Date and Time of the Query: 2021-12-08 T22:43:40 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 3C 345

1 objects found in NED.    


 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    3C 345                         16h42m58.8s +39d48m37s QSO    >30000  0.593415 SPEC 16.6g    ...  1328    30  350   73    55   10     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - 3C 345

INDEX for 3C 345
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

350 Photometric data point(s) and SED   
Redshift-Independent Distances
1328 Reference(s)   
73 Position data point(s)
55 Redshift data point(s)   
10 Diameter data point(s)   
30 Note(s)   
HB89 data    

ESSENTIAL NOTE for 3C 345 (Back to INDEX)

Object Names Type Object Names Type
3C 345RadioSMASIV J1642+3948 RadioS
[HB89] 1641+399 NED01 QSO OCARS 1641+399 RadioS
FBQS J164258.7+394837 QSO RGB J1642+398 RadioS
4C +39.48 RadioSVIPS 1010 RadioS
B2 1641+39 RadioSVIPS J16429+3948 RadioS
B3 1641+399 RadioSWB J1642+3948 RadioS
WISE J164258.81+394836.9 IrS WIBRaLS J1642+3948 G
WISEA J164258.81+394836.9 IrS WMAP 035 RadioS
2MASS J16425879+3948369 IrS WMAP J1642+3948 RadioS
2MASSi J1642587+394837 IrS WMAP J164252+3948 RadioS
SDSS J164258.80+394836.9 QSO WMAP J164255+3948 RadioS
SDSS J164258.80+394837.0 QSO NEWPS_5yr_5s 373 RadioS
SDSS J164258.81+394836.9 G NEWPS_5yr_5s_15 359 RadioS
SDSS J164258.81+394837.0 QSO QVW5 J164259+3948 RadioS
SDSS J164258.82+394837.0 QSO QVW7 J164257+394854 RadioS
GALEXASC J164258.89+394837.0 UvS WMAP3-NEWPS-5S 220 RadioS
IRAS 16413+3954A IrS 2CXO J164258.8+394837 XrayS
IRAS F16413+3954 IrS CXOGSG J164258.8+394837 XrayS
RBPL J1642+3948 QSO RX J1642.9+3948 XrayS
LQAC 250+039 021 QSO 1RXS J164258.9+394822 XrayS
CGRaBS J1642+3948 QSO RXS J164258.9+394822 XrayS
F2M J164258.8+394837 QSO 2PBC J1643.0+3951 XrayS
LRG J164258.77+394837.0 RadioS1WGA J1642.9+3948 XrayS
RBS 1603 QSO 1ES 1641+399 XrayS
LEDA 084767 G SWIFT J1643.1+3951 XrayS
LEDA 097538 G [VE75] CL 1641+39 RadioS
THING 000000000432234604 QSO [KWP81] 1641+39 RadioS
BZQ J1642+3948 QSO [dML87] 420 G
MG4 J164259+3948 RadioS[CCS88] 164117.7+395410 QSO
87GB 164117.2+395405 RadioS[Pd95] RS 09 RadioS
87GB[BWE91] 1641+3954 RadioS[KMB96] c QSO
[WB92] 1641+3954 RadioS[KMB96] J1642+398 XrayS
FIRST J164258.7+394837 RadioS[MHH96] J164258+394833 XrayS
FIRST J164258.8+394837 RadioSRX J1642.9+3948:[BEV98] 001 QSO
NVSS J164258+394837 RadioS[JP2001] 164118+3954 RadioS
VLSS J1642.9+3948 RadioS[JP2001] 164123+3956 RadioS
VSOP J1642+3948 RadioS[VCV2001] J164258.8+394837 QSO
6C B164118.1+395414 RadioSRX J1642.9+3948:[ZEH2003] 01 QSO
FBS 0141 Blue* [SRM2005] J164258.80+394836.9 QSO
FBS 1641+399 Blue* [SHV2006] 1486 G
EGO 1641+399 VisS [HRT2007] J164258+394842 RadioS
S4 1641+39 RadioS[JBB2007] J164258.81+394837.0 RadioS
OS +368 RadioS[CW2008] J164257+394838 RadioS
CRATES J1642+3948 RadioS[LTF2008] J250.745+39.810 QSO
CRATES J164258.81+394837.0 RadioS[DFD2009] J1642+3948 RadioS
DA 420 RadioS[MGL2009] 2163 QSO
NRAO 0513 RadioS[CGB2011] G28 G
TXS 1641+399 RadioS[GUL2012] J164258.80+394837.2 QSO
CoNFIG 259 RadioS[WHJ2012] J250.745026+39.81027QSO
EF B1641+3954 RadioS[BTM2013] 0829 XrayS
GB6 J1642+3948 RadioS[MGD2014] 1641.2+3954 RadioS
ICRF J164258.8+394836 RadioS[XH2014] J250.7450+39.8100 QSO
ICRF-Ext1 J1642+3948 RadioS[LSJ2017] J1642+3948 RadioS
ICRF2 J164258.8+394836 G    
IERS B1641+399 RadioS    
JVAS J1642+3948 RadioS    
LHE 413 RadioS    

COORDINATES for 3C 345 (Back to INDEX)

Position Reference:1995AJ....110..880J

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 250.3233914  39.9030144 16h41m17.6139s +39d54m10.852s  1.30E-04  9.00E-05    0
Equatorial (J2000.0) 250.7450413  39.8102758 16h42m58.8099s +39d48m36.993s  1.30E-04  9.00E-05    0
Ecliptic   (B1950.0) 237.6282520  61.1553498                              1.30E-04  9.00E-05  164
Ecliptic   (J2000.0) 238.3323676  61.1496114                              1.30E-04  9.00E-05  164
Galactic              63.4549579  40.9489326                              1.30E-04  9.00E-05   86
SuperGalactic         69.8894739  52.5101257                              1.30E-04  9.00E-05   60
Additional detailed measurements with references are also available by clicking below:
73 Position data point(s)


TypeAs PublishedNED HomogenizedFlagReference Code
Luminosity ClassULIRGULIRG...2009ApJ...704..789H
Radio MorphologyCCore-Dominated...1983MNRAS.204..151L
Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
7 Detailed Classification(s)

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]0.0570.0470.0360.0280.0200.0550.0430.0300.0220.0160.0090.0060.0040.002
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]0.0710.0570.0440.0350.0250.0680.0500.0360.0270.0190.0120.0080.0050.002

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 3C 345 (Back to INDEX)
Helio. Radial Velocity     :    177901 +/-       13 km/s SPEC 
Redshift                   :  0.593415 +/- 0.000045  SPEC ; 2015MNRAS.452.4153A
Description                : Opt.var.;HPQ   FSRQ 
Magnitude and Filter       : 16.6g
Spare 3                    :  0.14
Spare 4                    :  0.13

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:
55 Redshift data point(s)      350 photometric data point(s)      10 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :  177901 +/-     13 km/s SPEC 2015MNRAS.452.4153A
V (Kinematic LSR)          :  177920 +/-     13 km/s SPEC 1986MNRAS.221.1023K
V (Galactocentric GSR)     :  178066 +/-     15 km/s SPEC 1991RC3.9.C...0000d
V (Local Group)            :  178094 +/-     18 km/s SPEC 1996AJ....111..794K
V (3K CMB)                 :  177908 +/-     13 km/s SPEC 1996ApJ...473..576F
V (Virgo Infall only)      :  178191 +/-     19 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA only)        :  178163 +/-     19 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  178179 +/-     19 km/s SPEC 2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  2439.3 +/-  170.7 Mpc      (m-M) = 41.94 +/- 0.15 mag
D (Local Group)            :  2439.6 +/-  170.8 Mpc      (m-M) = 41.94 +/- 0.15 mag
D (3K CMB)                 :  2437.1 +/-  170.6 Mpc      (m-M) = 41.93 +/- 0.15 mag
D (Virgo Infall only)      :  2441.0 +/-  170.9 Mpc      (m-M) = 41.94 +/- 0.15 mag
D (Virgo + GA only)        :  2440.6 +/-  170.8 Mpc      (m-M) = 41.94 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  2440.8 +/-  170.9 Mpc      (m-M) = 41.94 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :   11826 pc/arcsec = 11.826 kpc/arcsec = 709.55 kpc/arcmin =  42.57 Mpc/degree
Scale (Local Group)        :   11828 pc/arcsec = 11.828 kpc/arcsec = 709.66 kpc/arcmin =  42.58 Mpc/degree
Scale (3K CMB)             :   11815 pc/arcsec = 11.815 kpc/arcsec = 708.92 kpc/arcmin =  42.54 Mpc/degree
Scale (Virgo Infall only)  :   11834 pc/arcsec = 11.834 kpc/arcsec = 710.05 kpc/arcmin =  42.60 Mpc/degree
Scale (Virgo + GA only)    :   11832 pc/arcsec = 11.832 kpc/arcsec = 709.94 kpc/arcmin =  42.60 Mpc/degree
Scale(Virgo + GA + Shapley):   11833 pc/arcsec = 11.833 kpc/arcsec = 710.00 kpc/arcmin =  42.60 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 = 0.141 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 177901 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.593438 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 3381 Mpc (m-M) = 42.65 mag Angular-Size Distance : 1332 Mpc (m-M) = 40.62 mag Co-Moving Radial Distance : 2122 Mpc (m-M) = 41.63 mag Co-Moving Tangential Dist. : 2122 Mpc (m-M) = 41.63 mag Co-Moving Volume : 40 Gpc^3 Light Travel-Time : 5.497 Gyr Age at Redshift 0.593438 : 7.802 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 6457 pc/arcsec = 6.457 kpc/arcsec = 387.40 kpc/arcmin = 23.24 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.15512; Magnitude per Unit Area = 2.023 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities


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).

Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Gamma-Ray14-195 keV (Swift) 3.34E-11 +/- 0.64E-11 erg/s/cm^2^ 2010ApJS..186..378T 4.57E+39 +/- 1.27E+39 [W] 1.19E+13 +/- 3.29E+12
X-Ray15-150 keV (Swift) 2.2e-11 +/- 1.3e-11 erg/cm^2^/s 2010A&A...524A..64C 3.02E+39 +/- 1.88E+39 [W] 7.86E+12 +/- 4.88E+12
UltravioletNUV (GALEX) AB 17.2454 +/- 0.0301054 mag 2012GASC..C...0000S-25.40 +/- 0.50 [mag] 2.11E+12 +/- 4.25E+11
Visuallog nu(Hz) 14.50 0.53 +/- 0.02 log f_nu (milliJy) 1979ApJ...230...79N 1.47E+39 +/- 3.01E+38 [W] 3.81E+12 +/- 7.83E+11
Near-InfraredL (Mt. Lemmon) 25.5 +/- 4.7 milliJy 1982ApJ...259..486S 2.99E+39 +/- 8.13E+38 [W] 7.78E+12 +/- 2.11E+12
Mid-Infrared25 microns (IRAS) 310 +/- 20 milliJy 2002A&A...381..389A 5.09E+39 +/- 1.07E+39 [W] 1.32E+13 +/- 2.78E+12
Far-Infrared100 microns (IRAS) 1323.0 +/- 66.0 milliJy 1988AJ.....95..307I 5.42E+39 +/- 1.12E+39 [W] 1.41E+13 +/- 2.90E+12
Sub-Millimeter850 microns (JCMT) 4078.4 milliJy 2010MNRAS.401.1240J 1.97E+39 [W] 5.12E+12
Millimeter37 GHz (SEST) 17.03 Jy 2008A&A...485...51H 8.61E+38 [W] 2.24E+12
Radio26.3 MHz 34.000 +/- 6.000 Jy 1980MNRAS.190..903L 1.22E+36 +/- 3.26E+35 [W] 3.18E+09 +/- 8.49E+08
NOTE: The above quantities are derived using a Distance Modulus of 42.65 mag corresponding to
a Luminosity Distance of 3381.4 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 350 Photometric data point(s) available in NED.


The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
r (SDSS Isophotal) 9.058.05168 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:58.4352.00
NOTE: At z > 0.5, physical diameters are derived using a Scale (Cosmology Corrected) of 6.457 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.

Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- 3C 345SIMBAD (CDS, Strasbourg, France)
Fourth Cambridge Survey -- 4C +39.48 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
The Second Bologna Survey -- B2 1641+39 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
The Third Bologna Survey -- B3 1641+399 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
SDSS Sky Server
IRAS Faint Source Catalog -- IRAS F16413+3954 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original FIRST Source Catalog -- FIRST J164258.7+394837 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J164258.7+394837 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original FIRST Source Catalog -- FIRST J164258.8+394837 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J164258.8+394837 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 1641+399 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
GB6 catalog of radio sources -- GB6 J1642+3948 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 084767 The Lyon/Meudon Extragalactic Database (LEDA)
Retrieve mean data from LEDA -- PGC 097538 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- 3C 345GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- 3C 345NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 16h42m58.8s, +39d48m37s (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)
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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