Date and Time of the Query: 2021-12-06 T07:21:44 PST
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Velocity(km/s): Unconstrained
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Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

Detailed Information for Object No.

INDEX for NGC 4945
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):
  • Images
  • 241 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    830 Reference(s)   
    72 Position data point(s)
    44 Redshift data point(s)   
    19 Diameter data point(s)   
    24 Note(s)   
    ESO data    
    PKS data    
    RC3 data    

    ESSENTIAL NOTE for NGC 4945 (Back to INDEX)
    A-M +30' Dec error.                                                             

    Object Names Type Object Names Type
    NGC 4945G WMAP J130554-4930 RadioS
    ESO 219- G 024 G NEWPS_5yr_5s 293 RadioS
    ESO 130231-4912.2 G NEWPS_5yr_5s_15 284 RadioS
    AM 1302-484 G QVW7 J130519-493343 RadioS
    2MFGC 10410 G 2CXO J130527.4-492804 XrayS
    PKS 1302-49 RadioSRX J1305.4-4928 XrayS
    WISEA J130527.45-492804.9 IrS 1RXS J130528.0-492758 XrayS
    2MASX J13052727-4928044 IrS 2PBC J1305.4-4928 XrayS
    2MASXi J1305261-492815 IrS 4PBC J1305.4-4928 XrayS
    2MASS J13052746-4928047 IrS PBC J1305.4-4928 XrayS
    IRAS 13025-4911 IrS XMMSL1 J130528.3-492814 XrayS
    IRAS F13025-4912 IrS 2XMM J130527.3-492804 XrayS
    CGS 442 G 2XMMp J130527.3-492804 XrayS
    SGC 130231-4912.2 G XSS J13073-4926 XrayS
    ESO-LV 2190240 G CXO J130527.49-492805.1 XrayS
    6dF J1305273-492805 RadioSSWIFT J1305.4-4928 XrayS
    LDCE 0993 NED001 G 1FGL J1305.4-4928 G
    HDCE 0790 NED001 G [dML87] 666 G
    PGC1 0046957 NED002 G [SPB93] 204 G
    LQAC 196-049 001 G LGG 344:[G93] 001 G
    HIPASS J1305-49 RadioS[MHH96] J130526-492855 XrayS
    LVHIS 43 G [VCV2001] J130527.6-492803 G
    PGC 045279 G [VCV2006] J130527.6-492803 G
    11HUGS 320 G [HRT2007] J130527-492809 RadioS
    PKS B1302-492 RadioS[KRL2007] 133 XrayS
    PKS J1305-4928 RadioS[MEM2008] 174 G
    PMN J1305-4928 RadioSNGC 4945:[KA2008] 07 XrayS
    PMNM 130231.4-491153 RadioS[WMR2009] 101 G
    MRC 1302-491 RadioS[TES2010] 044 XrayS
    SUMSS J130527-492806 RadioS[MSC2011] J130526.50-492809.3 G
    AT20G J130527-492804 RadioSNGC 4945:[L2011a] X0003 XrayS
    AT20G J130527.47-492804.8 RadioS[BTM2013] 0655 XrayS
    CRATES J1305-4928 RadioS[AHG2014] B194 G
    CRATES J130527.47-492805.0 RadioS    
    GLXY G305.2+13.3+455 RadioS    
    OCARS 1302-492 RadioS    
    PAPER J196.45-49.41 RadioS    
    WMAP J1305-4928 RadioS    

    COORDINATES for NGC 4945 (Back to INDEX)

    Position Reference:1997ApJ...481L..23G

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0) 195.6345000 -49.2005278 13h02m32.280s -49d12m01.90s  5.00E-01  2.50E-01   90
    Equatorial (J2000.0) 196.3644897 -49.4682129 13h05m27.477s -49d28m05.57s  5.00E-01  2.50E-01   90
    Ecliptic   (B1950.0) 216.3314145 -38.6407992                              5.00E-01  2.50E-01   61
    Ecliptic   (J2000.0) 217.0260945 -38.6451785                              5.00E-01  2.50E-01   61
    Galactic             305.2720760  13.3398849                              5.00E-01  2.50E-01   93
    SuperGalactic        165.1774512 -10.2119599                              5.00E-01  2.50E-01   12
    Additional detailed measurements with references are also available by clicking below:
    72 Position data point(s)


    16 Distances found in NED View 16 Individual Distance Measurement(s) for NGC 4945

    Summary Statistics computed by NED from 16 Distance(s) in the literature:
    NOTE: These summary statistics are provided for "quick-look" reference only;
    they are based exclusively on original values, as published.
    No homogenization or corrections have been applied.

    NGC 4945 Distance Modulus
    Metric Distance
    Mean 28.06 4.161
    Std. Dev. 0.39 0.891
    Min. 27.63 3.360
    Max. 29.24 7.040
    Median 27.95 3.880

    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyGRGroup member, radial-velocity confirmed...1993A&AS..100...47G
    KinematicsHI line widthHI line width...1999ApJ...524..612B
    Luminosity Class6.0LC III-IV...1991RC3.9.C...0000d
    Galaxy MorphologySB(s)cd: edge-onSB(s)cd? edge-on...1991RC3.9.C...0000d
    Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
    Distance IndicatorTully-FisherTully-Fisher...2011A&A...532A.104N
    33 Detailed Classification(s)

    Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
    of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
    The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
    the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

    L a n d o l tS D S SU K I R T
    Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
    Aλ [mag]0.7650.6400.4840.3830.2660.7480.5830.4030.3000.2230.1250.0790.0530.027
    Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
    For completeness, we include the original SFD98 values:
    L a n d o l tS D S SU K I R T
    Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
    Aλ [mag]0.9590.7620.5850.4720.3430.9100.6700.4860.3680.2610.1590.1020.0650.027

    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.790 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 4945 (Back to INDEX)
    Helio. Radial Velocity     :       563 +/-        3 km/s      
    Redshift                   :  0.001878 +/- 0.000010        2014MNRAS.440..696A
    Major Diameter (arcmin)    :  20.0
    Minor Diameter (arcmin)    :   3.8
    Magnitude and Filter       :  9.3 
    Classifications            : SB(s)cd: sp    Sy2  
    NOTE: This information is indicative only. With the exception of the
          redshift they are unreferenced and highly inhomogeneous as to
          their origin. The Radial Velocity (when available) is computed
          from the listed redshift. The remaining values are designed to
          orient the user with a quick-look, overall assessment of the
          general properties of the object in question. They are not
          averages nor are they standardized in any way.
    Additional detailed measurements with references are also available by clicking below:
    44 Redshift data point(s)      241 photometric data point(s)      19 Diameter data point(s)      

    Calculated and Corrected Velocities
    V (Heliocentric)           :     563 +/-      3 km/s      2014MNRAS.440..696A
    V (Kinematic LSR)          :     558 +/-      3 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :     385 +/-      8 km/s      1991RC3.9.C...0000d
    V (Local Group)            :     299 +/-     16 km/s      1996AJ....111..794K
    V (3K CMB)                 :     808 +/-     17 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :     354 +/-     17 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :     319 +/-     17 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :     318 +/-     17 km/s      2000ApJ...529..786M
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    5.28 +/-   0.38 Mpc      (m-M) = 28.61 +/- 0.15 mag
    D (Local Group)            :    4.09 +/-   0.36 Mpc      (m-M) = 28.06 +/- 0.18 mag
    D (3K CMB)                 :   11.07 +/-   0.81 Mpc      (m-M) = 30.22 +/- 0.15 mag
    D (Virgo Infall only)      :    4.85 +/-   0.35 Mpc      (m-M) = 28.43 +/- 0.15 mag
    D (Virgo + GA only)        :    4.38 +/-   0.31 Mpc      (m-M) = 28.21 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :    4.35 +/-   0.31 Mpc      (m-M) = 28.19 +/- 0.15 mag
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :      26 pc/arcsec =  0.026 kpc/arcsec =   1.54 kpc/arcmin =   0.09 Mpc/degree
    Scale (Local Group)        :      20 pc/arcsec =  0.020 kpc/arcsec =   1.19 kpc/arcmin =   0.07 Mpc/degree
    Scale (3K CMB)             :      54 pc/arcsec =  0.054 kpc/arcsec =   3.22 kpc/arcmin =   0.19 Mpc/degree
    Scale (Virgo Infall only)  :      23 pc/arcsec =  0.023 kpc/arcsec =   1.41 kpc/arcmin =   0.08 Mpc/degree
    Scale (Virgo + GA only)    :      21 pc/arcsec =  0.021 kpc/arcsec =   1.27 kpc/arcmin =   0.08 Mpc/degree
    Scale(Virgo + GA + Shapley):      21 pc/arcsec =  0.021 kpc/arcsec =   1.27 kpc/arcmin =   0.08 Mpc/degree
    To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
    Search for Objects within +/-arcmin where 100 kpc = 78.960 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 563 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.002695 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 11.1 Mpc (m-M) = 30.22 mag Angular-Size Distance : 11 Mpc (m-M) = 30.21 mag Co-Moving Radial Distance : 11.1 Mpc (m-M) = 30.22 mag Co-Moving Tangential Dist. : 11.1 Mpc (m-M) = 30.22 mag Co-Moving Volume : 5.67e-06 Gpc^3 Light Travel-Time : 0.036 Gyr Age at Redshift 0.002695 : 13.263 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 53 pc/arcsec = 0.053 kpc/arcsec = 3.21 kpc/arcmin = 0.19 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.98929; Magnitude per Unit Area = 0.01169 mag
    To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
    Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities


    The brightest flux in each of the following spectral regions, when available:
    Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
    Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
    Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

    Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
    Gamma-Ray14-195 keV (Swift) 1680.3E-12 erg/cm^2^/s 2017ApJS..233...17R 3.48E+35 [W] 9.05E+08
    X-Ray14-150 keV (Swift) 1470.5E-12 erg/cm^2^/s 2017ApJS..233...17R 3.05E+35 [W] 7.93E+08
    VisualB (B_T^0) 7.43 mag 1991RC3.9.C...0000d-20.63 [mag] 1.67E+10
    Near-InfraredH_tot (2MASS LGA) 4.839 +/- 0.017 mag 2003AJ....125..525J-23.22 +/- 0.27 [mag] 1.17E+10 +/- 1.26E+09
    Mid-Infrared30 microns (IRS) 49.56 Jy 2006ApJ...653.1129B 1.03E+36 [W] 2.67E+09
    Far-InfraredFIR (IRAS) 3.70E-11 W m^-2^ 1988ApJS...68...91R 7.67E+36 [W] 1.99E+10
    Sub-Millimeter870 microns (LABOCA) 15.8 +/- 1.6 Jy 2008A&A...490...77W 1.13E+34 +/- 1.66E+33 [W] 2.94E+07 +/- 4.33E+06
    Millimeter1.3 mm (SEST) 2.8 +/- 0.3 Jy 2004A&A...422..883W 1.34E+33 +/- 2.03E+32 [W] 3.48E+06 +/- 5.28E+05
    Radio145 MHz (PAPER) 20.6 Jy 2011ApJ...734L..34J 6.19E+30 [W] 1.61E+04
    NOTE: The above quantities are derived using an estimated Distance Modulus of (28.06 +/- 0.39) mag corresponding to
    a Metric Distance of (4.161 +/- 0.891) Mpc using the Average NED-D value.
    The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

    View details and SED for 241 Photometric data point(s) available in NED.


    The largest diameters in the Visual and Near-Infrared spectral regions, when available:

    Passband Apparent Major Axis
    (2a) [arcsec]
    Apparent Minor Axis
    (2b) [arcsec]
    Reference Level RefcodePhysical Major Axis
    (2a) [kpc]
    Physical Minor Axis
    (2b) [kpc]
    ESO-LV "Quick Blue" IIa-O 2511.89577.7342 27.0 B-mag arcsec^-2^ 1989ESOLV.C...0000L50.6711.65
    K_s (LGA/2MASS "total") 1182.40283.7843 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J23.855.72
    NOTE: Physical diameters are derived using a scale of 0.0202 kpc/arcsec based on Average NED-D Metric Distance of (4.161 +/- 0.891) Mpc.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 19 Diameter data point(s) available in NED.

    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 4945SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 4945VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    ESO/Uppsala Survey -- ESO 219- G 024 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J13052727-4928044 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J1305261-492815 NASA/IPAC Infrared Science Archive (IRSA)
    IRAS Faint Source Catalog -- IRAS F13025-4912 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    The ESO-LV catalog-- ESO-LV 2190240 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query 6dF Galaxy Redshift Survey -- 6dF J1305273-492805 6dF Galaxy Redshift Survey
    Catalogue of Principal Galaxies -- PGC 045279 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 045279 The Lyon/Meudon Extragalactic Database (LEDA)
    Parkes Radio Sources Catalogue -- PKS B1302-492 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Parkes-MIT-NRAO 4.85GHz Surveys -- PMN J1305-4928 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4945GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4945NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 13h05m27.5s, -49d28m06s (J2000)Site/Service
    Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
    Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
    Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
    Band(s): Size:
    NASA/IPAC Infrared Science Archive (IRSA)
    Band(s): Size:
    NASA/IPAC Infrared Science Archive (IRSA)
    NASA/IPAC Infrared Science Archive (IRSA)
    The NRAO Data Archive System

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