NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-17 T02:57:03 PDT
Help | Comment | NED Home

Diameter data point(s) for object IC 0987

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
1964MCG2..C...0000V
0.45 arcmin 0.20 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 27.00 ... 0.44 0.56 0.67 64 ...
2 POSS1 103a-O
1964MCG2..C...0000V
1.20 arcmin 0.50 arcmin ... ... ... ... ... High surface brightness 7.40E+14 72.00 ... 0.42 0.58 0.70 65 ...
3 r (SDSS Isophotal)
2007SDSS6.C...0000:
24.35 (a) arcsec 16.32 arcsec ... ... ... ... 69.2
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 48.71 ... 0.67 0.33 0.38 48 69
[J2000]
4 r (SDSS Petrosian)
2007SDSS6.C...0000:
6.00 (a) arcsec ... ... ... 0.223 ... ... ... ... 4.77E+14 11.99 0.45 ... ... ... ... ...
5 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
6.1707 (a) arcsec ... ... 0.551 (b/a) 0.046 ... ... 83.3
[J2000]
... 4.77E+14 12.34 0.09 0.55 0.45 0.53 57 83
[J2000]
6 r (SDSS Exponential)
2007SDSS6.C...0000:
2.9139 (a) arcsec ... ... 0.531 (b/a) 0.014 ... ... 83.3
[J2000]
... 4.77E+14 5.83 0.03 0.53 0.47 0.56 58 83
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1964MCG2..C...0000V
Published Object Name         : MCG +03-36-078                
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 0.45       arcmin                   2a = 27.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  0.20      arcmin              2b = 12.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.44
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.56
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.67
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 64 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          : 140906          +1925    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +03-36-078 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 1.20 arcmin 2a = 72.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.50 arcmin 2b = 30.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.42 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.58 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.70 Uncertainty : ... ... Cos-1(b/a) : ... 65 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 : "Outer" diameter Coordinates Targeted : 140906 +1925 (B1950) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J141131.88+191020.2 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 24.35 arcsec 2a = 48.71 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 16.32 arcsec 2b = 32.65 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] : 69.2 deg [J2000] 69 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 : 212.8828379324 19.1722828122 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J141131.88+191020.2 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 6.00 arcsec 2a = 11.99 arcsec Uncertainty : 0.223 arcsec 0.45 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 : 212.8828379324 19.1722828122 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J141131.88+191020.2 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 6.1707 arcsec 2a = 12.34 arcsec Uncertainty : 0.046 arcsec 0.09 arcsec Minor Axis (2b) : ... 2b = 6.80 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.551 b/a = 0.55 Uncertainty : 0.004 0.00 Ellipticity : ... 1 - b/a = 0.45 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.53 Uncertainty : ... ... Cos-1(b/a) : ... 57 deg Position Angle [Equinox] : 83.3 deg [J2000] 83 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 : 212.8828379324 19.1722828122 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 6 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J141131.88+191020.2 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 2.9139 arcsec 2a = 5.83 arcsec Uncertainty : 0.014 arcsec 0.03 arcsec Minor Axis (2b) : ... 2b = 3.09 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.531 b/a = 0.53 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.47 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.56 Uncertainty : ... ... Cos-1(b/a) : ... 58 deg Position Angle [Equinox] : 83.3 deg [J2000] 83 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 : 212.8828379324 19.1722828122 (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