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Date and Time of the Query: 2019-06-26 T23:56:13 PDT
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Diameter data point(s) for object NGC 3455

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
2.80 arcmin 1.80 arcmin ... ... ... ... 80
[B1950]
About 25.0 B-mag arcsec^-2^ 7.40E+14 168.00 ... 0.64 0.36 0.41 50 80
[J2000]
2 K_s (2MASS isophotal)
20032MASX.C.......:
31.3 (a) arcsec ... ... 0.580 (b/a) ... ... ... 70
[J2000]
20.0 K-mag arcsec^-2^ 1.38E+14 62.60 ... 0.58 0.42 0.50 55 70
[J2000]
3 K_s (2MASS "total")
20032MASX.C.......:
56.2 (a) arcsec ... ... 0.580 (b/a) ... ... ... 70
[J2000]
Diameter for "total" magnitude 1.38E+14 112.50 ... 0.58 0.42 0.50 55 70
[J2000]
4 POSS1 103a-O
1964MCG2..C...0000V
0.80 arcmin 0.50 arcmin ... ... ... ... ... Very high surface brightness 7.40E+14 48.00 ... 0.62 0.38 0.44 51 ...
5 POSS1 103a-O
1964MCG2..C...0000V
2.70 arcmin 1.60 arcmin ... ... ... ... ... Intermed. surface brightness 7.40E+14 162.00 ... 0.59 0.41 0.48 54 ...
6 B (Johnson)
1994A&AS..106..451D
71.5 (a) arcsec ... ... ... 2.6 ... ... ... 25 B-mag arcsec^-2^ 6.81E+14 143.00 5.20 ... ... ... ... ...
7 R (Kron-Cousins)
1994A&AS..106..451D
49.0 (a) arcsec ... ... 0.58 (b/a) 0.9 ... ... 73.1
[J2000]
23.5 R-mag arcsec^-2^ 4.68E+14 98.00 1.80 0.58 0.42 0.50 55 73
[J2000]
8 RC3 D_25, R_25 (blue)
1991RC3.9.C...0000d
1.39 log(2a) + 1 ... ... 0.21
log(a/b)
0.03 ... ... 80
[J2000]
25.0 B-mag arcsec^-2^ 6.81E+14 147.30 10.50 0.62 0.38 0.45 52 80
[J2000]
9 RC3 D_0 (blue)
1991RC3.9.C...0000d
1.40 log(2a) + 1 ... ... ... ... ... ... ... 25.0 B-mag arcsec^-2^ 6.81E+14 150.70 ... ... ... ... ... ...
10 r (SDSS Isophotal)
2007SDSS6.C...0000:
54.22 (a) arcsec 30.80 arcsec ... ... ... ... 66.7
[J2000]
25.0 mag arcsec^-2^ 4.77E+14 108.43 ... 0.57 0.43 0.51 55 67
[J2000]
11 r (SDSS Petrosian)
2007SDSS6.C...0000:
11.78 (a) arcsec ... ... ... 0.386 ... ... ... ... 4.77E+14 23.57 0.77 ... ... ... ... ...
12 r (SDSS deVaucouleurs)
2007SDSS6.C...0000:
11.7486 (a) arcsec ... ... 0.953 (b/a) 0.112 ... ... 67.2
[J2000]
... 4.77E+14 23.50 0.22 0.95 0.05 0.05 18 67
[J2000]
13 r (SDSS Exponential)
2007SDSS6.C...0000:
7.1723 (a) arcsec ... ... 0.614 (b/a) 0.027 ... ... 68.4
[J2000]
... 4.77E+14 14.35 0.06 0.61 0.39 0.45 52 68
[J2000]


Detailed Information for Each Entry

 No. 1
                                Published Units:                    Homogenized Units:

Reference Code                : 1973UGC...C...0000N
Published Object Name         : UGC 06028                     
Frequency Targeted            : POSS1 103a-O                  
Major Axis (2a)               : 2.80       arcmin                   2a = 168.00 arcsec
Uncertainty                   : ...                                 ... 
Minor Axis (2b)               : 2b =  1.80      arcmin              2b = 108.00 arcsec 
Uncertainty                   : ...                                 ...
Axis Ratio                    : ...                                 b/a = 0.64
Uncertainty                   : ...                                 ...
Ellipticity                   : ...                                 1 - b/a = 0.36
Uncertainty                   : ...                                 ...
Eccentricity                  : ...                                 [(a/b)2-1]/[(a/b)2+1] = 0.41
Uncertainty                   : ...                                 ...
Cos-1(b/a)                    : ...                                 50 deg
Position Angle [Equinox]      :  80    deg [B1950]                  80 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          : 105154.         +173300.    (B1950)
Qualifiers                    : From new, raw data
NED Comment                   :                                         

No. 2 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J10543106+1717045 Frequency Targeted : K_s (2MASS isophotal) Major Axis (2a) : a = 31.3 arcsec 2a = 62.60 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 36.31 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.580 b/a = 0.58 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.50 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 70 deg [J2000] 70 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 : 163.629471 17.284630 (J2000) Qualifiers : From new, raw data NED Comment :
No. 3 Published Units: Homogenized Units: Reference Code : 20032MASX.C.......: Published Object Name : 2MASX J10543106+1717045 Frequency Targeted : K_s (2MASS "total") Major Axis (2a) : a = 56.2 arcsec 2a = 112.50 arcsec Uncertainty : ... ... Minor Axis (2b) : ... 2b = 65.25 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.580 b/a = 0.58 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.50 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 70 deg [J2000] 70 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 : 163.629471 17.284630 (J2000) Qualifiers : From new, raw data NED Comment :
No. 4 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +03-28-031 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 0.80 arcmin 2a = 48.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 0.50 arcmin 2b = 30.00 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] = 0.44 Uncertainty : ... ... Cos-1(b/a) : ... 51 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 : 105154 +1734 (B1950) Qualifiers : From new, raw data NED Comment :
No. 5 Published Units: Homogenized Units: Reference Code : 1964MCG2..C...0000V Published Object Name : MCG +03-28-031 Frequency Targeted : POSS1 103a-O Major Axis (2a) : 2.70 arcmin 2a = 162.00 arcsec Uncertainty : ... ... Minor Axis (2b) : 2b = 1.60 arcmin 2b = 96.00 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.59 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.41 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.48 Uncertainty : ... ... Cos-1(b/a) : ... 54 deg Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : No uncertainty reported Diameter Reference Level : Intermed. 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 : 105154 +1734 (B1950) Qualifiers : From new, raw data NED Comment :
No. 6 Published Units: Homogenized Units: Reference Code : 1994A&AS..106..451D Published Object Name : UGC 06028 Frequency Targeted : B (Johnson) Major Axis (2a) : a = 71.5 arcsec 2a = 143.00 arcsec Uncertainty : 2.6 arcsec 5.20 arcsec Minor Axis (2b) : ... 2b = -142857.00 arcsec Uncertainty : ... ... Axis Ratio : b/a = b/a = -999.00 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 1000.00 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 1.00 Uncertainty : ... ... Cos-1(b/a) : ... ... Position Angle [Equinox] : ... ... Uncertainty : ... ... Significance : rms noise Diameter Reference Level : 25 B-mag arcsec^-2^ Frequency : 4400 A 6.81E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Calibrated CCD image Fitting Technique : Profile fitting to image Measured Quantity : Isophotal diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : Qualifiers : From new, raw data NED Comment :
No. 7 Published Units: Homogenized Units: Reference Code : 1994A&AS..106..451D Published Object Name : UGC 06028 Frequency Targeted : R (Kron-Cousins) Major Axis (2a) : a = 49.0 arcsec 2a = 98.00 arcsec Uncertainty : 0.9 arcsec 1.80 arcsec Minor Axis (2b) : ... 2b = 56.84 arcsec Uncertainty : ... ... Axis Ratio : b/a = 0.58 b/a = 0.58 Uncertainty : ... ... Ellipticity : ... 1 - b/a = 0.42 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.50 Uncertainty : ... ... Cos-1(b/a) : ... 55 deg Position Angle [Equinox] : 73.1 deg [J2000] 73 deg [J2000] Uncertainty : 10 10 Significance : rms noise Diameter Reference Level : 23.5 R-mag arcsec^-2^ Frequency : 6400 A 4.68E+14 Hz Frequency Mode : Broad-band detector (e.g. photographic plate) Measurement Mode Detector Type : Calibrated CCD image Fitting Technique : Profile fitting to image Measured Quantity : Isophotal diameter Qualifiers : A radius is given in DIA_MAJ, not a diameter Coordinates Targeted : Qualifiers : From new, raw data NED Comment :
No. 8 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06028 Frequency Targeted : RC3 D_25, R_25 (blue) Major Axis (2a) : log(2a) + 1 = 1.39 2a = 147.30 arcsec Uncertainty : 0.03 10.50 arcsec Minor Axis (2b) : ... 2b = 90.88 arcsec Uncertainty : ... ... Axis Ratio : log(a/b) = 0.21 b/a = 0.62 Uncertainty : 0.03 0.04 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] : 80 deg [J2000] 80 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 : 105431.4 +171708. (J2000) Qualifiers : Homogenized from previously published data NED Comment :
No. 9 Published Units: Homogenized Units: Reference Code : 1991RC3.9.C...0000d Published Object Name : UGC 06028 Frequency Targeted : RC3 D_0 (blue) Major Axis (2a) : log(2a) + 1 = 1.40 2a = 150.70 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 : 105431.4 +171708. (J2000) Qualifiers : Homogenized from previously published data NED Comment : Extinction and inclination corrected.
No. 10 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J105431.09+171705.0 Frequency Targeted : r (SDSS Isophotal) Major Axis (2a) : a = 54.22 arcsec 2a = 108.43 arcsec Uncertainty : ... ... Minor Axis (2b) : b = 30.80 arcsec 2b = 61.59 arcsec Uncertainty : ... ... Axis Ratio : ... b/a = 0.57 Uncertainty : ... ... 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] : 66.7 deg [J2000] 67 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 : 163.6295579759 17.2847459937 (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 J105431.09+171705.0 Frequency Targeted : r (SDSS Petrosian) Major Axis (2a) : a = 11.78 arcsec 2a = 23.57 arcsec Uncertainty : 0.386 arcsec 0.77 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 : 163.6295579759 17.2847459937 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment :
No. 12 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J105431.09+171705.0 Frequency Targeted : r (SDSS deVaucouleurs) Major Axis (2a) : a = 11.7486 arcsec 2a = 23.50 arcsec Uncertainty : 0.112 arcsec 0.22 arcsec Minor Axis (2b) : ... 2b = 22.39 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.953 b/a = 0.95 Uncertainty : 0.007 0.01 Ellipticity : ... 1 - b/a = 0.05 Uncertainty : ... ... Eccentricity : ... [(a/b)2-1]/[(a/b)2+1] = 0.05 Uncertainty : ... ... Cos-1(b/a) : ... 18 deg Position Angle [Equinox] : 67.2 deg [J2000] 67 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 : 163.6295579759 17.2847459937 (J2000) Qualifiers : From new, raw data; DIA_MAJ or DIA_MIN modified from published data NED Comment : Effective (half-light) radius
No. 13 Published Units: Homogenized Units: Reference Code : 2007SDSS6.C...0000: Published Object Name : SDSS J105431.09+171705.0 Frequency Targeted : r (SDSS Exponential) Major Axis (2a) : a = 7.1723 arcsec 2a = 14.35 arcsec Uncertainty : 0.027 arcsec 0.06 arcsec Minor Axis (2b) : ... 2b = 8.81 arcsec Uncertainty : ... 0.00 Axis Ratio : b/a = 0.614 b/a = 0.61 Uncertainty : 0.003 0.00 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] : 68.4 deg [J2000] 68 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 : 163.6295579759 17.2847459937 (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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