NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2021-12-03 T04:58:56 PST
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You have selected the following parameters to search on:

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

NED results for object NGC 0491


1 objects found in NED.    

SOURCE LIST

 Row          Object Name                 EquJ2000.0       Object  Velocity/Redshift    Mag./  Separ.               Number of                                 Row 
 No.     (* => Essential Note)       RA               DEC  Type     km/s       z   Qual Filter arcmin Refs Notes Phot Posn Vel/z Diam Assoc Images   Spectra  No. 
1    NGC 0491                       01h21m20.4s -34d03m48s G        3868  0.012902      13.21    ...    74     4   67   12    12   20     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 0491

INDEX for NGC 0491
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
  • 67 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    74 Reference(s)   
    12 Position data point(s)
    12 Redshift data point(s)   
    20 Diameter data point(s)   
    4 Note(s)   
    ESO data    
    RC3 data    

    ESSENTIAL NOTE for NGC 0491 (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for NGC 0491 (Back to INDEX)
    Object Names Type Object Names Type
    NGC 0491G 6dF J0121203-340348 G
    ESO 352- G 053 G 6dF J0121204-340348 G
    ESO 011902-3419.5 G LDCE 0078 NED002 G
    MCG -06-04-011 G SSRS GROUP 58 NED02 G
    WISEA J012120.45-340348.0 IrS APMBGC 352-077-039 G
    2MASX J01212042-3403477 IrS GSN 001 G
    2MASXi J0121204-340347 IrS GSC 7004 01064 G
    2MASS J01212042-3403478 IrS MRSS 352-020981 G
    GALEXASC J012120.38-340346.8 UvS PGC 004914 G
    GALEXMSC J012120.34-340347.2 UvS NVSS J012120-340350 RadioS
    IRAS 01190-3419 IrS SUMSS J012120-340344 RadioS
    IRAS F01190-3419 IrS SUMSS J012120-340345 RadioS
    AKARI J0121201-340352 IrS [PW90] G_139 G
    ISOSS J01213-3404 IrS NGC 0491:[ZM98] 0001 G
    SGC 011902-3419.5 G [SLK2004] 0186 IrS
    ESO-LV 3520530 G    

    COORDINATES for NGC 0491 (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)   19.759320  -34.324878  01h19m02.24s  -34d19m29.6s  1.25E+00  1.25E+00    0
    Equatorial (J2000.0)   20.335125  -34.063278  01h21m20.43s  -34d03m47.8s  1.25E+00  1.25E+00    0
    Ecliptic   (B1950.0)    2.341880  -38.933321                              1.25E+00  1.25E+00    0
    Ecliptic   (J2000.0)    3.045667  -38.932402                              1.25E+00  1.25E+00    0
    Galactic              261.924399  -80.545665                              1.25E+00  1.25E+00    0
    SuperGalactic         264.488401  -14.066484                              1.25E+00  1.25E+00    0
    
    Additional detailed measurements with references are also available by clicking below:
    12 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for NGC 0491 (Back to INDEX)

    10 Distances found in NED View 10 Individual Distance Measurement(s) for NGC 0491

    Summary Statistics computed by NED from 10 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 0491 Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 33.93 61.400
    Std. Dev. 0.25 6.675
    Min. 33.41 48.200
    Max. 34.23 70.200
    Median 33.93 61.250

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 0491 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    KinematicsHI line widthHI line width...1998ApJS..115...43N
    Luminosity Class3.0LC II...1991RC3.9.C...0000d
    Galaxy MorphologySB(rs)b:SB(rs)b?...1991RC3.9.C...0000d
    Distance IndicatorTully-FisherTully-Fisher...1997ApJS..109..333W
    18 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for NGC 0491 (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]0.1320.1110.0840.0660.0460.1290.1010.0700.0520.0390.0220.0140.0090.005
    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]0.1640.1310.1000.0810.0590.1560.1150.0830.0630.0450.0270.0170.0110.005

    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 0491 (Back to INDEX)
    Helio. Radial Velocity     :      3868 +/-       10 km/s      
    Redshift                   :  0.012902 +/- 0.000033        1996ApJS..107...97M
    Major Diameter (arcmin)    :  1.4 
    Minor Diameter (arcmin)    :  1.0 
    Magnitude and Filter       : 13.21
    Classifications            : SB(rs)b:            
    
    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:
    12 Redshift data point(s)      67 photometric data point(s)      20 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for NGC 0491 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :    3868 +/-     10 km/s      1996ApJS..107...97M
    V (Kinematic LSR)          :    3857 +/-     10 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :    3823 +/-     10 km/s      1991RC3.9.C...0000d
    V (Local Group)            :    3839 +/-     10 km/s      1996AJ....111..794K
    V (3K CMB)                 :    3635 +/-     19 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :    3697 +/-     14 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :    3820 +/-     17 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :    3830 +/-     17 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    52.4 +/-    3.7 Mpc      (m-M) = 33.60 +/- 0.15 mag
    D (Local Group)            :    52.6 +/-    3.7 Mpc      (m-M) = 33.60 +/- 0.15 mag
    D (3K CMB)                 :    49.8 +/-    3.5 Mpc      (m-M) = 33.49 +/- 0.15 mag
    D (Virgo Infall only)      :    50.6 +/-    3.6 Mpc      (m-M) = 33.52 +/- 0.15 mag
    D (Virgo + GA only)        :    52.3 +/-    3.7 Mpc      (m-M) = 33.59 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :    52.5 +/-    3.7 Mpc      (m-M) = 33.60 +/- 0.15 mag
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :     254 pc/arcsec =  0.254 kpc/arcsec =  15.23 kpc/arcmin =   0.91 Mpc/degree
    Scale (Local Group)        :     255 pc/arcsec =  0.255 kpc/arcsec =  15.30 kpc/arcmin =   0.92 Mpc/degree
    Scale (3K CMB)             :     241 pc/arcsec =  0.241 kpc/arcsec =  14.49 kpc/arcmin =   0.87 Mpc/degree
    Scale (Virgo Infall only)  :     246 pc/arcsec =  0.246 kpc/arcsec =  14.73 kpc/arcmin =   0.88 Mpc/degree
    Scale (Virgo + GA only)    :     254 pc/arcsec =  0.254 kpc/arcsec =  15.22 kpc/arcmin =   0.91 Mpc/degree
    Scale(Virgo + GA + Shapley):     254 pc/arcsec =  0.254 kpc/arcsec =  15.26 kpc/arcmin =   0.92 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 = 6.553 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 3868 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.012126 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 50.3 Mpc (m-M) = 33.51 mag Angular-Size Distance : 49.1 Mpc (m-M) = 33.45 mag Co-Moving Radial Distance : 49.7 Mpc (m-M) = 33.48 mag Co-Moving Tangential Dist. : 49.7 Mpc (m-M) = 33.48 mag Co-Moving Volume : 0.000514 Gpc^3 Light Travel-Time : 0.161 Gyr Age at Redshift 0.012126 : 13.138 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 238 pc/arcsec = 0.238 kpc/arcsec = 14.28 kpc/arcmin = 0.86 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.95293; Magnitude per Unit Area = 0.05235 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 0491 (Back to INDEX)
     N/A 

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 0491 (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]
    ESO-LV "Quick Blue" IIa-O 93.3368.1393 27.0 B-mag arcsec^-2^ 1989ESOLV.C...0000L27.7820.28
    K_s (2MASS "total") 91.1065.59100 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:27.1219.53
    NOTE: Physical diameters are derived using a scale of 0.2977 kpc/arcsec based on Average NED-D Metric Distance of (61.400 +/- 6.675) Mpc.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 20 Diameter data point(s) available in NED.

    EXTERNAL ARCHIVES AND SERVICES for NGC 0491 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 0491SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 0491VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    ESO/Uppsala Survey -- ESO 352- G 053 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Morphological Catalog of Galaxies -- MCG -06-04-011 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J01212042-3403477 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J0121204-340347 NASA/IPAC Infrared Science Archive (IRSA)
    IRAS Faint Source Catalog -- IRAS F01190-3419 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    The ESO-LV catalog-- ESO-LV 3520530 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query 6dF Galaxy Redshift Survey -- 6dF J0121203-340348 6dF Galaxy Redshift Survey
    Query 6dF Galaxy Redshift Survey -- 6dF J0121204-340348 6dF Galaxy Redshift Survey
    Catalogue of Principal Galaxies -- PGC 004914 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 004914 The Lyon/Meudon Extragalactic Database (LEDA)
    NRAO/VLA Sky Survey (NVSS)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 0491GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 0491NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 01h21m20.4s, -34d03m48s (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)
     Size:    Contours (PS)  JPEG  FITS File 
    NRAO/VLA Sky Survey (NVSS)
    The NRAO Data Archive System

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