NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-25 T04:23:29 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. 473

INDEX for UM 492
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
   
88 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
305 Reference(s)   
28 Position data point(s)
22 Redshift data point(s)   
8 Diameter data point(s)   
11 Note(s)   
PKS data    
HB89 data    

ESSENTIAL NOTE for UM 492 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for UM 492 (Back to INDEX)
Object Names Type Object Names Type
UM 492EmLS ICRF J122011.8+020342 RadioS
[HB89] 1217+023 QSO ICRF-Ext1 J1220+0203 RadioS
PKS 1217+02 RadioSIERS B1217+023 RadioS
WISE J122011.89+020342.3 IrS IVS B1217+023 RadioS
2MASS J12201188+0203420 IrS JVAS J1220+0203 RadioS
SDSS J122011.88+020342.1 QSO RGB J1220+020 RadioS
SDSS J122011.88+020342.2 QSO RX J1220.1+0203 XrayS
SDSS J122011.89+020342.2 G 1RXS J122011.9+020342 XrayS
LQAC 185+002 002 QSO 1ES 1217+023 XrayS
HE 1217+0220 QSO 2E 2661 XrayS
LAMOST J122011.88+020342.2 QSO 2FGL J1219.7+0201 GammaS
PGC 039770 G [VCV2001] J122011.9+020342 QSO
RBS 1098 QSO RX J1220.1+0203:[ZEH2003] 01 QSO
BZQ J1220+0203 QSO [JBB2007] J122011.88+020342.2 RadioS
PKS B1217+023 RadioS[MGL2009] 1444 QSO
PKS J1220+0203 RadioS[RDD2009] 04b QSO
PMN J1220+0203 RadioS[WHJ2012] J185.049530+02.06172QSO
MRC 1217+023 RadioS[CKK2013] J122011.88+020342.2 QSO
MG1 J122014+0203 RadioS[ZZ2014] J122011.88+020342.1 RadioS
87GB[BWE91] 1217+0219 RadioS[ZZ2014] J122011.88+020342.2 RadioS
[WB92] 1217+0219 RadioS    
VLSS J1220.2+0203 RadioS    
ON +029 RadioS    
TXS 1217+023 RadioS    
     

COORDINATES for UM 492 (Back to INDEX)

Position Reference:2002ApJS..141...13B

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 184.4097391   2.3391813 12h17m38.3374s +02d20m21.053s  1.60E-03  1.20E-03    0
Equatorial (J2000.0) 185.0495192   2.0617292 12h20m11.8846s +02d03m42.225s  1.60E-03  1.20E-03    0
Ecliptic   (B1950.0) 183.1165887   3.8998258                              1.60E-03  1.20E-03  157
Ecliptic   (J2000.0) 183.8155651   3.8988853                              1.60E-03  1.20E-03  157
Galactic             284.9919492  63.8400149                              1.60E-03  1.20E-03  164
SuperGalactic        112.0750774  -7.8078978                              1.60E-03  1.20E-03  106
Additional detailed measurements with references are also available by clicking below:
28 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for UM 492 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for UM 492 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Radio Morphologyradio jetradio jet...1992A&AS...95..249L
Activity TypeS1.2Sy 1.2...2006A&A...455..773V
4 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for UM 492 (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]0.1150.0920.0700.0570.0410.1090.0810.0580.0440.0310.0190.0120.0080.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.000 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for UM 492 (Back to INDEX)
Helio. Radial Velocity     :     72062 +/-      105 km/s      
Redshift                   :  0.240373 +/- 0.000351       ; 2010MNRAS.405.2302H
Description                : Opt.var.       FSRQ 
Magnitude and Filter       : 15.9g
Spare 3                    :  0.21
Spare 4                    :  0.18

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:
22 Redshift data point(s)      88 photometric data point(s)      8 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for UM 492 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :   72062 +/-    105 km/s      2010MNRAS.405.2302H
V (Kinematic LSR)          :   72064 +/-    105 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :   71970 +/-    105 km/s      1991RC3.9.C...0000d
V (Local Group)            :   71906 +/-    106 km/s      1996AJ....111..794K
V (3K CMB)                 :   72412 +/-    108 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :   72106 +/-    107 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :   72396 +/-    108 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :   72482 +/-    109 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :   985.9 +/-   69.0 Mpc      (m-M) = 39.97 +/- 0.15 mag
D (Local Group)            :   985.0 +/-   69.0 Mpc      (m-M) = 39.97 +/- 0.15 mag
D (3K CMB)                 :   991.9 +/-   69.5 Mpc      (m-M) = 39.98 +/- 0.15 mag
D (Virgo Infall only)      :   987.7 +/-   69.2 Mpc      (m-M) = 39.97 +/- 0.15 mag
D (Virgo + GA only)        :   991.7 +/-   69.4 Mpc      (m-M) = 39.98 +/- 0.15 mag
D (Virgo + GA + Shapley)   :   992.9 +/-   69.5 Mpc      (m-M) = 39.98 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :    4780 pc/arcsec =  4.780 kpc/arcsec = 286.79 kpc/arcmin =  17.21 Mpc/degree
Scale (Local Group)        :    4775 pc/arcsec =  4.775 kpc/arcsec = 286.53 kpc/arcmin =  17.19 Mpc/degree
Scale (3K CMB)             :    4809 pc/arcsec =  4.809 kpc/arcsec = 288.55 kpc/arcmin =  17.31 Mpc/degree
Scale (Virgo Infall only)  :    4789 pc/arcsec =  4.789 kpc/arcsec = 287.32 kpc/arcmin =  17.24 Mpc/degree
Scale (Virgo + GA only)    :    4808 pc/arcsec =  4.808 kpc/arcsec = 288.48 kpc/arcmin =  17.31 Mpc/degree
Scale(Virgo + GA + Shapley):    4814 pc/arcsec =  4.814 kpc/arcsec = 288.82 kpc/arcmin =  17.33 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 = 0.346 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 72062 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.241541 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 1168 Mpc (m-M) = 40.34 mag Angular-Size Distance : 758 Mpc (m-M) = 39.40 mag Co-Moving Radial Distance : 941 Mpc (m-M) = 39.87 mag Co-Moving Tangential Dist. : 941 Mpc (m-M) = 39.87 mag Co-Moving Volume : 3.49 Gpc^3 Light Travel-Time : 2.755 Gyr Age at Redshift 0.241541 : 10.544 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 3675 pc/arcsec = 3.675 kpc/arcsec = 220.48 kpc/arcmin = 13.23 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.42088; Magnitude per Unit Area = 0.9396 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 UM 492 (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)]
Gamma-Ray0.1-100 GeV (Fermi) 7.1E-12 +/- 1.7E-12 erg/cm^2^/s 2012ApJS..199...31N 1.16E+38 +/- 3.61E+37 [W] 3.02E+11 +/- 9.39E+10
X-Ray0.3-3.5 keV Einstein 0.71 +/- 0.12 erg cm^-2^ s^-1^ 1987ApJ...323..243W 1.16E+38 +/- 2.65E+37 [W] 3.02E+11 +/- 6.90E+10
UltravioletNUV (GALEX) AB 16.11 mag 2008MNRAS.383..581D-24.23 [mag] 7.35E+11
Visuali (SDSS Petrosian)AB 15.582 +/- 0.002 asinh mag 2004SDSS2.C...0000:-24.76 +/- 0.50 [mag] 6.00E+11 +/- 1.20E+11
Near-InfraredN34 11.67 +/- 0.30 mag 1994ApJS...95....1E-28.67 +/- 0.58 [mag] 2.62E+11 +/- 8.92E+10
Mid-InfraredN 8.62 +/- 0.87 mag 1994ApJS...95....1E-31.72 +/- 1.00 [mag] 1.75E+11 +/- 1.44E+11
Radio74 MHz (VLA) 3.58 +/- 0.47 Jy 2007AJ....134.1245C 4.32E+34 +/- 1.03E+34 [W] 1.12E+08 +/- 2.68E+07
NOTE: The above quantities are derived using a Distance Modulus of 40.34 mag corresponding to
a Luminosity Distance of 1168.3 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 88 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for UM 492 (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) 14.1513.0281 25.0 mag arcsec^-2^ 2004SDSS2.C...0000:68.1162.67
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 4.814 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 8 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for UM 492 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- UM 492SIMBAD (CDS, Strasbourg, France)
version
SDSS Sky Server
Catalogue of Principal Galaxies -- PGC 039770 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 039770 The Lyon/Meudon Extragalactic Database (LEDA)
Parkes Radio Sources Catalogue -- PKS B1217+023 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Parkes-MIT-NRAO 4.85GHz Surveys -- PMN J1220+0203 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Texas Survey of radio sources at 365MHz -- TXS 1217+023 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- UM 492GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- UM 492NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h20m11.9s, +02d03m42s (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)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System





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