Date and Time of the Query: 2022-01-19 T00:41:58 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 1656+348

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    [HB89] 1656+348                16h58m01.4s +34d43m28s QSO    >30000  1.939850 SPEC 18.0g    ...   135     0   72   38    29    8     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - [HB89] 1656+348

INDEX for [HB89] 1656+348
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):

72 Photometric data point(s) and SED   
Redshift-Independent Distances
135 Reference(s)   
38 Position data point(s)
29 Redshift data point(s)   
8 Diameter data point(s)   
HB89 data    

ESSENTIAL NOTE for [HB89] 1656+348 (Back to INDEX)

CROSS-IDENTIFICATIONS for [HB89] 1656+348 (Back to INDEX)
Object Names Type Object Names Type
[HB89] 1656+348QSO TXS 1656+347 RadioS
FBQS J165801.4+344328 QSO GB2 1656+348 RadioS
B2 1656+34 RadioSGB6 J1658+3443 RadioS
WISE J165801.41+344328.4 IrS ICRF J165801.4+344328 RadioS
WISEA J165801.41+344328.4 IrS IERS B1656+348 RadioS
SDSS J165801.42+344328.4 QSO JVAS J1658+3443 RadioS
SDSS J165801.42+344328.5 QSO OCARS 1656+348 RadioS
SDSS J165801.43+344328.4 QSO VIPS 1044 RadioS
SDSS J165801.43+344328.5 QSO VIPS J16580+3443 RadioS
GALEXASC J165801.40+344329.1 UvS WB J1658+3443 RadioS
GALEXMSC J165801.43+344328.6 UvS WIBRaLS J1658+3443 G
LQAC 254+034 013 QSO 1WGA J1658.0+3443 XrayS
CGRaBS J1658+3443 QSO [VCV2001] J165801.5+344329 QSO
BZQ J1658+3443 QSO [LGF2005] 165612+344801 RadioS
MG2 J165800+3444 RadioS[SHV2006] 0353 G
MG3 J165802+3443 RadioS[HRT2007] J165801+344330 RadioS
87GB 165611.8+344805 RadioS[JBB2007] J165801.42+344328.4 RadioS
87GB[BWE91] 1656+3448 RadioS[MGL2009] 2192 QSO
[WB92] 1656+3448 RadioS[WHJ2012] J254.505951+34.72457QSO
FIRST J165801.3+344328 RadioS[CKK2013] J165801.42+344328.4 QSO
FIRST J165801.4+344328 RadioS[WGS2013] J165801.42+344327.8 G
NVSS J165801+344327 RadioS[FOC2014] 578 RadioS
VLSS J1658.0+3443 RadioS[MGD2014] 1656.2+3448 RadioS
6C B165613.5+344803 RadioS[XH2014] J254.5058+34.7244 QSO
S4 1656+34 RadioS[FRG2017] J254.506+34.724 QSO
OS +392 RadioS    
CRATES J1658+3443 RadioS    
CRATES J165801.42+344328.4 RadioS    

COORDINATES for [HB89] 1656+348 (Back to INDEX)

Position Reference:2011AJ....142...89P

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 254.0511226  34.7999613 16h56m12.2694s +34d47m59.861s  9.80E-04  6.50E-04   90
Equatorial (J2000.0) 254.5059133  34.7245558 16h58m01.4192s +34d43m28.401s  9.80E-04  6.50E-04   90
Ecliptic   (B1950.0) 245.5943007  56.9019017                              9.80E-04  6.50E-04   79
Ecliptic   (J2000.0) 246.2963005  56.8957943                              9.80E-04  6.50E-04   79
Galactic              57.3895332  37.3824692                              9.80E-04  6.50E-04  170
SuperGalactic         75.0376368  57.6248293                              9.80E-04  6.50E-04  151
Additional detailed measurements with references are also available by clicking below:
38 Position data point(s)


TypeAs PublishedNED HomogenizedFlagReference Code
Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
3 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]0.0780.0650.0490.0390.0270.0760.0590.0410.0300.0230.0130.0080.0050.003
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]0.0970.0770.0590.0480.0350.0920.0680.0490.0370.0260.0160.0100.0070.003

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 [HB89] 1656+348 (Back to INDEX)
Helio. Radial Velocity     :    581552 +/-       28 km/s SPEC 
Redshift                   :  1.939850 +/- 0.000093  SPEC ; 2016SDSSD.C...0000:
Description                : AGN            FSRQ 
Magnitude and Filter       : 18.0g
Spare 3                    :  0.10
Spare 4                    :  0.09

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:
29 Redshift data point(s)      72 photometric data point(s)      8 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for [HB89] 1656+348 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :  581552 +/-     28 km/s SPEC 2016SDSSD.C...0000:
V (Kinematic LSR)          :  581572 +/-     28 km/s SPEC 1986MNRAS.221.1023K
V (Galactocentric GSR)     :  581716 +/-     29 km/s SPEC 1991RC3.9.C...0000d
V (Local Group)            :  581743 +/-     30 km/s SPEC 1996AJ....111..794K
V (3K CMB)                 :  581545 +/-     28 km/s SPEC 1996ApJ...473..576F
V (Virgo Infall only)      :  581831 +/-     31 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA only)        :  581814 +/-     31 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  581828 +/-     31 km/s SPEC 2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  7968.7 +/-  557.8 Mpc      (m-M) = 44.51 +/- 0.15 mag
D (Local Group)            :  7969.1 +/-  557.8 Mpc      (m-M) = 44.51 +/- 0.15 mag
D (3K CMB)                 :  7966.4 +/-  557.6 Mpc      (m-M) = 44.51 +/- 0.15 mag
D (Virgo Infall only)      :  7970.3 +/-  557.9 Mpc      (m-M) = 44.51 +/- 0.15 mag
D (Virgo + GA only)        :  7970.1 +/-  557.9 Mpc      (m-M) = 44.51 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  7970.2 +/-  557.9 Mpc      (m-M) = 44.51 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :   38633 pc/arcsec = 38.633 kpc/arcsec = 2318.00 kpc/arcmin = 139.08 Mpc/degree
Scale (Local Group)        :   38635 pc/arcsec = 38.635 kpc/arcsec = 2318.11 kpc/arcmin = 139.09 Mpc/degree
Scale (3K CMB)             :   38622 pc/arcsec = 38.622 kpc/arcsec = 2317.32 kpc/arcmin = 139.04 Mpc/degree
Scale (Virgo Infall only)  :   38641 pc/arcsec = 38.641 kpc/arcsec = 2318.46 kpc/arcmin = 139.11 Mpc/degree
Scale (Virgo + GA only)    :   38640 pc/arcsec = 38.640 kpc/arcsec = 2318.39 kpc/arcmin = 139.10 Mpc/degree
Scale(Virgo + GA + Shapley):   38641 pc/arcsec = 38.641 kpc/arcsec = 2318.45 kpc/arcmin = 139.11 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 = 0.043 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 581552 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 1.939826 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 14738 Mpc (m-M) = 45.84 mag Angular-Size Distance : 1705 Mpc (m-M) = 41.16 mag Co-Moving Radial Distance : 5013 Mpc (m-M) = 43.50 mag Co-Moving Tangential Dist. : 5013 Mpc (m-M) = 43.50 mag Co-Moving Volume : 528 Gpc^3 Light Travel-Time : 9.945 Gyr Age at Redshift 1.939826 : 3.354 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 8267 pc/arcsec = 8.267 kpc/arcsec = 496.03 kpc/arcmin = 29.76 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.01339; Magnitude per Unit Area = 4.683 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)]
X-Ray0.1-2.4 keV (ROSAT) 0.037E-12 erg/cm^2^/s 2009A&A...495..691M 9.65E+37 [W] 2.51E+11
Ultraviolet1700 A (SDSS) -15.235 log(erg/cm^2^/s/A) 2011MNRAS.410..860A 2.57E+39 [W] 6.69E+12
Visuali (SDSS Petrosian)AB 17.719 +/- 0.007 asinh mag 2004SDSS2.C...0000:-28.12 +/- 0.50 [mag] 1.51E+13 +/- 3.03E+12
Near-InfraredW1 (WISE) 13.745 +/- 0.019 mag 2013wise.rept....1C-32.10 +/- 0.50 [mag] 5.94E+12 +/- 1.19E+12
Mid-InfraredW4 (WISE) 8.063 +/- 0.342 mag 2013wise.rept....1C-37.78 +/- 0.61 [mag] 4.58E+12 +/- 1.71E+12
Millimeter34 GHz (VSA) 297 +/- 11 milliJy 2005MNRAS.359...16L 2.62E+38 +/- 5.34E+37 [W] 6.83E+11 +/- 1.39E+11
Radio4830 MHz (NRAO) 917 milliJy 1990ApJS...72..621L 1.15E+38 [W] 2.99E+11
NOTE: The above quantities are derived using a Distance Modulus of 45.84 mag corresponding to
a Luminosity Distance of 14737.5 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 72 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) 6.525.22106 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:53.9043.12
NOTE: At z > 0.5, physical diameters are derived using a Scale (Cosmology Corrected) of 8.267 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.

Resources for Object NamesSite/Service
The Second Bologna Survey -- B2 1656+34 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
SDSS Sky Server
Original FIRST Source Catalog -- FIRST J165801.3+344328 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J165801.3+344328 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original FIRST Source Catalog -- FIRST J165801.4+344328 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J165801.4+344328 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 1656+347 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
GB6 catalog of radio sources -- GB6 J1658+3443 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- [HB89] 1656+348GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- [HB89] 1656+348NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 16h58m01.4s, +34d43m28s (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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