NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-21 T07:24:16 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. 1

INDEX for NGC 4631
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):
  • Images
  • 266 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    838 Reference(s)   
    68 Position data point(s)
    34 Redshift data point(s)   
    7 Diameter data point(s)   
    25 Note(s)   
    UGC data    
    RC3 data    

    ESSENTIAL NOTE for NGC 4631 (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for NGC 4631 (Back to INDEX)
    Object Names Type Object Names Type
    NGC 4631G UZC J124208.0+323226 G
    Whale Galaxy G 11HUGS 303 G
    UGC 07865 G MG2 J124203+3232 RadioS
    ARP 281 NED02 G 87GB 123941.4+324853 RadioS
    KUG 1239+328B G 87GB[BWE91] 1239+3248 RadioS
    CGCG 188-016 G [WB92] 1239+3248 RadioS
    CGCG 1239.7+3249 G NVSS J124208+323231 RadioS
    MCG +06-28-020 G VLSS J1242.1+3232 RadioS
    B2 1239+32 RadioS6C B123939.0+324855 RadioS
    2MASX J12420800+3232294 IrS 7C 1239+3248 RadioS
    IRAS 12396+3249 IrS Cul 1239+328 RadioS
    IRAS F12396+3249 IrS GB2 1239+328 RadioS
    AKARI J1242080+323231 IrS HIJASS J1242+32 G
    ISOSS J12421+3232 IrS EXSS 1239.6+3248 XrayS
    KPG 350A G LGG 291:[G93] 005 G
    LDCE 0867 NED124 G [DFO95] 035 G
    HDCE 0706 NED078 G [M98j] 177 NED04 G
    USGC U500 NED03 G [KVB99] 31 G
    PGC1 0042637 NED001 G [CRJ2004] J1242.1+3232 RadioS
    EON J190.533+32.541 G [SLK2004] 0730 IrS
    HOLM 442A G WSRT-CVn [KOV2009] 64 RadioS
    NSA 141970 G    
    PGC 042637 G    
         

    COORDINATES for NGC 4631 (Back to INDEX)

    Position Reference:20032MASX.C.......:

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0)  189.924415   32.815420  12h39m41.86s  +32d48m55.5s  1.25E+00  1.25E+00    0
    Equatorial (J2000.0)  190.533375   32.541500  12h42m08.01s  +32d32m29.4s  1.25E+00  1.25E+00    0
    Ecliptic   (B1950.0)  174.292534   33.698454                              1.25E+00  1.25E+00    0
    Ecliptic   (J2000.0)  174.995397   33.698567                              1.25E+00  1.25E+00    0
    Galactic              142.805542   84.223494                              1.25E+00  1.25E+00    0
    SuperGalactic          84.220461    5.741832                              1.25E+00  1.25E+00    0
    
    Additional detailed measurements with references are also available by clicking below:
    68 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for NGC 4631 (Back to INDEX)

    18 Distances found in NED View 18 Individual Distance Measurement(s) for NGC 4631

    Summary Statistics computed by NED from 18 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 4631 Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 28.45 5.097
    Std. Dev. 0.62 1.537
    Min. 27.53 3.200
    Max. 29.41 7.620
    Median 28.18 4.330

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4631 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyPPPair member (points to parent)...1972AISAO...7....3K
    KinematicsHI line widthHI line width...1999A&AS..135..255K
    Luminosity Class7.0LC IV...1991RC3.9.C...0000d
    Galaxy MorphologySB(s)d edge-onSB(s)d edge-on...1991RC3.9.C...0000d
    Distance IndicatorTully-FisherTully-Fisher...2009AJ....138..323T
    58 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for NGC 4631 (Back to INDEX)
    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]0.0740.0620.0470.0370.0260.0720.0560.0390.0290.0220.0120.0080.0050.003
    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]0.0920.0730.0560.0450.0330.0880.0640.0470.0350.0250.0150.0100.0060.003


    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.030 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 4631 (Back to INDEX)
    Helio. Radial Velocity     :       610 +/-        2 km/s      
    Redshift                   :  0.002035 +/- 0.000007        2013MNRAS.428.1790W
    Major Diameter (arcmin)    :  15.5
    Minor Diameter (arcmin)    :   2.7
    Magnitude and Filter       :  9.75
    Classifications            : SB(s)d         HII  
    
    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:
    34 Redshift data point(s)      266 photometric data point(s)      7 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for NGC 4631 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :     610 +/-      2 km/s      2013MNRAS.428.1790W
    V (Kinematic LSR)          :     618 +/-      2 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :     630 +/-      2 km/s      1991RC3.9.C...0000d
    V (Local Group)            :     609 +/-      2 km/s      1996AJ....111..794K
    V (3K CMB)                 :     873 +/-     18 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :     511 +/-      7 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :     556 +/-      8 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :     558 +/-      8 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    8.63 +/-   0.61 Mpc      (m-M) = 29.68 +/- 0.15 mag
    D (Local Group)            :    8.34 +/-   0.58 Mpc      (m-M) = 29.61 +/- 0.15 mag
    D (3K CMB)                 :   11.95 +/-   0.87 Mpc      (m-M) = 30.39 +/- 0.15 mag
    D (Virgo Infall only)      :    7.00 +/-   0.50 Mpc      (m-M) = 29.23 +/- 0.15 mag
    D (Virgo + GA only)        :    7.62 +/-   0.54 Mpc      (m-M) = 29.41 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :    7.65 +/-   0.54 Mpc      (m-M) = 29.42 +/- 0.15 mag
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :      42 pc/arcsec =  0.042 kpc/arcsec =   2.51 kpc/arcmin =   0.15 Mpc/degree
    Scale (Local Group)        :      40 pc/arcsec =  0.040 kpc/arcsec =   2.43 kpc/arcmin =   0.15 Mpc/degree
    Scale (3K CMB)             :      58 pc/arcsec =  0.058 kpc/arcsec =   3.48 kpc/arcmin =   0.21 Mpc/degree
    Scale (Virgo Infall only)  :      34 pc/arcsec =  0.034 kpc/arcsec =   2.04 kpc/arcmin =   0.12 Mpc/degree
    Scale (Virgo + GA only)    :      37 pc/arcsec =  0.037 kpc/arcsec =   2.22 kpc/arcmin =   0.13 Mpc/degree
    Scale(Virgo + GA + Shapley):      37 pc/arcsec =  0.037 kpc/arcsec =   2.23 kpc/arcmin =   0.13 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 = 44.942 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 610 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.002911 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 12 Mpc (m-M) = 30.39 mag Angular-Size Distance : 11.9 Mpc (m-M) = 30.38 mag Co-Moving Radial Distance : 11.9 Mpc (m-M) = 30.39 mag Co-Moving Tangential Dist. : 11.9 Mpc (m-M) = 30.39 mag Co-Moving Volume : 7.14e-06 Gpc^3 Light Travel-Time : 0.039 Gyr Age at Redshift 0.002911 : 13.260 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 58 pc/arcsec = 0.058 kpc/arcsec = 3.46 kpc/arcmin = 0.21 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.98844; Magnitude per Unit Area = 0.01262 mag
    To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
    HoΩmatterΩvacuum     
    Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

    QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 4631 (Back to INDEX)
     N/A 

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4631 (Back to INDEX)

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

    Passband Apparent Major Axis
    (2a) [arcsec]
    Apparent Minor Axis
    (2b) [arcsec]
    PA
    [degrees]
    (J2000.0)
    Reference Level RefcodePhysical Major Axis
    (2a) [kpc]
    Physical Minor Axis
    (2b) [kpc]
    POSS1 103a-O 1020.00214.2085 About 25.0 B-mag arcsec^-2^ 1973UGC...C...0000N25.215.29
    K_s (LGA/2MASS "total") 828.80248.6483 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J20.486.14
    NOTE: Physical diameters are derived using a scale of 0.0247 kpc/arcsec based on Average NED-D Metric Distance of (5.097 +/- 1.537) Mpc.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 7 Diameter data point(s) available in NED.

    EXTERNAL ARCHIVES AND SERVICES for NGC 4631 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 4631SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 4631VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Uppsala General Catalog -- UGC 07865 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Original Zwicky Catalog -- CGCG 188-016 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query UZC Spectral Archive (60 arcsec search radius)Updated Zwicky Catalog Data (Harvard/SAO)
    Morphological Catalog of Galaxies -- MCG +06-28-020 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    The Second Bologna Survey -- B2 1239+32 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J12420800+3232294 NASA/IPAC Infrared Science Archive (IRSA)
    IRAS Faint Source Catalog -- IRAS F12396+3249 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Catalogue of Principal Galaxies -- PGC 042637 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 042637 The Lyon/Meudon Extragalactic Database (LEDA)
    NRAO/VLA Sky Survey (NVSS)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4631GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4631NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 12h42m08.0s, +32d32m29s (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)
    version
    SDSS Sky Server
    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)
     Size:    Contours (PS)  JPEG  FITS File 
    NRAO/VLA Sky Survey (NVSS)
        Size:     GIF     FITS File  
    Faint Images of the Radio Sky at Twenty-Centimeters
    The NRAO Data Archive System





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