NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-18 T12:16:01 PDT
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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 4820


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 4820                       12h57m00.5s -13d43m10s G        4621  0.015414      15.70    ...    20     0   22    6     3    6     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 4820

INDEX for NGC 4820
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
   
22 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
20 Reference(s)   
6 Position data point(s)
3 Redshift data point(s)   
6 Diameter data point(s)   
RC3 data    

ESSENTIAL NOTE for NGC 4820 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 4820 (Back to INDEX)
Object Names Type Object Names Type
NGC 4820G 6dF J1257006-134310 G
MCG -02-33-067 G 6dFGSv 06535 G
2MFGC 10242 G LDCE 0921 NED056 G
2MASX J12570056-1343094 IrS HDCE 0741 NED016 G
2MASS J12570040-1343092 IrS USGC S192 NED07 G
2MASS J12570055-1343096 IrS GSC 5542 01145 G
GALEXASC J125700.72-134309.7 UvS PGC 044227 G
     

COORDINATES for NGC 4820 (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)  193.595455  -13.449097  12h54m22.91s  -13d26m56.7s  1.25E+00  1.25E+00    0
Equatorial (J2000.0)  194.252333  -13.719333  12h57m00.56s  -13d43m09.6s  1.25E+00  1.25E+00    0
Ecliptic   (B1950.0)  197.732526   -7.031536                              1.25E+00  1.25E+00    0
Ecliptic   (J2000.0)  198.430354   -7.034079                              1.25E+00  1.25E+00    0
Galactic              305.000024   49.130054                              1.25E+00  1.25E+00    0
SuperGalactic         129.803819   -3.214886                              1.25E+00  1.25E+00    0
Additional detailed measurements with references are also available by clicking below:
6 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 4820 (Back to INDEX)

1 Distances found in NED View 1 Individual Distance Measurement(s) for NGC 4820

Summary Statistics computed by NED from 1 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 4820 Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 34.00 63.100
Std. Dev. N/A N/A
Min. 34.00 63.100
Max. 34.00 63.100
Median 34.00 63.100

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4820 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyGMGroup member...1976RC2...C...0000d
Galaxy MorphologyS0 edge-onS0 edge-on...1991RC3.9.C...0000d
7 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 4820 (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]0.2180.1830.1380.1090.0760.2140.1660.1150.0860.0640.0360.0230.0150.008
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]0.2750.2180.1680.1350.0980.2610.1920.1390.1050.0750.0460.0290.0190.008


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.040 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4820 (Back to INDEX)
Helio. Radial Velocity     :      4621 +/-       33 km/s      
Redshift                   :  0.015414 +/- 0.000110        1998AJ....116....1D
Major Diameter (arcmin)    :   1.0
Minor Diameter (arcmin)    :   0.2
Magnitude and Filter       : 15.70
Classifications            : S0                  

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)      22 photometric data point(s)      6 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 4820 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    4621 +/-     33 km/s      1998AJ....116....1D
V (Kinematic LSR)          :    4623 +/-     33 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    4505 +/-     33 km/s      1991RC3.9.C...0000d
V (Local Group)            :    4429 +/-     35 km/s      1996AJ....111..794K
V (3K CMB)                 :    4953 +/-     40 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    4661 +/-     38 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    5272 +/-     58 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    5239 +/-     58 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    61.7 +/-    4.3 Mpc      (m-M) = 33.95 +/- 0.15 mag
D (Local Group)            :    60.7 +/-    4.3 Mpc      (m-M) = 33.92 +/- 0.15 mag
D (3K CMB)                 :    67.8 +/-    4.8 Mpc      (m-M) = 34.16 +/- 0.15 mag
D (Virgo Infall only)      :    63.8 +/-    4.5 Mpc      (m-M) = 34.03 +/- 0.15 mag
D (Virgo + GA only)        :    72.2 +/-    5.1 Mpc      (m-M) = 34.29 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    71.8 +/-    5.0 Mpc      (m-M) = 34.28 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     299 pc/arcsec =  0.299 kpc/arcsec =  17.95 kpc/arcmin =   1.08 Mpc/degree
Scale (Local Group)        :     294 pc/arcsec =  0.294 kpc/arcsec =  17.65 kpc/arcmin =   1.06 Mpc/degree
Scale (3K CMB)             :     329 pc/arcsec =  0.329 kpc/arcsec =  19.73 kpc/arcmin =   1.18 Mpc/degree
Scale (Virgo Infall only)  :     310 pc/arcsec =  0.310 kpc/arcsec =  18.57 kpc/arcmin =   1.11 Mpc/degree
Scale (Virgo + GA only)    :     350 pc/arcsec =  0.350 kpc/arcsec =  21.01 kpc/arcmin =   1.26 Mpc/degree
Scale(Virgo + GA + Shapley):     348 pc/arcsec =  0.348 kpc/arcsec =  20.88 kpc/arcmin =   1.25 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 = 4.790 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 4621 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.016520 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 68.7 Mpc (m-M) = 34.19 mag Angular-Size Distance : 66.5 Mpc (m-M) = 34.11 mag Co-Moving Radial Distance : 67.6 Mpc (m-M) = 34.15 mag Co-Moving Tangential Dist. : 67.6 Mpc (m-M) = 34.15 mag Co-Moving Volume : 0.00129 Gpc^3 Light Travel-Time : 0.219 Gyr Age at Redshift 0.016520 : 13.080 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 322 pc/arcsec = 0.322 kpc/arcsec = 19.35 kpc/arcmin = 1.16 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.93656; Magnitude per Unit Area = 0.07116 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 4820 (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 19.4395 +/- 0.0888769 mag 2012GASC..C...0000S-14.56 +/- 0.09 [mag] 9.72E+07 +/- 7.96E+06
Near-InfraredH 10.679 +/- 0.029 mag 20032MASX.C.......:-23.32 +/- 0.03 [mag] 1.24E+10 +/- 3.34E+08
NOTE: The above quantities are derived using an estimated Distance Modulus of (34.00 +/- N/A) mag corresponding to
a Metric Distance of (63.100 +/- N/A) 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 22 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4820 (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]
RC3 D_25; R_25 (blue) 61.4013.51... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d18.784.13
K_s (2MASS "total") 92.5025.90105 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:28.307.92
NOTE: Physical diameters are derived using a scale of 0.3059 kpc/arcsec based on Average NED-D Metric Distance of (63.100 +/- N/A) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 6 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 4820 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 4820SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4820VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Morphological Catalog of Galaxies -- MCG -02-33-067 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J12570056-1343094 NASA/IPAC Infrared Science Archive (IRSA)
Query 6dF Galaxy Redshift Survey -- 6dF J1257006-134310 6dF Galaxy Redshift Survey
Query 6dF Galaxy Redshift Survey -- 6dFGSv 06535 6dF Galaxy Redshift Survey
Catalogue of Principal Galaxies -- PGC 044227 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 044227 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4820GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4820NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h57m00.5s, -13d43m10s (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)
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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