NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-14 T06:30:29 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 6446


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 6446                       17h46m07.5s +35d34m10s G        6760  0.022549      15.5     ...    26     1   21    7     3    4     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 6446

INDEX for NGC 6446
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
   
21 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
26 Reference(s)   
7 Position data point(s)
3 Redshift data point(s)   
4 Diameter data point(s)   
1 Note(s)   

ESSENTIAL NOTE for NGC 6446 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 6446 (Back to INDEX)
Object Names Type Object Names Type
NGC 6446G 2MASXi J1746075+353409 IrS
ARK 528 G 2MASS J17460751+3534097 IrS
CGCG 199-018 G GALEXASC J174607.57+353409.2 UvS
CGCG 1744.3+3535 G KPG 523A G
MCG +06-39-018 G PGC 060825 G
2MASX J17460751+3534100 IrS UZC J174607.5+353410 G
     

COORDINATES for NGC 6446 (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)  266.089240   35.587284  17h44m21.42s  +35d35m14.2s  1.25E+00  1.25E+00    0
Equatorial (J2000.0)  266.531292   35.569389  17h46m07.51s  +35d34m09.8s  1.25E+00  1.25E+00    0
Ecliptic   (B1950.0)  263.826958   58.949278                              1.25E+00  1.25E+00    0
Ecliptic   (J2000.0)  264.525891   58.942785                              1.25E+00  1.25E+00    0
Galactic               60.838281   27.954222                              1.25E+00  1.25E+00    0
SuperGalactic          61.013324   64.878807                              1.25E+00  1.25E+00    0
Additional detailed measurements with references are also available by clicking below:
7 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 6446 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 6446 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyPPPair member (points to parent)...1972AISAO...7....3K
KinematicsHI line widthHI line width...2005A&A...430..373T
Galaxy Morphologyhigh-surface-brightness galaxyhigh-surface-brightness galaxy...1975SoByu..47....3A
4 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 6446 (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]0.1380.1160.0870.0690.0480.1350.1050.0730.0540.0400.0230.0140.0100.005
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]0.1740.1380.1060.0860.0620.1650.1210.0880.0670.0470.0290.0180.0120.005


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.090 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 6446 (Back to INDEX)
Helio. Radial Velocity     :      6760 +/-       13 km/s      
Redshift                   :  0.022549 +/- 0.000043        2005A&A...430..373T
Major Diameter (arcmin)    :  0.3 
Minor Diameter (arcmin)    :  0.3 
Magnitude and Filter       : 15.5 
Classifications            : Sa                  

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:
3 Redshift data point(s)      21 photometric data point(s)      4 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 6446 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    6760 +/-     13 km/s      2005A&A...430..373T
V (Kinematic LSR)          :    6780 +/-     13 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    6946 +/-     15 km/s      1991RC3.9.C...0000d
V (Local Group)            :    6985 +/-     19 km/s      1996AJ....111..794K
V (3K CMB)                 :    6689 +/-     14 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    7069 +/-     20 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    7174 +/-     21 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    7210 +/-     21 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    95.2 +/-    6.7 Mpc      (m-M) = 34.89 +/- 0.15 mag
D (Local Group)            :    95.7 +/-    6.7 Mpc      (m-M) = 34.90 +/- 0.15 mag
D (3K CMB)                 :    91.6 +/-    6.4 Mpc      (m-M) = 34.81 +/- 0.15 mag
D (Virgo Infall only)      :    96.8 +/-    6.8 Mpc      (m-M) = 34.93 +/- 0.15 mag
D (Virgo + GA only)        :    98.3 +/-    6.9 Mpc      (m-M) = 34.96 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    98.8 +/-    6.9 Mpc      (m-M) = 34.97 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     461 pc/arcsec =  0.461 kpc/arcsec =  27.68 kpc/arcmin =   1.66 Mpc/degree
Scale (Local Group)        :     464 pc/arcsec =  0.464 kpc/arcsec =  27.84 kpc/arcmin =   1.67 Mpc/degree
Scale (3K CMB)             :     444 pc/arcsec =  0.444 kpc/arcsec =  26.66 kpc/arcmin =   1.60 Mpc/degree
Scale (Virgo Infall only)  :     469 pc/arcsec =  0.469 kpc/arcsec =  28.17 kpc/arcmin =   1.69 Mpc/degree
Scale (Virgo + GA only)    :     476 pc/arcsec =  0.476 kpc/arcsec =  28.59 kpc/arcmin =   1.72 Mpc/degree
Scale(Virgo + GA + Shapley):     479 pc/arcsec =  0.479 kpc/arcsec =  28.73 kpc/arcmin =   1.72 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 = 3.481 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 6760 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.022313 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 93.3 Mpc (m-M) = 34.85 mag Angular-Size Distance : 89.2 Mpc (m-M) = 34.75 mag Co-Moving Radial Distance : 91.2 Mpc (m-M) = 34.80 mag Co-Moving Tangential Dist. : 91.2 Mpc (m-M) = 34.80 mag Co-Moving Volume : 0.00318 Gpc^3 Light Travel-Time : 0.294 Gyr Age at Redshift 0.022313 : 13.005 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 433 pc/arcsec = 0.433 kpc/arcsec = 25.96 kpc/arcmin = 1.56 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.91551; Magnitude per Unit Area = 0.09584 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 6446 (Back to INDEX)

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).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
UltravioletNUV (GALEX) AB 20.6911 +/- 0.179731 mag 2012GASC..C...0000S-14.16 +/- 0.53 [mag] 6.70E+07 +/- 1.74E+07
Visualm_p 15.5 +/- 0.4 mag 1966CGCG3.C...0000Z-19.35 +/- 0.64 [mag] 4.96E+09 +/- 2.42E+09
Near-InfraredH 11.751 +/- 0.037 mag 20032MASX.C.......:-23.10 +/- 0.50 [mag] 1.00E+10 +/- 2.04E+09
NOTE: The above quantities are derived using a Distance Modulus of 34.85 mag corresponding to
a Luminosity Distance of 93.3 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 21 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 6446 (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]
POSS1 103a-O 18.0018.00... Low surface brightness 1964MCG2..C...0000V8.628.62
K_s (2MASS "total") 50.0035.0080 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:23.9416.76
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.479 kpc/arcsec.
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 NGC 6446 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 6446SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 6446VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original Zwicky Catalog -- CGCG 199-018 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 +06-39-018 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J17460751+3534100 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1746075+353409 NASA/IPAC Infrared Science Archive (IRSA)
Catalogue of Principal Galaxies -- PGC 060825 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 060825 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 6446GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 6446NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 17h46m07.5s, +35d34m10s (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)
Explore resources with DataScope (15 arcmin 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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