NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2021-12-03 T02:35:54 PST
Help | Comment | NED Home

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 6808


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 6808                       19h43m54.0s -70d38m00s G        3438  0.011468      12.46    ...    58     4   71    9     7   17     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 6808

INDEX for NGC 6808
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
  • 71 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    58 Reference(s)   
    9 Position data point(s)
    7 Redshift data point(s)   
    17 Diameter data point(s)   
    4 Note(s)   
    ESO data    
    RC3 data    

    ESSENTIAL NOTE for NGC 6808 (Back to INDEX)
    Marginal HIPASS detection.                                                      
    

    CROSS-IDENTIFICATIONS for NGC 6808 (Back to INDEX)
    Object Names Type Object Names Type
    NGC 6808G SGC 193828-7045.1 G
    ESO 073- G 003 G ESO-LV 0730030 G
    ESO 193828-7045.1 G 6dF J1943540-703800 G
    WISEA J194353.99-703759.8 IrS LDCE 1386 NED001 G
    2MASX J19435402-7038002 IrS PGC1 0063578 NED001 G
    2MASS J19435397-7037599 IrS HIPASS J1944-70 RadioS
    IRAS 19385-7045 IrS PGC 063578 G
    IRAS F19384-7045 IrS PMN J1943-7038 RadioS
    AKARI J1943534-703753 IrS SUMSS J194354-703758 RadioS
         

    COORDINATES for NGC 6808 (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)  294.615700  -70.752395  19h38m27.77s  -70d45m08.6s  1.25E+00  1.25E+00    0
    Equatorial (J2000.0)  295.975000  -70.633389  19h43m54.00s  -70d38m00.2s  1.25E+00  1.25E+00    0
    Ecliptic   (B1950.0)  281.917597  -48.323634                              1.25E+00  1.25E+00    0
    Ecliptic   (J2000.0)  282.618380  -48.329834                              1.25E+00  1.25E+00    0
    Galactic              324.784427  -29.811705                              1.25E+00  1.25E+00    0
    SuperGalactic         210.481987    3.242405                              1.25E+00  1.25E+00    0
    
    Additional detailed measurements with references are also available by clicking below:
    9 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for NGC 6808 (Back to INDEX)
     N/A 

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 6808 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyGMGroup member...1975SSS.....9..557d
    KinematicsHI line widthHI line width...2005MNRAS.361...34D
    Luminosity Class1.5LC I-II...1991RC3.9.C...0000d
    Galaxy MorphologySA(r)ab pec:SA(r)ab pec?...1991RC3.9.C...0000d
    15 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for NGC 6808 (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]0.3500.2920.2210.1750.1210.3420.2660.1840.1370.1020.0570.0360.0240.012
    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]0.4380.3480.2670.2150.1560.4150.3060.2220.1680.1190.0730.0460.0300.012


    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 6808 (Back to INDEX)
    Helio. Radial Velocity     :      3438 +/-       21 km/s      
    Redshift                   :  0.011468 +/- 0.000070        1992CORV..C...0000F
    Major Diameter (arcmin)    :   1.5
    Minor Diameter (arcmin)    :   0.8
    Magnitude and Filter       : 12.46
    Classifications            : SA(r)ab pec:        
    
    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)      71 photometric data point(s)      17 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for NGC 6808 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :    3438 +/-     21 km/s      1992CORV..C...0000F
    V (Kinematic LSR)          :    3434 +/-     21 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :    3325 +/-     21 km/s      1991RC3.9.C...0000d
    V (Local Group)            :    3280 +/-     23 km/s      1996AJ....111..794K
    V (3K CMB)                 :    3405 +/-     21 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :    3269 +/-     23 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :    3596 +/-     32 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :    3615 +/-     33 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    45.5 +/-    3.2 Mpc      (m-M) = 33.29 +/- 0.15 mag
    D (Local Group)            :    44.9 +/-    3.2 Mpc      (m-M) = 33.26 +/- 0.15 mag
    D (3K CMB)                 :    46.7 +/-    3.3 Mpc      (m-M) = 33.34 +/- 0.15 mag
    D (Virgo Infall only)      :    44.8 +/-    3.1 Mpc      (m-M) = 33.26 +/- 0.15 mag
    D (Virgo + GA only)        :    49.3 +/-    3.5 Mpc      (m-M) = 33.46 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :    49.5 +/-    3.5 Mpc      (m-M) = 33.47 +/- 0.15 mag
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :     221 pc/arcsec =  0.221 kpc/arcsec =  13.25 kpc/arcmin =   0.79 Mpc/degree
    Scale (Local Group)        :     218 pc/arcsec =  0.218 kpc/arcsec =  13.07 kpc/arcmin =   0.78 Mpc/degree
    Scale (3K CMB)             :     226 pc/arcsec =  0.226 kpc/arcsec =  13.57 kpc/arcmin =   0.81 Mpc/degree
    Scale (Virgo Infall only)  :     217 pc/arcsec =  0.217 kpc/arcsec =  13.03 kpc/arcmin =   0.78 Mpc/degree
    Scale (Virgo + GA only)    :     239 pc/arcsec =  0.239 kpc/arcsec =  14.33 kpc/arcmin =   0.86 Mpc/degree
    Scale(Virgo + GA + Shapley):     240 pc/arcsec =  0.240 kpc/arcsec =  14.40 kpc/arcmin =   0.86 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 = 6.942 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 3438 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.011359 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 47.1 Mpc (m-M) = 33.36 mag Angular-Size Distance : 46 Mpc (m-M) = 33.31 mag Co-Moving Radial Distance : 46.5 Mpc (m-M) = 33.34 mag Co-Moving Tangential Dist. : 46.5 Mpc (m-M) = 33.34 mag Co-Moving Volume : 0.000422 Gpc^3 Light Travel-Time : 0.151 Gyr Age at Redshift 0.011359 : 13.148 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 223 pc/arcsec = 0.223 kpc/arcsec = 13.39 kpc/arcmin = 0.80 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.95582; Magnitude per Unit Area = 0.04906 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 6808 (Back to INDEX)
     N/A 

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 6808 (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 181.9785.5339 27.0 B-mag arcsec^-2^ 1989ESOLV.C...0000L43.6920.53
    K_s (2MASS "total") 128.6059.1640 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:30.8714.20
    NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.240 kpc/arcsec.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 17 Diameter data point(s) available in NED.

    EXTERNAL ARCHIVES AND SERVICES for NGC 6808 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 6808SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 6808VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    ESO/Uppsala Survey -- ESO 073- G 003 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J19435402-7038002 NASA/IPAC Infrared Science Archive (IRSA)
    IRAS Faint Source Catalog -- IRAS F19384-7045 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    The ESO-LV catalog-- ESO-LV 0730030 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query 6dF Galaxy Redshift Survey -- 6dF J1943540-703800 6dF Galaxy Redshift Survey
    Catalogue of Principal Galaxies -- PGC 063578 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 063578 The Lyon/Meudon Extragalactic Database (LEDA)
    Parkes-MIT-NRAO 4.85GHz Surveys -- PMN J1943-7038 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 6808GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 6808NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 19h43m54.0s, -70d38m00s (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

    Back to the list




    Back to NED Home