NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-02-16 T22:51:17 PST
Help | Comment | NED Home

Diameter data point(s) for object NGC 2668

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
1973UGC...C...0000N
1.60 arcmin 0.90 arcmin ... ... ... ... 155
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 96.00 ... 0.56 0.44 0.52 56 155
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
24.6 (a) arcsec ... ... 0.460 (b/a) ... ... ... -5
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 49.20 ... 0.46 0.54 0.65 63 175
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
52.3 (a) arcsec ... ... 0.460 (b/a) ... ... ... -5
[J2000]
Diameter for "total" magnitude 1.38E+14 104.50 ... 0.46 0.54 0.65 63 175
[J2000]
4 POSS1 103a-O
1964MCG2..C...0000V
0.25 arcmin 0.20 arcmin ... ... ... ... ... High surface brightness 7.40E+14 15.00 ... 0.80 0.20 0.22 37 ...
5 POSS1 103a-O
1964MCG2..C...0000V
1.00 arcmin 0.50 arcmin ... ... ... ... ... Moderate surface brightness 7.40E+14 60.00 ... 0.50 0.50 0.60 60 ...
6 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.08 log(2a) + 1 ... ... 0.27
log(a/b)
0.07 ... ... 155
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 72.10 12.60 0.54 0.46 0.55 58 155
[J2000]
7 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.09 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 73.80 ... ... ... ... ... ...
8 r (SDSS Isophotal)
2004SDSS3.C...0000:
39.55 (a) arcsec 24.35 arcsec ... ... ... ... 151.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 79.09 ... 0.62 0.38 0.45 52 152
[J2000]
9 r (SDSS Petrosian)
2004SDSS3.C...0000:
9.84 (a) arcsec ... ... ... 0.42 ... ... ... ... 4.77E+14 19.68 0.85 ... ... ... ... ...
10 r (SDSS de Vaucouleurs)
2004SDSS3.C...0000:
6.64 (a) arcsec ... ... 0.567 (b/a) 0.04 ... ... 162.2
[J2000]
... 4.77E+14 13.27 0.08 0.57 0.43 0.51 55 162
[J2000]
11 r (SDSS Exponential)
2004SDSS3.C...0000:
4.60 (a) arcsec ... ... 0.522 (b/a) 0.02 ... ... 160.9
[J2000]
... 4.77E+14 9.21 0.04 0.52 0.48 0.57 59 161
[J2000]
12 r (SDSS Isophotal)
2007SDSS6.C...0000:
39.55 (a) arcsec 24.35 arcsec ... ... ... ... 151.5
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 79.09 ... 0.62 0.38 0.45 52 152
[J2000]
13 r (SDSS Petrosian)
2007SDSS6.C...0000:
9.84 (a) arcsec ... ... ... 0.423 ... ... ... ... 4.77E+14 19.68 0.85 ... ... ... ... ...
14 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
6.6366 (a) arcsec ... ... 0.567 (b/a) 0.039 ... ... 162.2
[J2000]
... 4.77E+14 13.27 0.08 0.57 0.43 0.51 55 162
[J2000]
15 r (SDSS Exponential)
2007SDSS6.C...0000:
4.6026 (a) arcsec ... ... 0.522 (b/a) 0.020 ... ... 160.9
[J2000]
... 4.77E+14 9.21 0.04 0.52 0.48 0.57 59 161
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 04616                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 1.60       arcmin                   2a = 96.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.90      arcmin              2b = 54.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.56
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.44
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.52
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 56 deg
Position Angle [Equinox]      : 155    deg [B1950]                  155 deg [J2000]
Uncertainty                   : ...                                 ...
Significance                  : No uncertainty reported
Diameter Reference Level      : About 25.0 B-mag arcsec^-2^   
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          : 084612.         +365300.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   : Minor diameter flagged uncertain.       

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J08492256+3642375 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 24.6 arcsec 2a = 49.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 22.63 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.460 b/a = 0.46 Uncertainty : ... ... 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] : -5 deg [J2000] 175 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 : 132.343979 36.710396 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J08492256+3642375 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 52.3 arcsec 2a = 104.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 48.07 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.460 b/a = 0.46 Uncertainty : ... ... 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] : -5 deg [J2000] 175 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 : 132.343979 36.710396 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-20-007 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.25 arcmin 2a = 15.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.20 arcmin 2b = 12.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.80 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.20 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.22 Uncertainty : ... ... Cos-1(b/a) : ... 37 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 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 : 084612 +3655 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-20-007 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.00 arcmin 2a = 60.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.50 arcmin 2b = 30.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.50 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.50 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.60 Uncertainty : ... ... Cos-1(b/a) : ... 60 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Moderate 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 : 084612 +3655 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 04616 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.08 2a = 72.10 arcsec Uncertainty : 0.07 12.60 arcsec Minor Axis (2b) : ... 2b = 38.72 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.27 b/a = 0.54 Uncertainty : 0.06 0.08 Ellipticity : ... 1 - b/a = 0.46 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.55 Uncertainty : ... ... Cos-1(b/a) : ... 58 deg Position Angle [Equinox] : 155 deg [J2000] 155 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 : 084922.6 +364237. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 04616 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.09 2a = 73.80 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 : 084922.6 +364237. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 8 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J084922.57+364237.2 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 39.55 arcsec 2a = 79.09 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 24.35 arcsec 2b = 48.69 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.62 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 151.5 deg [J2000] 152 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 25.0 mag arcsec^-2^ Frequency : 6290 A 4.77E+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 : 132.3440247 36.7103271 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 9 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J084922.57+364237.2 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 9.84 arcsec 2a = 19.68 arcsec Uncertainty : 0.42 arcsec 0.85 arcsec Minor Axis (2b) : ... ... Uncertainty : ... ... Axis Ratio : ... ... Uncertainty : ... ... Ellipticity : ... ... Uncertainty : ... ... Eccentricity : ... ... Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Profile fitting to image Measured Quantity : See comments Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 132.3440247 36.7103271 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 10 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J084922.57+364237.2 Frequency Targeted : r (SDSS de Vaucouleurs) Major Axis (2a) : a = 6.64 arcsec 2a = 13.27 arcsec Uncertainty : 0.04 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 7.52 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.567 b/a = 0.57 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.43 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.51 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 162.2 deg [J2000] 162 deg [J2000] Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+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 : Half-light ("effective") diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 132.3440247 36.7103271 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 11 Published Units: Homogenized Units: Reference Code : 2004SDSS3.C...0000: Published Object Name : SDSS J084922.57+364237.2 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.60 arcsec 2a = 9.21 arcsec Uncertainty : 0.02 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 4.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.522 b/a = 0.52 Uncertainty : 0.003 0.00 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] : 160.9 deg [J2000] 161 deg [J2000] Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+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 : Half-light ("effective") diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 132.3440247 36.7103271 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084922.56+364237.1 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 39.55 arcsec 2a = 79.09 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 24.35 arcsec 2b = 48.70 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.62 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.38 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.45 Uncertainty : ... ... Cos-1(b/a) : ... 52 deg Position Angle [Equinox] : 151.5 deg [J2000] 152 deg [J2000] Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : 25.0 mag arcsec^-2^ Frequency : 6290 A 4.77E+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 : 132.3440147237 36.7103274022 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 13 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084922.56+364237.1 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 9.84 arcsec 2a = 19.68 arcsec Uncertainty : 0.423 arcsec 0.85 arcsec Minor Axis (2b) : ... ... Uncertainty : ... ... Axis Ratio : ... ... Uncertainty : ... ... Ellipticity : ... ... Uncertainty : ... ... Eccentricity : ... ... Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Maps (e.g., 2MASS, VLA, Sloan) Fitting Technique : Profile fitting to image Measured Quantity : See comments Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 132.3440147237 36.7103274022 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 14 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084922.56+364237.1 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 6.6366 arcsec 2a = 13.27 arcsec Uncertainty : 0.039 arcsec 0.08 arcsec Minor Axis (2b) : ... 2b = 7.53 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.567 b/a = 0.57 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.43 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.51 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 162.2 deg [J2000] 162 deg [J2000] Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+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 : Half-light ("effective") diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 132.3440147237 36.7103274022 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 15 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J084922.56+364237.1 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 4.6026 arcsec 2a = 9.21 arcsec Uncertainty : 0.020 arcsec 0.04 arcsec Minor Axis (2b) : ... 2b = 4.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.522 b/a = 0.52 Uncertainty : 0.003 0.00 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] : 160.9 deg [J2000] 161 deg [J2000] Uncertainty : ... ... Significance : Based on count statistics only Diameter Reference Level : ... Frequency : 6290 A 4.77E+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 : Half-light ("effective") diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : 132.3440147237 36.7103274022 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius

Back to NED Home