NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-02-16 T09:45:14 PST
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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. 2

INDEX for NGC 4128A
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   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
   
19 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
4 Reference(s)   
3 Position data point(s)
3 Diameter data point(s)   

ESSENTIAL NOTE for NGC 4128A (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 4128A (Back to INDEX)
Object Names Type Object Names Type
NGC 4128AG HOLM 337B G
MCG +12-12-002 G NPM1G +69.0097 G
2MASX J12081432+6847075 IrS PGC 038558 G
2MASXi J1208143+684707 IrS LEDA 213927 G
2MASS J12081423+6847075 IrS    
GALEXASC J120814.67+684708.4 UvS    

COORDINATES for NGC 4128A (Back to INDEX)

Position Reference:1987AJ.....94..501K

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  181.441058   69.063572 12h05m45.854s +69d03m48.86s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  182.059617   68.785383 12h08m14.308s +68d47m07.38s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  134.511106   59.366130                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  135.217899   59.370388                              5.00E-01  5.00E-01    0
Galactic              128.731390   47.853579                              5.00E-01  5.00E-01    0
SuperGalactic          47.572469   10.474313                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
3 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 4128A (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4128A (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for NGC 4128A (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]0.0910.0760.0580.0460.0320.0890.0690.0480.0360.0270.0150.0090.0060.003
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]0.1140.0910.0700.0560.0410.1080.0800.0580.0440.0310.0190.0120.0080.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4128A (Back to INDEX)
Major Diameter (arcmin)    :  0.15
Minor Diameter (arcmin)    :  0.12
Magnitude and Filter       : 15.4 
Classifications            :                     

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:
19 photometric data point(s)      3 Diameter data point(s)      

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 4128A (Back to INDEX)
 N/A 

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4128A (Back to INDEX)
 N/A 

EXTERNAL ARCHIVES AND SERVICES for NGC 4128A Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 4128ASIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4128AVizieR Catalog Query (U.S. mirror, CfA/Harvard)
Morphological Catalog of Galaxies -- MCG +12-12-002 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J12081432+6847075 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1208143+684707 NASA/IPAC Infrared Science Archive (IRSA)
Catalogue of Principal Galaxies -- PGC 038558 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 038558 The Lyon/Meudon Extragalactic Database (LEDA)
Retrieve mean data from LEDA -- PGC 213927 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4128AGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4128ANASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h08m14.3s, +68d47m07s (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)
version
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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