NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-15 T05:13:27 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 4921


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 4921                       13h01m26.1s +27d53m09s G        5482  0.018286      13.1g    ...   192     5   91   25    24   11     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 4921

INDEX for NGC 4921
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
   
91 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
192 Reference(s)   
25 Position data point(s)
24 Redshift data point(s)   
11 Diameter data point(s)   
5 Note(s)   
UGC data    
RC3 data    

ESSENTIAL NOTE for NGC 4921 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 4921 (Back to INDEX)
Object Names Type Object Names Type
NGC 4921G TT 45 G
UGC 08134 G UZC J130126.1+275309 G
CGCG 160-095 G PiGSS J130126+275304 RadioS
CGCG 1259.0+2808 G 1259+28W01 RadioS
MCG +05-31-098 G 74W 023 RadioS
2MASX J13012613+2753095 IrS CXO J130126.1+275309 XrayS
2MASS J13012611+2753097 IrS 2XMM J130125.8+275307 XrayS
SDSS J130126.11+275309.6 G 1XMM J130125.8+275312 XrayS
SDSS J130126.12+275309.5 G ABELL 1656:[D80] 097 G
SDSS J130126.13+275309.6 G ABELL 1656:[GMP83] 2059 G
WBL 426-122 G ABELL 1656:[BO85] 003 G
LDCE 0926 NED062 G [DFO95] 295 G
HDCE 0753 NED001 G [M98j] 188 NED01 G
USGC U508 NED26 G ABELL 1656:[TCB2001] 10-049 G
FOCA 0372 G ABELL 1656:[FBH2004] X094 XrayS
MAPS-NGP O_323_0985167 G ABELL 1656:[MHM2009] C1B-250 RadioS
NGP9 F323-0989135 G [MHR2010] J195.3589+27.8860 G
NSA 104181 G ABELL 1656:[EF2011] 3313 G
PGC 044899 G ABELL 1656:[EF2011] 7254 IrS
SSTSL2 J130126.12+275310.5 IrS [TTL2012] 353608 G
     

COORDINATES for NGC 4921 (Back to INDEX)

Position Reference:2009AJ....137.4436M

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 194.7567690  28.1547443 12h59m01.624s +28d09m17.08s  2.50E-01  2.50E-01    0
Equatorial (J2000.0) 195.3589583  27.8859444 13h01m26.150s +27d53m09.40s  2.50E-01  2.50E-01    0
Ecliptic   (B1950.0) 181.2291603  31.4834216                              2.50E-01  2.50E-01    0
Ecliptic   (J2000.0) 181.9316594  31.4827375                              2.50E-01  2.50E-01    0
Galactic              52.3745588  87.6572609                              2.50E-01  2.50E-01    0
SuperGalactic         89.7933349   8.6537624                              2.50E-01  2.50E-01    0
Additional detailed measurements with references are also available by clicking below:
25 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 4921 (Back to INDEX)

2 Distances found in NED View 2 Individual Distance Measurement(s) for NGC 4921

Summary Statistics computed by NED from 2 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 4921 Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 34.73 88.300
Std. Dev. 0.00 0.000
Min. 34.73 88.300
Max. 34.73 88.300
Median 34.73 88.300

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4921 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyRGin a radial-velocity based grouping...1998Afz....41..308M
KinematicsHI line widthHI line width...1997AJ....113.1197H
Luminosity Class2.0LC I-II...1991RC3.9.C...0000d
Galaxy MorphologySB(rs)abSB(rs)ab...1991RC3.9.C...0000d
18 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 4921 (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]0.0420.0350.0270.0210.0150.0410.0320.0220.0160.0120.0070.0040.0030.001
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]0.0550.0430.0330.0270.0200.0520.0380.0280.0210.0150.0090.0060.0040.002


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.050 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4921 (Back to INDEX)
Helio. Radial Velocity     :      5482 +/-        4 km/s      
Redshift                   :  0.018286 +/- 0.000013        1997AJ....113.1197H
Major Diameter (arcmin)    :   2.5
Minor Diameter (arcmin)    :   2.2
Magnitude and Filter       : 13.1g
Classifications            : SB(rs)ab;RET   AGN  

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:
24 Redshift data point(s)      91 photometric data point(s)      11 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 4921 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    5482 +/-      4 km/s      1997AJ....113.1197H
V (Kinematic LSR)          :    5491 +/-      4 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    5497 +/-      4 km/s      1991RC3.9.C...0000d
V (Local Group)            :    5470 +/-      4 km/s      1996AJ....111..794K
V (3K CMB)                 :    5750 +/-     19 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    5703 +/-     17 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    6034 +/-     29 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    6070 +/-     29 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    75.3 +/-    5.3 Mpc      (m-M) = 34.38 +/- 0.15 mag
D (Local Group)            :    74.9 +/-    5.2 Mpc      (m-M) = 34.37 +/- 0.15 mag
D (3K CMB)                 :    78.8 +/-    5.5 Mpc      (m-M) = 34.48 +/- 0.15 mag
D (Virgo Infall only)      :    78.1 +/-    5.5 Mpc      (m-M) = 34.46 +/- 0.15 mag
D (Virgo + GA only)        :    82.7 +/-    5.8 Mpc      (m-M) = 34.59 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    83.2 +/-    5.8 Mpc      (m-M) = 34.60 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     365 pc/arcsec =  0.365 kpc/arcsec =  21.90 kpc/arcmin =   1.31 Mpc/degree
Scale (Local Group)        :     363 pc/arcsec =  0.363 kpc/arcsec =  21.80 kpc/arcmin =   1.31 Mpc/degree
Scale (3K CMB)             :     382 pc/arcsec =  0.382 kpc/arcsec =  22.91 kpc/arcmin =   1.37 Mpc/degree
Scale (Virgo Infall only)  :     379 pc/arcsec =  0.379 kpc/arcsec =  22.72 kpc/arcmin =   1.36 Mpc/degree
Scale (Virgo + GA only)    :     401 pc/arcsec =  0.401 kpc/arcsec =  24.04 kpc/arcmin =   1.44 Mpc/degree
Scale(Virgo + GA + Shapley):     403 pc/arcsec =  0.403 kpc/arcsec =  24.19 kpc/arcmin =   1.45 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 = 4.134 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 5482 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.019180 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 80 Mpc (m-M) = 34.51 mag Angular-Size Distance : 77 Mpc (m-M) = 34.43 mag Co-Moving Radial Distance : 78.5 Mpc (m-M) = 34.47 mag Co-Moving Tangential Dist. : 78.5 Mpc (m-M) = 34.47 mag Co-Moving Volume : 0.00202 Gpc^3 Light Travel-Time : 0.253 Gyr Age at Redshift 0.019180 : 13.045 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 373 pc/arcsec = 0.373 kpc/arcsec = 22.39 kpc/arcmin = 1.34 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.92682; Magnitude per Unit Area = 0.08251 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 4921 (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)]
X-Ray0.5-2 keV (XMM) 22.9E-15 +/- 2.5E-15 ergs/s/cm^2^ 2004A&A...419...47F 2.14E+33 +/- 2.33E+32 [W] 5.55E+06 +/- 6.07E+05
VisualI 11.17 +/- 0.05 mag 2007ApJS..172..599S-23.56 +/- 0.05 [mag] 7.98E+10 +/- 3.68E+09
Near-InfraredH_T(25)_ 9.45 +/- 0.15 mag 1996ApL&C..35....1G-25.28 +/- 0.15 [mag] 8.12E+10 +/- 1.21E+10
Mid-Infrared6.75 microns (ISO) 21.73 +/- 6.51 milliJy 2001A&A...365...11C 8.99E+35 +/- 2.70E+35 [W] 2.34E+09 +/- 7.01E+08
Far-Infrared175 microns (ISO) 1.16 +/- 0.12 Jy 2001A&A...365...11C 1.85E+36 +/- 1.91E+35 [W] 4.81E+09 +/- 4.98E+08
Radio1.4 GHz (VLA) 479 +/- 88 microJy 2009AJ....137.4436M 6.26E+29 +/- 1.15E+29 [W] 1.63E+03 +/- 2.99E+02
NOTE: The above quantities are derived using an estimated Distance Modulus of (34.73 +/- 0.00) mag corresponding to
a Metric Distance of (88.300 +/- 0.000) Mpc using the 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 91 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4921 (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 150.00120.00164 About 25.0 B-mag arcsec^-2^ 1973UGC...C...0000N64.2151.37
K_s (LGA/2MASS "total") 210.40168.32135 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J90.0772.06
NOTE: Physical diameters are derived using a scale of 0.4281 kpc/arcsec based on Average NED-D Metric Distance of (88.300 +/- 0.000) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

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

EXTERNAL ARCHIVES AND SERVICES for NGC 4921 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 4921SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4921VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Uppsala General Catalog -- UGC 08134 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original Zwicky Catalog -- CGCG 160-095 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 +05-31-098 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J13012613+2753095 NASA/IPAC Infrared Science Archive (IRSA)
version
SDSS Sky Server
Catalogue of Principal Galaxies -- PGC 044899 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 044899 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4921GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4921NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 13h01m26.1s, +27d53m09s (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)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

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