NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-14 T11:09:56 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. 1

INDEX for NGC 1921
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Redshift-Independent Distances
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images

Spectra   
Redshift-Independent Distances
6 Reference(s)   

ESSENTIAL NOTE for NGC 1921 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 1921 (Back to INDEX)
Object Names Type Object Names Type
NGC 1921*Cl ESO 056-SC 102 *Cl

COORDINATES for NGC 1921 (Back to INDEX)

Position Reference:1982ESOU..C...0000L

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)    79.95000   -69.83667  05h19m48.00s  -69d50m12.0s  7.50E+00  7.50E+00    0
Equatorial (J2000.0)    79.84480   -69.78776  05h19m22.75s  -69d47m15.9s  7.50E+00  7.50E+00    0
Ecliptic   (B1950.0)   314.08231   -85.03978                              7.50E+00  7.50E+00    0
Ecliptic   (J2000.0)   314.83948   -85.04395                              7.50E+00  7.50E+00    0
Galactic               280.58589   -33.23813                              7.50E+00  7.50E+00    0
SuperGalactic          216.16573   -33.92666                              7.50E+00  7.50E+00    0

REDSHIFT-INDEPENDENT DISTANCES for NGC 1921 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 1921 (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for NGC 1921 (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.
WARNING: This position is 21.848 arc minutes from the center of the LMC. The value of E(B-V) is not derived from the IRAS/COBE extinction maps.
See 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]0.3250.2720.2060.1630.1130.3180.2480.1710.1270.0950.0530.0340.0230.011
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values: WARNING: This position is 21.848 arc minutes from the center of the LMC. The value of E(B-V) is not derived from the IRAS/COBE extinction maps.
See SFD98.
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]0.4080.3240.2490.2000.1460.3870.2840.2060.1560.1110.0680.0430.0280.011


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.400 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 1921 (Back to INDEX)

Description                : LMC globular:       
Magnitude and Filter       :      
Spare 3                    :      
Spare 4                    :      

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.

EXTERNAL ARCHIVES AND SERVICES for NGC 1921 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 1921SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 1921VizieR Catalog Query (U.S. mirror, CfA/Harvard)
ESO/Uppsala Survey -- ESO 056-SC 102 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 1921GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 1921NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 05h19m22.7s, -69d47m16s (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)
The NRAO Data Archive System





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