NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2021-12-05 T15:45:42 PST
Help | Comment | NED Home

You have selected the following parameters to search on:

Velocity(km/s): Unconstrained
Include ANY Object Type:
Exclude ANY Object Type:

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 Maffei 2
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
  • 74 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    230 Reference(s)   
    23 Position data point(s)
    7 Redshift data point(s)   
    4 Diameter data point(s)   
    3 Note(s)   
    1 Association(s)   
    RC3 data    

    ESSENTIAL NOTE for Maffei 2 (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for Maffei 2 (Back to INDEX)
    Object Names Type Object Names Type
    Maffei 2G 11HUGS 052 G
    UGCA 039 G 87GB 023808.8+592320 RadioS
    WEIN 021 G 87GB[BWE91] 0238+5923 RadioS
    2MASX J02415509+5936147 IrS [WB92] 0238+5923 RadioS
    2MASXi J0241549+593614 IrS NVSS J024155+593613 RadioS
    2MASS J02415498+5936145 IrS 8C 0238+593 RadioS
    IRAS 02381+5923 IrS SHARPLESS 197 HII
    ZOAG G136.50-00.33 G TXS 0238+593 RadioS
    ZOAG G136.51-00.33 G VERA J0241+5936 RadioS
    LDCE 0264 NED002 G NVGRC J024155.0+593613 RadioS
    HDCE 0173 NED002 G 2CXO J024155.0+593615 XrayS
    PGC1 0009892 NED002 G CXO J024155.0+593615 XrayS
    [RC2] A0238+59 G CXOGSG J024154.9+593615 XrayS
    DW G136.5-00.3 G [SPB93] 035 G
    HFLLZOA C023 G PGC 010217:[WLQ2016] X0002 XrayS
    HFLLZOA G136.50-00.33 G    
    HFLLZOA J023 G    
    PGC 010217 G    

    COORDINATES for Maffei 2 (Back to INDEX)

    Position Reference:2010ApJS..189...37E

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0)  39.5348510  59.3911060 02h38m08.364s +59d23m27.98s  4.40E-01  4.40E-01    0
    Equatorial (J2000.0)  40.4792392  59.6042819 02h41m55.017s +59d36m15.41s  4.40E-01  4.40E-01    0
    Ecliptic   (B1950.0)  58.4591652  41.3490933                              4.40E-01  4.40E-01    0
    Ecliptic   (J2000.0)  59.1550584  41.3548908                              4.40E-01  4.40E-01    0
    Galactic             136.4983301  -0.3254610                              4.40E-01  4.40E-01    0
    SuperGalactic        359.5805216   0.8305271                              4.40E-01  4.40E-01    0
    
    Additional detailed measurements with references are also available by clicking below:
    23 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for Maffei 2 (Back to INDEX)

    9 Distances found in NED View 9 Individual Distance Measurement(s) for Maffei 2

    Summary Statistics computed by NED from 9 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.


    Maffei 2 Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 27.83 3.747
    Std. Dev. 0.44 0.837
    Min. 27.24 2.800
    Max. 28.74 5.600
    Median 27.71 3.490

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for Maffei 2 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyGMGroup member...1984TarOT..73....1V
    KinematicsHI line widthHI line width...1998AJ....115..584H
    Luminosity Class4.0LC II-III...1991RC3.9.C...0000d
    Galaxy MorphologySAB(rs)bc:SAB(rs)bc?...1991RC3.9.C...0000d
    Distance IndicatorTully-FisherTully-Fisher...2007ApJ...655..814F
    16 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for Maffei 2 (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.
    WARNING: This position with |Galactic latitude| < 5 deg has unreliable extinction estimates.
    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]10.5098.7926.6495.2593.64910.2788.0095.5404.1173.0621.7191.0890.7320.371
    Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
    For completeness, we include the original SFD98 values: WARNING: This position with |Galactic latitude| < 5 deg has unreliable extinction estimates.
    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]12.63110.0307.7066.2134.51011.9838.8176.3954.8493.4382.0971.3390.8530.356

    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for Maffei 2 (Back to INDEX)
    Helio. Radial Velocity     :       -17 +/-        5 km/s      
    Redshift                   : -0.000057 +/- 0.000017        1995MNRAS.277..125H
    Major Diameter (arcmin)    :  5.82
    Minor Diameter (arcmin)    :  1.57
    Magnitude and Filter       :  9.3I
    Classifications            : SAB(rs)bc:          
    
    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:
    7 Redshift data point(s)      74 photometric data point(s)      4 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for Maffei 2 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :     -17 +/-      5 km/s      1995MNRAS.277..125H
    V (Kinematic LSR)          :     -14 +/-      5 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :     136 +/-      8 km/s      1991RC3.9.C...0000d
    V (Local Group)            :     212 +/-     15 km/s      1996AJ....111..794K
    V (3K CMB)                 :    -170 +/-     12 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :     244 +/-     15 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :     227 +/-     15 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :     227 +/-     15 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    1.86 +/-   0.17 Mpc      (m-M) = 26.35 +/- 0.19 mag
    D (Local Group)            :    2.90 +/-   0.29 Mpc      (m-M) = 27.31 +/- 0.20 mag
    D (3K CMB)                 :     N/A   
    D (Virgo Infall only)      :    3.34 +/-   0.25 Mpc      (m-M) = 27.62 +/- 0.15 mag
    D (Virgo + GA only)        :    3.11 +/-   0.23 Mpc      (m-M) = 27.47 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :    3.11 +/-   0.23 Mpc      (m-M) = 27.46 +/- 0.15 mag
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :       9 pc/arcsec =  0.009 kpc/arcsec =   0.54 kpc/arcmin =   0.03 Mpc/degree
    Scale (Local Group)        :      14 pc/arcsec =  0.014 kpc/arcsec =   0.84 kpc/arcmin =   0.05 Mpc/degree
    Scale (3K CMB)             :     N/A 
    Scale (Virgo Infall only)  :      16 pc/arcsec =  0.016 kpc/arcsec =   0.97 kpc/arcmin =   0.06 Mpc/degree
    Scale (Virgo + GA only)    :      15 pc/arcsec =  0.015 kpc/arcsec =   0.91 kpc/arcmin =   0.05 Mpc/degree
    Scale(Virgo + GA + Shapley):      15 pc/arcsec =  0.015 kpc/arcsec =   0.90 kpc/arcmin =   0.05 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 = 110.703 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = -17 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift -0.000565 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Cosmology Computations unstable or undefined

    QUICK-LOOK PHOTOMETRY and LUMINOSITIES for Maffei 2 (Back to INDEX)
     N/A 

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for Maffei 2 (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]
    RC3 D_25; R_25 (blue) 60.00...... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d1.09...
    K_s (LGA/2MASS "total") 912.40419.7035 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J16.577.62
    NOTE: Physical diameters are derived using a scale of 0.0182 kpc/arcsec based on Average NED-D Metric Distance of (3.747 +/- 0.837) Mpc.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 4 Diameter data point(s) available in NED.

    EXTERNAL ARCHIVES AND SERVICES for Maffei 2 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- Maffei 2SIMBAD (CDS, Strasbourg, France)
    2MASS Extended Source Images (JHKs) -- 2MASX J02415509+5936147 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J0241549+593614 NASA/IPAC Infrared Science Archive (IRSA)
    Catalogue of Principal Galaxies -- PGC 010217 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 010217 The Lyon/Meudon Extragalactic Database (LEDA)
    NRAO/VLA Sky Survey (NVSS)
    Texas Survey of radio sources at 365MHz -- TXS 0238+593 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- Maffei 2GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- Maffei 2NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 02h41m55.0s, +59d36m15s (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





    Back to NED Home