NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-24 T20:16:30 PDT
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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 6251
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
  • 106 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    472 Reference(s)   
    26 Position data point(s)
    21 Redshift data point(s)   
    6 Diameter data point(s)   
    11 Note(s)   
    UGC data    
    RC3 data    

    ESSENTIAL NOTE for NGC 6251 (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for NGC 6251 (Back to INDEX)
    Object Names Type Object Names Type
    NGC 6251G QVW5 J163409+8227 RadioS
    UGC 10501 G QVW7 J163353+822927 RadioS
    CGCG 367-013 G 1RXS J163230.3+823214 XrayS
    CGCG 1638.0+8239 G 1WGA J1632.5+8232 XrayS
    CGCG 1638+8239 G 2XMM J163232.1+823216 XrayS
    MCG +14-08-010 G 2XMMp J163232.1+823216 XrayS
    2MASX J16323175+8232165 IrS 1AXG J163223+8232 XrayS
    2MASXi J1632317+823216 IrS 1FGL J1635.4+8228 GammaS
    2MASS J16323197+8232165 IrS [AGK92a] 1637+8238 RadioS
    LQAC 248+082 001 G [WWB2000] 01 G
    CGRaBS J1632+8232 G [LCF2001] J1632+825 RadioS
    NPM1G +82.0085 G [VCV2001] J163232.1+823217 G
    PGC 058472 G 3EG J1621+8203:[MHM2002] 01 XrayS
    SSTSL2 J163232.05+823216.4 IrS 3EG J1621+8203:[MHM2002] B01 RadioS
    UZC J163231.7+823216 G NGC 6251:[GGC2003] 1 XrayS
    UZC-BGP 79A G RX J1632.5+8232:[ZEH2003] 02 G
    BZU J1632+8232 QSO [VCV2006] J163232.1+823217 G
    [WB92] 1636+8240 RadioS[HRT2007] J163215+823220 RadioS
    NVSS J163226+823220 RadioS[GMM2009b] 73 G
    S5 1637+82 RadioS[MGL2009] 2152 QSO
    CRATES J1632+8232 NED03 RadioS[CPS2011a] J163232+823216 G
    CRATES J163231.98+823216.4 RadioSNGC 6251:[CPS2011a] 25 G
    ICRF J163231.9+823216 RadioS[LTS2012] F16354+8228 G
    IERS B1637+826 RadioS[RCR2012] 48 RadioS
    KNoWS J163235+823228 RadioS[AHG2014] B215 G
    WMAP 076 RadioS[MSU2014] J163231+823216 QSO
    WMAP J1633+8227 RadioS    
    WMAP J163317+8227 RadioS    
    WMAP J163320+8226 RadioS    
    NEWPS_5yr_5s 365 RadioS    
    NEWPS_5yr_5s_15 352 RadioS    
         

    COORDINATES for NGC 6251 (Back to INDEX)

    Position Reference:2004AJ....127.3587F

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0) 249.4873388  82.6384761 16h37m56.9613s +82d38m18.514s  9.97E-03  6.50E-04   92
    Equatorial (J2000.0) 248.1332079  82.5378886 16h32m31.9699s +82d32m16.399s  9.97E-03  6.50E-04   90
    Ecliptic   (B1950.0)  98.9680595  73.2602404                              9.97E-03  6.50E-04  121
    Ecliptic   (J2000.0)  99.6715153  73.2665600                              9.97E-03  6.50E-04  121
    Galactic             115.7637754  31.1959464                              9.97E-03  6.50E-04   31
    SuperGalactic         31.1206521  21.7208361                              9.97E-03  6.50E-04  127
    
    Additional detailed measurements with references are also available by clicking below:
    26 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for NGC 6251 (Back to INDEX)

    2 Distances found in NED View 2 Individual Distance Measurement(s) for NGC 6251

    Summary Statistics computed by NED from 2 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 6251 Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 34.96 98.200
    Std. Dev. 0.01 0.849
    Min. 34.95 97.600
    Max. 34.97 98.800
    Median 34.96 98.200

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 6251 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyPRPair member, radial velocity confirmed...2006A&A...456..467F
    Galaxy MorphologyEE...1991RC3.9.C...0000d
    Radio MorphologyIFR I...1983MNRAS.204..151L
    Activity Typeunobscured Seyfert 2unobscured Seyfert 2...2002A&A...394..435P
    Distance IndicatorTully-FisherTully-Fisher...2007A&A...465...71T
    17 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for NGC 6251 (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]0.3780.3160.2390.1890.1310.3690.2880.1990.1480.1100.0620.0390.0260.013
    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]0.4750.3770.2900.2340.1700.4500.3310.2400.1820.1290.0790.0500.0320.013


    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.300 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 6251 (Back to INDEX)
    Helio. Radial Velocity     :      7408 +/-       22 km/s      
    Redshift                   :  0.024710 +/- 0.000073        2003AJ....126.2268W
    Major Diameter (arcmin)    :   1.8
    Minor Diameter (arcmin)    :   1.5
    Magnitude and Filter       : 8.0 R
    Classifications            : E;LERG         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:
    21 Redshift data point(s)      106 photometric data point(s)      6 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for NGC 6251 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :    7408 +/-     22 km/s      2003AJ....126.2268W
    V (Kinematic LSR)          :    7420 +/-     22 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :    7587 +/-     23 km/s      1991RC3.9.C...0000d
    V (Local Group)            :    7645 +/-     26 km/s      1996AJ....111..794K
    V (3K CMB)                 :    7371 +/-     22 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :    7726 +/-     27 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :    7625 +/-     28 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :    7635 +/-     28 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :   103.9 +/-    7.3 Mpc      (m-M) = 35.08 +/- 0.15 mag
    D (Local Group)            :   104.7 +/-    7.3 Mpc      (m-M) = 35.10 +/- 0.15 mag
    D (3K CMB)                 :   101.0 +/-    7.1 Mpc      (m-M) = 35.02 +/- 0.15 mag
    D (Virgo Infall only)      :   105.8 +/-    7.4 Mpc      (m-M) = 35.12 +/- 0.15 mag
    D (Virgo + GA only)        :   104.5 +/-    7.3 Mpc      (m-M) = 35.09 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :   104.6 +/-    7.3 Mpc      (m-M) = 35.10 +/- 0.15 mag
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :     504 pc/arcsec =  0.504 kpc/arcsec =  30.23 kpc/arcmin =   1.81 Mpc/degree
    Scale (Local Group)        :     508 pc/arcsec =  0.508 kpc/arcsec =  30.46 kpc/arcmin =   1.83 Mpc/degree
    Scale (3K CMB)             :     490 pc/arcsec =  0.490 kpc/arcsec =  29.37 kpc/arcmin =   1.76 Mpc/degree
    Scale (Virgo Infall only)  :     513 pc/arcsec =  0.513 kpc/arcsec =  30.79 kpc/arcmin =   1.85 Mpc/degree
    Scale (Virgo + GA only)    :     506 pc/arcsec =  0.506 kpc/arcsec =  30.38 kpc/arcmin =   1.82 Mpc/degree
    Scale(Virgo + GA + Shapley):     507 pc/arcsec =  0.507 kpc/arcsec =  30.42 kpc/arcmin =   1.83 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 = 3.287 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 7408 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.024588 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 103 Mpc (m-M) = 35.06 mag Angular-Size Distance : 98.1 Mpc (m-M) = 34.96 mag Co-Moving Radial Distance : 100 Mpc (m-M) = 35.01 mag Co-Moving Tangential Dist. : 100 Mpc (m-M) = 35.01 mag Co-Moving Volume : 0.00425 Gpc^3 Light Travel-Time : 0.324 Gyr Age at Redshift 0.024588 : 12.975 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 475 pc/arcsec = 0.475 kpc/arcsec = 28.52 kpc/arcmin = 1.71 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.90741; Magnitude per Unit Area = 0.1055 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 6251 (Back to INDEX)
     N/A 

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 6251 (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_0 (blue) 117.00...... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d55.70...
    K_s (2MASS "total") 109.10104.74160 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:51.9449.86
    NOTE: Physical diameters are derived using a scale of 0.4761 kpc/arcsec based on Average NED-D Metric Distance of (98.200 +/- 0.849) Mpc.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 6 Diameter data point(s) available in NED.

    EXTERNAL ARCHIVES AND SERVICES for NGC 6251 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 6251SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 6251VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Uppsala General Catalog -- UGC 10501 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Original Zwicky Catalog -- CGCG 367-013 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 +14-08-010 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J16323175+8232165 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J1632317+823216 NASA/IPAC Infrared Science Archive (IRSA)
    Catalogue of Principal Galaxies -- PGC 058472 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 058472 The Lyon/Meudon Extragalactic Database (LEDA)
    NRAO/VLA Sky Survey (NVSS)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 6251GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 6251NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 16h32m32.0s, +82d32m16s (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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