334 (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 4860210 Frequency Targeted : ESO-LV IIIa-F Major Axis (2a) : 10.83 arcsec 2a = 10.83 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 : 75.320831 -25.493334 (B1950) Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment : From fits to surf. brightness in octants
No. 14 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : ESO 486- G 021 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.08 2a = 72.10 arcsec Uncertainty : 0.05 8.80 arcsec Minor Axis (2b) : ... 2b = 49.89 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.16 b/a = 0.69 Uncertainty : 0.04 0.07 Ellipticity : ... 1 - b/a = 0.31 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.35 Uncertainty : ... ... Cos-1(b/a) : ... 46 deg Position Angle [Equinox] : 107 deg [J2000] 107 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 : 050320.0 -252526. (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 486- G 021 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.08 2a = 72.10 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 : 050320.0 -252526. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.

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