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Date and Time of the Query: 2018-07-23 T06:41:27 PDT
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Diameter data point(s) for object NGC 4395

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
16.00 arcmin 13.00 arcmin ... ... ... ... ... About 25.0 B-mag arcsec^-2^ 7.40E+14 960.00 ... 0.81 0.19 0.21 36 ...
2 POSS1 103a-O
1964MCG2..C...0000V
2.00 arcmin 1.00 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 120.00 ... 0.50 0.50 0.60 60 ...
3 POSS1 103a-O
1964MCG2..C...0000V
12.00 arcmin 11.00 arcmin ... ... ... ... ... Very low surface brightness 7.40E+14 720.00 ... 0.92 0.08 0.09 24 ...
4 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
2.12 log(2a) + 1 ... ... 0.08
log(a/b)
0.01 ... ... 147
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 791.00 18.40 0.83 0.17 0.18 34 147
[J2000]
5 RC3 A_e (Johnson B)
1991RC3.9.C...0000d
1.76 log(2a) + 1 ... ... ... 0.02 ... ... ... ... 6.81E+14 345.30 16.30 ... ... ... ... ...
6 RC3 D_0 (blue)
1991RC3.9.C...0000d
2.12 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 791.00 ... ... ... ... ... ...
7 K_s (LGA/2MASS isophotal)
2003AJ....125..525J
37.6 (a) arcsec ... ... 1.000 (b/a) ... ... ... -63.0
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 75.20 ... 1.00 0.00 0.00 0 117
[J2000]
8 K_s (LGA/2MASS "total")
2003AJ....125..525J
85.1 (a) arcsec ... ... 1.000 (b/a) ... ... ... -63.0
[J2000]
Diameter for "total" magnitude 1.38E+14 170.20 ... 1.00 0.00 0.00 0 117
[J2000]
9 r (SDSS Isophotal)
2007SDSS6.C...0000:
48.15 (a) arcsec 22.59 arcsec ... ... ... ... 112.9
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 96.29 ... 0.47 0.53 0.64 62 113
[J2000]
10 r (SDSS Petrosian)
2007SDSS6.C...0000:
14.18 (a) arcsec ... ... ... 0.658 ... ... ... ... 4.77E+14 28.36 1.32 ... ... ... ... ...
11 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
11.7498 (a) arcsec ... ... 0.567 (b/a) 0.045 ... ... 114.1
[J2000]
... 4.77E+14 23.50 0.09 0.57 0.43 0.51 55 114
[J2000]
12 r (SDSS Exponential)
2007SDSS6.C...0000:
13.9337 (a) arcsec ... ... 0.300 (b/a) 0.099 ... ... 116.3
[J2000]
... 4.77E+14 27.87 0.20 0.30 0.70 0.83 73 116
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 07524                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 16.00      arcmin                   2a = 960.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b = 13.00      arcmin              2b = 780.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.81
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.19
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.21
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 36 deg
Position Angle [Equinox]      : ...                                 ...
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          : 122324.         +334900.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-27-053 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 2.00 arcmin 2a = 120.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.00 arcmin 2b = 60.00 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 : 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 : 122324 +3347 (B1950) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +06-27-053 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 12.00 arcmin 2a = 720.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 11.00 arcmin 2b = 660.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.92 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.08 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.09 Uncertainty : ... ... Cos-1(b/a) : ... 24 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Very 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 : 122324 +3347 (B1950) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 07524 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 2.12 2a = 791.00 arcsec Uncertainty : 0.01 18.40 arcsec Minor Axis (2b) : ... 2b = 658.11 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] : 147 deg [J2000] 147 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 : 122549.9 +333246. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 07524 Frequency Targeted : RC3 A_e (Johnson B) Major Axis (2a) : log(2a) + 1 = 1.76 2a = 345.30 arcsec Uncertainty : 0.02 16.30 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 : 122549.9 +333246. (J2000) Qualifiers : From new, raw data NED Comment : From magnitude-aperture curves.
No. 6 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 07524 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 2.12 2a = 791.00 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 : 122549.9 +333246. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 7 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 4395 Frequency Targeted : K_s (LGA/2MASS isophotal) Major Axis (2a) : a = 37.6 arcsec 2a = 75.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 75.20 arcsec Uncertainty : ... ... Axis Ratio : b/a = 1.000 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] : -63.0 deg [J2000] 117 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 : 186.453842 33.546749 (J2000) Qualifiers : From new, raw data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 2003AJ....125..525J Published Object Name : NGC 4395 Frequency Targeted : K_s (LGA/2MASS "total") Major Axis (2a) : a = 85.1 arcsec 2a = 170.20 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 170.20 arcsec Uncertainty : ... ... Axis Ratio : b/a = 1.000 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] : -63.0 deg [J2000] 117 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 : 186.453842 33.546749 (J2000) Qualifiers : From new, raw data NED Comment :
No. 9 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J122548.86+333248.7 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 48.15 arcsec 2a = 96.29 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 22.59 arcsec 2b = 45.18 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.47 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.53 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.64 Uncertainty : ... ... Cos-1(b/a) : ... 62 deg Position Angle [Equinox] : 112.9 deg [J2000] 113 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 : 186.4536099253 33.5468708037 (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 : 2007SDSS6.C...0000: Published Object Name : SDSS J122548.86+333248.7 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 14.18 arcsec 2a = 28.36 arcsec Uncertainty : 0.658 arcsec 1.32 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 : 186.4536099253 33.5468708037 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 11 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J122548.86+333248.7 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 11.7498 arcsec 2a = 23.50 arcsec Uncertainty : 0.045 arcsec 0.09 arcsec Minor Axis (2b) : ... 2b = 13.32 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.567 b/a = 0.57 Uncertainty : 0.005 0.01 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] : 114.1 deg [J2000] 114 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 : 186.4536099253 33.5468708037 (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 J122548.86+333248.7 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 13.9337 arcsec 2a = 27.87 arcsec Uncertainty : 0.099 arcsec 0.20 arcsec Minor Axis (2b) : ... 2b = 8.36 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.300 b/a = 0.30 Uncertainty : 0.003 0.00 Ellipticity : ... 1 - b/a = 0.70 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.83 Uncertainty : ... ... Cos-1(b/a) : ... 73 deg Position Angle [Equinox] : 116.3 deg [J2000] 116 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 : 186.4536099253 33.5468708037 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius

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