Date and Time of the Query: 2022-01-21 T00:04:45 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 3681

1 objects found in NED.    


 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 3681                       11h26m29.8s +16d51m47s G        1232  0.004109 SPEC 11.9     ...   176     8   81   44    22   11     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - NGC 3681

INDEX for NGC 3681
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):
  • Images
  • 81 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    176 Reference(s)   
    44 Position data point(s)
    22 Redshift data point(s)   
    11 Diameter data point(s)   
    8 Note(s)   
    UGC data    
    RC3 data    

    ESSENTIAL NOTE for NGC 3681 (Back to INDEX)

    Object Names Type Object Names Type
    NGC 3681G ASK 625750.0 G
    UGC 06445 G [BEC2010] HRS 054 G
    CGCG 096-045 G MAPS-NGP O_433_0947121 G
    CGCG 1123.8+1708 G NSA 159834 G
    MCG +03-29-048 G PGC 035193 G
    WISEA J112629.79+165148.3 IrS SSTSL2 J112629.72+165148.7 IrS
    2MASX J11262980+1651475 IrS UZC J112629.8+165148 G
    2MASX J11263106+1652010 IrS NVSS J112628+165126 RadioS
    2MASXi J1126297+165148 IrS SDSS-g-bar-0553 G
    2MASXi J1126298+165148 IrS SDSS-g-fon-1539 G
    2MASS J11262976+1651482 IrS SDSS-i-bar-0494 G
    2MASS J11262991+1651455 IrS SDSS-i-fon-1438 G
    SDSS J112629.79+165148.3 G SDSS-r-bar-0497 G
    IRAS 11238+1708 IrS SDSS-r-fon-1522 G
    IRAS F11238+1708 IrS LGG 237:[G93] 005 G
    LDCE 0778 NED039 G [M98j] 124 NED01 G
    HDCE 0632 NED017 G [RGD2004] J112631.00+165200.0 G
    USGC U376 NED04 G RSCG 41:[WBJ2013] C G
    PGC1 0035268 NED002 G    

    COORDINATES for NGC 3681 (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)  170.970657   17.138356  11h23m52.96s  +17d08m18.1s  1.25E+00  1.25E+00    0
    Equatorial (J2000.0)  171.624167   16.863194  11h26m29.80s  +16d51m47.5s  1.25E+00  1.25E+00    0
    Ecliptic   (B1950.0)  164.889101   12.162180                              1.25E+00  1.25E+00    0
    Ecliptic   (J2000.0)  165.588980   12.163324                              1.25E+00  1.25E+00    0
    Galactic              236.133313   67.844369                              1.25E+00  1.25E+00    0
    SuperGalactic          93.419506  -15.575197                              1.25E+00  1.25E+00    0
    Additional detailed measurements with references are also available by clicking below:
    44 Position data point(s)


    5 Distances found in NED View 5 Individual Distance Measurement(s) for NGC 3681

    Summary Statistics computed by NED from 5 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 3681 Distance Modulus
    Metric Distance
    Mean 32.27 28.380
    Std. Dev. 0.21 2.725
    Min. 31.92 24.200
    Max. 32.41 30.300
    Median 32.39 30.100

    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyGSX-ray-bright group member...2006MNRAS.369..360S
    KinematicsHI line widthHI line width...1988ApJS...67....1T
    Luminosity Class4.0LC II-III...1991RC3.9.C...0000d
    Galaxy MorphologySAB(r)bcSAB(r)bc...1991RC3.9.C...0000d
    Distance IndicatorTully-FisherTully-Fisher...1988NBGC.C....0000T
    45 Detailed Classification(s)

    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]0.1140.0950.0720.0570.0390.1110.0870.0600.0440.0330.0190.0120.0080.004
    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]0.1430.1130.0870.0700.0510.1360.1000.0720.0550.0390.0240.0150.0100.004

    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.010 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 3681 (Back to INDEX)
    Helio. Radial Velocity     :      1232 +/-        2 km/s SPEC 
    Redshift                   :  0.004109 +/- 0.000006  SPEC  2016SDSSD.C...0000:
    Major Diameter (arcmin)    :   2.5
    Minor Diameter (arcmin)    :   2.0
    Magnitude and Filter       : 11.9 
    Classifications            : SAB(r)bc       LINER
    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:
    22 Redshift data point(s)      81 photometric data point(s)      11 Diameter data point(s)      

    Calculated and Corrected Velocities
    V (Heliocentric)           :    1232 +/-      2 km/s SPEC 2016SDSSD.C...0000:
    V (Kinematic LSR)          :    1232 +/-      2 km/s SPEC 1986MNRAS.221.1023K
    V (Galactocentric GSR)     :    1164 +/-      3 km/s SPEC 1991RC3.9.C...0000d
    V (Local Group)            :    1116 +/-      7 km/s SPEC 1996AJ....111..794K
    V (3K CMB)                 :    1570 +/-     24 km/s SPEC 1996ApJ...473..576F
    V (Virgo Infall only)      :    1651 +/-     38 km/s SPEC 2000ApJ...529..786M
    V (Virgo + GA only)        :    1801 +/-     40 km/s SPEC 2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :    1807 +/-     40 km/s SPEC 2000ApJ...529..786M
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    15.9 +/-    1.1 Mpc      (m-M) = 31.01 +/- 0.15 mag
    D (Local Group)            :    15.3 +/-    1.1 Mpc      (m-M) = 30.92 +/- 0.15 mag
    D (3K CMB)                 :    21.5 +/-    1.5 Mpc      (m-M) = 31.66 +/- 0.15 mag
    D (Virgo Infall only)      :    22.6 +/-    1.7 Mpc      (m-M) = 31.77 +/- 0.15 mag
    D (Virgo + GA only)        :    24.7 +/-    1.7 Mpc      (m-M) = 31.96 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :    24.8 +/-    1.7 Mpc      (m-M) = 31.97 +/- 0.15 mag
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :      77 pc/arcsec =  0.077 kpc/arcsec =   4.64 kpc/arcmin =   0.28 Mpc/degree
    Scale (Local Group)        :      74 pc/arcsec =  0.074 kpc/arcsec =   4.45 kpc/arcmin =   0.27 Mpc/degree
    Scale (3K CMB)             :     104 pc/arcsec =  0.104 kpc/arcsec =   6.26 kpc/arcmin =   0.38 Mpc/degree
    Scale (Virgo Infall only)  :     110 pc/arcsec =  0.110 kpc/arcsec =   6.58 kpc/arcmin =   0.39 Mpc/degree
    Scale (Virgo + GA only)    :     120 pc/arcsec =  0.120 kpc/arcsec =   7.18 kpc/arcmin =   0.43 Mpc/degree
    Scale(Virgo + GA + Shapley):     120 pc/arcsec =  0.120 kpc/arcsec =   7.20 kpc/arcmin =   0.43 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 = 13.889 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 1232 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.005239 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 21.6 Mpc (m-M) = 31.67 mag Angular-Size Distance : 21.4 Mpc (m-M) = 31.65 mag Co-Moving Radial Distance : 21.5 Mpc (m-M) = 31.66 mag Co-Moving Tangential Dist. : 21.5 Mpc (m-M) = 31.66 mag Co-Moving Volume : 4.16e-05 Gpc^3 Light Travel-Time : 0.070 Gyr Age at Redshift 0.005239 : 13.229 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 104 pc/arcsec = 0.104 kpc/arcsec = 6.22 kpc/arcmin = 0.37 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.97932; Magnitude per Unit Area = 0.02269 mag
    To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
    Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities


    The brightest flux in each of the following spectral regions, when available:
    Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
    Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
    Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

    Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
    Millimeter 0.00E+00 +/- -NaN [W] 0.00E+00 +/- -NaN
    NOTE: The above quantities are derived using an estimated Distance Modulus of (q< a Metric Distance of (<<Average NED-D value.
    The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

    View details and SED for 81 Photometric data point(s) available in NED.


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

    Passband Apparent Major Axis
    (2a) [arcsec]
    Apparent Minor Axis
    (2b) [arcsec]
    Reference Level RefcodePhysical Major Axis
    (2a) [kpc]
    Physical Minor Axis
    (2b) [kpc]
    POSS1 103a-O 180.00180.00... Low surface brightness 1964MCG2..C...0000V24.7724.77
    K_s (2MASS "total") 114.10100.4110 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:15.7013.82
    NOTE: Physical diameters are derived using a scale of 0.1376 kpc/arcsec based on Average NED-D Metric Distance of (28.380 +/- 2.725) Mpc.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 11 Diameter data point(s) available in NED.

    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 3681SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 3681VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Uppsala General Catalog -- UGC 06445 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Original Zwicky Catalog -- CGCG 096-045 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 +03-29-048 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J11262980+1651475 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASX J11263106+1652010 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J1126297+165148 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J1126298+165148 NASA/IPAC Infrared Science Archive (IRSA)
    SDSS Sky Server
    IRAS Faint Source Catalog -- IRAS F11238+1708 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Catalogue of Principal Galaxies -- PGC 035193 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 035193 The Lyon/Meudon Extragalactic Database (LEDA)
    NRAO/VLA Sky Survey (NVSS)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 3681GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 3681NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 11h26m29.8s, +16d51m47s (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)
    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)
    The NRAO Data Archive System

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