NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-25 T23:16:26 PDT
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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. 86

INDEX for 2MASX J08203944+2104454
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
   
60 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
18 Reference(s)   
5 Position data point(s)
4 Redshift data point(s)   
10 Diameter data point(s)   
1 Association(s)   

ESSENTIAL NOTE for 2MASX J08203944+2104454 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for 2MASX J08203944+2104454 (Back to INDEX)
Object Names Type Object Names Type
2MASX J08203944+2104454IrS NSA 084183 G
2MASXi J0820394+210445 IrS PGC 023406 G
2MASS J08203945+2104455 IrS SSTSL2 J082039.46+210445.8 IrS
SDSS J082039.46+210445.5 G NGC 2563:[ZM98] 0051 G
ASK 484405.0 G [TTL2012] 367027 G
     

COORDINATES for 2MASX J08203944+2104454 (Back to INDEX)

Position Reference:2007SDSS6.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  124.435377   21.238186 08h17m44.490s +21d14m17.47s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  125.164432   21.079319 08h20m39.463s +21d04m45.55s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  121.820198    1.516630                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  122.518753    1.521839                              5.00E-01  5.00E-01    0
Galactic              202.520912   28.631839                              5.00E-01  5.00E-01    0
SuperGalactic          56.813582  -47.634970                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
5 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for 2MASX J08203944+2104454 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for 2MASX J08203944+2104454 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyGRGroup member, radial-velocity confirmed...1993A&AS..100...47G
1 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for 2MASX J08203944+2104454 (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]0.1840.1540.1160.0920.0640.1790.1400.0970.0720.0530.0300.0190.0130.006
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]0.2330.1850.1420.1140.0830.2210.1620.1180.0890.0630.0390.0250.0160.007


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.140 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for 2MASX J08203944+2104454 (Back to INDEX)
Helio. Radial Velocity     :      4496 +/-       46 km/s      
Redshift                   :  0.014997 +/- 0.000154        2006SDSS5.C...0000:
Major Diameter (arcmin)    :  0.28
Minor Diameter (arcmin)    :  0.26
Magnitude and Filter       : 16.5g
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:
4 Redshift data point(s)      60 photometric data point(s)      10 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for 2MASX J08203944+2104454 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    4496 +/-     46 km/s      2006SDSS5.C...0000:
V (Kinematic LSR)          :    4486 +/-     46 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    4414 +/-     46 km/s      1991RC3.9.C...0000d
V (Local Group)            :    4393 +/-     47 km/s      1996AJ....111..794K
V (3K CMB)                 :    4732 +/-     49 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    4539 +/-     48 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    4705 +/-     49 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    4730 +/-     49 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    60.5 +/-    4.3 Mpc      (m-M) = 33.91 +/- 0.15 mag
D (Local Group)            :    60.2 +/-    4.3 Mpc      (m-M) = 33.90 +/- 0.15 mag
D (3K CMB)                 :    64.8 +/-    4.6 Mpc      (m-M) = 34.06 +/- 0.15 mag
D (Virgo Infall only)      :    62.2 +/-    4.4 Mpc      (m-M) = 33.97 +/- 0.15 mag
D (Virgo + GA only)        :    64.4 +/-    4.6 Mpc      (m-M) = 34.05 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    64.8 +/-    4.6 Mpc      (m-M) = 34.06 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     293 pc/arcsec =  0.293 kpc/arcsec =  17.59 kpc/arcmin =   1.06 Mpc/degree
Scale (Local Group)        :     292 pc/arcsec =  0.292 kpc/arcsec =  17.50 kpc/arcmin =   1.05 Mpc/degree
Scale (3K CMB)             :     314 pc/arcsec =  0.314 kpc/arcsec =  18.85 kpc/arcmin =   1.13 Mpc/degree
Scale (Virgo Infall only)  :     301 pc/arcsec =  0.301 kpc/arcsec =  18.09 kpc/arcmin =   1.09 Mpc/degree
Scale (Virgo + GA only)    :     312 pc/arcsec =  0.312 kpc/arcsec =  18.75 kpc/arcmin =   1.12 Mpc/degree
Scale(Virgo + GA + Shapley):     314 pc/arcsec =  0.314 kpc/arcsec =  18.85 kpc/arcmin =   1.13 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 = 5.305 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 4496 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.015783 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 65.6 Mpc (m-M) = 34.09 mag Angular-Size Distance : 63.6 Mpc (m-M) = 34.02 mag Co-Moving Radial Distance : 64.6 Mpc (m-M) = 34.05 mag Co-Moving Tangential Dist. : 64.6 Mpc (m-M) = 34.05 mag Co-Moving Volume : 0.00113 Gpc^3 Light Travel-Time : 0.209 Gyr Age at Redshift 0.015783 : 13.090 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 308 pc/arcsec = 0.308 kpc/arcsec = 18.50 kpc/arcmin = 1.11 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.93928; Magnitude per Unit Area = 0.06801 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 2MASX J08203944+2104454 (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)]
Visualz (SDSS CModel) AB 14.939 asinh mag 2006SDSS5.C...0000:-19.15 [mag] 1.64E+09
Near-InfraredH 12.846 +/- 0.064 mag 20032MASX.C.......:-21.24 +/- 0.50 [mag] 1.82E+09 +/- 3.80E+08
Mid-Infrared5.8 microns (IRAC) 7.4657E+02 +/- 4.3383E+00 microJy 2013SSTSLC4.2....0C 2.01E+34 +/- 4.03E+33 [W] 5.24E+07 +/- 1.05E+07
NOTE: The above quantities are derived using a Distance Modulus of 34.09 mag corresponding to
a Luminosity Distance of 65.6 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 60 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for 2MASX J08203944+2104454 (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]
r (SDSS Isophotal) 18.9317.9860 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:5.955.65
K_s (2MASS "total") 32.0028.8095 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:10.059.05
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.314 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 10 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for 2MASX J08203944+2104454 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- 2MASX J08203944+2104454SIMBAD (CDS, Strasbourg, France)
2MASS Extended Source Images (JHKs) -- 2MASX J08203944+2104454NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J0820394+210445 NASA/IPAC Infrared Science Archive (IRSA)
version
SDSS Sky Server
Catalogue of Principal Galaxies -- PGC 023406 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 023406 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- 2MASX J08203944+2104454GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- 2MASX J08203944+2104454NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 08h20m39.4s, +21d04m46s (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)
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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